Merge pull request #162 from skamboj/update-golang

Update golang to 1.25 and update all dependencies

.dockerignore

@@ -1 +1,3 @@
 .git/
+bin/
+vendor/

.github/workflows/helm-publish.yaml

@@ -0,0 +1,33 @@
+name: Helm Publish
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  helm_publish:
+    # depending on default permission settings for your org (contents being read-only or read-write for workloads), you will have to add permissions
+    # see: https://docs.github.com/en/actions/security-guides/automatic-token-authentication#modifying-the-permissions-for-the-github_token
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+
+      - name: Install Helm
+        uses: azure/setup-helm@v4
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@v1.7.0
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

.github/workflows/helm-test.yaml

@@ -0,0 +1,74 @@
+name: Helm Test
+on:
+  pull_request:
+jobs:
+  helm_test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout Code
+      uses: actions/checkout@v6
+
+    - name: Install Go
+      uses: actions/setup-go@v6
+      with:
+        go-version-file: 'go.mod'
+
+    - name: Install Tools
+      shell: bash
+      id: tool-versions
+      env:
+        TILT_TOOL_CTLPTL_VERSION: "0.8.28"
+        TILT_TOOL_KIND_VERSION: "0.23.0"
+        TILT_TOOL_KUBECTL_VERSION: "1.30.0"
+        TILT_TOOL_HELM_VERSION: "3.14.4"
+        TILT_TOOL_TILT_VERSION: "0.33.13"
+      run: |
+
+        # Create Tools Directory
+        TOOLS_DIR=/opt/helm_tools
+        mkdir -p "${TOOLS_DIR}"
+
+        # Download ctlptl
+        echo "Downloading ctlptl"
+        curl -fsSL https://github.com/tilt-dev/ctlptl/releases/download/v${TILT_TOOL_CTLPTL_VERSION}/ctlptl.${TILT_TOOL_CTLPTL_VERSION}.linux.x86_64.tar.gz | sudo tar -xzv -C "${TOOLS_DIR}" ctlptl
+
+        # Download kind
+        echo "Downloading kind"
+        curl -fsSL https://kind.sigs.k8s.io/dl/v${TILT_TOOL_KIND_VERSION}/kind-linux-amd64 -o "${TOOLS_DIR}/kind"
+
+        # Download kubectl
+        echo "Downloading kubectl"
+        curl -fsSL https://dl.k8s.io/release/v${TILT_TOOL_KUBECTL_VERSION}/bin/linux/amd64/kubectl -o "${TOOLS_DIR}/kubectl"
+
+        # Download helm
+        echo "Downloading helm"
+        curl -fsSL https://get.helm.sh/helm-v${TILT_TOOL_HELM_VERSION}-linux-amd64.tar.gz | tar -xzv -C "${TOOLS_DIR}" --strip-components=1 linux-amd64/helm
+
+        # Download tilt
+        echo "Downloading tilt"
+        curl -fsSL https://github.com/tilt-dev/tilt/releases/download/v${TILT_TOOL_TILT_VERSION}/tilt.${TILT_TOOL_TILT_VERSION}.linux.x86_64.tar.gz | tar -xzv -C "${TOOLS_DIR}" tilt
+
+        # Make the binaries runnable
+        echo "Making binaries executable"
+        sudo chmod -R +x "${TOOLS_DIR}"
+
+        # Add tools to path
+        echo "PATH=${PATH}:${TOOLS_DIR}" >> $GITHUB_ENV
+
+    - name: Start Kind Cluster
+      shell: bash
+      run: |
+        ctlptl apply -f kind.yaml
+
+    - name: Run Tilt Tests
+      shell: bash
+      run: |
+        tilt ci --debug --output-snapshot-on-exit=/tmp/tilt-snapshot.json
+
+    - name: Upload Tilt Snapshot
+      if: success() || failure()
+      uses: actions/upload-artifact@v6
+      with:
+        name: tilt-snapshot
+        path: |
+          /tmp/tilt-snapshot.json

.github/workflows/main.yml

@@ -0,0 +1,82 @@
+name: CI
+on:
+  push:
+    branches: [ main, master ]
+    tags:
+      - v*
+  pull_request:
+    branches: [ main, master ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    permissions:
+      contents: write
+      packages: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - name: Set up Go
+        uses: actions/setup-go@v6
+        with:
+          go-version-file: 'go.mod'
+
+      # local build
+      - name: Compile the binary
+        run: |
+          make bin/goldpinger
+          ./bin/goldpinger -h
+
+      # simple Docker build
+      - name: Build the Docker image
+        run: |
+          make build
+          docker run `make version` --help
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+        with:
+          username: ${{ secrets.DOCKERHUB_USER }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      # multi-arch build
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          bake-target: docker-metadata-action
+          images: |
+            ${{ github.repository_owner }}/goldpinger
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+          labels: |
+            org.opencontainers.image.title=${{ github.repository }}
+            org.opencontainers.image.description=Goldpinger makes calls between its instances to monitor your networking. It runs as a DaemonSet on Kubernetes and produces Prometheus metrics that can be scraped, visualised and alerted on.
+            org.opencontainers.image.vendor=${{ github.repository_owner }}
+
+      - name: Build regular image
+        uses: docker/bake-action@v6
+        with:
+          targets: ci
+          push: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') }}
+          files: |
+            ./docker-bake.hcl
+            cwd://${{ steps.meta.outputs.bake-file }}
+
+      # https://github.com/docker/buildx/issues/2105
+      - name: Create manifest
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+        run: |
+          set -xe
+          for image in $images; do
+            docker buildx imagetools create -t "${image}" "${image}-linux" "${image}-windows-ltsc2019" "${image}-windows-ltsc2022"
+          done
+        env:
+          images: "${{ join( steps.meta.outputs.tags, ' ') }}"

.gitignore

@@ -91,3 +91,4 @@ ENV/
 # Rope project settings
 .ropeproject
 
+.secrets

.travis.yml

@@ -1,38 +0,0 @@
-language: go
-
-services:
-  - docker
-
-go:
-  - "1.14.x"
-  - master
-
-script:
-  - docker --version
-
-  # build locally and run locally
-  - make clean && make vendor && make && ./bin/goldpinger --help
-
-  # build an image and run the image
-  - make clean && make vendor && make build
-  - docker images
-  - docker run `make version` --help
-
-  # build an image using the multistage builder
-  - make clean && make build-multistage
-  - docker images
-  - docker run `make version` --help
-
-  # build an image with the vendor folder
-  - make clean && make vendor && make vendor-build
-  - docker images
-  - docker run `make version`-vendor --help
-
-deploy:
-  provider: script
-  script: bash docker_deploy.sh
-  skip_cleanup: true
-  on:
-    tags: true
-    go: "1.14.x"
-    condition: -n "$DOCKER_PASSWORD"

Dockerfile

@@ -1,23 +1,33 @@
-FROM golang:1.14-alpine as builder
+ARG WINDOWS_BASE_IMAGE=mcr.microsoft.com/windows/nanoserver:ltcs2022
 
-# Install our build tools
-
-RUN apk add --update git make bash
+FROM --platform=$BUILDPLATFORM golang:1.25 as builder
+ARG TARGETARCH
+ARG TARGETOS
 
 # Get dependencies
-
 WORKDIR /w
-COPY go.mod go.sum /w/
+COPY go.mod go.sum ./
 RUN go mod download
 
 # Build goldpinger
-
 COPY . ./
-RUN make bin/goldpinger
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH make bin/goldpinger
+# Create vendor folder
+RUN go mod vendor
 
 # Build the asset container, copy over goldpinger
-
-FROM scratch
+FROM gcr.io/distroless/static:nonroot as simple
 COPY --from=builder /w/bin/goldpinger /goldpinger
 COPY ./static /static
+COPY ./config /config
 ENTRYPOINT ["/goldpinger", "--static-file-path", "/static"]
+
+FROM $WINDOWS_BASE_IMAGE AS windows
+COPY --from=builder /w/bin/goldpinger /goldpinger.exe
+COPY ./static /static
+COPY ./config /config
+ENTRYPOINT ["/goldpinger.exe", "--static-file-path=/static"]
+
+# For vendor builds, use the simple build and add the vendor'd files
+FROM simple as vendor
+COPY --from=builder /w/vendor /goldpinger-vendor-sources

Makefile

@@ -1,15 +1,16 @@
 name ?= goldpinger
-version ?= v2.1.0
+version ?= v3.10.3
 bin ?= goldpinger
 pkg ?= "github.com/bloomberg/goldpinger"
 tag = $(name):$(version)
 goos ?= ${GOOS}
+goarch ?= ${GOARCH}
 namespace ?= "bloomberg/"
 files = $(shell find . -iname "*.go")
 
 
 bin/$(bin): $(files)
-	GOOS=${goos} PKG=${pkg} ARCH=amd64 VERSION=${version} BIN=${bin} ./build/build.sh
+	GOOS=${goos} PKG=${pkg} ARCH=${goarch} VERSION=${version} BIN=${bin} ./build/build.sh
 
 clean:
 	rm -rf ./vendor
@@ -19,38 +20,26 @@ vendor:
 	rm -rf ./vendor
 	go mod vendor
 
+# Download the latest swagger releases from: https://github.com/go-swagger/go-swagger/releases/
 swagger:
 	swagger generate server -t pkg -f ./swagger.yml --exclude-main -A goldpinger && \
 	swagger generate client -t pkg -f ./swagger.yml -A goldpinger
 
-build-multistage:
-	docker build -t $(tag) -f ./Dockerfile .
-
-build: GOOS=linux
-build: bin/$(bin)
-	docker build -t $(tag) -f ./build/Dockerfile-simple .
-
-tag:
-	docker tag $(tag) $(namespace)$(tag)
-
-push:
-	docker push $(namespace)$(tag)
-
 run:
 	go run ./cmd/goldpinger/main.go
 
+build:
+	docker build -t $(namespace)$(tag) --target simple -f ./Dockerfile .
+
+build-vendor:
+	docker build -t $(namespace)$(tag)-vendor --target vendor -f ./Dockerfile .
+
+build-release:
+	docker buildx build --push --platform linux/amd64,linux/arm64 --target simple -t $(namespace)$(tag) -f ./Dockerfile .
+	docker buildx build --push --platform linux/amd64,linux/arm64 --target vendor -t $(namespace)$(tag)-vendor -f ./Dockerfile .
+
 version:
-	@echo $(tag)
+	@echo $(namespace)$(tag)
 
 
-vendor-build:
-	docker build -t $(tag)-vendor --build-arg TAG=$(tag) -f ./build/Dockerfile-vendor .
-
-vendor-tag:
-	docker tag $(tag)-vendor $(namespace)$(tag)-vendor
-
-vendor-push:
-	docker push $(namespace)$(tag)-vendor
-
-
-.PHONY: clean vendor swagger build build-multistage vendor-build vendor-tag vendor-push tag push run version
+.PHONY: clean vendor swagger build build-release build-vendor run version

README.md

@@ -1,16 +1,20 @@
-# Goldpinger [![Build Status](https://travis-ci.com/bloomberg/goldpinger.svg?branch=master)](https://travis-ci.com/bloomberg/goldpinger)
+# Goldpinger
 
-__Goldpinger__ makes calls between its instances for visibility and alerting.
-It runs as a `DaemonSet` on `Kubernetes` and produces `Prometheus` metrics that can be scraped, visualised and alerted on.
+[![Publish](https://github.com/bloomberg/goldpinger/actions/workflows/publish.yml/badge.svg)](https://github.com/bloomberg/goldpinger/actions/workflows/publish.yml)
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/bloomberg/goldpinger)
+
+__Goldpinger__ makes calls between its instances to monitor your networking.
+It runs as a [`DaemonSet`](#example-yaml) on `Kubernetes` and produces `Prometheus` metrics that can be [scraped](#prometheus), [visualised](#grafana) and [alerted](#alert-manager) on.
 
 Oh, and it gives you the graph below for your cluster. Check out the [video explainer](https://youtu.be/DSFxRz_0TU4).
 
 ![](./extras/screenshot.png)
 
+[:tada: 1M+ pulls from docker hub!](https://hub.docker.com/r/bloomberg/goldpinger/tags)
 
 ## On the menu
 
-- [Goldpinger ![Build Status](https://travis-ci.com/bloomberg/goldpinger)](#goldpinger-build-statushttpstravis-cicombloomberggoldpinger)
+- [Goldpinger](#goldpinger)
   - [On the menu](#on-the-menu)
   - [Rationale](#rationale)
   - [Quick start](#quick-start)
@@ -27,6 +31,8 @@ Oh, and it gives you the graph below for your cluster. Check out the [video expl
     - [Prometheus](#prometheus)
     - [Grafana](#grafana)
     - [Alert Manager](#alert-manager)
+    - [Chaos Engineering](#chaos-engineering)
+  - [Authors](#authors)
   - [Contributions](#contributions)
   - [License](#license)
 
@@ -34,11 +40,10 @@ Oh, and it gives you the graph below for your cluster. Check out the [video expl
 
 We built __Goldpinger__ to troubleshoot, visualise and alert on our networking layer while adopting `Kubernetes` at Bloomberg. It has since become the go-to tool to see connectivity and slowness issues.
 
-It's small, simple and you'll wonder why you hadn't had it before.
+It's small (~16MB), simple and you'll wonder why you hadn't had it before.
 
 If you'd like to know more, you can watch [our presentation at Kubecon 2018 Seattle](https://youtu.be/DSFxRz_0TU4).
 
-
 ## Quick start
 
 Getting from sources:
@@ -52,7 +57,7 @@ Getting from [docker hub](https://hub.docker.com/r/bloomberg/goldpinger):
 
 ```sh
 # get from docker hub
-docker pull bloomberg/goldpinger
+docker pull bloomberg/goldpinger:v3.0.0
 ```
 
 ## Building
@@ -64,21 +69,20 @@ The repo comes with two ways of building a `docker` image: compiling locally, an
 You will need `docker` version 17.05+ installed to support multi-stage builds.
 
 ```sh
-# step 1: launch the build
-make build-multistage
+# Build a local container without publishing
+make build
 
-# step 2: push the image somewhere
-namespace="docker.io/myhandle/" make tag
-namespace="docker.io/myhandle/" make push
+# Build & push the image somewhere
+namespace="docker.io/myhandle/" make build-release
 ```
 
 This was contributed via [@michiel](https://github.com/michiel) - kudos !
 
 ### Compiling locally
 
-In order to build `Goldpinger`, you are going to need `go` version 1.13+ and `docker`.
+In order to build `Goldpinger`, you are going to need `go` version 1.15+ and `docker`.
 
-Building from source code consists of compiling the binary and building a [Docker image](./build/Dockerfile-simple):
+Building from source code consists of compiling the binary and building a [Docker image](./Dockerfile):
 
 ```sh
 # step 0: check out the code
@@ -91,28 +95,43 @@ make bin/goldpinger
 ./bin/goldpinger --help
 
 # step 2: build the docker image containing the binary
-make build
+namespace="docker.io/myhandle/" make build
 
 # step 3: push the image somewhere
-namespace="docker.io/myhandle/" make tag
-namespace="docker.io/myhandle/" make push
+docker push $(namespace="docker.io/myhandle/" make version)
 ```
 
 ## Installation
-
 `Goldpinger` works by asking `Kubernetes` for pods with particular labels (`app=goldpinger`). While you can deploy `Goldpinger` in a variety of ways, it works very nicely as a `DaemonSet` out of the box.
 
-### Authentication with Kubernetes API
+### Helm Installation
+Goldpinger can be installed via [Helm](https://helm.sh/) using the following:
+
+```
+helm repo add goldpinger https://bloomberg.github.io/goldpinger
+helm repo update
+helm install goldpinger goldpinger/goldpinger
+```
+
+### Manual Installation
+`Goldpinger` can be installed manually via configuration similar to the following:
+
+#### Authentication with Kubernetes API
 
 `Goldpinger` supports using a `kubeconfig` (specify with `--kubeconfig-path`) or service accounts.
 
-### Example YAML
-
+#### Example YAML
 
 Here's an example of what you can do (using the in-cluster authentication to `Kubernetes` apiserver).
 
 ```yaml
 ---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: goldpinger-serviceaccount
+  namespace: default
+---
 apiVersion: apps/v1
 kind: DaemonSet
 metadata:
@@ -134,7 +153,7 @@ spec:
       labels:
         app: goldpinger
     spec:
-      serviceAccount: "goldpinger-serviceaccount"
+      serviceAccount: goldpinger-serviceaccount
       tolerations:
         - key: node-role.kubernetes.io/master
           effect: NoSchedule
@@ -159,7 +178,7 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: status.podIP
-          image: "docker.io/bloomberg/goldpinger:2.0.2"
+          image: "docker.io/bloomberg/goldpinger:v3.0.0"
           imagePullPolicy: Always
           securityContext:
             allowPrivilegeEscalation: false
@@ -207,7 +226,7 @@ Note, that you will also need to add an RBAC rule to allow `Goldpinger` to list
 
 ```yaml
 ---
-apiVersion: rbac.authorization.k8s.io/v1beta1
+apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
   name: default
@@ -217,12 +236,18 @@ roleRef:
   name: view
 subjects:
   - kind: ServiceAccount
-    name: default
+    name: goldpinger-serviceaccount
     namespace: default
 ```
 
 You can also see [an example of using `kubeconfig` in the `./extras`](./extras/example-with-kubeconfig.yaml).
 
+### Using with IPv4/IPv6 dual-stack
+
+If your cluster IPv4/IPv6 dual-stack and you want to force IPv6, you can set the `IP_VERSIONS` environment variable to "6" (default is "4") which will use the IPv6 address on the pod and host.
+
+![ipv6](./extras/screenshot-ipv6.png)
+
 ### Note on DNS
 
 Note, that on top of resolving the other pods, all instances can also try to resolve arbitrary DNS. This allows you to test your DNS setup.
@@ -244,6 +269,27 @@ and `goldpinger` should show something like this:
 
 ![screenshot-DNS-resolution](./extras/dns-screenshot.png)
 
+### TCP and HTTP checks to external targets
+
+Instances can also be configured to do simple TCP or HTTP checks on external targets. This is useful for visualizing more nuanced connectivity flows.
+
+```sh
+      --tcp-targets=             A list of external targets(<host>:<port> or <ip>:<port>) to attempt a TCP check on (space delimited) [$TCP_TARGETS]
+      --http-targets=            A  list of external targets(<http or https>://<url>) to attempt an HTTP{S} check on. A 200 HTTP code is considered successful. (space delimited) [$HTTP_TARGETS]
+      --tcp-targets-timeout=  The timeout for a tcp check on the provided tcp-targets (default: 500) [$TCP_TARGETS_TIMEOUT]
+      --dns-targets-timeout=  The timeout for a tcp check on the provided udp-targets (default: 500) [$DNS_TARGETS_TIMEOUT]
+```
+
+```yaml
+        - name: HTTP_TARGETS
+          value: http://bloomberg.com
+        - name: TCP_TARGETS
+          value: 10.34.5.141:5000 10.34.195.193:6442
+```
+
+the timeouts for the TCP, DNS and HTTP checks can be configured via `TCP_TARGETS_TIMEOUT`, `DNS_TARGETS_TIMEOUT` and `HTTP_TARGETS_TIMEOUT` respectively. 
+
+![screenshot-tcp-http-checks](./extras/tcp-checks-screenshot.png)
 
 ## Usage
 
@@ -300,6 +346,15 @@ annotations:
 
 Similarly, why not :heart: contribute some amazing alerts for others to use ?
 
+### Chaos Engineering
+
+Goldpinger also makes for a pretty good monitoring tool in when practicing Chaos Engineering. Check out [PowerfulSeal](https://github.com/bloomberg/powerfulseal), if you'd like to do some Chaos Engineering for Kubernetes.
+
+## Authors
+
+Goldpinger was created by [Mikolaj Pawlikowski](https://github.com/seeker89) and ported to Go by Chris Green.
+
+
 ## Contributions
 
 We :heart: contributions.

Tiltfile

@@ -0,0 +1,30 @@
+# -*- mode: bazel-starlark -*-
+
+# Build the image
+docker_build('goldpinger-local', '.')
+
+# Deploy with Helm
+k8s_yaml(
+  helm(
+    'charts/goldpinger',
+    set = [
+      # Set the image to the one built by Tilt
+      'image.repository=goldpinger-local',
+    ],
+  )
+)
+
+# Track Goldpinger Resource
+k8s_resource(
+  'chart-goldpinger',
+  port_forwards = [8080],
+)
+
+# Validate that all 2 nodes can talk to eachother
+local_resource(
+  'check_reachability',
+  cmd='./extras/check_reachability.sh 2',
+  resource_deps = [
+    'chart-goldpinger',
+  ],
+)

build/Dockerfile-simple

@@ -1,6 +0,0 @@
-FROM scratch
-
-COPY bin/goldpinger /goldpinger
-COPY static /static
-
-ENTRYPOINT ["/goldpinger", "--static-file-path", "/static"]

build/Dockerfile-vendor

@@ -1,3 +0,0 @@
-ARG TAG
-FROM $TAG
-COPY vendor /goldpinger-vendor-sources

build/build.sh

@@ -24,18 +24,14 @@ if [ -z "${PKG}" ]; then
     echo "PKG must be set"
     exit 1
 fi
-if [ -z "${ARCH}" ]; then
-    echo "ARCH must be set"
-    exit 1
-fi
 if [ -z "${VERSION}" ]; then
     echo "VERSION must be set"
     exit 1
 fi
 
 export CGO_ENABLED=0
-export GOARCH="${ARCH}"
-export GOOS=${GOOS:-}
+export GOARCH="${ARCH:-amd64}"
+export GOOS=${GOOS:-linux}
 
 go build \
     -ldflags "-X 'main.Version=${VERSION}' -X 'main.Build=`date`'" \

charts/goldpinger/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+
+OWNERS

charts/goldpinger/Chart.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+name: goldpinger
+appVersion: "3.10.3"
+version: 1.0.2
+description: Goldpinger is a tool to help debug, troubleshoot and visualize network connectivity and slowness issues.
+home: https://github.com/bloomberg/goldpinger
+sources:
+  - https://github.com/bloomberg/goldpinger

charts/goldpinger/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "goldpinger.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "goldpinger.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "goldpinger.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "goldpinger.labels" -}}
+helm.sh/chart: {{ include "goldpinger.chart" . }}
+{{ include "goldpinger.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "goldpinger.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "goldpinger.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "goldpinger.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "goldpinger.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/goldpinger/templates/clusterrole.yaml

@@ -0,0 +1,12 @@
+{{- if and .Values.rbac.create .Values.rbac.clusterscoped }}
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-clusterrole
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+rules:
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["list"]
+{{- end }}

charts/goldpinger/templates/clusterrolebinding.yaml

@@ -0,0 +1,16 @@
+{{- if and .Values.rbac.create .Values.rbac.clusterscoped }}
+kind: ClusterRoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-clusterrolebinding
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+subjects:
+  - kind: ServiceAccount
+    name: {{ include "goldpinger.serviceAccountName" . }}
+    namespace: {{ .Release.Namespace }}
+roleRef:
+  kind: ClusterRole
+  name: {{ include "goldpinger.fullname" . }}-clusterrole
+  apiGroup: rbac.authorization.k8s.io
+{{- end }}

charts/goldpinger/templates/configmap.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-zap
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+data:
+  zap.json: {{ .Values.goldpinger.zapConfig | toJson }}

charts/goldpinger/templates/daemonset.yaml

@@ -0,0 +1,103 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: {{ include "goldpinger.fullname" . }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+spec:
+  {{- with .Values.updateStrategy }}
+  updateStrategy:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "goldpinger.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{ toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "goldpinger.selectorLabels" . | nindent 8 }}
+      {{- with .Values.podLabels }}
+        {{ toYaml . | nindent 8 }}
+      {{- end }}
+    spec:
+      priorityClassName: {{ .Values.priorityClassName }}
+      serviceAccountName: {{ include "goldpinger.serviceAccountName" . }}
+      {{- if .Values.image.pullSecrets }}
+      imagePullSecrets:
+        {{- range .Values.image.pullSecrets }}
+        - name: {{ . }}
+        {{- end }}
+      {{- end }}
+      containers:
+        - name: goldpinger-daemon
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          volumeMounts:
+            - name: zap
+              mountPath: /config
+          env:
+            - name: HOSTNAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+            - name: HOST
+              value: "0.0.0.0"
+            - name: PORT
+              value: "{{ .Values.goldpinger.port }}"
+            - name: LABEL_SELECTOR
+              value: "app.kubernetes.io/name={{ include "goldpinger.name" . }}"
+            {{- if .Values.extraEnv -}}
+            {{ toYaml .Values.extraEnv | nindent 12 }}
+            {{- end }}
+          {{- with .Values.containerSecurityContext }}
+          securityContext:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.goldpinger.port }}
+              protocol: TCP
+              {{- range $k := .Values.extraEnv }}
+              {{- if and (eq $k.name "USE_HOST_IP") (eq $k.value "true") }}
+              hostPort: {{ $.Values.goldpinger.port }}
+              {{- end }}
+              {{- end }}
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      volumes:
+        - name: zap
+          configMap:
+            name: {{ include "goldpinger.fullname" . }}-zap
+      {{- range $k := .Values.extraEnv }}
+      {{- if and (eq $k.name "USE_HOST_IP") (eq $k.value "true") }}
+      hostNetwork: true
+      {{- end }}
+      {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.podSecurityContext }}
+      securityContext:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/goldpinger/templates/ingress.yaml

@@ -0,0 +1,61 @@
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "goldpinger.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+{{- if and .Values.ingress.className (not (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion)) }}
+  {{- if not (hasKey .Values.ingress.annotations "kubernetes.io/ingress.class") }}
+  {{- $_ := set .Values.ingress.annotations "kubernetes.io/ingress.class" .Values.ingress.className}}
+  {{- end }}
+{{- end }}
+{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1
+{{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1beta1
+{{- else -}}
+apiVersion: extensions/v1beta1
+{{- end }}
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if and .Values.ingress.className (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }}
+  ingressClassName: {{ .Values.ingress.className }}
+  {{- end }}
+  {{- if .Values.ingress.tls }}
+  tls:
+    {{- range .Values.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    {{- range .Values.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+          {{- range .paths }}
+          - path: {{ .path }}
+            {{- if and .pathType (semverCompare ">=1.18-0" $.Capabilities.KubeVersion.GitVersion) }}
+            pathType: {{ .pathType }}
+            {{- end }}
+            backend:
+              {{- if semverCompare ">=1.19-0" $.Capabilities.KubeVersion.GitVersion }}
+              service:
+                name: {{ $fullName }}
+                port:
+                  number: {{ $svcPort }}
+              {{- else }}
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+              {{- end }}
+          {{- end }}
+    {{- end }}
+{{- end }}

charts/goldpinger/templates/prometheusrule.yaml

@@ -0,0 +1,19 @@
+{{- if .Values.prometheusRule.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: {{ template "goldpinger.fullname" . }}
+  {{- if .Values.prometheusRule.namespace }}
+  namespace: {{ .Values.prometheusRule.namespace }}
+  {{- else }}
+  namespace: {{ .Release.Namespace | quote }}
+  {{- end }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+spec:
+  {{- with .Values.prometheusRule.rules }}
+  groups:
+    - name: {{ template "goldpinger.name" $ }}
+      rules: {{- tpl (toYaml .) $ | nindent 8 }}
+  {{- end }}
+{{- end }}

charts/goldpinger/templates/role.yaml

@@ -0,0 +1,20 @@
+{{- if or .Values.podSecurityPolicy.enabled (not .Values.rbac.clusterscoped) }}
+kind: Role
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-pod-security-policy
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+rules:
+{{- if not .Values.rbac.clusterscoped }}
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["list"]
+{{- end }}
+{{- if .Values.podSecurityPolicy.enabled }}
+  - apiGroups: ["extensions"]
+    resources: ["podsecuritypolicies"]
+    resourceNames: [{{ .Values.podSecurityPolicy.policyName | quote }}]
+    verbs: ["use"]
+{{- end }}
+{{- end }}

charts/goldpinger/templates/rolebinding.yaml

@@ -0,0 +1,16 @@
+{{- if or .Values.podSecurityPolicy.enabled (not .Values.rbac.clusterscoped) }}
+kind: RoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-pod-security-policy
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+roleRef:
+  kind: Role
+  name: {{ include "goldpinger.fullname" . }}-pod-security-policy
+  apiGroup: rbac.authorization.k8s.io
+subjects:
+  - kind: ServiceAccount
+    name: {{ include "goldpinger.serviceAccountName" . }}
+    namespace: {{ .Release.Namespace }}
+{{- end }}

charts/goldpinger/templates/service.yaml

@@ -0,0 +1,26 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "goldpinger.fullname" . }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+{{- with .Values.service.labels }}
+{{ toYaml . | indent 4 }}
+{{- end }}
+{{- with .Values.service.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: {{ .Values.goldpinger.port }}
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "goldpinger.selectorLabels" . | nindent 4 }}
+  {{- if .Values.service.loadBalancerSourceRanges }}
+  loadBalancerSourceRanges:
+    {{- toYaml .Values.service.loadBalancerSourceRanges | nindent 4 }}
+  {{- end }}

charts/goldpinger/templates/serviceaccount.yaml

@@ -0,0 +1,8 @@
+{{- if .Values.serviceAccount.create }}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "goldpinger.serviceAccountName" . }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+{{- end }}

charts/goldpinger/templates/servicemonitor.yaml

@@ -0,0 +1,32 @@
+{{- if .Values.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "goldpinger.fullname" . }}
+  {{- if .Values.serviceMonitor.namespace }}
+  namespace: {{ .Values.serviceMonitor.namespace }}
+  {{- end }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+    {{- range $key, $value := .Values.serviceMonitor.selector }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
+spec:
+  endpoints:
+    - port: http
+      interval: {{ .Values.serviceMonitor.interval }}
+      {{- if .Values.serviceMonitor.honorLabels }}
+      honorLabels: true
+      {{- end }}
+      {{- with .Values.serviceMonitor.metricRelabelings }}
+      metricRelabelings:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+  jobLabel: name
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      {{- include "goldpinger.selectorLabels" . | nindent 6 }}
+{{- end -}}

charts/goldpinger/values.yaml

@@ -0,0 +1,166 @@
+# Default values for goldpinger.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+image:
+  repository: bloomberg/goldpinger
+  # Overrides the image tag whose default is the chart appVersion.
+  tag: ""
+  pullPolicy: IfNotPresent
+  ## Optionally specify an array of imagePullSecrets.
+  ## Secrets must be manually created in the namespace.
+  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+  ##
+  # pullSecrets:
+  #   - myRegistryKeySecretName
+
+rbac:
+  create: true
+  clusterscoped: true
+
+serviceAccount:
+  create: true
+  name:
+
+goldpinger:
+  port: 8080
+  zapConfig: |
+    {
+      "level": "info",
+      "encoding": "json",
+      "outputPaths": [
+          "stdout"
+      ],
+      "errorOutputPaths": [
+          "stderr"
+      ],
+      "initialFields": {
+      },
+      "encoderConfig": {
+          "messageKey": "message",
+          "levelKey": "level",
+          "levelEncoder": "lowercase",
+          "timeKey": "ts",
+          "timeEncoder": "ISO8601",
+          "callerKey": "caller",
+          "callerEncoder": "Short"
+      }
+    }
+
+extraEnv: []
+
+service:
+  type: ClusterIP
+  port: 8081
+  annotations: {}
+  labels: {}
+  loadBalancerSourceRanges: {}
+
+ingress:
+  enabled: false
+  className: ""
+  annotations: {}
+    # kubernetes.io/ingress.class: nginx
+    # kubernetes.io/tls-acme: "true"
+  hosts:
+    - host: chart-example.local
+      paths:
+        - path: /
+          pathType: ImplementationSpecific
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local
+
+## Set a priorityClassName for the pod. If left blank a default priority will be set.
+priorityClassName:
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #  cpu: 100m
+  #  memory: 128Mi
+  # requests:
+  #  cpu: 100m
+  #  memory: 128Mi
+
+podAnnotations: {}
+
+podLabels: {}
+
+updateStrategy: {}
+  # type: RollingUpdate
+  # rollingUpdate:
+  #   maxUnavailable: 1
+
+## Node labels for pod assignment
+## Ref: https://kubernetes.io/docs/user-guide/node-selection/
+##
+nodeSelector: {}
+
+## Tolerations for pod assignment
+## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+##
+tolerations: []
+
+## Affinity for pod assignment
+## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+##
+affinity: {}
+
+## Enable this if pod security policy enabled in your cluster
+## It will bind ServiceAccount with unrestricted podSecurityPolicy
+## Ref: https://kubernetes.io/docs/concepts/policy/pod-security-policy/
+podSecurityPolicy:
+  enabled: false
+  policyName: unrestricted-psp
+
+## Set security context of the goldpinger container
+## Ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
+containerSecurityContext:
+  capabilities:
+    drop:
+      - ALL
+  allowPrivilegeEscalation: false
+  readOnlyRootFilesystem: true
+  runAsNonRoot: true
+
+## Set security context of the pod
+## Ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
+podSecurityContext:
+  runAsNonRoot: true
+  runAsUser: 1000
+  fsGroup: 2000
+  seccompProfile:
+    type: RuntimeDefault
+
+serviceMonitor:
+  enabled: false
+  selector:
+    prometheus: "kube-prometheus"
+  # namespace: monitoring
+  interval: 30s
+  # honorLabels: true
+  metricRelabelings: []
+  # - action: drop
+  #   source_labels: [__name__]
+  #   regex: goldpinger_peers_response_time_s_bucket
+
+## Custom PrometheusRule to be defined
+## ref: https://github.com/coreos/prometheus-operator#customresourcedefinitions
+prometheusRule:
+  enabled: false
+  rules:
+    - alert: goldpinger_nodes_unhealthy
+      expr: |
+        sum(goldpinger_nodes_health_total{job="{{ template "goldpinger.fullname" . }}", status="unhealthy"})
+        BY (instance, goldpinger_instance) > 0
+      for: 5m
+      annotations:
+        description: |
+          Goldpinger instance {{ "{{ $labels.goldpinger_instance }}" }} has been reporting unhealthy nodes for at least 5 minutes.
+        summary: Instance {{ "{{ $labels.instance }}" }} down
+      labels:
+        severity: warning

cmd/goldpinger/main.go

@@ -15,17 +15,25 @@
 package main
 
 import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
 	"log"
 	"os"
+	"strings"
+	"time"
 
 	"github.com/go-openapi/loads"
+	"go.uber.org/zap"
+	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"
+	"k8s.io/utils/net"
 
-	"github.com/bloomberg/goldpinger/pkg/goldpinger"
-	"github.com/bloomberg/goldpinger/pkg/restapi"
-	"github.com/bloomberg/goldpinger/pkg/restapi/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/goldpinger"
+	"github.com/bloomberg/goldpinger/v3/pkg/restapi"
+	"github.com/bloomberg/goldpinger/v3/pkg/restapi/operations"
 	flags "github.com/jessevdk/go-flags"
 )
 
@@ -34,14 +42,32 @@ var (
 	Version, Build string
 )
 
+func getLogger(zapconfigpath string) (*zap.Logger, error) {
+	var logger *zap.Logger
+	var err error
+
+	zapconfigJSON, err := ioutil.ReadFile(zapconfigpath)
+	if err != nil {
+		return nil, fmt.Errorf("Could not read zap config file: %w", err)
+	}
+
+	var cfg zap.Config
+	if err := json.Unmarshal(zapconfigJSON, &cfg); err != nil {
+		return nil, fmt.Errorf("Could not read zap config as json: %w", err)
+	}
+	logger, err = cfg.Build()
+	if err != nil {
+		return nil, fmt.Errorf("Could not build zap config: %w", err)
+	}
+
+	return logger, nil
+}
+
 func main() {
-
-	log.Println("Goldpinger version:", Version, "build:", Build)
-
 	// load embedded swagger file
 	swaggerSpec, err := loads.Analyzed(restapi.SwaggerJSON, "")
 	if err != nil {
-		log.Fatalln(err)
+		log.Fatalf("Could not parse swagger: %v", err)
 	}
 
 	// create new service API
@@ -58,7 +84,7 @@ func main() {
 	for _, optsGroup := range api.CommandLineOptionsGroups {
 		_, err := parser.AddGroup(optsGroup.ShortDescription, optsGroup.LongDescription, optsGroup.Options)
 		if err != nil {
-			log.Fatalln(err)
+			log.Fatalf("Could not add flag group: %v", err)
 		}
 	}
 
@@ -72,22 +98,49 @@ func main() {
 		os.Exit(code)
 	}
 
+	// Configure logger
+	logger, err := getLogger(goldpinger.GoldpingerConfig.ZapConfigPath)
+	if err != nil {
+		var errDev error
+		logger, errDev = zap.NewDevelopment()
+		if errDev != nil {
+			log.Fatalf("Could not build a development logger: %v", errDev)
+		}
+		logger.Warn("Logger could not be built, defaulting to development settings", zap.String("error", fmt.Sprintf("%v", err)))
+	}
+	defer logger.Sync()
+
+	undo := zap.RedirectStdLog(logger)
+	defer undo()
+
+	logger.Info("Goldpinger", zap.String("version", Version), zap.String("build", Build))
+
+	if goldpinger.GoldpingerConfig.Namespace == nil {
+		goldpinger.GoldpingerConfig.Namespace = &goldpinger.PodNamespace
+	} else {
+		logger.Info("Using configured namespace", zap.String("namespace", *goldpinger.GoldpingerConfig.Namespace))
+	}
+
 	// make a kubernetes client
 	var config *rest.Config
 	if goldpinger.GoldpingerConfig.KubeConfigPath == "" {
-		log.Println("Kubeconfig not specified, trying to use in cluster config")
+		logger.Info("Kubeconfig not specified, trying to use in cluster config")
 		config, err = rest.InClusterConfig()
 	} else {
-		log.Println("Kubeconfig specified in ", goldpinger.GoldpingerConfig.KubeConfigPath)
+		logger.Info("Kubeconfig specified", zap.String("path", goldpinger.GoldpingerConfig.KubeConfigPath))
 		config, err = clientcmd.BuildConfigFromFlags("", goldpinger.GoldpingerConfig.KubeConfigPath)
 	}
 	if err != nil {
-		log.Fatalln("Error getting config ", err.Error())
+		logger.Fatal("Error getting config ", zap.Error(err))
 	}
+	// communicate to kube-apiserver with protobuf
+	config.AcceptContentTypes = strings.Join([]string{runtime.ContentTypeProtobuf, runtime.ContentTypeJSON}, ",")
+	config.ContentType = runtime.ContentTypeProtobuf
+
 	// create the clientset
 	clientset, err := kubernetes.NewForConfig(config)
 	if err != nil {
-		log.Fatalln("kubernetes.NewForConfig error ", err.Error())
+		logger.Fatal("kubernetes.NewForConfig error ", zap.Error(err))
 	}
 	goldpinger.GoldpingerConfig.KubernetesClient = clientset
 
@@ -97,20 +150,46 @@ func main() {
 	}
 
 	if goldpinger.GoldpingerConfig.PodIP == "" {
-		log.Println("PodIP not set: pinging all pods")
+		logger.Info("PodIP not set: pinging all pods")
 	}
 	if goldpinger.GoldpingerConfig.PingNumber == 0 {
-		log.Println("--ping-number set to 0: pinging all pods")
+		logger.Info("--ping-number set to 0: pinging all pods")
+	}
+	if goldpinger.GoldpingerConfig.IPVersions == nil || len(goldpinger.GoldpingerConfig.IPVersions) == 0 {
+		logger.Info("IPVersions not set: settings to 4 (IPv4)")
+		goldpinger.GoldpingerConfig.IPVersions = []string{"4"}
+	}
+	if len(goldpinger.GoldpingerConfig.IPVersions) > 1 {
+		logger.Warn("Multiple IP versions not supported. Will use first version specified as default", zap.Strings("IPVersions", goldpinger.GoldpingerConfig.IPVersions))
+	}
+	if goldpinger.GoldpingerConfig.IPVersions[0] != string(net.IPv4) && goldpinger.GoldpingerConfig.IPVersions[0] != string(net.IPv6) {
+		logger.Error("Unknown IP version specified: expected values are 4 or 6", zap.Strings("IPVersions", goldpinger.GoldpingerConfig.IPVersions))
+	}
+
+	// Handle deprecated flags
+	if int(goldpinger.GoldpingerConfig.PingTimeout) == 0 {
+		logger.Warn("ping-timeout-ms is deprecated in favor of ping-timeout and will be removed in the future",
+			zap.Int64("ping-timeout-ms", goldpinger.GoldpingerConfig.PingTimeoutMs))
+		goldpinger.GoldpingerConfig.PingTimeout = time.Duration(goldpinger.GoldpingerConfig.PingTimeoutMs) * time.Millisecond
+	}
+	if int(goldpinger.GoldpingerConfig.CheckTimeout) == 0 {
+		logger.Warn("check-timeout-ms is deprecated in favor of check-timeout and will be removed in the future",
+			zap.Int64("check-timeout-ms", goldpinger.GoldpingerConfig.CheckTimeoutMs))
+		goldpinger.GoldpingerConfig.CheckTimeout = time.Duration(goldpinger.GoldpingerConfig.CheckTimeoutMs) * time.Millisecond
+	}
+	if int(goldpinger.GoldpingerConfig.CheckAllTimeout) == 0 {
+		logger.Warn("check-all-timeout-ms is deprecated in favor of check-all-timeout will be removed in the future",
+			zap.Int64("check-all-timeout-ms", goldpinger.GoldpingerConfig.CheckAllTimeoutMs))
+		goldpinger.GoldpingerConfig.CheckAllTimeout = time.Duration(goldpinger.GoldpingerConfig.CheckAllTimeoutMs) * time.Millisecond
 	}
-	goldpinger.GoldpingerConfig.PodSelecter = goldpinger.NewPodSelecter(goldpinger.GoldpingerConfig.PingNumber, goldpinger.GoldpingerConfig.PodIP, goldpinger.GetAllPods)
 
 	server.ConfigureAPI()
 	goldpinger.StartUpdater()
 
-	log.Println("All good, starting serving the API")
+	logger.Info("All good, starting serving the API")
 
 	// serve API
 	if err := server.Serve(); err != nil {
-		log.Fatalln(err)
+		logger.Fatal("Error serving the API", zap.Error(err))
 	}
 }

config/zap.json

@@ -0,0 +1,21 @@
+{
+    "level": "info",
+    "encoding": "json",
+    "outputPaths": [
+        "stdout"
+    ],
+    "errorOutputPaths": [
+        "stderr"
+    ],
+    "initialFields": {
+    },
+    "encoderConfig": {
+        "messageKey": "message",
+        "levelKey": "level",
+        "levelEncoder": "lowercase",
+        "timeKey": "ts",
+        "timeEncoder": "ISO8601",
+        "callerKey": "caller",
+        "callerEncoder": "Short"
+    }
+}

docker-bake.hcl

@@ -0,0 +1,52 @@
+# ref: https://docs.docker.com/build/bake/reference/
+
+# ref: https://github.com/docker/metadata-action?tab=readme-ov-file#bake-definition
+target "docker-metadata-action" {
+  tags = ["goldpinger:latest"]
+}
+
+group "default" {
+  targets = ["linux-simple"]
+}
+
+group "ci" {
+  targets = ["linux-simple", "linux-vendor", "windows-nanoserver-ltsc2019", "windows-nanoserver-ltsc2022"]
+}
+
+target "linux-simple" {
+  inherits = ["docker-metadata-action"]
+  tags = "${formatlist("%s-linux", target.docker-metadata-action.tags)}"
+  platforms = ["linux/amd64", "linux/arm64"]
+  target = "simple"
+}
+
+target "linux-vendor" {
+  inherits = ["docker-metadata-action"]
+  tags = "${formatlist("%s-vendor", target.docker-metadata-action.tags)}"
+  platforms = ["linux/amd64", "linux/arm64"]
+  target = "vendor"
+}
+
+target "windows-nanoserver-ltsc2019" {
+  inherits = ["docker-metadata-action"]
+  tags = "${formatlist("%s-windows-ltsc2019", target.docker-metadata-action.tags)}"
+
+  platforms = ["windows/amd64"]
+
+  target = "windows"
+  args = {
+    WINDOWS_BASE_IMAGE = "mcr.microsoft.com/windows/nanoserver:ltsc2019"
+  }
+}
+
+target "windows-nanoserver-ltsc2022" {
+  inherits = ["docker-metadata-action"]
+  tags = "${formatlist("%s-windows-ltsc2022", target.docker-metadata-action.tags)}"
+
+  platforms = ["windows/amd64"]
+
+  target = "windows"
+  args = {
+    WINDOWS_BASE_IMAGE = "mcr.microsoft.com/windows/nanoserver:ltsc2022"
+  }
+}

docker_deploy.sh

@@ -1,8 +0,0 @@
-#!/bin/sh
-
-docker login -u "$DOCKER_USER" -p "$DOCKER_PASSWORD" \
-    && make tag \
-    && make push \
-    && make vendor-tag \
-    && make vendor-push
-

extras/check_reachability.sh

@@ -0,0 +1,84 @@
+#!/bin/bash
+
+# This is a simple script, used in the Tilt GitHub Action
+# to validate that all worker nodes can inter-communicate.
+
+function print_help() {
+  echo "Usage: $0 [EXPECTED_HOST_COUNT]"
+  echo "Arguments:"
+  echo "  EXPECTED_HOST_COUNT: The number of expected hosts in the Goldpinger output."
+  echo "Examples:"
+  echo "  $0 2"
+}
+
+if [ "$#" -ne 1 ]; then
+  echo "Error: Invalid number of arguments."
+  print_help
+  exit 1
+fi
+
+if ! [[ $1 =~ ^[0-9]+$ ]]; then
+  echo "Error: EXPECTED_HOST_COUNT must be a number."
+  print_help
+  exit 1
+fi
+
+expected_host_count=$1
+goldpinger_output=""
+retry_count=0
+host_count=0
+
+while :; do
+  if [ "$retry_count" -ge 20 ]; then
+    echo "Error: Failed to fetch Goldpinger output after 10 attempts."
+    exit 1
+  fi
+  
+  echo "Sleeping for 8s..."
+  let retry_count++
+  sleep 8
+
+  echo "Attempt $((retry_count)) to fetch Goldpinger output."
+  goldpinger_output=$(curl -s http://localhost:8080/check_all)
+  echo "Goldpinger output: $goldpinger_output"
+
+  if [ "$goldpinger_output" == "null" ] || [ -z "$goldpinger_output" ]; then
+    echo "Goldpinger output is null or empty, retrying..."
+    continue
+  fi
+
+  host_count=$(echo "$goldpinger_output" | jq '.hosts | length')
+  if [ "$host_count" -ne "$expected_host_count" ]; then
+    echo "Goldpinger has not identified all hosts, retrying..."
+    continue
+  fi
+
+  for host in $(echo $goldpinger_output | jq -r '.responses | keys[]'); do
+    checksForPod=$(echo "$goldpinger_output" | jq -r --arg host "$host" '.responses[$host].response.podResults | length')
+    if [ "$checksForPod" -ne "$expected_host_count" ]; then
+      echo "Check for $host is not OK, retrying..."
+      continue 2
+    fi
+  done
+
+  break
+done
+
+all_hosts_can_talk=true
+for host in $(echo $goldpinger_output | jq -r '.responses | keys[]'); do
+  for target in $(echo $goldpinger_output | jq -r --arg host $host '.responses[$host].response.podResults | keys[]'); do
+    ok=$(echo $goldpinger_output | jq -r --arg host $host --arg target $target '.responses[$host].response.podResults[$target].OK')
+    if [ "$ok" != "true" ]; then
+      all_hosts_can_talk=false
+      break 2
+    fi
+  done
+done
+
+if [[ $host_count -eq $expected_host_count ]] && [[ $all_hosts_can_talk == "true" ]]; then
+  echo "Validation successful. There are $expected_host_count hosts and they can talk to each other."
+else
+  echo "Validation failed. Expected $expected_host_count hosts but found $host_count, or not all hosts can talk to each other."
+  echo "Goldpinger Output: $goldpinger_output"
+  exit 1
+fi

extras/example-serviceaccounts.yml

@@ -46,7 +46,7 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: status.podIP
-          image: "docker.io/bloomberg/goldpinger:2.0.0"
+          image: "docker.io/bloomberg/goldpinger:v3.0.0"
           imagePullPolicy: Always
           securityContext:
             allowPrivilegeEscalation: false
@@ -102,7 +102,7 @@ rules:
   - list
 
 ---
-apiVersion: rbac.authorization.k8s.io/v1beta1
+apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
   name: goldpinger-clusterrolebinding

extras/example-with-kubeconfig.yaml

@@ -5,19 +5,16 @@ metadata:
   name: goldpinger
   labels:
     app: goldpinger
-    version: "2.0.0"
 spec:
   updateStrategy:
     type: RollingUpdate
   selector:
     matchLabels:
       app: goldpinger
-      version: "2.0.0"
   template:
     metadata:
       labels:
         app: goldpinger
-        version: "2.0.0"
     spec:
       securityContext:
         runAsNonRoot: true
@@ -52,7 +49,7 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: status.podIP
-          image: "docker.io/bloomberg/goldpinger:2.0.0"
+          image: "docker.io/bloomberg/goldpinger:v3.0.0"
           imagePullPolicy: Always
           securityContext:
             allowPrivilegeEscalation: false

go.mod

@@ -1,51 +1,97 @@
-module github.com/bloomberg/goldpinger
+module github.com/bloomberg/goldpinger/v3
 
-go 1.14
+go 1.25.0
 
 require (
-	github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
 	github.com/cespare/xxhash v1.1.0
-	github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680 // indirect
-	github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8 // indirect
-	github.com/go-openapi/analysis v0.17.2 // indirect
-	github.com/go-openapi/errors v0.17.2
-	github.com/go-openapi/jsonpointer v0.17.2 // indirect
-	github.com/go-openapi/jsonreference v0.17.2 // indirect
-	github.com/go-openapi/loads v0.17.2
-	github.com/go-openapi/runtime v0.17.2
-	github.com/go-openapi/spec v0.17.2
-	github.com/go-openapi/strfmt v0.17.2
-	github.com/go-openapi/swag v0.17.2
-	github.com/go-openapi/validate v0.17.2
-	github.com/gogo/protobuf v0.0.0-20170330071051-c0656edd0d9e // indirect
-	github.com/golang/glog v0.0.0-20141105023935-44145f04b68c // indirect
-	github.com/google/btree v1.0.0 // indirect
-	github.com/google/gofuzz v0.0.0-20161122191042-44d81051d367 // indirect
-	github.com/googleapis/gnostic v0.0.0-20170729233727-0c5108395e2d // indirect
-	github.com/gregjones/httpcache v0.0.0-20170728041850-787624de3eb7 // indirect
-	github.com/imdario/mergo v0.3.5 // indirect
-	github.com/jessevdk/go-flags v1.4.0
-	github.com/json-iterator/go v0.0.0-20180612202835-f2b4162afba3 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
-	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
-	github.com/prometheus/client_golang v0.9.1
-	github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 // indirect
-	github.com/prometheus/common v0.0.0-20181020173914-7e9e6cabbd39 // indirect
-	github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d // indirect
-	github.com/spf13/pflag v1.0.1 // indirect
+	github.com/go-openapi/errors v0.22.6
+	github.com/go-openapi/loads v0.23.2
+	github.com/go-openapi/runtime v0.29.2
+	github.com/go-openapi/spec v0.22.3
+	github.com/go-openapi/strfmt v0.25.0
+	github.com/go-openapi/swag v0.25.4
+	github.com/go-openapi/validate v0.25.1
+	github.com/jessevdk/go-flags v1.6.1
+	github.com/prometheus/client_golang v1.23.2
 	github.com/stuartnelson3/go-rendezvous v0.2.0
-	golang.org/x/crypto v0.0.0-20180808211826-de0752318171 // indirect
-	golang.org/x/image v0.0.0-20190220214146-31aff87c08e9
-	golang.org/x/net v0.0.0-20181106065722-10aee1819953
-	golang.org/x/oauth2 v0.0.0-20170412232759-a6bd8cefa181 // indirect
-	golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a // indirect
-	golang.org/x/sys v0.0.0-20181106073832-7155702f2d47 // indirect
-	golang.org/x/time v0.0.0-20161028155119-f51c12702a4d // indirect
-	google.golang.org/appengine v1.3.0 // indirect
-	gopkg.in/inf.v0 v0.9.0 // indirect
-	k8s.io/api v0.0.0-20181004124137-fd83cbc87e76 // indirect
-	k8s.io/apimachinery v0.0.0-20180913025736-6dd46049f395
-	k8s.io/client-go v9.0.0+incompatible
+	go.uber.org/zap v1.27.1
+	golang.org/x/image v0.35.0
+	golang.org/x/net v0.49.0
+	k8s.io/api v0.35.0
+	k8s.io/apimachinery v0.35.0
+	k8s.io/client-go v0.35.0
+	k8s.io/utils v0.0.0-20260108192941-914a6e750570
+)
+
+require (
+	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
+	github.com/emicklei/go-restful/v3 v3.13.0 // indirect
+	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-openapi/analysis v0.24.2 // indirect
+	github.com/go-openapi/jsonpointer v0.22.4 // indirect
+	github.com/go-openapi/jsonreference v0.21.4 // indirect
+	github.com/go-openapi/swag/cmdutils v0.25.4 // indirect
+	github.com/go-openapi/swag/conv v0.25.4 // indirect
+	github.com/go-openapi/swag/fileutils v0.25.4 // indirect
+	github.com/go-openapi/swag/jsonname v0.25.4 // indirect
+	github.com/go-openapi/swag/jsonutils v0.25.4 // indirect
+	github.com/go-openapi/swag/loading v0.25.4 // indirect
+	github.com/go-openapi/swag/mangling v0.25.4 // indirect
+	github.com/go-openapi/swag/netutils v0.25.4 // indirect
+	github.com/go-openapi/swag/stringutils v0.25.4 // indirect
+	github.com/go-openapi/swag/typeutils v0.25.4 // indirect
+	github.com/go-openapi/swag/yamlutils v0.25.4 // indirect
+	github.com/go-viper/mapstructure/v2 v2.5.0 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/gnostic-models v0.7.1 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/imdario/mergo v0.3.16 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/mailru/easyjson v0.9.1 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/oklog/ulid v1.3.1 // indirect
+	github.com/opentracing/opentracing-go v1.2.0 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
+	github.com/prometheus/procfs v0.19.2 // indirect
+	github.com/spf13/pflag v1.0.10 // indirect
+	github.com/x448/float16 v0.8.4 // indirect
+	go.mongodb.org/mongo-driver v1.17.7 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/otel v1.39.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/oauth2 v0.34.0 // indirect
+	golang.org/x/sync v0.19.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
+	golang.org/x/term v0.39.0 // indirect
+	golang.org/x/text v0.33.0 // indirect
+	golang.org/x/time v0.14.0 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
+	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/klog/v2 v2.130.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20260127142750-a19766b6e2d4 // indirect
+	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
+	sigs.k8s.io/randfill v1.0.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.7.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v6 v6.3.1 // indirect
+	sigs.k8s.io/yaml v1.6.0 // indirect
 )

go.sum

@@ -1,138 +1,337 @@
 github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/PuerkitoBio/purell v1.1.0 h1:rmGxhojJlM0tuKtfdvliR84CFHljx9ag64t2xmVkjK4=
-github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
-github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
-github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
-github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf h1:eg0MeVzsP1G42dRafH3vf+al2vQIJU0YHX+1Tw87oco=
-github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 h1:DklsrG3dyBCFEj5IhUbnKptjxatkF07cF2ak3yi77so=
+github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/docker/go-units v0.3.3 h1:Xk8S3Xj5sLGlG5g67hJmYMmUgXv5N4PhkjJHHqrwnTk=
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+k8s.io/klog/v2 v2.120.1 h1:QXU6cPEOIslTGvZaXvFWiP9VKyeet3sawzTOvdXb4Vw=
+k8s.io/klog/v2 v2.120.1/go.mod h1:3Jpz1GvMt720eyJH1ckRHK1EDfpxISzJ7I9OYgaDtPE=
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+k8s.io/kube-openapi v0.0.0-20240411171206-dc4e619f62f3/go.mod h1:yD4MZYeKMBwQKVht279WycxKyM84kkAx2DPrTXaeb98=
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+k8s.io/kube-openapi v0.0.0-20260127142750-a19766b6e2d4/go.mod h1:kdmbQkyfwUagLfXIad1y2TdrjPFWp2Q89B3qkRwf/pQ=
+k8s.io/utils v0.0.0-20240310230437-4693a0247e57 h1:gbqbevonBh57eILzModw6mrkbwM0gQBEuevE/AaBsHY=
+k8s.io/utils v0.0.0-20240310230437-4693a0247e57/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
+k8s.io/utils v0.0.0-20260108192941-914a6e750570 h1:JT4W8lsdrGENg9W+YwwdLJxklIuKWdRm+BC+xt33FOY=
+k8s.io/utils v0.0.0-20260108192941-914a6e750570/go.mod h1:xDxuJ0whA3d0I4mf/C4ppKHxXynQ+fxnkmQH0vTHnuk=
+sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo=
+sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
+sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 h1:IpInykpT6ceI+QxKBbEflcR5EXP7sU1kvOlxwZh5txg=
+sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730/go.mod h1:mdzfpAEoE6DHQEN0uh9ZbOCuHbLK5wOm7dK4ctXE9Tg=
+sigs.k8s.io/randfill v0.0.0-20250304075658-069ef1bbf016/go.mod h1:XeLlZ/jmk4i1HRopwe7/aU3H5n1zNUcX6TM94b3QxOY=
+sigs.k8s.io/randfill v1.0.0 h1:JfjMILfT8A6RbawdsK2JXGBR5AQVfd+9TbzrlneTyrU=
+sigs.k8s.io/randfill v1.0.0/go.mod h1:XeLlZ/jmk4i1HRopwe7/aU3H5n1zNUcX6TM94b3QxOY=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1 h1:150L+0vs/8DA78h1u02ooW1/fFq/Lwr+sGiqlzvrtq4=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1/go.mod h1:N8hJocpFajUSSeSJ9bOZ77VzejKZaXsTtZo4/u7Io08=
+sigs.k8s.io/structured-merge-diff/v4 v4.7.0 h1:qPeWmscJcXP0snki5IYF79Z8xrl8ETFxgMd7wez1XkI=
+sigs.k8s.io/structured-merge-diff/v4 v4.7.0/go.mod h1:dDy58f92j70zLsuZVuUX5Wp9vtxXpaZnkPGWeqDfCps=
+sigs.k8s.io/structured-merge-diff/v6 v6.3.1 h1:JrhdFMqOd/+3ByqlP2I45kTOZmTRLBUm5pvRjeheg7E=
+sigs.k8s.io/structured-merge-diff/v6 v6.3.1/go.mod h1:M3W8sfWvn2HhQDIbGWj3S099YozAsymCo/wrT5ohRUE=
+sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E=
+sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY=
+sigs.k8s.io/yaml v1.6.0 h1:G8fkbMSAFqgEFgh4b1wmtzDnioxFCUgTZhlbj5P9QYs=
+sigs.k8s.io/yaml v1.6.0/go.mod h1:796bPqUfzR/0jLAl6XjHl3Ck7MiyVv8dbTdyT3/pMf4=

kind.yaml

@@ -0,0 +1,17 @@
+apiVersion: ctlptl.dev/v1alpha1
+kind: Registry
+name: ctlptl-registry
+port: 20021
+---
+apiVersion: ctlptl.dev/v1alpha1
+kind: Cluster
+product: kind
+registry: ctlptl-registry
+kindV1Alpha4Cluster:
+  name: goldpinger-test
+  nodes:
+  - role: control-plane
+  - role: worker
+  - role: worker
+  networking:
+    apiServerPort: 30022

pkg/client/goldpinger_client.go

@@ -6,12 +6,10 @@ package client
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
+	"github.com/bloomberg/goldpinger/v3/pkg/client/operations"
 	"github.com/go-openapi/runtime"
 	httptransport "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
-
-	"github.com/bloomberg/goldpinger/pkg/client/operations"
+	"github.com/go-openapi/strfmt"
 )
 
 // Default goldpinger HTTP client.
@@ -56,9 +54,7 @@ func New(transport runtime.ClientTransport, formats strfmt.Registry) *Goldpinger
 
 	cli := new(Goldpinger)
 	cli.Transport = transport
-
 	cli.Operations = operations.New(transport, formats)
-
 	return cli
 }
 
@@ -103,7 +99,7 @@ func (cfg *TransportConfig) WithSchemes(schemes []string) *TransportConfig {
 
 // Goldpinger is a client for goldpinger
 type Goldpinger struct {
-	Operations *operations.Client
+	Operations operations.ClientService
 
 	Transport runtime.ClientTransport
 }
@@ -111,7 +107,5 @@ type Goldpinger struct {
 // SetTransport changes the transport on the client and all its subresources
 func (c *Goldpinger) SetTransport(transport runtime.ClientTransport) {
 	c.Transport = transport
-
 	c.Operations.SetTransport(transport)
-
 }

pkg/client/operations/check_all_pods_parameters.go

@@ -13,51 +13,49 @@ import (
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	cr "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/strfmt"
 )
 
-// NewCheckAllPodsParams creates a new CheckAllPodsParams object
-// with the default values initialized.
+// NewCheckAllPodsParams creates a new CheckAllPodsParams object,
+// with the default timeout for this client.
+//
+// Default values are not hydrated, since defaults are normally applied by the API server side.
+//
+// To enforce default values in parameter, use SetDefaults or WithDefaults.
 func NewCheckAllPodsParams() *CheckAllPodsParams {
-
 	return &CheckAllPodsParams{
-
 		timeout: cr.DefaultTimeout,
 	}
 }
 
 // NewCheckAllPodsParamsWithTimeout creates a new CheckAllPodsParams object
-// with the default values initialized, and the ability to set a timeout on a request
+// with the ability to set a timeout on a request.
 func NewCheckAllPodsParamsWithTimeout(timeout time.Duration) *CheckAllPodsParams {
-
 	return &CheckAllPodsParams{
-
 		timeout: timeout,
 	}
 }
 
 // NewCheckAllPodsParamsWithContext creates a new CheckAllPodsParams object
-// with the default values initialized, and the ability to set a context for a request
+// with the ability to set a context for a request.
 func NewCheckAllPodsParamsWithContext(ctx context.Context) *CheckAllPodsParams {
-
 	return &CheckAllPodsParams{
-
 		Context: ctx,
 	}
 }
 
 // NewCheckAllPodsParamsWithHTTPClient creates a new CheckAllPodsParams object
-// with the default values initialized, and the ability to set a custom HTTPClient for a request
+// with the ability to set a custom HTTPClient for a request.
 func NewCheckAllPodsParamsWithHTTPClient(client *http.Client) *CheckAllPodsParams {
-
 	return &CheckAllPodsParams{
 		HTTPClient: client,
 	}
 }
 
-/*CheckAllPodsParams contains all the parameters to send to the API endpoint
-for the check all pods operation typically these are written to a http.Request
+/* CheckAllPodsParams contains all the parameters to send to the API endpoint
+   for the check all pods operation.
+
+   Typically these are written to a http.Request.
 */
 type CheckAllPodsParams struct {
 	timeout    time.Duration
@@ -65,6 +63,21 @@ type CheckAllPodsParams struct {
 	HTTPClient *http.Client
 }
 
+// WithDefaults hydrates default values in the check all pods params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *CheckAllPodsParams) WithDefaults() *CheckAllPodsParams {
+	o.SetDefaults()
+	return o
+}
+
+// SetDefaults hydrates default values in the check all pods params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *CheckAllPodsParams) SetDefaults() {
+	// no default values defined for this parameter
+}
+
 // WithTimeout adds the timeout to the check all pods params
 func (o *CheckAllPodsParams) WithTimeout(timeout time.Duration) *CheckAllPodsParams {
 	o.SetTimeout(timeout)

pkg/client/operations/check_all_pods_responses.go

@@ -10,10 +10,9 @@ import (
 	"io"
 
 	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 
-	strfmt "github.com/go-openapi/strfmt"
-
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // CheckAllPodsReader is a Reader for the CheckAllPods structure.
@@ -24,16 +23,14 @@ type CheckAllPodsReader struct {
 // ReadResponse reads a server response into the received o.
 func (o *CheckAllPodsReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
 	switch response.Code() {
-
 	case 200:
 		result := NewCheckAllPodsOK()
 		if err := result.readResponse(response, consumer, o.formats); err != nil {
 			return nil, err
 		}
 		return result, nil
-
 	default:
-		return nil, runtime.NewAPIError("unknown error", response, response.Code())
+		return nil, runtime.NewAPIError("response status code does not match any response statuses defined for this endpoint in the swagger spec", response, response.Code())
 	}
 }
 
@@ -42,7 +39,7 @@ func NewCheckAllPodsOK() *CheckAllPodsOK {
 	return &CheckAllPodsOK{}
 }
 
-/*CheckAllPodsOK handles this case with default header values.
+/* CheckAllPodsOK describes a response with status code 200, with default header values.
 
 Success, return response
 */
@@ -53,6 +50,9 @@ type CheckAllPodsOK struct {
 func (o *CheckAllPodsOK) Error() string {
 	return fmt.Sprintf("[GET /check_all][%d] checkAllPodsOK  %+v", 200, o.Payload)
 }
+func (o *CheckAllPodsOK) GetPayload() *models.CheckAllResults {
+	return o.Payload
+}
 
 func (o *CheckAllPodsOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
 

pkg/client/operations/check_service_pods_parameters.go

@@ -13,51 +13,49 @@ import (
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	cr "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/strfmt"
 )
 
-// NewCheckServicePodsParams creates a new CheckServicePodsParams object
-// with the default values initialized.
+// NewCheckServicePodsParams creates a new CheckServicePodsParams object,
+// with the default timeout for this client.
+//
+// Default values are not hydrated, since defaults are normally applied by the API server side.
+//
+// To enforce default values in parameter, use SetDefaults or WithDefaults.
 func NewCheckServicePodsParams() *CheckServicePodsParams {
-
 	return &CheckServicePodsParams{
-
 		timeout: cr.DefaultTimeout,
 	}
 }
 
 // NewCheckServicePodsParamsWithTimeout creates a new CheckServicePodsParams object
-// with the default values initialized, and the ability to set a timeout on a request
+// with the ability to set a timeout on a request.
 func NewCheckServicePodsParamsWithTimeout(timeout time.Duration) *CheckServicePodsParams {
-
 	return &CheckServicePodsParams{
-
 		timeout: timeout,
 	}
 }
 
 // NewCheckServicePodsParamsWithContext creates a new CheckServicePodsParams object
-// with the default values initialized, and the ability to set a context for a request
+// with the ability to set a context for a request.
 func NewCheckServicePodsParamsWithContext(ctx context.Context) *CheckServicePodsParams {
-
 	return &CheckServicePodsParams{
-
 		Context: ctx,
 	}
 }
 
 // NewCheckServicePodsParamsWithHTTPClient creates a new CheckServicePodsParams object
-// with the default values initialized, and the ability to set a custom HTTPClient for a request
+// with the ability to set a custom HTTPClient for a request.
 func NewCheckServicePodsParamsWithHTTPClient(client *http.Client) *CheckServicePodsParams {
-
 	return &CheckServicePodsParams{
 		HTTPClient: client,
 	}
 }
 
-/*CheckServicePodsParams contains all the parameters to send to the API endpoint
-for the check service pods operation typically these are written to a http.Request
+/* CheckServicePodsParams contains all the parameters to send to the API endpoint
+   for the check service pods operation.
+
+   Typically these are written to a http.Request.
 */
 type CheckServicePodsParams struct {
 	timeout    time.Duration
@@ -65,6 +63,21 @@ type CheckServicePodsParams struct {
 	HTTPClient *http.Client
 }
 
+// WithDefaults hydrates default values in the check service pods params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *CheckServicePodsParams) WithDefaults() *CheckServicePodsParams {
+	o.SetDefaults()
+	return o
+}
+
+// SetDefaults hydrates default values in the check service pods params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *CheckServicePodsParams) SetDefaults() {
+	// no default values defined for this parameter
+}
+
 // WithTimeout adds the timeout to the check service pods params
 func (o *CheckServicePodsParams) WithTimeout(timeout time.Duration) *CheckServicePodsParams {
 	o.SetTimeout(timeout)

pkg/client/operations/check_service_pods_responses.go

@@ -10,10 +10,9 @@ import (
 	"io"
 
 	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 
-	strfmt "github.com/go-openapi/strfmt"
-
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // CheckServicePodsReader is a Reader for the CheckServicePods structure.
@@ -24,16 +23,14 @@ type CheckServicePodsReader struct {
 // ReadResponse reads a server response into the received o.
 func (o *CheckServicePodsReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
 	switch response.Code() {
-
 	case 200:
 		result := NewCheckServicePodsOK()
 		if err := result.readResponse(response, consumer, o.formats); err != nil {
 			return nil, err
 		}
 		return result, nil
-
 	default:
-		return nil, runtime.NewAPIError("unknown error", response, response.Code())
+		return nil, runtime.NewAPIError("response status code does not match any response statuses defined for this endpoint in the swagger spec", response, response.Code())
 	}
 }
 
@@ -42,7 +39,7 @@ func NewCheckServicePodsOK() *CheckServicePodsOK {
 	return &CheckServicePodsOK{}
 }
 
-/*CheckServicePodsOK handles this case with default header values.
+/* CheckServicePodsOK describes a response with status code 200, with default header values.
 
 Success, return response
 */
@@ -53,6 +50,9 @@ type CheckServicePodsOK struct {
 func (o *CheckServicePodsOK) Error() string {
 	return fmt.Sprintf("[GET /check][%d] checkServicePodsOK  %+v", 200, o.Payload)
 }
+func (o *CheckServicePodsOK) GetPayload() *models.CheckResults {
+	return o.Payload
+}
 
 func (o *CheckServicePodsOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
 

pkg/client/operations/cluster_health_parameters.go

@@ -0,0 +1,126 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"context"
+	"net/http"
+	"time"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime"
+	cr "github.com/go-openapi/runtime/client"
+	"github.com/go-openapi/strfmt"
+)
+
+// NewClusterHealthParams creates a new ClusterHealthParams object,
+// with the default timeout for this client.
+//
+// Default values are not hydrated, since defaults are normally applied by the API server side.
+//
+// To enforce default values in parameter, use SetDefaults or WithDefaults.
+func NewClusterHealthParams() *ClusterHealthParams {
+	return &ClusterHealthParams{
+		timeout: cr.DefaultTimeout,
+	}
+}
+
+// NewClusterHealthParamsWithTimeout creates a new ClusterHealthParams object
+// with the ability to set a timeout on a request.
+func NewClusterHealthParamsWithTimeout(timeout time.Duration) *ClusterHealthParams {
+	return &ClusterHealthParams{
+		timeout: timeout,
+	}
+}
+
+// NewClusterHealthParamsWithContext creates a new ClusterHealthParams object
+// with the ability to set a context for a request.
+func NewClusterHealthParamsWithContext(ctx context.Context) *ClusterHealthParams {
+	return &ClusterHealthParams{
+		Context: ctx,
+	}
+}
+
+// NewClusterHealthParamsWithHTTPClient creates a new ClusterHealthParams object
+// with the ability to set a custom HTTPClient for a request.
+func NewClusterHealthParamsWithHTTPClient(client *http.Client) *ClusterHealthParams {
+	return &ClusterHealthParams{
+		HTTPClient: client,
+	}
+}
+
+/* ClusterHealthParams contains all the parameters to send to the API endpoint
+   for the cluster health operation.
+
+   Typically these are written to a http.Request.
+*/
+type ClusterHealthParams struct {
+	timeout    time.Duration
+	Context    context.Context
+	HTTPClient *http.Client
+}
+
+// WithDefaults hydrates default values in the cluster health params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *ClusterHealthParams) WithDefaults() *ClusterHealthParams {
+	o.SetDefaults()
+	return o
+}
+
+// SetDefaults hydrates default values in the cluster health params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *ClusterHealthParams) SetDefaults() {
+	// no default values defined for this parameter
+}
+
+// WithTimeout adds the timeout to the cluster health params
+func (o *ClusterHealthParams) WithTimeout(timeout time.Duration) *ClusterHealthParams {
+	o.SetTimeout(timeout)
+	return o
+}
+
+// SetTimeout adds the timeout to the cluster health params
+func (o *ClusterHealthParams) SetTimeout(timeout time.Duration) {
+	o.timeout = timeout
+}
+
+// WithContext adds the context to the cluster health params
+func (o *ClusterHealthParams) WithContext(ctx context.Context) *ClusterHealthParams {
+	o.SetContext(ctx)
+	return o
+}
+
+// SetContext adds the context to the cluster health params
+func (o *ClusterHealthParams) SetContext(ctx context.Context) {
+	o.Context = ctx
+}
+
+// WithHTTPClient adds the HTTPClient to the cluster health params
+func (o *ClusterHealthParams) WithHTTPClient(client *http.Client) *ClusterHealthParams {
+	o.SetHTTPClient(client)
+	return o
+}
+
+// SetHTTPClient adds the HTTPClient to the cluster health params
+func (o *ClusterHealthParams) SetHTTPClient(client *http.Client) {
+	o.HTTPClient = client
+}
+
+// WriteToRequest writes these params to a swagger request
+func (o *ClusterHealthParams) WriteToRequest(r runtime.ClientRequest, reg strfmt.Registry) error {
+
+	if err := r.SetTimeout(o.timeout); err != nil {
+		return err
+	}
+	var res []error
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}

pkg/client/operations/cluster_health_responses.go

@@ -0,0 +1,105 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
+
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
+)
+
+// ClusterHealthReader is a Reader for the ClusterHealth structure.
+type ClusterHealthReader struct {
+	formats strfmt.Registry
+}
+
+// ReadResponse reads a server response into the received o.
+func (o *ClusterHealthReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
+	switch response.Code() {
+	case 200:
+		result := NewClusterHealthOK()
+		if err := result.readResponse(response, consumer, o.formats); err != nil {
+			return nil, err
+		}
+		return result, nil
+	case 418:
+		result := NewClusterHealthIMATeapot()
+		if err := result.readResponse(response, consumer, o.formats); err != nil {
+			return nil, err
+		}
+		return nil, result
+	default:
+		return nil, runtime.NewAPIError("response status code does not match any response statuses defined for this endpoint in the swagger spec", response, response.Code())
+	}
+}
+
+// NewClusterHealthOK creates a ClusterHealthOK with default headers values
+func NewClusterHealthOK() *ClusterHealthOK {
+	return &ClusterHealthOK{}
+}
+
+/* ClusterHealthOK describes a response with status code 200, with default header values.
+
+Healthy cluster
+*/
+type ClusterHealthOK struct {
+	Payload *models.ClusterHealthResults
+}
+
+func (o *ClusterHealthOK) Error() string {
+	return fmt.Sprintf("[GET /cluster_health][%d] clusterHealthOK  %+v", 200, o.Payload)
+}
+func (o *ClusterHealthOK) GetPayload() *models.ClusterHealthResults {
+	return o.Payload
+}
+
+func (o *ClusterHealthOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
+
+	o.Payload = new(models.ClusterHealthResults)
+
+	// response payload
+	if err := consumer.Consume(response.Body(), o.Payload); err != nil && err != io.EOF {
+		return err
+	}
+
+	return nil
+}
+
+// NewClusterHealthIMATeapot creates a ClusterHealthIMATeapot with default headers values
+func NewClusterHealthIMATeapot() *ClusterHealthIMATeapot {
+	return &ClusterHealthIMATeapot{}
+}
+
+/* ClusterHealthIMATeapot describes a response with status code 418, with default header values.
+
+Unhealthy cluster
+*/
+type ClusterHealthIMATeapot struct {
+	Payload *models.ClusterHealthResults
+}
+
+func (o *ClusterHealthIMATeapot) Error() string {
+	return fmt.Sprintf("[GET /cluster_health][%d] clusterHealthIMATeapot  %+v", 418, o.Payload)
+}
+func (o *ClusterHealthIMATeapot) GetPayload() *models.ClusterHealthResults {
+	return o.Payload
+}
+
+func (o *ClusterHealthIMATeapot) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
+
+	o.Payload = new(models.ClusterHealthResults)
+
+	// response payload
+	if err := consumer.Consume(response.Body(), o.Payload); err != nil && err != io.EOF {
+		return err
+	}
+
+	return nil
+}

pkg/client/operations/healthz_parameters.go

@@ -13,51 +13,49 @@ import (
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	cr "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/strfmt"
 )
 
-// NewHealthzParams creates a new HealthzParams object
-// with the default values initialized.
+// NewHealthzParams creates a new HealthzParams object,
+// with the default timeout for this client.
+//
+// Default values are not hydrated, since defaults are normally applied by the API server side.
+//
+// To enforce default values in parameter, use SetDefaults or WithDefaults.
 func NewHealthzParams() *HealthzParams {
-
 	return &HealthzParams{
-
 		timeout: cr.DefaultTimeout,
 	}
 }
 
 // NewHealthzParamsWithTimeout creates a new HealthzParams object
-// with the default values initialized, and the ability to set a timeout on a request
+// with the ability to set a timeout on a request.
 func NewHealthzParamsWithTimeout(timeout time.Duration) *HealthzParams {
-
 	return &HealthzParams{
-
 		timeout: timeout,
 	}
 }
 
 // NewHealthzParamsWithContext creates a new HealthzParams object
-// with the default values initialized, and the ability to set a context for a request
+// with the ability to set a context for a request.
 func NewHealthzParamsWithContext(ctx context.Context) *HealthzParams {
-
 	return &HealthzParams{
-
 		Context: ctx,
 	}
 }
 
 // NewHealthzParamsWithHTTPClient creates a new HealthzParams object
-// with the default values initialized, and the ability to set a custom HTTPClient for a request
+// with the ability to set a custom HTTPClient for a request.
 func NewHealthzParamsWithHTTPClient(client *http.Client) *HealthzParams {
-
 	return &HealthzParams{
 		HTTPClient: client,
 	}
 }
 
-/*HealthzParams contains all the parameters to send to the API endpoint
-for the healthz operation typically these are written to a http.Request
+/* HealthzParams contains all the parameters to send to the API endpoint
+   for the healthz operation.
+
+   Typically these are written to a http.Request.
 */
 type HealthzParams struct {
 	timeout    time.Duration
@@ -65,6 +63,21 @@ type HealthzParams struct {
 	HTTPClient *http.Client
 }
 
+// WithDefaults hydrates default values in the healthz params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *HealthzParams) WithDefaults() *HealthzParams {
+	o.SetDefaults()
+	return o
+}
+
+// SetDefaults hydrates default values in the healthz params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *HealthzParams) SetDefaults() {
+	// no default values defined for this parameter
+}
+
 // WithTimeout adds the timeout to the healthz params
 func (o *HealthzParams) WithTimeout(timeout time.Duration) *HealthzParams {
 	o.SetTimeout(timeout)

pkg/client/operations/healthz_responses.go

@@ -10,10 +10,9 @@ import (
 	"io"
 
 	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 
-	strfmt "github.com/go-openapi/strfmt"
-
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // HealthzReader is a Reader for the Healthz structure.
@@ -24,23 +23,20 @@ type HealthzReader struct {
 // ReadResponse reads a server response into the received o.
 func (o *HealthzReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
 	switch response.Code() {
-
 	case 200:
 		result := NewHealthzOK()
 		if err := result.readResponse(response, consumer, o.formats); err != nil {
 			return nil, err
 		}
 		return result, nil
-
 	case 503:
 		result := NewHealthzServiceUnavailable()
 		if err := result.readResponse(response, consumer, o.formats); err != nil {
 			return nil, err
 		}
 		return nil, result
-
 	default:
-		return nil, runtime.NewAPIError("unknown error", response, response.Code())
+		return nil, runtime.NewAPIError("response status code does not match any response statuses defined for this endpoint in the swagger spec", response, response.Code())
 	}
 }
 
@@ -49,7 +45,7 @@ func NewHealthzOK() *HealthzOK {
 	return &HealthzOK{}
 }
 
-/*HealthzOK handles this case with default header values.
+/* HealthzOK describes a response with status code 200, with default header values.
 
 Health check report
 */
@@ -60,6 +56,9 @@ type HealthzOK struct {
 func (o *HealthzOK) Error() string {
 	return fmt.Sprintf("[GET /healthz][%d] healthzOK  %+v", 200, o.Payload)
 }
+func (o *HealthzOK) GetPayload() *models.HealthCheckResults {
+	return o.Payload
+}
 
 func (o *HealthzOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
 
@@ -78,7 +77,7 @@ func NewHealthzServiceUnavailable() *HealthzServiceUnavailable {
 	return &HealthzServiceUnavailable{}
 }
 
-/*HealthzServiceUnavailable handles this case with default header values.
+/* HealthzServiceUnavailable describes a response with status code 503, with default header values.
 
 Unhealthy service
 */
@@ -89,6 +88,9 @@ type HealthzServiceUnavailable struct {
 func (o *HealthzServiceUnavailable) Error() string {
 	return fmt.Sprintf("[GET /healthz][%d] healthzServiceUnavailable  %+v", 503, o.Payload)
 }
+func (o *HealthzServiceUnavailable) GetPayload() *models.HealthCheckResults {
+	return o.Payload
+}
 
 func (o *HealthzServiceUnavailable) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
 

pkg/client/operations/operations_client.go

@@ -6,13 +6,14 @@ package operations
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	"github.com/go-openapi/runtime"
+	"fmt"
 
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 )
 
 // New creates a new operations API client.
-func New(transport runtime.ClientTransport, formats strfmt.Registry) *Client {
+func New(transport runtime.ClientTransport, formats strfmt.Registry) ClientService {
 	return &Client{transport: transport, formats: formats}
 }
 
@@ -24,116 +25,212 @@ type Client struct {
 	formats   strfmt.Registry
 }
 
+// ClientOption is the option for Client methods
+type ClientOption func(*runtime.ClientOperation)
+
+// ClientService is the interface for Client methods
+type ClientService interface {
+	CheckAllPods(params *CheckAllPodsParams, opts ...ClientOption) (*CheckAllPodsOK, error)
+
+	CheckServicePods(params *CheckServicePodsParams, opts ...ClientOption) (*CheckServicePodsOK, error)
+
+	ClusterHealth(params *ClusterHealthParams, opts ...ClientOption) (*ClusterHealthOK, error)
+
+	Healthz(params *HealthzParams, opts ...ClientOption) (*HealthzOK, error)
+
+	Ping(params *PingParams, opts ...ClientOption) (*PingOK, error)
+
+	SetTransport(transport runtime.ClientTransport)
+}
+
 /*
-CheckAllPods Queries the API server for all other pods in this service, and makes all of them query all of their neighbours, using their pods IPs. Calls their /check endpoint.
+  CheckAllPods Queries the API server for all other pods in this service, and makes all of them query all of their neighbours, using their pods IPs. Calls their /check endpoint.
 */
-func (a *Client) CheckAllPods(params *CheckAllPodsParams) (*CheckAllPodsOK, error) {
+func (a *Client) CheckAllPods(params *CheckAllPodsParams, opts ...ClientOption) (*CheckAllPodsOK, error) {
 	// TODO: Validate the params before sending
 	if params == nil {
 		params = NewCheckAllPodsParams()
 	}
-
-	result, err := a.transport.Submit(&runtime.ClientOperation{
+	op := &runtime.ClientOperation{
 		ID:                 "checkAllPods",
 		Method:             "GET",
 		PathPattern:        "/check_all",
 		ProducesMediaTypes: []string{"application/json"},
-		ConsumesMediaTypes: []string{""},
+		ConsumesMediaTypes: []string{"application/json"},
 		Schemes:            []string{"http"},
 		Params:             params,
 		Reader:             &CheckAllPodsReader{formats: a.formats},
 		Context:            params.Context,
 		Client:             params.HTTPClient,
-	})
+	}
+	for _, opt := range opts {
+		opt(op)
+	}
+
+	result, err := a.transport.Submit(op)
 	if err != nil {
 		return nil, err
 	}
-	return result.(*CheckAllPodsOK), nil
-
+	success, ok := result.(*CheckAllPodsOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for checkAllPods: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
 }
 
 /*
-CheckServicePods Queries the API server for all other pods in this service, and pings them via their pods IPs. Calls their /ping endpoint
+  CheckServicePods Queries the API server for all other pods in this service, and pings them via their pods IPs. Calls their /ping endpoint
 */
-func (a *Client) CheckServicePods(params *CheckServicePodsParams) (*CheckServicePodsOK, error) {
+func (a *Client) CheckServicePods(params *CheckServicePodsParams, opts ...ClientOption) (*CheckServicePodsOK, error) {
 	// TODO: Validate the params before sending
 	if params == nil {
 		params = NewCheckServicePodsParams()
 	}
-
-	result, err := a.transport.Submit(&runtime.ClientOperation{
+	op := &runtime.ClientOperation{
 		ID:                 "checkServicePods",
 		Method:             "GET",
 		PathPattern:        "/check",
 		ProducesMediaTypes: []string{"application/json"},
-		ConsumesMediaTypes: []string{""},
+		ConsumesMediaTypes: []string{"application/json"},
 		Schemes:            []string{"http"},
 		Params:             params,
 		Reader:             &CheckServicePodsReader{formats: a.formats},
 		Context:            params.Context,
 		Client:             params.HTTPClient,
-	})
+	}
+	for _, opt := range opts {
+		opt(op)
+	}
+
+	result, err := a.transport.Submit(op)
 	if err != nil {
 		return nil, err
 	}
-	return result.(*CheckServicePodsOK), nil
-
+	success, ok := result.(*CheckServicePodsOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for checkServicePods: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
 }
 
 /*
-Healthz The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.
+  ClusterHealth Checks the full graph. Returns a binary OK or not OK.
 */
-func (a *Client) Healthz(params *HealthzParams) (*HealthzOK, error) {
+func (a *Client) ClusterHealth(params *ClusterHealthParams, opts ...ClientOption) (*ClusterHealthOK, error) {
+	// TODO: Validate the params before sending
+	if params == nil {
+		params = NewClusterHealthParams()
+	}
+	op := &runtime.ClientOperation{
+		ID:                 "clusterHealth",
+		Method:             "GET",
+		PathPattern:        "/cluster_health",
+		ProducesMediaTypes: []string{"application/json"},
+		ConsumesMediaTypes: []string{"application/json"},
+		Schemes:            []string{"http"},
+		Params:             params,
+		Reader:             &ClusterHealthReader{formats: a.formats},
+		Context:            params.Context,
+		Client:             params.HTTPClient,
+	}
+	for _, opt := range opts {
+		opt(op)
+	}
+
+	result, err := a.transport.Submit(op)
+	if err != nil {
+		return nil, err
+	}
+	success, ok := result.(*ClusterHealthOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for clusterHealth: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
+}
+
+/*
+  Healthz The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.
+*/
+func (a *Client) Healthz(params *HealthzParams, opts ...ClientOption) (*HealthzOK, error) {
 	// TODO: Validate the params before sending
 	if params == nil {
 		params = NewHealthzParams()
 	}
-
-	result, err := a.transport.Submit(&runtime.ClientOperation{
+	op := &runtime.ClientOperation{
 		ID:                 "healthz",
 		Method:             "GET",
 		PathPattern:        "/healthz",
 		ProducesMediaTypes: []string{"application/json"},
-		ConsumesMediaTypes: []string{""},
+		ConsumesMediaTypes: []string{"application/json"},
 		Schemes:            []string{"http"},
 		Params:             params,
 		Reader:             &HealthzReader{formats: a.formats},
 		Context:            params.Context,
 		Client:             params.HTTPClient,
-	})
+	}
+	for _, opt := range opts {
+		opt(op)
+	}
+
+	result, err := a.transport.Submit(op)
 	if err != nil {
 		return nil, err
 	}
-	return result.(*HealthzOK), nil
-
+	success, ok := result.(*HealthzOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for healthz: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
 }
 
 /*
-Ping return query stats
+  Ping return query stats
 */
-func (a *Client) Ping(params *PingParams) (*PingOK, error) {
+func (a *Client) Ping(params *PingParams, opts ...ClientOption) (*PingOK, error) {
 	// TODO: Validate the params before sending
 	if params == nil {
 		params = NewPingParams()
 	}
-
-	result, err := a.transport.Submit(&runtime.ClientOperation{
+	op := &runtime.ClientOperation{
 		ID:                 "ping",
 		Method:             "GET",
 		PathPattern:        "/ping",
 		ProducesMediaTypes: []string{"application/json"},
-		ConsumesMediaTypes: []string{""},
+		ConsumesMediaTypes: []string{"application/json"},
 		Schemes:            []string{"http"},
 		Params:             params,
 		Reader:             &PingReader{formats: a.formats},
 		Context:            params.Context,
 		Client:             params.HTTPClient,
-	})
+	}
+	for _, opt := range opts {
+		opt(op)
+	}
+
+	result, err := a.transport.Submit(op)
 	if err != nil {
 		return nil, err
 	}
-	return result.(*PingOK), nil
-
+	success, ok := result.(*PingOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for ping: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
 }
 
 // SetTransport changes the transport on the client

pkg/client/operations/ping_parameters.go

@@ -13,51 +13,49 @@ import (
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	cr "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/strfmt"
 )
 
-// NewPingParams creates a new PingParams object
-// with the default values initialized.
+// NewPingParams creates a new PingParams object,
+// with the default timeout for this client.
+//
+// Default values are not hydrated, since defaults are normally applied by the API server side.
+//
+// To enforce default values in parameter, use SetDefaults or WithDefaults.
 func NewPingParams() *PingParams {
-
 	return &PingParams{
-
 		timeout: cr.DefaultTimeout,
 	}
 }
 
 // NewPingParamsWithTimeout creates a new PingParams object
-// with the default values initialized, and the ability to set a timeout on a request
+// with the ability to set a timeout on a request.
 func NewPingParamsWithTimeout(timeout time.Duration) *PingParams {
-
 	return &PingParams{
-
 		timeout: timeout,
 	}
 }
 
 // NewPingParamsWithContext creates a new PingParams object
-// with the default values initialized, and the ability to set a context for a request
+// with the ability to set a context for a request.
 func NewPingParamsWithContext(ctx context.Context) *PingParams {
-
 	return &PingParams{
-
 		Context: ctx,
 	}
 }
 
 // NewPingParamsWithHTTPClient creates a new PingParams object
-// with the default values initialized, and the ability to set a custom HTTPClient for a request
+// with the ability to set a custom HTTPClient for a request.
 func NewPingParamsWithHTTPClient(client *http.Client) *PingParams {
-
 	return &PingParams{
 		HTTPClient: client,
 	}
 }
 
-/*PingParams contains all the parameters to send to the API endpoint
-for the ping operation typically these are written to a http.Request
+/* PingParams contains all the parameters to send to the API endpoint
+   for the ping operation.
+
+   Typically these are written to a http.Request.
 */
 type PingParams struct {
 	timeout    time.Duration
@@ -65,6 +63,21 @@ type PingParams struct {
 	HTTPClient *http.Client
 }
 
+// WithDefaults hydrates default values in the ping params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *PingParams) WithDefaults() *PingParams {
+	o.SetDefaults()
+	return o
+}
+
+// SetDefaults hydrates default values in the ping params (not the query body).
+//
+// All values with no default are reset to their zero value.
+func (o *PingParams) SetDefaults() {
+	// no default values defined for this parameter
+}
+
 // WithTimeout adds the timeout to the ping params
 func (o *PingParams) WithTimeout(timeout time.Duration) *PingParams {
 	o.SetTimeout(timeout)

pkg/client/operations/ping_responses.go

@@ -10,10 +10,9 @@ import (
 	"io"
 
 	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 
-	strfmt "github.com/go-openapi/strfmt"
-
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // PingReader is a Reader for the Ping structure.
@@ -24,16 +23,14 @@ type PingReader struct {
 // ReadResponse reads a server response into the received o.
 func (o *PingReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
 	switch response.Code() {
-
 	case 200:
 		result := NewPingOK()
 		if err := result.readResponse(response, consumer, o.formats); err != nil {
 			return nil, err
 		}
 		return result, nil
-
 	default:
-		return nil, runtime.NewAPIError("unknown error", response, response.Code())
+		return nil, runtime.NewAPIError("response status code does not match any response statuses defined for this endpoint in the swagger spec", response, response.Code())
 	}
 }
 
@@ -42,7 +39,7 @@ func NewPingOK() *PingOK {
 	return &PingOK{}
 }
 
-/*PingOK handles this case with default header values.
+/* PingOK describes a response with status code 200, with default header values.
 
 return success
 */
@@ -53,6 +50,9 @@ type PingOK struct {
 func (o *PingOK) Error() string {
 	return fmt.Sprintf("[GET /ping][%d] pingOK  %+v", 200, o.Payload)
 }
+func (o *PingOK) GetPayload() *models.PingResults {
+	return o.Payload
+}
 
 func (o *PingOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
 

pkg/goldpinger/client.go

@@ -15,34 +15,106 @@
 package goldpinger
 
 import (
+	"context"
 	"errors"
-	"fmt"
 	"net"
+	"sort"
+	"strconv"
 	"sync"
 	"time"
 
-	apiclient "github.com/bloomberg/goldpinger/pkg/client"
-	"github.com/bloomberg/goldpinger/pkg/models"
+	apiclient "github.com/bloomberg/goldpinger/v3/pkg/client"
+	"github.com/bloomberg/goldpinger/v3/pkg/client/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 	httptransport "github.com/go-openapi/runtime/client"
 	"github.com/go-openapi/strfmt"
+	"go.uber.org/zap"
 )
 
 // CheckNeighbours queries the kubernetes API server for all other goldpinger pods
 // then calls Ping() on each one
-func CheckNeighbours(ps *PodSelecter) *models.CheckResults {
-	return PingAllPods(ps.SelectPods())
+func CheckNeighbours(ctx context.Context) *models.CheckResults {
+	// Mux to prevent concurrent map address
+	checkResultsMux.Lock()
+	defer checkResultsMux.Unlock()
+	final := models.CheckResults{}
+	final.PodResults = make(map[string]models.PodResult)
+	for podName, podResult := range checkResults.PodResults {
+		final.PodResults[podName] = podResult
+	}
+	final.ProbeResults = checkTargets()
+	return &final
 }
 
 // CheckNeighboursNeighbours queries the kubernetes API server for all other goldpinger
 // pods then calls Check() on each one
-func CheckNeighboursNeighbours(ps *PodSelecter) *models.CheckAllResults {
-	return CheckAllPods(ps.SelectPods())
+func CheckNeighboursNeighbours(ctx context.Context) *models.CheckAllResults {
+	return CheckAllPods(ctx, SelectPods())
 }
 
+// CheckCluster does a CheckNeighboursNeighbours and analyses results to produce a binary OK or not OK
+func CheckCluster(ctx context.Context) *models.ClusterHealthResults {
+	start := time.Now()
+	output := models.ClusterHealthResults{
+		GeneratedAt: strfmt.DateTime(start),
+		OK:          true,
+	}
+	selectedPods := SelectPods()
+
+	// precompute the expected set of nodes
+	expectedNodes := []string{}
+	for _, peer := range selectedPods {
+		expectedNodes = append(expectedNodes, peer.HostIP)
+	}
+	sort.Strings(expectedNodes)
+
+	// get the response we serve for check_all
+	checkAll := CheckAllPods(ctx, selectedPods)
+
+	// we should at the very least have a response from ourselves
+	if len(checkAll.Responses) < 1 {
+		output.OK = false
+	}
+	for _, resp := range checkAll.Responses {
+		// 1. check that all nodes report OK
+		if *resp.OK {
+			output.NodesHealthy = append(output.NodesHealthy, resp.HostIP.String())
+		} else {
+			output.NodesUnhealthy = append(output.NodesUnhealthy, resp.HostIP.String())
+			output.OK = false
+		}
+		output.NodesTotal++
+		// 2. check that all nodes report the expected peers
+		// on error, there might be no response from the node
+		if resp.Response == nil {
+			output.OK = false
+			continue
+		}
+		// if we get a response, let's check we get the expected nodes
+		observedNodes := []string{}
+		for _, peer := range resp.Response.PodResults {
+			observedNodes = append(observedNodes, string(peer.HostIP))
+		}
+		sort.Strings(observedNodes)
+		if len(observedNodes) != len(expectedNodes) {
+			output.OK = false
+		}
+		for i, val := range observedNodes {
+			if val != expectedNodes[i] {
+				output.OK = false
+				break
+			}
+		}
+	}
+	output.DurationNs = time.Since(start).Nanoseconds()
+	return &output
+}
+
+// PingAllPodsResult holds results from pinging all nodes
 type PingAllPodsResult struct {
+	podName   string
 	podResult models.PodResult
-	hostIPv4  strfmt.IPv4
-	podIP     string
+	deleted   bool
 }
 
 func pickPodHostIP(podIP, hostIP string) string {
@@ -52,144 +124,131 @@ func pickPodHostIP(podIP, hostIP string) string {
 	return podIP
 }
 
-func checkDNS() *models.DNSResults {
-	results := models.DNSResults{}
-	for _, host := range GoldpingerConfig.DnsHosts {
-
-		var dnsResult models.DNSResult
-
-		start := time.Now()
-		_, err := net.LookupIP(host)
-		if err != nil {
-			dnsResult.Error = err.Error()
-			CountDnsError(host)
-		}
-		dnsResult.ResponseTimeMs = time.Since(start).Nanoseconds() / int64(time.Millisecond)
-		results[host] = dnsResult
+func checkTargets() models.ProbeResults {
+	results := make(map[string][]models.ProbeResult)
+	probes := []struct {
+		protocol string
+		hosts    []string
+		probeFn  func(addr string, timeout time.Duration) error
+		statFn   func(host string)
+		timeout  time.Duration
+	}{
+		{
+			protocol: "dns",
+			hosts:    GoldpingerConfig.DnsHosts,
+			probeFn:  doDNSProbe,
+			statFn:   CountDnsError,
+			timeout:  GoldpingerConfig.DnsCheckTimeout,
+		},
+		{
+			protocol: "http",
+			hosts:    GoldpingerConfig.HTTPTargets,
+			probeFn:  doHTTPProbe,
+			statFn:   CountHttpError,
+			timeout:  GoldpingerConfig.HTTPCheckTimeout,
+		},
+		{
+			protocol: "tcp",
+			hosts:    GoldpingerConfig.TCPTargets,
+			probeFn:  doTCPProbe,
+			statFn:   CountTcpError,
+			timeout:  GoldpingerConfig.TCPCheckTimeout,
+		},
 	}
-	return &results
-}
 
-func PingAllPods(pods map[string]string) *models.CheckResults {
-
-	result := models.CheckResults{}
-
-	ch := make(chan PingAllPodsResult, len(pods))
-	wg := sync.WaitGroup{}
-	wg.Add(len(pods))
-
-	for podIP, hostIP := range pods {
-
-		go func(podIP string, hostIP string) {
-
-			// metrics
-			CountCall("made", "ping")
-			timer := GetLabeledPeersCallsTimer("ping", hostIP, podIP)
-			start := time.Now()
-
-			// setup
-			var channelResult PingAllPodsResult
-			channelResult.hostIPv4.UnmarshalText([]byte(hostIP))
-			channelResult.podIP = podIP
-
-			OK := false
-			var responseTime int64
-			client, err := getClient(pickPodHostIP(podIP, hostIP))
-
-			if err != nil {
-				channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Error: err.Error(), StatusCode: 500, ResponseTimeMs: responseTime}
-				channelResult.podIP = hostIP
-				CountError("ping")
-			} else {
-				resp, err := client.Operations.Ping(nil)
-				responseTime = time.Since(start).Nanoseconds() / int64(time.Millisecond)
-				OK = (err == nil)
-				if OK {
-					channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Response: resp.Payload, StatusCode: 200, ResponseTimeMs: responseTime}
-					timer.ObserveDuration()
-				} else {
-					channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Error: err.Error(), StatusCode: 504, ResponseTimeMs: responseTime}
-					CountError("ping")
-				}
+	for _, probe := range probes {
+		for _, host := range probe.hosts {
+			if _, ok := results[host]; !ok {
+				results[host] = []models.ProbeResult{}
 			}
 
-			ch <- channelResult
-			wg.Done()
-		}(podIP, hostIP)
-	}
-	if len(GoldpingerConfig.DnsHosts) > 0 {
-		result.DNSResults = *checkDNS()
-	}
-	wg.Wait()
-	close(ch)
+			res := models.ProbeResult{Protocol: probe.protocol}
+			start := time.Now()
+			err := probe.probeFn(host, probe.timeout)
+			if err != nil {
+				res.Error = err.Error()
+				probe.statFn(host)
+			}
 
-	counterHealthy, counterUnhealthy := 0.0, 0.0
-
-	result.PodResults = make(map[string]models.PodResult)
-	for response := range ch {
-		var podIPv4 strfmt.IPv4
-		podIPv4.UnmarshalText([]byte(response.podIP))
-		if *response.podResult.OK {
-			counterHealthy++
-		} else {
-			counterUnhealthy++
+			res.ResponseTimeMs = time.Since(start).Milliseconds()
+			results[host] = append(results[host], res)
 		}
-		result.PodResults[response.podIP] = response.podResult
 	}
-	CountHealthyUnhealthyNodes(counterHealthy, counterUnhealthy)
-	return &result
+
+	return results
 }
 
+// CheckServicePodsResult results of the /check operation
 type CheckServicePodsResult struct {
+	podName           string
 	checkAllPodResult models.CheckAllPodResult
 	hostIPv4          strfmt.IPv4
-	podIP             string
+	podIPv4           strfmt.IPv4
 }
 
-func CheckAllPods(pods map[string]string) *models.CheckAllResults {
-
+// CheckAllPods calls all neighbours and returns a detailed report
+func CheckAllPods(checkAllCtx context.Context, pods map[string]*GoldpingerPod) *models.CheckAllResults {
 	result := models.CheckAllResults{Responses: make(map[string]models.CheckAllPodResult)}
 
 	ch := make(chan CheckServicePodsResult, len(pods))
 	wg := sync.WaitGroup{}
 	wg.Add(len(pods))
 
-	for podIP, hostIP := range pods {
-
-		go func(podIP string, hostIP string) {
+	for _, pod := range pods {
+		go func(pod *GoldpingerPod) {
+			// logger
+			logger := zap.L().With(
+				zap.String("op", "check"),
+				zap.String("name", pod.Name),
+				zap.String("hostIP", pod.HostIP),
+				zap.String("podIP", pod.PodIP),
+			)
 
 			// stats
 			CountCall("made", "check")
-			timer := GetLabeledPeersCallsTimer("check", hostIP, podIP)
+			timer := GetLabeledPeersCallsTimer("check", pod.HostIP, pod.PodIP)
 
 			// setup
 			var channelResult CheckServicePodsResult
-			channelResult.hostIPv4.UnmarshalText([]byte(hostIP))
-			channelResult.podIP = podIP
-			client, err := getClient(pickPodHostIP(podIP, hostIP))
+			channelResult.podName = pod.Name
+			channelResult.hostIPv4.UnmarshalText([]byte(pod.HostIP))
+			channelResult.podIPv4.UnmarshalText([]byte(pod.PodIP))
+			client, err := getClient(pickPodHostIP(pod.PodIP, pod.HostIP))
 			OK := false
 
 			if err != nil {
+				logger.Warn("Couldn't get a client for Check", zap.Error(err))
 				channelResult.checkAllPodResult = models.CheckAllPodResult{
 					OK:     &OK,
+					PodIP:  channelResult.podIPv4,
 					HostIP: channelResult.hostIPv4,
 					Error:  err.Error(),
 				}
-				channelResult.podIP = hostIP
 				CountError("checkAll")
 			} else {
-				resp, err := client.Operations.CheckServicePods(nil)
+				checkCtx, cancel := context.WithTimeout(
+					checkAllCtx,
+					GoldpingerConfig.CheckTimeout,
+				)
+				defer cancel()
+
+				params := operations.NewCheckServicePodsParamsWithContext(checkCtx)
+				resp, err := client.Operations.CheckServicePods(params)
 				OK = (err == nil)
 				if OK {
+					logger.Debug("Check Ok")
 					channelResult.checkAllPodResult = models.CheckAllPodResult{
 						OK:       &OK,
+						PodIP:    channelResult.podIPv4,
 						HostIP:   channelResult.hostIPv4,
 						Response: resp.Payload,
 					}
 					timer.ObserveDuration()
 				} else {
+					logger.Warn("Check returned error", zap.Error(err))
 					channelResult.checkAllPodResult = models.CheckAllPodResult{
 						OK:     &OK,
+						PodIP:  channelResult.podIPv4,
 						HostIP: channelResult.hostIPv4,
 						Error:  err.Error(),
 					}
@@ -199,36 +258,35 @@ func CheckAllPods(pods map[string]string) *models.CheckAllResults {
 
 			ch <- channelResult
 			wg.Done()
-		}(podIP, hostIP)
+		}(pod)
 	}
 	wg.Wait()
 	close(ch)
 
 	for response := range ch {
-		var podIPv4 strfmt.IPv4
-		podIPv4.UnmarshalText([]byte(response.podIP))
-
-		result.Responses[response.podIP] = response.checkAllPodResult
+		result.Responses[response.podName] = response.checkAllPodResult
 		result.Hosts = append(result.Hosts, &models.CheckAllResultsHostsItems0{
-			HostIP: response.hostIPv4,
-			PodIP:  podIPv4,
+			PodName: response.podName,
+			HostIP:  response.hostIPv4,
+			PodIP:   response.podIPv4,
 		})
 		if response.checkAllPodResult.Response != nil &&
-			response.checkAllPodResult.Response.DNSResults != nil {
-			if result.DNSResults == nil {
-				result.DNSResults = make(map[string]models.DNSResults)
+			response.checkAllPodResult.Response.ProbeResults != nil {
+			if result.ProbeResults == nil {
+				result.ProbeResults = make(map[string]models.ProbeResults)
 			}
-			for host := range response.checkAllPodResult.Response.DNSResults {
-				if result.DNSResults[host] == nil {
-					result.DNSResults[host] = make(map[string]models.DNSResult)
+			for host := range response.checkAllPodResult.Response.ProbeResults {
+				if result.ProbeResults[host] == nil {
+					result.ProbeResults[host] = make(map[string][]models.ProbeResult)
 				}
-				result.DNSResults[host][response.podIP] = response.checkAllPodResult.Response.DNSResults[host]
+				result.ProbeResults[host][response.podName] = response.checkAllPodResult.Response.ProbeResults[host]
 			}
 		}
 	}
 	return &result
 }
 
+// HealthCheck returns a simple 200 OK response to verify the API is up
 func HealthCheck() *models.HealthCheckResults {
 	ok := true
 	start := time.Now()
@@ -244,7 +302,7 @@ func getClient(hostIP string) (*apiclient.Goldpinger, error) {
 	if hostIP == "" {
 		return nil, errors.New("Host or pod IP empty, can't make a call")
 	}
-	host := fmt.Sprintf("%s:%d", hostIP, GoldpingerConfig.Port)
+	host := net.JoinHostPort(hostIP, strconv.Itoa(GoldpingerConfig.Port))
 	transport := httptransport.New(host, "", nil)
 	client := apiclient.New(transport, strfmt.Default)
 	apiclient.Default.SetTransport(transport)

pkg/goldpinger/config.go

@@ -15,22 +15,43 @@
 package goldpinger
 
 import (
+	"time"
+
 	"k8s.io/client-go/kubernetes"
 )
 
 // GoldpingerConfig represents the configuration for goldpinger
 var GoldpingerConfig = struct {
-	StaticFilePath   string `long:"static-file-path" description:"Folder for serving static files" env:"STATIC_FILE_PATH"`
-	KubeConfigPath   string `long:"kubeconfig" description:"Path to kubeconfig file" env:"KUBECONFIG"`
-	RefreshInterval  int    `long:"refresh-interval" description:"If > 0, will create a thread and collect stats every n seconds" env:"REFRESH_INTERVAL" default:"30"`
-	Hostname         string `long:"hostname" description:"Hostname to use" env:"HOSTNAME"`
-	PodIP            string `long:"pod-ip" description:"Pod IP to use" env:"POD_IP"`
-	PingNumber       uint   `long:"ping-number" description:"Number of peers to ping. A value of 0 indicates all peers should be pinged." default:"0" env:"PING_NUMBER"`
-	Port             int    `long:"client-port-override" description:"(for testing) use this port when calling other instances" env:"CLIENT_PORT_OVERRIDE"`
-	UseHostIP        bool   `long:"use-host-ip" description:"When making the calls, use host ip (defaults to pod ip)" env:"USE_HOST_IP"`
-	LabelSelector    string `long:"label-selector" description:"label selector to use to discover goldpinger pods in the cluster" env:"LABEL_SELECTOR" default:"app=goldpinger"`
+	StaticFilePath   string  `long:"static-file-path" description:"Folder for serving static files" env:"STATIC_FILE_PATH"`
+	ZapConfigPath    string  `long:"zap-config" description:"Path to zap config file" env:"ZAP_CONFIG" default:"/config/zap.json"`
+	KubeConfigPath   string  `long:"kubeconfig" description:"Path to kubeconfig file" env:"KUBECONFIG"`
+	RefreshInterval  int     `long:"refresh-interval" description:"If > 0, will create a thread and collect stats every n seconds" env:"REFRESH_INTERVAL" default:"30"`
+	JitterFactor     float64 `long:"jitter-factor" description:"The amount of jitter to add while pinging clients" env:"JITTER_FACTOR" default:"0.05"`
+	Hostname         string  `long:"hostname" description:"Hostname to use" env:"HOSTNAME"`
+	PodIP            string  `long:"pod-ip" description:"Pod IP to use" env:"POD_IP"`
+	PodName          string  `long:"pod-name" description:"The name of this pod - used to select --ping-number of pods using rendezvous hashing" env:"POD_NAME"`
+	PingNumber       uint    `long:"ping-number" description:"Number of peers to ping. A value of 0 indicates all peers should be pinged." default:"0" env:"PING_NUMBER"`
+	Port             int     `long:"client-port-override" description:"(for testing) use this port when calling other instances" env:"CLIENT_PORT_OVERRIDE"`
+	UseHostIP        bool    `long:"use-host-ip" description:"When making the calls, use host ip (defaults to pod ip)" env:"USE_HOST_IP"`
+	LabelSelector    string  `long:"label-selector" description:"label selector to use to discover goldpinger pods in the cluster" env:"LABEL_SELECTOR" default:"app=goldpinger"`
+	Namespace        *string `long:"namespace" description:"namespace to use to discover goldpinger pods in the cluster (empty for all). Defaults to discovering the namespace for the current pod" env:"NAMESPACE"`
+	DisplayNodeName  bool    `long:"display-nodename" description:"Display nodename other than podname in UI (defaults is podname)." env:"DISPLAY_NODENAME"`
 	KubernetesClient *kubernetes.Clientset
-	*PodSelecter
 
-	DnsHosts         []string `long:"host-to-resolve" description:"A host to attempt dns resolve on (space delimited)" env:"HOSTS_TO_RESOLVE" env-delim:" "`
+	DnsHosts    []string `long:"host-to-resolve" description:"A host to attempt dns resolve on (space delimited)" env:"HOSTS_TO_RESOLVE" env-delim:" "`
+	TCPTargets  []string `long:"tcp-targets" description:"A list of external targets(<host>:<port> or <ip>:<port>) to attempt a TCP check on (space delimited)" env:"TCP_TARGETS" env-delim:" "`
+	HTTPTargets []string `long:"http-targets" description:"A list of external targets(<http or https>://<url>) to attempt an HTTP{S} check on. A 200 HTTP code is considered successful.(space delimited)" env:"HTTP_TARGETS" env-delim:" "`
+
+	IPVersions []string `long:"ip-versions" description:"The IP versions to use (space delimited). Possible values are 4 and 6 (defaults to 4)." env:"IP_VERSIONS" env-delim:" "`
+
+	// Timeouts
+	PingTimeoutMs     int64         `long:"ping-timeout-ms" description:"The timeout in milliseconds for a ping call to other goldpinger pods(deprecated)" env:"PING_TIMEOUT_MS" default:"300"`
+	CheckTimeoutMs    int64         `long:"check-timeout-ms" description:"The timeout in milliseconds for a check call to other goldpinger pods(deprecated)" env:"CHECK_TIMEOUT_MS" default:"1000"`
+	CheckAllTimeoutMs int64         `long:"check-all-timeout-ms" description:"The timeout in milliseconds for a check-all call to other goldpinger pods(deprecated)" env:"CHECK_ALL_TIMEOUT_MS" default:"5000"`
+	PingTimeout       time.Duration `long:"ping-timeout" description:"The timeout for a ping call to other goldpinger pods" env:"PING_TIMEOUT" default:"300ms"`
+	CheckTimeout      time.Duration `long:"check-timeout" description:"The timeout for a check call to other goldpinger pods" env:"CHECK_TIMEOUT" default:"1000ms"`
+	CheckAllTimeout   time.Duration `long:"check-all-timeout" description:"The timeout for a check-all call to other goldpinger pods" env:"CHECK_ALL_TIMEOUT" default:"5000ms"`
+	TCPCheckTimeout   time.Duration `long:"tcp-targets-timeout" description:"The timeout for a tcp check on the provided tcp-targets" env:"TCP_TARGETS_TIMEOUT" default:"500ms"`
+	DnsCheckTimeout   time.Duration `long:"dns-targets-timeout" description:"The timeout for a dns check on the provided dns-targets" env:"DNS_TARGETS_TIMEOUT" default:"500ms"`
+	HTTPCheckTimeout  time.Duration `long:"http-targets-timeout" description:"The timeout for a http check on the provided http-targets" env:"HTTP_TARGETS_TIMEOUT" default:"500ms"`
 }{}

pkg/goldpinger/heatmap.go

@@ -18,15 +18,16 @@ package goldpinger
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"image"
 	"image/color"
 	"image/png"
-	"log"
 	"net/http"
 	"sort"
 	"strconv"
 
+	"go.uber.org/zap"
 	"golang.org/x/image/font"
 	"golang.org/x/image/font/basicfont"
 	"golang.org/x/image/math/fixed"
@@ -79,8 +80,14 @@ func HeatmapHandler(w http.ResponseWriter, r *http.Request) {
 	// parse the query to set the parameters
 	query := r.URL.Query()
 
+	ctx, cancel := context.WithTimeout(
+		r.Context(),
+		GoldpingerConfig.CheckAllTimeout,
+	)
+	defer cancel()
+
 	// get the results
-	checkResults := CheckAllPods(GetAllPods())
+	checkResults := CheckAllPods(ctx, GetAllPods())
 
 	// set some sizes
 	numberOfPods := len(checkResults.Responses)
@@ -135,12 +142,12 @@ func HeatmapHandler(w http.ResponseWriter, r *http.Request) {
 
 	buffer := new(bytes.Buffer)
 	if err := png.Encode(buffer, canvas); err != nil {
-		log.Println("error encoding png", err)
+		zap.L().Error("error encoding png", zap.Error(err))
 	}
 
 	w.Header().Set("Content-Type", "image/png")
 	w.Header().Set("Content-Length", strconv.Itoa(len(buffer.Bytes())))
 	if _, err := w.Write(buffer.Bytes()); err != nil {
-		log.Println("error writing heatmap buffer out", err)
+		zap.L().Error("error writing heatmap buffer out", zap.Error(err))
 	}
 }

pkg/goldpinger/k8s.go

@@ -15,35 +15,138 @@
 package goldpinger
 
 import (
-	"log"
+	"context"
 	"io/ioutil"
+
+	"go.uber.org/zap"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	k8snet "k8s.io/utils/net"
 )
 
-func getNamespace() string {
+var nodeIPMap = make(map[string]string)
+
+// PodNamespace is the auto-detected namespace for this goldpinger pod
+var PodNamespace = getPodNamespace()
+
+// GoldpingerPod contains just the basic info needed to ping and keep track of a given goldpinger pod
+type GoldpingerPod struct {
+	Name   string // Name is the name of the pod
+	PodIP  string // PodIP is the IP address of the pod
+	HostIP string // HostIP is the IP address of the host where the pod lives
+}
+
+func getPodNamespace() string {
 	b, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
 	if err != nil {
-		log.Println("Unable to determine namespace: ", err.Error())
+		zap.L().Warn("Unable to determine namespace", zap.Error(err))
 		return ""
 	}
 	namespace := string(b)
 	return namespace
 }
 
-// GetAllPods returns a map of Pod IP to Host IP based on a label selector defined in config
-func GetAllPods() map[string]string {
+// getHostIP gets the IP of the host where the pod is scheduled. If UseIPv6 is enabled then we need to check
+// the node IPs since HostIP will only list the default IP version one.
+func getHostIP(p v1.Pod) string {
+	if ipMatchesConfig(p.Status.HostIP) {
+		return p.Status.HostIP
+	}
+
+	if addr, ok := nodeIPMap[p.Spec.NodeName]; ok {
+		return addr
+	}
+
 	timer := GetLabeledKubernetesCallsTimer()
-	pods, err := GoldpingerConfig.KubernetesClient.CoreV1().Pods(getNamespace()).List(metav1.ListOptions{LabelSelector: GoldpingerConfig.LabelSelector})
+	node, err := GoldpingerConfig.KubernetesClient.CoreV1().Nodes().Get(context.TODO(), p.Spec.NodeName, metav1.GetOptions{})
 	if err != nil {
-		log.Println("Error getting pods for selector: ", err.Error())
+		zap.L().Error("error getting node", zap.Error(err))
+		CountError("kubernetes_api")
+		return p.Status.HostIP
+	} else {
+		timer.ObserveDuration()
+	}
+
+	var hostIP string
+	for _, addr := range node.Status.Addresses {
+		if (addr.Type == v1.NodeInternalIP || addr.Type == v1.NodeExternalIP) &&
+			ipMatchesConfig(addr.Address) {
+			hostIP = addr.Address
+		}
+	}
+	nodeIPMap[p.Spec.NodeName] = hostIP
+	return hostIP
+}
+
+// getPodIP will get an IPv6 IP from PodIPs if the UseIPv6 config is set, otherwise just return the object PodIP
+func getPodIP(p v1.Pod) string {
+	if ipMatchesConfig(p.Status.PodIP) {
+		return p.Status.PodIP
+	}
+
+	var podIP string
+	if p.Status.PodIPs != nil {
+		for _, ip := range p.Status.PodIPs {
+			if ipMatchesConfig(ip.IP) {
+				podIP = ip.IP
+			}
+		}
+	}
+	return podIP
+}
+
+func getPodNodeName(p v1.Pod) string {
+	if GoldpingerConfig.DisplayNodeName {
+		return p.Spec.NodeName
+	}
+
+	return p.Name
+}
+
+// GetAllPods returns a mapping from a pod name to a pointer to a GoldpingerPod(s)
+func GetAllPods() map[string]*GoldpingerPod {
+	timer := GetLabeledKubernetesCallsTimer()
+	listOpts := metav1.ListOptions{
+		ResourceVersion: "0",
+
+		LabelSelector: GoldpingerConfig.LabelSelector,
+		FieldSelector: "status.phase=Running", // only select Running pods, otherwise we will get them before they have IPs
+	}
+	pods, err := GoldpingerConfig.KubernetesClient.CoreV1().Pods(*GoldpingerConfig.Namespace).List(context.TODO(), listOpts)
+	if err != nil {
+		zap.L().Error("Error getting pods for selector", zap.String("selector", GoldpingerConfig.LabelSelector), zap.Error(err))
 		CountError("kubernetes_api")
 	} else {
 		timer.ObserveDuration()
 	}
 
-	var podsreturn = make(map[string]string)
+	podMap := make(map[string]*GoldpingerPod)
 	for _, pod := range pods.Items {
-		podsreturn[pod.Status.PodIP] = pod.Status.HostIP
+		podMap[pod.Name] = &GoldpingerPod{
+			Name:   getPodNodeName(pod),
+			PodIP:  getPodIP(pod),
+			HostIP: getHostIP(pod),
+		}
 	}
-	return podsreturn
+	return podMap
+}
+
+// ipMatchesConfig checks if the input IP family matches the first entry in the IPVersions config.
+// TODO update to check all config versions to support dual-stack pinging.
+func ipMatchesConfig(ip string) bool {
+	ipFamily := getIPFamily(ip)
+	return GoldpingerConfig.IPVersions[0] == string(ipFamily)
+}
+
+// getIPFamily returns the IP family of the input IP.
+// Possible values are 4 and 6.
+func getIPFamily(ip string) k8snet.IPFamily {
+	if k8snet.IsIPv4String(ip) {
+		return k8snet.IPv4
+	}
+	if k8snet.IsIPv6String(ip) {
+		return k8snet.IPv6
+	}
+	zap.L().Error("Error determining IP family", zap.String("IP", ip))
+	return ""
 }

pkg/goldpinger/pinger.go

@@ -0,0 +1,176 @@
+// Copyright 2018 Bloomberg Finance L.P.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package goldpinger
+
+import (
+	"context"
+	"time"
+
+	"go.uber.org/zap"
+
+	apiclient "github.com/bloomberg/goldpinger/v3/pkg/client"
+	"github.com/bloomberg/goldpinger/v3/pkg/client/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
+	"github.com/go-openapi/strfmt"
+	"github.com/prometheus/client_golang/prometheus"
+	"k8s.io/apimachinery/pkg/util/wait"
+)
+
+// Pinger contains all the info needed by a goroutine to continuously ping a pod
+type Pinger struct {
+	pod         *GoldpingerPod
+	client      *apiclient.Goldpinger
+	timeout     time.Duration
+	histogram   prometheus.Observer
+	hostIPv4    strfmt.IPv4
+	podIPv4     strfmt.IPv4
+	resultsChan chan<- PingAllPodsResult
+	stopChan    chan struct{}
+	logger      *zap.Logger
+}
+
+// NewPinger constructs and returns a Pinger object responsible for pinging a single
+// goldpinger pod
+func NewPinger(pod *GoldpingerPod, resultsChan chan<- PingAllPodsResult) *Pinger {
+	p := Pinger{
+		pod:         pod,
+		timeout:     GoldpingerConfig.PingTimeout,
+		resultsChan: resultsChan,
+		stopChan:    make(chan struct{}),
+
+		histogram: goldpingerResponseTimePeersHistogram.WithLabelValues(
+			GoldpingerConfig.Hostname,
+			"ping",
+			pod.HostIP,
+			pod.PodIP,
+		),
+
+		logger: zap.L().With(
+			zap.String("op", "pinger"),
+			zap.String("name", pod.Name),
+			zap.String("hostIP", pod.HostIP),
+			zap.String("podIP", pod.PodIP),
+		),
+	}
+
+	// Initialize the host/pod IPv4
+	p.hostIPv4.UnmarshalText([]byte(pod.HostIP))
+	p.podIPv4.UnmarshalText([]byte(pod.PodIP))
+
+	return &p
+}
+
+// getClient returns a client that can be used to ping the given pod
+// On error, it returns a static result
+func (p *Pinger) getClient() (*apiclient.Goldpinger, error) {
+	if p.client != nil {
+		return p.client, nil
+	}
+
+	client, err := getClient(pickPodHostIP(p.pod.PodIP, p.pod.HostIP))
+	if err != nil {
+		p.logger.Warn("Could not get client", zap.Error(err))
+		OK := false
+		p.resultsChan <- PingAllPodsResult{
+			podName: p.pod.Name,
+			podResult: models.PodResult{
+				PingTime:       strfmt.DateTime(time.Now()),
+				PodIP:          p.podIPv4,
+				HostIP:         p.hostIPv4,
+				OK:             &OK,
+				Error:          err.Error(),
+				StatusCode:     500,
+				ResponseTimeMs: 0,
+			},
+		}
+		return nil, err
+	}
+	p.client = client
+	return p.client, nil
+}
+
+// Ping makes a single ping request to the given pod
+func (p *Pinger) Ping() {
+	client, err := p.getClient()
+	if err != nil {
+		return
+	}
+
+	CountCall("made", "ping")
+	start := time.Now()
+
+	ctx, cancel := context.WithTimeout(context.Background(), p.timeout)
+	defer cancel()
+
+	params := operations.NewPingParamsWithContext(ctx)
+	resp, err := client.Operations.Ping(params)
+	responseTime := time.Since(start)
+	responseTimeMs := responseTime.Nanoseconds() / int64(time.Millisecond)
+	p.histogram.Observe(responseTime.Seconds())
+
+	OK := (err == nil)
+	if OK {
+		p.resultsChan <- PingAllPodsResult{
+			podName: p.pod.Name,
+			podResult: models.PodResult{
+				PingTime:       strfmt.DateTime(start),
+				PodIP:          p.podIPv4,
+				HostIP:         p.hostIPv4,
+				OK:             &OK,
+				Response:       resp.Payload,
+				StatusCode:     200,
+				ResponseTimeMs: responseTimeMs,
+			},
+		}
+		p.logger.Debug("Success pinging pod", zap.Duration("responseTime", responseTime))
+	} else {
+		p.resultsChan <- PingAllPodsResult{
+			podName: p.pod.Name,
+			podResult: models.PodResult{
+				PingTime:       strfmt.DateTime(start),
+				PodIP:          p.podIPv4,
+				HostIP:         p.hostIPv4,
+				OK:             &OK,
+				Error:          err.Error(),
+				StatusCode:     504,
+				ResponseTimeMs: responseTimeMs,
+			},
+		}
+		p.logger.Warn("Ping returned error", zap.Duration("responseTime", responseTime), zap.Error(err))
+		CountError("ping")
+	}
+}
+
+// PingContinuously continuously pings the given pod with a delay between
+// `period` and `period + jitterFactor * period`
+func (p *Pinger) PingContinuously(initialWait time.Duration, period time.Duration, jitterFactor float64) {
+	p.logger.Info(
+		"Starting pinger",
+		zap.Duration("period", period),
+		zap.Duration("initialWait", initialWait),
+		zap.Float64("jitterFactor", jitterFactor),
+	)
+
+	timer := time.NewTimer(initialWait)
+
+	select {
+	case <-timer.C:
+		wait.JitterUntil(p.Ping, period, jitterFactor, false, p.stopChan)
+	case <-p.stopChan:
+		// Do nothing
+	}
+	// We are done, send a message on the results channel to delete this
+	p.resultsChan <- PingAllPodsResult{podName: p.pod.Name, deleted: true}
+}

pkg/goldpinger/pod_selecter.go

@@ -19,43 +19,22 @@ import (
 	rendezvous "github.com/stuartnelson3/go-rendezvous"
 )
 
-// PodSelecter selects the result of getPods() down to count instances
-// according to a rendezvous hash.
-type PodSelecter struct {
-	count   uint
-	podIP   string
-	getPods func() map[string]string
-}
-
-// NewPodSelecter creates a new PodSelecter struct.
-func NewPodSelecter(count uint, podIP string, getPods func() map[string]string) *PodSelecter {
-	if podIP == "" {
-		// If podIP is blank, then we can't use the rendezvous hash to
-		// assign the IP correctly. Setting count=0 will force all pods
-		// to be pinged.
-		count = 0
-	}
-	return &PodSelecter{
-		count:   count,
-		podIP:   podIP,
-		getPods: getPods,
-	}
-}
-
-// SelectPods returns a map of pods filtered according to its configuration.
-func (p *PodSelecter) SelectPods() map[string]string {
-	allPods := p.getPods()
-	if p.count == 0 || p.count >= uint(len(allPods)) {
+// SelectPods selects a set of pods from the results of GetAllPods
+// depending on the count according to a rendezvous hash
+func SelectPods() map[string]*GoldpingerPod {
+	allPods := GetAllPods()
+	if GoldpingerConfig.PingNumber <= 0 || int(GoldpingerConfig.PingNumber) >= len(allPods) {
 		return allPods
 	}
+
 	rzv := rendezvous.New([]string{}, rendezvous.Hasher(xxhash.Sum64String))
-	for podIP := range allPods {
-		rzv.Add(podIP)
+	for podName := range allPods {
+		rzv.Add(podName)
 	}
-	matches := rzv.LookupN(p.podIP, p.count)
-	toPing := make(map[string]string)
-	for _, podIP := range matches {
-		toPing[podIP] = allPods[podIP]
+	matches := rzv.LookupN(GoldpingerConfig.PodName, GoldpingerConfig.PingNumber)
+	toPing := make(map[string]*GoldpingerPod)
+	for _, podName := range matches {
+		toPing[podName] = allPods[podName]
 	}
 	return toPing
 }

pkg/goldpinger/probes.go

@@ -0,0 +1,72 @@
+// Copyright 2018 Bloomberg Finance L.P.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package goldpinger
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+func doDNSProbe(addr string, timeout time.Duration) error {
+	resolver := net.Resolver{}
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	ips, err := resolver.LookupHost(ctx, addr)
+	if len(ips) == 0 {
+		return fmt.Errorf("%s was resolved to 0 ips", addr)
+	}
+	return err
+}
+
+func doTCPProbe(addr string, timeout time.Duration) error {
+	conn, err := net.DialTimeout("tcp", addr, timeout)
+	if conn != nil {
+		defer conn.Close()
+	}
+	return err
+}
+
+func doHTTPProbe(addr string, timeout time.Duration) error {
+	client := http.Client{Timeout: timeout}
+	u, err := url.Parse(addr)
+	if err != nil {
+		return err
+	}
+	if u.Scheme != "http" && u.Scheme != "https" {
+		return fmt.Errorf("invalid url scheme: '%s' in address", u.Scheme)
+	}
+	if u.Scheme == "https" {
+		client.Transport = &http.Transport{
+			TLSClientConfig: &tls.Config{
+				InsecureSkipVerify: true,
+			},
+		}
+	}
+	resp, err := client.Get(addr)
+	if err != nil {
+		return err
+	}
+
+	defer resp.Body.Close()
+	if resp.StatusCode != 200 {
+		return fmt.Errorf("%s returned non-200 resp: %d", addr, resp.StatusCode)
+	}
+	return err
+}

pkg/goldpinger/stats.go

@@ -15,12 +15,13 @@
 package goldpinger
 
 import (
-	"log"
+	"context"
 	"time"
 
-	"github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 	"github.com/go-openapi/strfmt"
 	"github.com/prometheus/client_golang/prometheus"
+	"go.uber.org/zap"
 )
 
 var (
@@ -47,6 +48,16 @@ var (
 		},
 	)
 
+	goldpingerClusterHealthGauge = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "goldpinger_cluster_health_total",
+			Help: "1 if all check pass, 0 otherwise",
+		},
+		[]string{
+			"goldpinger_instance",
+		},
+	)
+
 	goldpingerResponseTimePeersHistogram = prometheus.NewHistogramVec(
 		prometheus.HistogramOpts{
 			Name:    "goldpinger_peers_response_time_s",
@@ -92,21 +103,43 @@ var (
 			"host",
 		},
 	)
-
+	goldPingerTcpErrorsCounter = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "goldpinger_tcp_errors_total",
+			Help: "Statistics of TCP probe errors per instance",
+		},
+		[]string{
+			"goldpinger_instance",
+			"host",
+		},
+	)
+	goldPingerHttpErrorsCounter = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "goldpinger_http_errors_total",
+			Help: "Statistics of HTTP probe errors per instance",
+		},
+		[]string{
+			"goldpinger_instance",
+			"host",
+		},
+	)
 	bootTime = time.Now()
 )
 
 func init() {
 	prometheus.MustRegister(goldpingerStatsCounter)
 	prometheus.MustRegister(goldpingerNodesHealthGauge)
+	prometheus.MustRegister(goldpingerClusterHealthGauge)
 	prometheus.MustRegister(goldpingerResponseTimePeersHistogram)
 	prometheus.MustRegister(goldpingerResponseTimeKubernetesHistogram)
 	prometheus.MustRegister(goldpingerErrorsCounter)
 	prometheus.MustRegister(goldpingerDnsErrorsCounter)
-	log.Println("Metrics setup - see /metrics")
+	prometheus.MustRegister(goldPingerHttpErrorsCounter)
+	prometheus.MustRegister(goldPingerTcpErrorsCounter)
+	zap.L().Info("Metrics setup - see /metrics")
 }
 
-func GetStats() *models.PingResults {
+func GetStats(ctx context.Context) *models.PingResults {
 	// GetStats no longer populates the received and made calls - use metrics for that instead
 	return &models.PingResults{
 		BootTime: strfmt.DateTime(bootTime),
@@ -134,6 +167,17 @@ func CountHealthyUnhealthyNodes(healthy, unhealthy float64) {
 	).Set(unhealthy)
 }
 
+// SetClusterHealth sets the cluster health gauge to 1 (healthy) or 0 (unhealthy)
+func SetClusterHealth(healthy bool) {
+	value := 1.0
+	if !healthy {
+		value = 0
+	}
+	goldpingerClusterHealthGauge.WithLabelValues(
+		GoldpingerConfig.Hostname,
+	).Set(value)
+}
+
 // counts instances of various errors
 func CountError(errorType string) {
 	goldpingerErrorsCounter.WithLabelValues(
@@ -150,6 +194,22 @@ func CountDnsError(host string) {
 	).Inc()
 }
 
+// CountTcpError counts instances of tcp errors for prober
+func CountTcpError(host string) {
+	goldPingerTcpErrorsCounter.WithLabelValues(
+		GoldpingerConfig.Hostname,
+		host,
+	).Inc()
+}
+
+// CountHttpError counts instances of tcp errors for prober
+func CountHttpError(host string) {
+	goldPingerHttpErrorsCounter.WithLabelValues(
+		GoldpingerConfig.Hostname,
+		host,
+	).Inc()
+}
+
 // returns a timer for easy observing of the durations of calls to kubernetes API
 func GetLabeledKubernetesCallsTimer() *prometheus.Timer {
 	return prometheus.NewTimer(

pkg/goldpinger/updater.go

@@ -15,31 +15,195 @@
 package goldpinger
 
 import (
-	"fmt"
-	"log"
+	"sync"
 	"time"
+
+	"go.uber.org/zap"
+
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
+// checkResults holds the latest results of checking the pods
+var checkResults = models.CheckResults{PodResults: make(map[string]models.PodResult)}
+
+// checkResultsMux controls concurrent access to checkResults
+var checkResultsMux = sync.Mutex{}
+
+// exists checks whether there is an existing pinger for the given pod
+// returns true if:
+// - there is already a pinger with the same name
+// - the pinger has the same podIP
+// - the pinger has the same hostIP
+func exists(existingPods map[string]*GoldpingerPod, podName string, new *GoldpingerPod) bool {
+	old, exists := existingPods[podName]
+	return exists && (old.PodIP == new.PodIP) && (old.HostIP == new.HostIP)
+}
+
+// updatePingers calls SelectPods() at regular intervals to get a new list of goldpinger pods to ping
+// For each goldpinger pod, it then creates a pinger responsible for pinging it and returning the
+// results on the result channel
+func updatePingers(resultsChan chan<- PingAllPodsResult) {
+	// Important: This is the only goroutine that should have access to
+	// these maps since there is nothing controlling concurrent access
+	pingers := make(map[string]*Pinger)
+	existingPods := make(map[string]*GoldpingerPod)
+	refreshPeriod := time.Duration(GoldpingerConfig.RefreshInterval) * time.Second
+
+	for {
+		// Initialize deletedPods to all existing pods, we will remove
+		// any pods that should still exist from this list after we are done
+		// NOTE: This is *NOT* a copy of existingPods just a new variable name
+		// to make the intention/code clear and cleaner
+		deletedPods := existingPods
+
+		// New pods are brand new and haven't been seen before
+		newPods := make(map[string]*GoldpingerPod)
+
+		latest := SelectPods()
+		for podName, pod := range latest {
+			if exists(existingPods, podName, pod) {
+				// This pod continues to exist in the latest iteration of the update
+				// without any changes
+				// Delete it from the set of pods that we wish to delete
+				delete(deletedPods, podName)
+			} else {
+				// This pod is brand new and has never been seen before
+				// Add it to the list of newPods
+				newPods[podName] = pod
+			}
+		}
+
+		// deletedPods now contains any pods that have either been deleted from the api-server
+		// *OR* weren't selected by our rendezvous hash
+		// *OR* had their host/pod IP changed. Remove those pingers
+		destroyPingers(pingers, deletedPods)
+
+		// Next create pingers for new pods
+		createPingers(pingers, newPods, resultsChan, refreshPeriod)
+
+		// Finally, just set existingPods to the latest and collect garbage
+		existingPods = latest
+		deletedPods = nil
+		newPods = nil
+
+		// Wait the given time before pinging
+		time.Sleep(refreshPeriod)
+	}
+}
+
+// createPingers allocates a new pinger object for each new goldpinger Pod that's been discovered
+// It also:
+//     (a) initializes a result object in checkResults to store info on that pod
+//     (b) starts a new goroutines to continuously ping the given pod.
+//         Each new goroutine waits for a given time before starting the continuous ping
+//         to prevent a thundering herd
+func createPingers(pingers map[string]*Pinger, newPods map[string]*GoldpingerPod, resultsChan chan<- PingAllPodsResult, refreshPeriod time.Duration) {
+	if len(newPods) == 0 {
+		// I have nothing to do
+		return
+	}
+	waitBetweenPods := refreshPeriod / time.Duration(len(newPods))
+
+	zap.L().Info(
+		"Starting pingers for new pods",
+		zap.Int("numNewPods", len(newPods)),
+		zap.Duration("refreshPeriod", refreshPeriod),
+		zap.Duration("waitPeriod", waitBetweenPods),
+		zap.Float64("JitterFactor", GoldpingerConfig.JitterFactor),
+	)
+
+	initialWait := time.Duration(0)
+	for podName, pod := range newPods {
+		pinger := NewPinger(pod, resultsChan)
+		pingers[podName] = pinger
+		go pinger.PingContinuously(initialWait, refreshPeriod, GoldpingerConfig.JitterFactor)
+		initialWait += waitBetweenPods
+	}
+}
+
+// destroyPingers takes a list of deleted pods and then for each pod in the list, it stops
+// the goroutines that continuously pings that pod and then deletes the pod from the list of pingers
+func destroyPingers(pingers map[string]*Pinger, deletedPods map[string]*GoldpingerPod) {
+	for podName, pod := range deletedPods {
+		zap.L().Info(
+			"Deleting pod from pingers",
+			zap.String("name", podName),
+			zap.String("podIP", pod.PodIP),
+			zap.String("hostIP", pod.HostIP),
+		)
+		pinger := pingers[podName]
+
+		// Close the channel to stop pinging
+		close(pinger.stopChan)
+
+		// delete from pingers
+		delete(pingers, podName)
+	}
+}
+
+// updateCounters updates the count of health and unhealthy nodes
+func updateCounters() {
+	checkResultsMux.Lock()
+	defer checkResultsMux.Unlock()
+
+	var counterHealthy float64
+	for _, result := range checkResults.PodResults {
+		if result.OK != nil && *result.OK {
+			counterHealthy++
+		}
+	}
+	CountHealthyUnhealthyNodes(counterHealthy, float64(len(checkResults.PodResults))-counterHealthy)
+	// check external targets, don't block the access to checkResultsMux
+	nodesHealthy := int(counterHealthy) == len(checkResults.PodResults)
+	go func(healthySoFar bool) {
+		if healthySoFar {
+			probeResults := checkTargets()
+			for host := range probeResults {
+				for _, response := range probeResults[host] {
+					if response.Error != "" {
+						healthySoFar = false
+						break
+					}
+				}
+			}
+		}
+		SetClusterHealth(healthySoFar)
+	}(nodesHealthy)
+}
+
+// collectResults simply reads results from the results channel and saves them in a map
+func collectResults(resultsChan <-chan PingAllPodsResult) {
+	refreshPeriod := time.Duration(GoldpingerConfig.RefreshInterval) * time.Second
+	updateTicker := time.NewTicker(refreshPeriod)
+	for {
+		select {
+		case <-updateTicker.C:
+			// Every time our update ticker ticks, update the count of healthy/unhealthy nodes
+			updateCounters()
+		case response := <-resultsChan:
+			// On getting a ping response, if the pinger is not being deleted,
+			// simply save it for later
+			checkResultsMux.Lock()
+			if response.deleted {
+				delete(checkResults.PodResults, response.podName)
+			} else {
+				checkResults.PodResults[response.podName] = response.podResult
+			}
+			checkResultsMux.Unlock()
+		}
+	}
+}
+
 func StartUpdater() {
 	if GoldpingerConfig.RefreshInterval <= 0 {
-		log.Println("Not creating updater, period is 0")
+		zap.L().Info("Not creating updater, refresh interval is negative", zap.Int("RefreshInterval", GoldpingerConfig.RefreshInterval))
 		return
 	}
 
-	// start the updater
-	go func() {
-		for {
-			results := PingAllPods(GoldpingerConfig.PodSelecter.SelectPods())
-			var troublemakers []string
-			for podIP, value := range results.PodResults {
-				if *value.OK != true {
-					troublemakers = append(troublemakers, fmt.Sprintf("%s (%s)", podIP, value.HostIP.String()))
-				}
-			}
-			if len(troublemakers) > 0 {
-				log.Println("Updater ran into trouble with these peers: ", troublemakers)
-			}
-			time.Sleep(time.Duration(GoldpingerConfig.RefreshInterval) * time.Second)
-		}
-	}()
+	pods := SelectPods()
+
+	// Create a channel for the results
+	resultsChan := make(chan PingAllPodsResult, len(pods))
+	go updatePingers(resultsChan)
+	go collectResults(resultsChan)
 }

pkg/models/call_stats.go

@@ -6,12 +6,14 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
+	"context"
 
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 )
 
 // CallStats call stats
+//
 // swagger:model CallStats
 type CallStats struct {
 
@@ -30,6 +32,11 @@ func (m *CallStats) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
+// ContextValidate validates this call stats based on context it is used
+func (m *CallStats) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	return nil
+}
+
 // MarshalBinary interface implementation
 func (m *CallStats) MarshalBinary() ([]byte, error) {
 	if m == nil {

pkg/models/check_all_pod_result.go

@@ -6,14 +6,16 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
+	"context"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // CheckAllPodResult check all pod result
+//
 // swagger:model CheckAllPodResult
 type CheckAllPodResult struct {
 
@@ -24,6 +26,10 @@ type CheckAllPodResult struct {
 	// o k
 	OK *bool `json:"OK,omitempty"`
 
+	// pod IP
+	// Format: ipv4
+	PodIP strfmt.IPv4 `json:"PodIP,omitempty"`
+
 	// error
 	Error string `json:"error,omitempty"`
 
@@ -42,6 +48,10 @@ func (m *CheckAllPodResult) Validate(formats strfmt.Registry) error {
 		res = append(res, err)
 	}
 
+	if err := m.validatePodIP(formats); err != nil {
+		res = append(res, err)
+	}
+
 	if err := m.validateResponse(formats); err != nil {
 		res = append(res, err)
 	}
@@ -53,7 +63,6 @@ func (m *CheckAllPodResult) Validate(formats strfmt.Registry) error {
 }
 
 func (m *CheckAllPodResult) validateHostIP(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.HostIP) { // not required
 		return nil
 	}
@@ -65,8 +74,19 @@ func (m *CheckAllPodResult) validateHostIP(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *CheckAllPodResult) validateResponse(formats strfmt.Registry) error {
+func (m *CheckAllPodResult) validatePodIP(formats strfmt.Registry) error {
+	if swag.IsZero(m.PodIP) { // not required
+		return nil
+	}
 
+	if err := validate.FormatOf("PodIP", "body", "ipv4", m.PodIP.String(), formats); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (m *CheckAllPodResult) validateResponse(formats strfmt.Registry) error {
 	if swag.IsZero(m.Response) { // not required
 		return nil
 	}
@@ -75,6 +95,38 @@ func (m *CheckAllPodResult) validateResponse(formats strfmt.Registry) error {
 		if err := m.Response.Validate(formats); err != nil {
 			if ve, ok := err.(*errors.Validation); ok {
 				return ve.ValidateName("response")
+			} else if ce, ok := err.(*errors.CompositeError); ok {
+				return ce.ValidateName("response")
+			}
+			return err
+		}
+	}
+
+	return nil
+}
+
+// ContextValidate validate this check all pod result based on the context it is used
+func (m *CheckAllPodResult) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.contextValidateResponse(ctx, formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *CheckAllPodResult) contextValidateResponse(ctx context.Context, formats strfmt.Registry) error {
+
+	if m.Response != nil {
+		if err := m.Response.ContextValidate(ctx, formats); err != nil {
+			if ve, ok := err.(*errors.Validation); ok {
+				return ve.ValidateName("response")
+			} else if ce, ok := err.(*errors.CompositeError); ok {
+				return ce.ValidateName("response")
 			}
 			return err
 		}

pkg/models/check_all_results.go

@@ -6,25 +6,23 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
+	"context"
 	"strconv"
 
-	strfmt "github.com/go-openapi/strfmt"
-
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // CheckAllResults check all results
+//
 // swagger:model CheckAllResults
 type CheckAllResults struct {
 
 	// o k
 	OK *bool `json:"OK,omitempty"`
 
-	// dns results
-	DNSResults map[string]DNSResults `json:"dnsResults,omitempty"`
-
 	// hosts
 	Hosts []*CheckAllResultsHostsItems0 `json:"hosts"`
 
@@ -34,6 +32,9 @@ type CheckAllResults struct {
 	// hosts number
 	HostsNumber int32 `json:"hosts-number,omitempty"`
 
+	// probe results
+	ProbeResults map[string]ProbeResults `json:"probeResults,omitempty"`
+
 	// responses
 	Responses map[string]CheckAllPodResult `json:"responses,omitempty"`
 }
@@ -42,11 +43,11 @@ type CheckAllResults struct {
 func (m *CheckAllResults) Validate(formats strfmt.Registry) error {
 	var res []error
 
-	if err := m.validateDNSResults(formats); err != nil {
+	if err := m.validateHosts(formats); err != nil {
 		res = append(res, err)
 	}
 
-	if err := m.validateHosts(formats); err != nil {
+	if err := m.validateProbeResults(formats); err != nil {
 		res = append(res, err)
 	}
 
@@ -60,27 +61,7 @@ func (m *CheckAllResults) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *CheckAllResults) validateDNSResults(formats strfmt.Registry) error {
-
-	if swag.IsZero(m.DNSResults) { // not required
-		return nil
-	}
-
-	for k := range m.DNSResults {
-
-		if val, ok := m.DNSResults[k]; ok {
-			if err := val.Validate(formats); err != nil {
-				return err
-			}
-		}
-
-	}
-
-	return nil
-}
-
 func (m *CheckAllResults) validateHosts(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.Hosts) { // not required
 		return nil
 	}
@@ -94,6 +75,8 @@ func (m *CheckAllResults) validateHosts(formats strfmt.Registry) error {
 			if err := m.Hosts[i].Validate(formats); err != nil {
 				if ve, ok := err.(*errors.Validation); ok {
 					return ve.ValidateName("hosts" + "." + strconv.Itoa(i))
+				} else if ce, ok := err.(*errors.CompositeError); ok {
+					return ce.ValidateName("hosts" + "." + strconv.Itoa(i))
 				}
 				return err
 			}
@@ -104,8 +87,25 @@ func (m *CheckAllResults) validateHosts(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *CheckAllResults) validateResponses(formats strfmt.Registry) error {
+func (m *CheckAllResults) validateProbeResults(formats strfmt.Registry) error {
+	if swag.IsZero(m.ProbeResults) { // not required
+		return nil
+	}
 
+	for k := range m.ProbeResults {
+
+		if val, ok := m.ProbeResults[k]; ok {
+			if err := val.Validate(formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
+func (m *CheckAllResults) validateResponses(formats strfmt.Registry) error {
 	if swag.IsZero(m.Responses) { // not required
 		return nil
 	}
@@ -117,6 +117,83 @@ func (m *CheckAllResults) validateResponses(formats strfmt.Registry) error {
 		}
 		if val, ok := m.Responses[k]; ok {
 			if err := val.Validate(formats); err != nil {
+				if ve, ok := err.(*errors.Validation); ok {
+					return ve.ValidateName("responses" + "." + k)
+				} else if ce, ok := err.(*errors.CompositeError); ok {
+					return ce.ValidateName("responses" + "." + k)
+				}
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
+// ContextValidate validate this check all results based on the context it is used
+func (m *CheckAllResults) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.contextValidateHosts(ctx, formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.contextValidateProbeResults(ctx, formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.contextValidateResponses(ctx, formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *CheckAllResults) contextValidateHosts(ctx context.Context, formats strfmt.Registry) error {
+
+	for i := 0; i < len(m.Hosts); i++ {
+
+		if m.Hosts[i] != nil {
+			if err := m.Hosts[i].ContextValidate(ctx, formats); err != nil {
+				if ve, ok := err.(*errors.Validation); ok {
+					return ve.ValidateName("hosts" + "." + strconv.Itoa(i))
+				} else if ce, ok := err.(*errors.CompositeError); ok {
+					return ce.ValidateName("hosts" + "." + strconv.Itoa(i))
+				}
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
+func (m *CheckAllResults) contextValidateProbeResults(ctx context.Context, formats strfmt.Registry) error {
+
+	for k := range m.ProbeResults {
+
+		if val, ok := m.ProbeResults[k]; ok {
+			if err := val.ContextValidate(ctx, formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
+func (m *CheckAllResults) contextValidateResponses(ctx context.Context, formats strfmt.Registry) error {
+
+	for k := range m.Responses {
+
+		if val, ok := m.Responses[k]; ok {
+			if err := val.ContextValidate(ctx, formats); err != nil {
 				return err
 			}
 		}
@@ -145,6 +222,7 @@ func (m *CheckAllResults) UnmarshalBinary(b []byte) error {
 }
 
 // CheckAllResultsHostsItems0 check all results hosts items0
+//
 // swagger:model CheckAllResultsHostsItems0
 type CheckAllResultsHostsItems0 struct {
 
@@ -155,6 +233,9 @@ type CheckAllResultsHostsItems0 struct {
 	// pod IP
 	// Format: ipv4
 	PodIP strfmt.IPv4 `json:"podIP,omitempty"`
+
+	// pod name
+	PodName string `json:"podName,omitempty"`
 }
 
 // Validate validates this check all results hosts items0
@@ -176,7 +257,6 @@ func (m *CheckAllResultsHostsItems0) Validate(formats strfmt.Registry) error {
 }
 
 func (m *CheckAllResultsHostsItems0) validateHostIP(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.HostIP) { // not required
 		return nil
 	}
@@ -189,7 +269,6 @@ func (m *CheckAllResultsHostsItems0) validateHostIP(formats strfmt.Registry) err
 }
 
 func (m *CheckAllResultsHostsItems0) validatePodIP(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.PodIP) { // not required
 		return nil
 	}
@@ -201,6 +280,11 @@ func (m *CheckAllResultsHostsItems0) validatePodIP(formats strfmt.Registry) erro
 	return nil
 }
 
+// ContextValidate validates this check all results hosts items0 based on context it is used
+func (m *CheckAllResultsHostsItems0) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	return nil
+}
+
 // MarshalBinary interface implementation
 func (m *CheckAllResultsHostsItems0) MarshalBinary() ([]byte, error) {
 	if m == nil {

pkg/models/check_results.go

@@ -6,33 +6,35 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
+	"context"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // CheckResults check results
+//
 // swagger:model CheckResults
 type CheckResults struct {
 
-	// dns results
-	DNSResults DNSResults `json:"dnsResults,omitempty"`
-
 	// pod results
 	PodResults map[string]PodResult `json:"podResults,omitempty"`
+
+	// probe results
+	ProbeResults ProbeResults `json:"probeResults,omitempty"`
 }
 
 // Validate validates this check results
 func (m *CheckResults) Validate(formats strfmt.Registry) error {
 	var res []error
 
-	if err := m.validateDNSResults(formats); err != nil {
+	if err := m.validatePodResults(formats); err != nil {
 		res = append(res, err)
 	}
 
-	if err := m.validatePodResults(formats); err != nil {
+	if err := m.validateProbeResults(formats); err != nil {
 		res = append(res, err)
 	}
 
@@ -42,24 +44,7 @@ func (m *CheckResults) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *CheckResults) validateDNSResults(formats strfmt.Registry) error {
-
-	if swag.IsZero(m.DNSResults) { // not required
-		return nil
-	}
-
-	if err := m.DNSResults.Validate(formats); err != nil {
-		if ve, ok := err.(*errors.Validation); ok {
-			return ve.ValidateName("dnsResults")
-		}
-		return err
-	}
-
-	return nil
-}
-
 func (m *CheckResults) validatePodResults(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.PodResults) { // not required
 		return nil
 	}
@@ -71,6 +56,11 @@ func (m *CheckResults) validatePodResults(formats strfmt.Registry) error {
 		}
 		if val, ok := m.PodResults[k]; ok {
 			if err := val.Validate(formats); err != nil {
+				if ve, ok := err.(*errors.Validation); ok {
+					return ve.ValidateName("podResults" + "." + k)
+				} else if ce, ok := err.(*errors.CompositeError); ok {
+					return ce.ValidateName("podResults" + "." + k)
+				}
 				return err
 			}
 		}
@@ -80,6 +70,72 @@ func (m *CheckResults) validatePodResults(formats strfmt.Registry) error {
 	return nil
 }
 
+func (m *CheckResults) validateProbeResults(formats strfmt.Registry) error {
+	if swag.IsZero(m.ProbeResults) { // not required
+		return nil
+	}
+
+	if m.ProbeResults != nil {
+		if err := m.ProbeResults.Validate(formats); err != nil {
+			if ve, ok := err.(*errors.Validation); ok {
+				return ve.ValidateName("probeResults")
+			} else if ce, ok := err.(*errors.CompositeError); ok {
+				return ce.ValidateName("probeResults")
+			}
+			return err
+		}
+	}
+
+	return nil
+}
+
+// ContextValidate validate this check results based on the context it is used
+func (m *CheckResults) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.contextValidatePodResults(ctx, formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.contextValidateProbeResults(ctx, formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *CheckResults) contextValidatePodResults(ctx context.Context, formats strfmt.Registry) error {
+
+	for k := range m.PodResults {
+
+		if val, ok := m.PodResults[k]; ok {
+			if err := val.ContextValidate(ctx, formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
+func (m *CheckResults) contextValidateProbeResults(ctx context.Context, formats strfmt.Registry) error {
+
+	if err := m.ProbeResults.ContextValidate(ctx, formats); err != nil {
+		if ve, ok := err.(*errors.Validation); ok {
+			return ve.ValidateName("probeResults")
+		} else if ce, ok := err.(*errors.CompositeError); ok {
+			return ce.ValidateName("probeResults")
+		}
+		return err
+	}
+
+	return nil
+}
+
 // MarshalBinary interface implementation
 func (m *CheckResults) MarshalBinary() ([]byte, error) {
 	if m == nil {

pkg/models/cluster_health_results.go

@@ -0,0 +1,103 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"context"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
+	"github.com/go-openapi/validate"
+)
+
+// ClusterHealthResults cluster health results
+//
+// swagger:model ClusterHealthResults
+type ClusterHealthResults struct {
+
+	// o k
+	// Required: true
+	OK bool `json:"OK"`
+
+	// duration ns
+	DurationNs int64 `json:"duration-ns,omitempty"`
+
+	// generated at
+	// Format: date-time
+	GeneratedAt strfmt.DateTime `json:"generated-at,omitempty"`
+
+	// nodes healthy
+	NodesHealthy []string `json:"nodesHealthy"`
+
+	// nodes total
+	NodesTotal int64 `json:"nodesTotal,omitempty"`
+
+	// nodes unhealthy
+	NodesUnhealthy []string `json:"nodesUnhealthy"`
+}
+
+// Validate validates this cluster health results
+func (m *ClusterHealthResults) Validate(formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.validateOK(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.validateGeneratedAt(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *ClusterHealthResults) validateOK(formats strfmt.Registry) error {
+
+	if err := validate.Required("OK", "body", bool(m.OK)); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (m *ClusterHealthResults) validateGeneratedAt(formats strfmt.Registry) error {
+	if swag.IsZero(m.GeneratedAt) { // not required
+		return nil
+	}
+
+	if err := validate.FormatOf("generated-at", "body", "date-time", m.GeneratedAt.String(), formats); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// ContextValidate validates this cluster health results based on context it is used
+func (m *ClusterHealthResults) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	return nil
+}
+
+// MarshalBinary interface implementation
+func (m *ClusterHealthResults) MarshalBinary() ([]byte, error) {
+	if m == nil {
+		return nil, nil
+	}
+	return swag.WriteJSON(m)
+}
+
+// UnmarshalBinary interface implementation
+func (m *ClusterHealthResults) UnmarshalBinary(b []byte) error {
+	var res ClusterHealthResults
+	if err := swag.ReadJSON(b, &res); err != nil {
+		return err
+	}
+	*m = res
+	return nil
+}

pkg/models/dns_result.go

@@ -6,12 +6,14 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
+	"context"
 
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 )
 
 // DNSResult Dns result
+//
 // swagger:model DnsResult
 type DNSResult struct {
 
@@ -27,6 +29,11 @@ func (m *DNSResult) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
+// ContextValidate validates this Dns result based on context it is used
+func (m *DNSResult) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	return nil
+}
+
 // MarshalBinary interface implementation
 func (m *DNSResult) MarshalBinary() ([]byte, error) {
 	if m == nil {

pkg/models/dns_results.go

@@ -6,13 +6,15 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
+	"context"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/validate"
 )
 
 // DNSResults Dns results
+//
 // swagger:model DnsResults
 type DNSResults map[string]DNSResult
 
@@ -38,3 +40,23 @@ func (m DNSResults) Validate(formats strfmt.Registry) error {
 	}
 	return nil
 }
+
+// ContextValidate validate this Dns results based on the context it is used
+func (m DNSResults) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	var res []error
+
+	for k := range m {
+
+		if val, ok := m[k]; ok {
+			if err := val.ContextValidate(ctx, formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}

pkg/models/health_check_results.go

@@ -6,14 +6,16 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
+	"context"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // HealthCheckResults health check results
+//
 // swagger:model HealthCheckResults
 type HealthCheckResults struct {
 
@@ -43,7 +45,6 @@ func (m *HealthCheckResults) Validate(formats strfmt.Registry) error {
 }
 
 func (m *HealthCheckResults) validateGeneratedAt(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.GeneratedAt) { // not required
 		return nil
 	}
@@ -55,6 +56,11 @@ func (m *HealthCheckResults) validateGeneratedAt(formats strfmt.Registry) error
 	return nil
 }
 
+// ContextValidate validates this health check results based on context it is used
+func (m *HealthCheckResults) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	return nil
+}
+
 // MarshalBinary interface implementation
 func (m *HealthCheckResults) MarshalBinary() ([]byte, error) {
 	if m == nil {

pkg/models/ping_results.go

@@ -6,14 +6,16 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
+	"context"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // PingResults ping results
+//
 // swagger:model PingResults
 type PingResults struct {
 
@@ -44,7 +46,6 @@ func (m *PingResults) Validate(formats strfmt.Registry) error {
 }
 
 func (m *PingResults) validateBootTime(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.BootTime) { // not required
 		return nil
 	}
@@ -57,7 +58,6 @@ func (m *PingResults) validateBootTime(formats strfmt.Registry) error {
 }
 
 func (m *PingResults) validateReceived(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.Received) { // not required
 		return nil
 	}
@@ -66,6 +66,38 @@ func (m *PingResults) validateReceived(formats strfmt.Registry) error {
 		if err := m.Received.Validate(formats); err != nil {
 			if ve, ok := err.(*errors.Validation); ok {
 				return ve.ValidateName("received")
+			} else if ce, ok := err.(*errors.CompositeError); ok {
+				return ce.ValidateName("received")
+			}
+			return err
+		}
+	}
+
+	return nil
+}
+
+// ContextValidate validate this ping results based on the context it is used
+func (m *PingResults) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.contextValidateReceived(ctx, formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *PingResults) contextValidateReceived(ctx context.Context, formats strfmt.Registry) error {
+
+	if m.Received != nil {
+		if err := m.Received.ContextValidate(ctx, formats); err != nil {
+			if ve, ok := err.(*errors.Validation); ok {
+				return ve.ValidateName("received")
+			} else if ce, ok := err.(*errors.CompositeError); ok {
+				return ce.ValidateName("received")
 			}
 			return err
 		}

pkg/models/pod_result.go

@@ -6,14 +6,16 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
+	"context"
 
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // PodResult pod result
+//
 // swagger:model PodResult
 type PodResult struct {
 
@@ -24,6 +26,14 @@ type PodResult struct {
 	// o k
 	OK *bool `json:"OK,omitempty"`
 
+	// ping time
+	// Format: date-time
+	PingTime strfmt.DateTime `json:"PingTime,omitempty"`
+
+	// pod IP
+	// Format: ipv4
+	PodIP strfmt.IPv4 `json:"PodIP,omitempty"`
+
 	// error
 	Error string `json:"error,omitempty"`
 
@@ -45,6 +55,14 @@ func (m *PodResult) Validate(formats strfmt.Registry) error {
 		res = append(res, err)
 	}
 
+	if err := m.validatePingTime(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.validatePodIP(formats); err != nil {
+		res = append(res, err)
+	}
+
 	if err := m.validateResponse(formats); err != nil {
 		res = append(res, err)
 	}
@@ -56,7 +74,6 @@ func (m *PodResult) Validate(formats strfmt.Registry) error {
 }
 
 func (m *PodResult) validateHostIP(formats strfmt.Registry) error {
-
 	if swag.IsZero(m.HostIP) { // not required
 		return nil
 	}
@@ -68,8 +85,31 @@ func (m *PodResult) validateHostIP(formats strfmt.Registry) error {
 	return nil
 }
 
-func (m *PodResult) validateResponse(formats strfmt.Registry) error {
+func (m *PodResult) validatePingTime(formats strfmt.Registry) error {
+	if swag.IsZero(m.PingTime) { // not required
+		return nil
+	}
 
+	if err := validate.FormatOf("PingTime", "body", "date-time", m.PingTime.String(), formats); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (m *PodResult) validatePodIP(formats strfmt.Registry) error {
+	if swag.IsZero(m.PodIP) { // not required
+		return nil
+	}
+
+	if err := validate.FormatOf("PodIP", "body", "ipv4", m.PodIP.String(), formats); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (m *PodResult) validateResponse(formats strfmt.Registry) error {
 	if swag.IsZero(m.Response) { // not required
 		return nil
 	}
@@ -78,6 +118,38 @@ func (m *PodResult) validateResponse(formats strfmt.Registry) error {
 		if err := m.Response.Validate(formats); err != nil {
 			if ve, ok := err.(*errors.Validation); ok {
 				return ve.ValidateName("response")
+			} else if ce, ok := err.(*errors.CompositeError); ok {
+				return ce.ValidateName("response")
+			}
+			return err
+		}
+	}
+
+	return nil
+}
+
+// ContextValidate validate this pod result based on the context it is used
+func (m *PodResult) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.contextValidateResponse(ctx, formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *PodResult) contextValidateResponse(ctx context.Context, formats strfmt.Registry) error {
+
+	if m.Response != nil {
+		if err := m.Response.ContextValidate(ctx, formats); err != nil {
+			if ve, ok := err.(*errors.Validation); ok {
+				return ve.ValidateName("response")
+			} else if ce, ok := err.(*errors.CompositeError); ok {
+				return ce.ValidateName("response")
 			}
 			return err
 		}

pkg/models/probe_result.go

@@ -0,0 +1,56 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"context"
+
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
+)
+
+// ProbeResult probe result
+//
+// swagger:model ProbeResult
+type ProbeResult struct {
+
+	// error
+	Error string `json:"error,omitempty"`
+
+	// protocol
+	Protocol string `json:"protocol,omitempty"`
+
+	// response time ms
+	ResponseTimeMs int64 `json:"response-time-ms,omitempty"`
+}
+
+// Validate validates this probe result
+func (m *ProbeResult) Validate(formats strfmt.Registry) error {
+	return nil
+}
+
+// ContextValidate validates this probe result based on context it is used
+func (m *ProbeResult) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	return nil
+}
+
+// MarshalBinary interface implementation
+func (m *ProbeResult) MarshalBinary() ([]byte, error) {
+	if m == nil {
+		return nil, nil
+	}
+	return swag.WriteJSON(m)
+}
+
+// UnmarshalBinary interface implementation
+func (m *ProbeResult) UnmarshalBinary(b []byte) error {
+	var res ProbeResult
+	if err := swag.ReadJSON(b, &res); err != nil {
+		return err
+	}
+	*m = res
+	return nil
+}

pkg/models/probe_results.go

@@ -0,0 +1,78 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"context"
+	"strconv"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/validate"
+)
+
+// ProbeResults probe results
+//
+// swagger:model ProbeResults
+type ProbeResults map[string][]ProbeResult
+
+// Validate validates this probe results
+func (m ProbeResults) Validate(formats strfmt.Registry) error {
+	var res []error
+
+	for k := range m {
+
+		if err := validate.Required(k, "body", m[k]); err != nil {
+			return err
+		}
+
+		for i := 0; i < len(m[k]); i++ {
+
+			if err := m[k][i].Validate(formats); err != nil {
+				if ve, ok := err.(*errors.Validation); ok {
+					return ve.ValidateName(k + "." + strconv.Itoa(i))
+				} else if ce, ok := err.(*errors.CompositeError); ok {
+					return ce.ValidateName(k + "." + strconv.Itoa(i))
+				}
+				return err
+			}
+
+		}
+
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+// ContextValidate validate this probe results based on the context it is used
+func (m ProbeResults) ContextValidate(ctx context.Context, formats strfmt.Registry) error {
+	var res []error
+
+	for k := range m {
+
+		for i := 0; i < len(m[k]); i++ {
+
+			if err := m[k][i].ContextValidate(ctx, formats); err != nil {
+				if ve, ok := err.(*errors.Validation); ok {
+					return ve.ValidateName(k + "." + strconv.Itoa(i))
+				} else if ce, ok := err.(*errors.CompositeError); ok {
+					return ce.ValidateName(k + "." + strconv.Itoa(i))
+				}
+				return err
+			}
+
+		}
+
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}

pkg/restapi/configure_goldpinger.go

@@ -17,8 +17,8 @@
 package restapi
 
 import (
+	"context"
 	"crypto/tls"
-	"log"
 	"net/http"
 
 	"strings"
@@ -26,9 +26,10 @@ import (
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	"github.com/go-openapi/runtime/middleware"
+	"go.uber.org/zap"
 
-	"github.com/bloomberg/goldpinger/pkg/goldpinger"
-	"github.com/bloomberg/goldpinger/pkg/restapi/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/goldpinger"
+	"github.com/bloomberg/goldpinger/v3/pkg/restapi/operations"
 	"github.com/go-openapi/swag"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
@@ -47,7 +48,7 @@ func configureFlags(api *operations.GoldpingerAPI) {
 
 func configureAPI(api *operations.GoldpingerAPI) http.Handler {
 	// configure the api here
-	ps := goldpinger.GoldpingerConfig.PodSelecter
+	api.Logger = zap.S().Infof
 	api.ServeError = errors.ServeError
 
 	api.JSONConsumer = runtime.JSONConsumer()
@@ -56,19 +57,58 @@ func configureAPI(api *operations.GoldpingerAPI) http.Handler {
 	api.PingHandler = operations.PingHandlerFunc(
 		func(params operations.PingParams) middleware.Responder {
 			goldpinger.CountCall("received", "ping")
-			return operations.NewPingOK().WithPayload(goldpinger.GetStats())
+
+			ctx, cancel := context.WithTimeout(
+				params.HTTPRequest.Context(),
+				goldpinger.GoldpingerConfig.PingTimeout,
+			)
+			defer cancel()
+
+			return operations.NewPingOK().WithPayload(goldpinger.GetStats(ctx))
 		})
 
 	api.CheckServicePodsHandler = operations.CheckServicePodsHandlerFunc(
 		func(params operations.CheckServicePodsParams) middleware.Responder {
 			goldpinger.CountCall("received", "check")
-			return operations.NewCheckServicePodsOK().WithPayload(goldpinger.CheckNeighbours(ps))
+
+			ctx, cancel := context.WithTimeout(
+				params.HTTPRequest.Context(),
+				goldpinger.GoldpingerConfig.CheckTimeout,
+			)
+			defer cancel()
+
+			return operations.NewCheckServicePodsOK().WithPayload(goldpinger.CheckNeighbours(ctx))
 		})
 
 	api.CheckAllPodsHandler = operations.CheckAllPodsHandlerFunc(
 		func(params operations.CheckAllPodsParams) middleware.Responder {
 			goldpinger.CountCall("received", "check_all")
-			return operations.NewCheckAllPodsOK().WithPayload(goldpinger.CheckNeighboursNeighbours(ps))
+
+			ctx, cancel := context.WithTimeout(
+				params.HTTPRequest.Context(),
+				goldpinger.GoldpingerConfig.CheckAllTimeout,
+			)
+			defer cancel()
+
+			return operations.NewCheckAllPodsOK().WithPayload(goldpinger.CheckNeighboursNeighbours(ctx))
+		})
+
+	api.ClusterHealthHandler = operations.ClusterHealthHandlerFunc(
+		func(params operations.ClusterHealthParams) middleware.Responder {
+			goldpinger.CountCall("received", "cluster_health")
+
+			ctx, cancel := context.WithTimeout(
+				params.HTTPRequest.Context(),
+				goldpinger.GoldpingerConfig.CheckAllTimeout,
+			)
+			defer cancel()
+
+			payload := goldpinger.CheckCluster(ctx)
+			if payload.OK {
+				return operations.NewClusterHealthOK().WithPayload(payload)
+			} else {
+				return operations.NewClusterHealthIMATeapot().WithPayload(payload)
+			}
 		})
 
 	api.HealthzHandler = operations.HealthzHandlerFunc(
@@ -106,7 +146,7 @@ func setupMiddlewares(handler http.Handler) http.Handler {
 }
 
 func fileServerMiddleware(next http.Handler) http.Handler {
-	log.Println("Added the static middleware")
+	zap.L().Info("Added the static middleware")
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		fileServer := http.FileServer(http.Dir(goldpinger.GoldpingerConfig.StaticFilePath))
 		if r.URL.Path == "/" {
@@ -123,7 +163,7 @@ func fileServerMiddleware(next http.Handler) http.Handler {
 }
 
 func prometheusMetricsMiddleware(next http.Handler) http.Handler {
-	log.Println("Added the prometheus middleware")
+	zap.L().Info("Added the prometheus middleware")
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path == "/metrics" {
 			http.StripPrefix("/metrics", promhttp.Handler()).ServeHTTP(w, r)

pkg/restapi/doc.go

@@ -1,20 +1,18 @@
 // Code generated by go-swagger; DO NOT EDIT.
 
-/*
-Package restapi Goldpinger
-
-    Schemes:
-      http
-    Host: localhost
-    BasePath: /
-    Version: 2.0.0
-
-    Consumes:
-    - application/json
-
-    Produces:
-    - application/json
-
-swagger:meta
-*/
+// Package restapi Goldpinger
+//
+//  Schemes:
+//    http
+//  Host: localhost
+//  BasePath: /
+//  Version: 3.0.0
+//
+//  Consumes:
+//    - application/json
+//
+//  Produces:
+//    - application/json
+//
+// swagger:meta
 package restapi

pkg/restapi/embedded_spec.go

@@ -21,7 +21,7 @@ func init() {
   "swagger": "2.0",
   "info": {
     "title": "Goldpinger",
-    "version": "2.0.0"
+    "version": "3.0.0"
   },
   "paths": {
     "/check": {
@@ -58,6 +58,29 @@ func init() {
         }
       }
     },
+    "/cluster_health": {
+      "get": {
+        "description": "Checks the full graph. Returns a binary OK or not OK.",
+        "produces": [
+          "application/json"
+        ],
+        "operationId": "clusterHealth",
+        "responses": {
+          "200": {
+            "description": "Healthy cluster",
+            "schema": {
+              "$ref": "#/definitions/ClusterHealthResults"
+            }
+          },
+          "418": {
+            "description": "Unhealthy cluster",
+            "schema": {
+              "$ref": "#/definitions/ClusterHealthResults"
+            }
+          }
+        }
+      }
+    },
     "/healthz": {
       "get": {
         "description": "The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.",
@@ -124,6 +147,10 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "PodIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
         "error": {
           "type": "string"
         },
@@ -161,6 +188,9 @@ func init() {
               "podIP": {
                 "type": "string",
                 "format": "ipv4"
+              },
+              "podName": {
+                "type": "string"
               }
             }
           }
@@ -173,11 +203,23 @@ func init() {
           "type": "integer",
           "format": "int32"
         },
+        "httpResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/HttpResults"
+          }
+        },
         "responses": {
           "type": "object",
           "additionalProperties": {
             "$ref": "#/definitions/CheckAllPodResult"
           }
+        },
+        "tcpResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/TcpResults"
+          }
         }
       }
     },
@@ -187,29 +229,60 @@ func init() {
         "dnsResults": {
           "$ref": "#/definitions/DnsResults"
         },
+        "httpResults": {
+          "$ref": "#/definitions/HttpResults"
+        },
         "podResults": {
           "type": "object",
           "additionalProperties": {
             "$ref": "#/definitions/PodResult"
           }
+        },
+        "tcpResults": {
+          "$ref": "#/definitions/TcpResults"
         }
       }
     },
-    "DnsResult": {
+    "ClusterHealthResults": {
+      "type": "object",
+      "required": [
+        "OK"
+      ],
       "properties": {
-        "error": {
-          "type": "string"
+        "OK": {
+          "type": "boolean",
+          "default": false
         },
-        "response-time-ms": {
-          "type": "number",
+        "duration-ns": {
+          "type": "integer",
           "format": "int64"
+        },
+        "generated-at": {
+          "type": "string",
+          "format": "date-time"
+        },
+        "nodesHealthy": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        },
+        "nodesTotal": {
+          "type": "integer",
+          "format": "int64"
+        },
+        "nodesUnhealthy": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
         }
       }
     },
     "DnsResults": {
       "type": "object",
       "additionalProperties": {
-        "$ref": "#/definitions/DnsResult"
+        "$ref": "#/definitions/ProbeResult"
       }
     },
     "HealthCheckResults": {
@@ -229,6 +302,12 @@ func init() {
         }
       }
     },
+    "HttpResults": {
+      "type": "object",
+      "additionalProperties": {
+        "$ref": "#/definitions/ProbeResult"
+      }
+    },
     "PingResults": {
       "type": "object",
       "properties": {
@@ -252,6 +331,14 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "PingTime": {
+          "type": "string",
+          "format": "date-time"
+        },
+        "PodIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
         "error": {
           "type": "string"
         },
@@ -268,6 +355,23 @@ func init() {
           "format": "int32"
         }
       }
+    },
+    "ProbeResult": {
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "response-time-ms": {
+          "type": "number",
+          "format": "int64"
+        }
+      }
+    },
+    "TcpResults": {
+      "type": "object",
+      "additionalProperties": {
+        "$ref": "#/definitions/ProbeResult"
+      }
     }
   }
 }`))
@@ -275,7 +379,7 @@ func init() {
   "swagger": "2.0",
   "info": {
     "title": "Goldpinger",
-    "version": "2.0.0"
+    "version": "3.0.0"
   },
   "paths": {
     "/check": {
@@ -312,6 +416,29 @@ func init() {
         }
       }
     },
+    "/cluster_health": {
+      "get": {
+        "description": "Checks the full graph. Returns a binary OK or not OK.",
+        "produces": [
+          "application/json"
+        ],
+        "operationId": "clusterHealth",
+        "responses": {
+          "200": {
+            "description": "Healthy cluster",
+            "schema": {
+              "$ref": "#/definitions/ClusterHealthResults"
+            }
+          },
+          "418": {
+            "description": "Unhealthy cluster",
+            "schema": {
+              "$ref": "#/definitions/ClusterHealthResults"
+            }
+          }
+        }
+      }
+    },
     "/healthz": {
       "get": {
         "description": "The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.",
@@ -378,6 +505,10 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "PodIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
         "error": {
           "type": "string"
         },
@@ -406,17 +537,7 @@ func init() {
         "hosts": {
           "type": "array",
           "items": {
-            "type": "object",
-            "properties": {
-              "hostIP": {
-                "type": "string",
-                "format": "ipv4"
-              },
-              "podIP": {
-                "type": "string",
-                "format": "ipv4"
-              }
-            }
+            "$ref": "#/definitions/CheckAllResultsHostsItems0"
           }
         },
         "hosts-healthy": {
@@ -427,11 +548,39 @@ func init() {
           "type": "integer",
           "format": "int32"
         },
+        "httpResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/HttpResults"
+          }
+        },
         "responses": {
           "type": "object",
           "additionalProperties": {
             "$ref": "#/definitions/CheckAllPodResult"
           }
+        },
+        "tcpResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/TcpResults"
+          }
+        }
+      }
+    },
+    "CheckAllResultsHostsItems0": {
+      "type": "object",
+      "properties": {
+        "hostIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
+        "podIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
+        "podName": {
+          "type": "string"
         }
       }
     },
@@ -441,29 +590,60 @@ func init() {
         "dnsResults": {
           "$ref": "#/definitions/DnsResults"
         },
+        "httpResults": {
+          "$ref": "#/definitions/HttpResults"
+        },
         "podResults": {
           "type": "object",
           "additionalProperties": {
             "$ref": "#/definitions/PodResult"
           }
+        },
+        "tcpResults": {
+          "$ref": "#/definitions/TcpResults"
         }
       }
     },
-    "DnsResult": {
+    "ClusterHealthResults": {
+      "type": "object",
+      "required": [
+        "OK"
+      ],
       "properties": {
-        "error": {
-          "type": "string"
+        "OK": {
+          "type": "boolean",
+          "default": false
         },
-        "response-time-ms": {
-          "type": "number",
+        "duration-ns": {
+          "type": "integer",
           "format": "int64"
+        },
+        "generated-at": {
+          "type": "string",
+          "format": "date-time"
+        },
+        "nodesHealthy": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        },
+        "nodesTotal": {
+          "type": "integer",
+          "format": "int64"
+        },
+        "nodesUnhealthy": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
         }
       }
     },
     "DnsResults": {
       "type": "object",
       "additionalProperties": {
-        "$ref": "#/definitions/DnsResult"
+        "$ref": "#/definitions/ProbeResult"
       }
     },
     "HealthCheckResults": {
@@ -483,6 +663,12 @@ func init() {
         }
       }
     },
+    "HttpResults": {
+      "type": "object",
+      "additionalProperties": {
+        "$ref": "#/definitions/ProbeResult"
+      }
+    },
     "PingResults": {
       "type": "object",
       "properties": {
@@ -506,6 +692,14 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "PingTime": {
+          "type": "string",
+          "format": "date-time"
+        },
+        "PodIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
         "error": {
           "type": "string"
         },
@@ -522,6 +716,23 @@ func init() {
           "format": "int32"
         }
       }
+    },
+    "ProbeResult": {
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "response-time-ms": {
+          "type": "number",
+          "format": "int64"
+        }
+      }
+    },
+    "TcpResults": {
+      "type": "object",
+      "additionalProperties": {
+        "$ref": "#/definitions/ProbeResult"
+      }
     }
   }
 }`))

pkg/restapi/operations/check_all_pods.go

@@ -8,7 +8,7 @@ package operations
 import (
 	"net/http"
 
-	middleware "github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/middleware"
 )
 
 // CheckAllPodsHandlerFunc turns a function with the right signature into a check all pods handler
@@ -29,7 +29,7 @@ func NewCheckAllPods(ctx *middleware.Context, handler CheckAllPodsHandler) *Chec
 	return &CheckAllPods{Context: ctx, Handler: handler}
 }
 
-/*CheckAllPods swagger:route GET /check_all checkAllPods
+/* CheckAllPods swagger:route GET /check_all checkAllPods
 
 Queries the API server for all other pods in this service, and makes all of them query all of their neighbours, using their pods IPs. Calls their /check endpoint.
 
@@ -42,17 +42,15 @@ type CheckAllPods struct {
 func (o *CheckAllPods) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
 	route, rCtx, _ := o.Context.RouteInfo(r)
 	if rCtx != nil {
-		r = rCtx
+		*r = *rCtx
 	}
 	var Params = NewCheckAllPodsParams()
-
 	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
 		o.Context.Respond(rw, r, route.Produces, route, err)
 		return
 	}
 
 	res := o.Handler.Handle(Params) // actually handle the request
-
 	o.Context.Respond(rw, r, route.Produces, route, res)
 
 }

pkg/restapi/operations/check_all_pods_parameters.go

@@ -13,7 +13,8 @@ import (
 )
 
 // NewCheckAllPodsParams creates a new CheckAllPodsParams object
-// no default values defined in spec.
+//
+// There are no default values defined in the spec.
 func NewCheckAllPodsParams() CheckAllPodsParams {
 
 	return CheckAllPodsParams{}

pkg/restapi/operations/check_all_pods_responses.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/go-openapi/runtime"
 
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // CheckAllPodsOKCode is the HTTP code returned for type CheckAllPodsOK

pkg/restapi/operations/check_service_pods.go

@@ -8,7 +8,7 @@ package operations
 import (
 	"net/http"
 
-	middleware "github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/middleware"
 )
 
 // CheckServicePodsHandlerFunc turns a function with the right signature into a check service pods handler
@@ -29,7 +29,7 @@ func NewCheckServicePods(ctx *middleware.Context, handler CheckServicePodsHandle
 	return &CheckServicePods{Context: ctx, Handler: handler}
 }
 
-/*CheckServicePods swagger:route GET /check checkServicePods
+/* CheckServicePods swagger:route GET /check checkServicePods
 
 Queries the API server for all other pods in this service, and pings them via their pods IPs. Calls their /ping endpoint
 
@@ -42,17 +42,15 @@ type CheckServicePods struct {
 func (o *CheckServicePods) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
 	route, rCtx, _ := o.Context.RouteInfo(r)
 	if rCtx != nil {
-		r = rCtx
+		*r = *rCtx
 	}
 	var Params = NewCheckServicePodsParams()
-
 	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
 		o.Context.Respond(rw, r, route.Produces, route, err)
 		return
 	}
 
 	res := o.Handler.Handle(Params) // actually handle the request
-
 	o.Context.Respond(rw, r, route.Produces, route, res)
 
 }

pkg/restapi/operations/check_service_pods_parameters.go

@@ -13,7 +13,8 @@ import (
 )
 
 // NewCheckServicePodsParams creates a new CheckServicePodsParams object
-// no default values defined in spec.
+//
+// There are no default values defined in the spec.
 func NewCheckServicePodsParams() CheckServicePodsParams {
 
 	return CheckServicePodsParams{}

pkg/restapi/operations/check_service_pods_responses.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/go-openapi/runtime"
 
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // CheckServicePodsOKCode is the HTTP code returned for type CheckServicePodsOK

pkg/restapi/operations/cluster_health.go

@@ -0,0 +1,56 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/runtime/middleware"
+)
+
+// ClusterHealthHandlerFunc turns a function with the right signature into a cluster health handler
+type ClusterHealthHandlerFunc func(ClusterHealthParams) middleware.Responder
+
+// Handle executing the request and returning a response
+func (fn ClusterHealthHandlerFunc) Handle(params ClusterHealthParams) middleware.Responder {
+	return fn(params)
+}
+
+// ClusterHealthHandler interface for that can handle valid cluster health params
+type ClusterHealthHandler interface {
+	Handle(ClusterHealthParams) middleware.Responder
+}
+
+// NewClusterHealth creates a new http.Handler for the cluster health operation
+func NewClusterHealth(ctx *middleware.Context, handler ClusterHealthHandler) *ClusterHealth {
+	return &ClusterHealth{Context: ctx, Handler: handler}
+}
+
+/* ClusterHealth swagger:route GET /cluster_health clusterHealth
+
+Checks the full graph. Returns a binary OK or not OK.
+
+*/
+type ClusterHealth struct {
+	Context *middleware.Context
+	Handler ClusterHealthHandler
+}
+
+func (o *ClusterHealth) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	route, rCtx, _ := o.Context.RouteInfo(r)
+	if rCtx != nil {
+		*r = *rCtx
+	}
+	var Params = NewClusterHealthParams()
+	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
+		o.Context.Respond(rw, r, route.Produces, route, err)
+		return
+	}
+
+	res := o.Handler.Handle(Params) // actually handle the request
+	o.Context.Respond(rw, r, route.Produces, route, res)
+
+}

pkg/restapi/operations/cluster_health_parameters.go

@@ -0,0 +1,46 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime/middleware"
+)
+
+// NewClusterHealthParams creates a new ClusterHealthParams object
+//
+// There are no default values defined in the spec.
+func NewClusterHealthParams() ClusterHealthParams {
+
+	return ClusterHealthParams{}
+}
+
+// ClusterHealthParams contains all the bound params for the cluster health operation
+// typically these are obtained from a http.Request
+//
+// swagger:parameters clusterHealth
+type ClusterHealthParams struct {
+
+	// HTTP Request Object
+	HTTPRequest *http.Request `json:"-"`
+}
+
+// BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
+// for simple values it will use straight method calls.
+//
+// To ensure default values, the struct must have been initialized with NewClusterHealthParams() beforehand.
+func (o *ClusterHealthParams) BindRequest(r *http.Request, route *middleware.MatchedRoute) error {
+	var res []error
+
+	o.HTTPRequest = r
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}

pkg/restapi/operations/cluster_health_responses.go

@@ -0,0 +1,102 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/runtime"
+
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
+)
+
+// ClusterHealthOKCode is the HTTP code returned for type ClusterHealthOK
+const ClusterHealthOKCode int = 200
+
+/*ClusterHealthOK Healthy cluster
+
+swagger:response clusterHealthOK
+*/
+type ClusterHealthOK struct {
+
+	/*
+	  In: Body
+	*/
+	Payload *models.ClusterHealthResults `json:"body,omitempty"`
+}
+
+// NewClusterHealthOK creates ClusterHealthOK with default headers values
+func NewClusterHealthOK() *ClusterHealthOK {
+
+	return &ClusterHealthOK{}
+}
+
+// WithPayload adds the payload to the cluster health o k response
+func (o *ClusterHealthOK) WithPayload(payload *models.ClusterHealthResults) *ClusterHealthOK {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the cluster health o k response
+func (o *ClusterHealthOK) SetPayload(payload *models.ClusterHealthResults) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *ClusterHealthOK) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
+
+	rw.WriteHeader(200)
+	if o.Payload != nil {
+		payload := o.Payload
+		if err := producer.Produce(rw, payload); err != nil {
+			panic(err) // let the recovery middleware deal with this
+		}
+	}
+}
+
+// ClusterHealthIMATeapotCode is the HTTP code returned for type ClusterHealthIMATeapot
+const ClusterHealthIMATeapotCode int = 418
+
+/*ClusterHealthIMATeapot Unhealthy cluster
+
+swagger:response clusterHealthIMATeapot
+*/
+type ClusterHealthIMATeapot struct {
+
+	/*
+	  In: Body
+	*/
+	Payload *models.ClusterHealthResults `json:"body,omitempty"`
+}
+
+// NewClusterHealthIMATeapot creates ClusterHealthIMATeapot with default headers values
+func NewClusterHealthIMATeapot() *ClusterHealthIMATeapot {
+
+	return &ClusterHealthIMATeapot{}
+}
+
+// WithPayload adds the payload to the cluster health i m a teapot response
+func (o *ClusterHealthIMATeapot) WithPayload(payload *models.ClusterHealthResults) *ClusterHealthIMATeapot {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the cluster health i m a teapot response
+func (o *ClusterHealthIMATeapot) SetPayload(payload *models.ClusterHealthResults) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *ClusterHealthIMATeapot) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
+
+	rw.WriteHeader(418)
+	if o.Payload != nil {
+		payload := o.Payload
+		if err := producer.Produce(rw, payload); err != nil {
+			panic(err) // let the recovery middleware deal with this
+		}
+	}
+}

pkg/restapi/operations/cluster_health_urlbuilder.go

@@ -0,0 +1,84 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the generate command
+
+import (
+	"errors"
+	"net/url"
+	golangswaggerpaths "path"
+)
+
+// ClusterHealthURL generates an URL for the cluster health operation
+type ClusterHealthURL struct {
+	_basePath string
+}
+
+// WithBasePath sets the base path for this url builder, only required when it's different from the
+// base path specified in the swagger spec.
+// When the value of the base path is an empty string
+func (o *ClusterHealthURL) WithBasePath(bp string) *ClusterHealthURL {
+	o.SetBasePath(bp)
+	return o
+}
+
+// SetBasePath sets the base path for this url builder, only required when it's different from the
+// base path specified in the swagger spec.
+// When the value of the base path is an empty string
+func (o *ClusterHealthURL) SetBasePath(bp string) {
+	o._basePath = bp
+}
+
+// Build a url path and query string
+func (o *ClusterHealthURL) Build() (*url.URL, error) {
+	var _result url.URL
+
+	var _path = "/cluster_health"
+
+	_basePath := o._basePath
+	_result.Path = golangswaggerpaths.Join(_basePath, _path)
+
+	return &_result, nil
+}
+
+// Must is a helper function to panic when the url builder returns an error
+func (o *ClusterHealthURL) Must(u *url.URL, err error) *url.URL {
+	if err != nil {
+		panic(err)
+	}
+	if u == nil {
+		panic("url can't be nil")
+	}
+	return u
+}
+
+// String returns the string representation of the path with query string
+func (o *ClusterHealthURL) String() string {
+	return o.Must(o.Build()).String()
+}
+
+// BuildFull builds a full url with scheme, host, path and query string
+func (o *ClusterHealthURL) BuildFull(scheme, host string) (*url.URL, error) {
+	if scheme == "" {
+		return nil, errors.New("scheme is required for a full url on ClusterHealthURL")
+	}
+	if host == "" {
+		return nil, errors.New("host is required for a full url on ClusterHealthURL")
+	}
+
+	base, err := o.Build()
+	if err != nil {
+		return nil, err
+	}
+
+	base.Scheme = scheme
+	base.Host = host
+	return base, nil
+}
+
+// StringFull returns the string representation of a complete url
+func (o *ClusterHealthURL) StringFull(scheme, host string) string {
+	return o.Must(o.BuildFull(scheme, host)).String()
+}

pkg/restapi/operations/goldpinger_api.go

@@ -10,13 +10,13 @@ import (
 	"net/http"
 	"strings"
 
-	errors "github.com/go-openapi/errors"
-	loads "github.com/go-openapi/loads"
-	runtime "github.com/go-openapi/runtime"
-	middleware "github.com/go-openapi/runtime/middleware"
-	security "github.com/go-openapi/runtime/security"
-	spec "github.com/go-openapi/spec"
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/loads"
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/security"
+	"github.com/go-openapi/spec"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 )
 
@@ -29,20 +29,28 @@ func NewGoldpingerAPI(spec *loads.Document) *GoldpingerAPI {
 		defaultProduces:     "application/json",
 		customConsumers:     make(map[string]runtime.Consumer),
 		customProducers:     make(map[string]runtime.Producer),
+		PreServerShutdown:   func() {},
 		ServerShutdown:      func() {},
 		spec:                spec,
+		useSwaggerUI:        false,
 		ServeError:          errors.ServeError,
 		BasicAuthenticator:  security.BasicAuth,
 		APIKeyAuthenticator: security.APIKeyAuth,
 		BearerAuthenticator: security.BearerAuth,
-		JSONConsumer:        runtime.JSONConsumer(),
-		JSONProducer:        runtime.JSONProducer(),
+
+		JSONConsumer: runtime.JSONConsumer(),
+
+		JSONProducer: runtime.JSONProducer(),
+
 		CheckAllPodsHandler: CheckAllPodsHandlerFunc(func(params CheckAllPodsParams) middleware.Responder {
 			return middleware.NotImplemented("operation CheckAllPods has not yet been implemented")
 		}),
 		CheckServicePodsHandler: CheckServicePodsHandlerFunc(func(params CheckServicePodsParams) middleware.Responder {
 			return middleware.NotImplemented("operation CheckServicePods has not yet been implemented")
 		}),
+		ClusterHealthHandler: ClusterHealthHandlerFunc(func(params ClusterHealthParams) middleware.Responder {
+			return middleware.NotImplemented("operation ClusterHealth has not yet been implemented")
+		}),
 		HealthzHandler: HealthzHandlerFunc(func(params HealthzParams) middleware.Responder {
 			return middleware.NotImplemented("operation Healthz has not yet been implemented")
 		}),
@@ -63,27 +71,34 @@ type GoldpingerAPI struct {
 	defaultConsumes string
 	defaultProduces string
 	Middleware      func(middleware.Builder) http.Handler
+	useSwaggerUI    bool
 
 	// BasicAuthenticator generates a runtime.Authenticator from the supplied basic auth function.
 	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	BasicAuthenticator func(security.UserPassAuthentication) runtime.Authenticator
+
 	// APIKeyAuthenticator generates a runtime.Authenticator from the supplied token auth function.
 	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	APIKeyAuthenticator func(string, string, security.TokenAuthentication) runtime.Authenticator
+
 	// BearerAuthenticator generates a runtime.Authenticator from the supplied bearer token auth function.
 	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	BearerAuthenticator func(string, security.ScopedTokenAuthentication) runtime.Authenticator
 
-	// JSONConsumer registers a consumer for a "application/json" mime type
+	// JSONConsumer registers a consumer for the following mime types:
+	//   - application/json
 	JSONConsumer runtime.Consumer
 
-	// JSONProducer registers a producer for a "application/json" mime type
+	// JSONProducer registers a producer for the following mime types:
+	//   - application/json
 	JSONProducer runtime.Producer
 
 	// CheckAllPodsHandler sets the operation handler for the check all pods operation
 	CheckAllPodsHandler CheckAllPodsHandler
 	// CheckServicePodsHandler sets the operation handler for the check service pods operation
 	CheckServicePodsHandler CheckServicePodsHandler
+	// ClusterHealthHandler sets the operation handler for the cluster health operation
+	ClusterHealthHandler ClusterHealthHandler
 	// HealthzHandler sets the operation handler for the healthz operation
 	HealthzHandler HealthzHandler
 	// PingHandler sets the operation handler for the ping operation
@@ -93,6 +108,10 @@ type GoldpingerAPI struct {
 	// but you can set your own with this
 	ServeError func(http.ResponseWriter, *http.Request, error)
 
+	// PreServerShutdown is called before the HTTP(S) server is shutdown
+	// This allows for custom functions to get executed before the HTTP(S) server stops accepting traffic
+	PreServerShutdown func()
+
 	// ServerShutdown is called when the HTTP(S) server is shut down and done
 	// handling all active connections and does not accept connections any more
 	ServerShutdown func()
@@ -104,6 +123,16 @@ type GoldpingerAPI struct {
 	Logger func(string, ...interface{})
 }
 
+// UseRedoc for documentation at /docs
+func (o *GoldpingerAPI) UseRedoc() {
+	o.useSwaggerUI = false
+}
+
+// UseSwaggerUI for documentation at /docs
+func (o *GoldpingerAPI) UseSwaggerUI() {
+	o.useSwaggerUI = true
+}
+
 // SetDefaultProduces sets the default produces media type
 func (o *GoldpingerAPI) SetDefaultProduces(mediaType string) {
 	o.defaultProduces = mediaType
@@ -154,15 +183,15 @@ func (o *GoldpingerAPI) Validate() error {
 	if o.CheckAllPodsHandler == nil {
 		unregistered = append(unregistered, "CheckAllPodsHandler")
 	}
-
 	if o.CheckServicePodsHandler == nil {
 		unregistered = append(unregistered, "CheckServicePodsHandler")
 	}
-
+	if o.ClusterHealthHandler == nil {
+		unregistered = append(unregistered, "ClusterHealthHandler")
+	}
 	if o.HealthzHandler == nil {
 		unregistered = append(unregistered, "HealthzHandler")
 	}
-
 	if o.PingHandler == nil {
 		unregistered = append(unregistered, "PingHandler")
 	}
@@ -181,28 +210,22 @@ func (o *GoldpingerAPI) ServeErrorFor(operationID string) func(http.ResponseWrit
 
 // AuthenticatorsFor gets the authenticators for the specified security schemes
 func (o *GoldpingerAPI) AuthenticatorsFor(schemes map[string]spec.SecurityScheme) map[string]runtime.Authenticator {
-
 	return nil
-
 }
 
 // Authorizer returns the registered authorizer
 func (o *GoldpingerAPI) Authorizer() runtime.Authorizer {
-
 	return nil
-
 }
 
-// ConsumersFor gets the consumers for the specified media types
+// ConsumersFor gets the consumers for the specified media types.
+// MIME type parameters are ignored here.
 func (o *GoldpingerAPI) ConsumersFor(mediaTypes []string) map[string]runtime.Consumer {
-
-	result := make(map[string]runtime.Consumer)
+	result := make(map[string]runtime.Consumer, len(mediaTypes))
 	for _, mt := range mediaTypes {
 		switch mt {
-
 		case "application/json":
 			result["application/json"] = o.JSONConsumer
-
 		}
 
 		if c, ok := o.customConsumers[mt]; ok {
@@ -210,19 +233,16 @@ func (o *GoldpingerAPI) ConsumersFor(mediaTypes []string) map[string]runtime.Con
 		}
 	}
 	return result
-
 }
 
-// ProducersFor gets the producers for the specified media types
+// ProducersFor gets the producers for the specified media types.
+// MIME type parameters are ignored here.
 func (o *GoldpingerAPI) ProducersFor(mediaTypes []string) map[string]runtime.Producer {
-
-	result := make(map[string]runtime.Producer)
+	result := make(map[string]runtime.Producer, len(mediaTypes))
 	for _, mt := range mediaTypes {
 		switch mt {
-
 		case "application/json":
 			result["application/json"] = o.JSONProducer
-
 		}
 
 		if p, ok := o.customProducers[mt]; ok {
@@ -230,7 +250,6 @@ func (o *GoldpingerAPI) ProducersFor(mediaTypes []string) map[string]runtime.Pro
 		}
 	}
 	return result
-
 }
 
 // HandlerFor gets a http.Handler for the provided operation method and path
@@ -260,7 +279,6 @@ func (o *GoldpingerAPI) Context() *middleware.Context {
 
 func (o *GoldpingerAPI) initHandlerCache() {
 	o.Context() // don't care about the result, just that the initialization happened
-
 	if o.handlers == nil {
 		o.handlers = make(map[string]map[string]http.Handler)
 	}
@@ -269,22 +287,22 @@ func (o *GoldpingerAPI) initHandlerCache() {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
 	o.handlers["GET"]["/check_all"] = NewCheckAllPods(o.context, o.CheckAllPodsHandler)
-
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
 	o.handlers["GET"]["/check"] = NewCheckServicePods(o.context, o.CheckServicePodsHandler)
-
+	if o.handlers["GET"] == nil {
+		o.handlers["GET"] = make(map[string]http.Handler)
+	}
+	o.handlers["GET"]["/cluster_health"] = NewClusterHealth(o.context, o.ClusterHealthHandler)
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
 	o.handlers["GET"]["/healthz"] = NewHealthz(o.context, o.HealthzHandler)
-
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
 	o.handlers["GET"]["/ping"] = NewPing(o.context, o.PingHandler)
-
 }
 
 // Serve creates a http handler to serve the API over HTTP
@@ -295,6 +313,9 @@ func (o *GoldpingerAPI) Serve(builder middleware.Builder) http.Handler {
 	if o.Middleware != nil {
 		return o.Middleware(builder)
 	}
+	if o.useSwaggerUI {
+		return o.context.APIHandlerSwaggerUI(builder)
+	}
 	return o.context.APIHandler(builder)
 }
 
@@ -314,3 +335,15 @@ func (o *GoldpingerAPI) RegisterConsumer(mediaType string, consumer runtime.Cons
 func (o *GoldpingerAPI) RegisterProducer(mediaType string, producer runtime.Producer) {
 	o.customProducers[mediaType] = producer
 }
+
+// AddMiddlewareFor adds a http middleware to existing handler
+func (o *GoldpingerAPI) AddMiddlewareFor(method, path string, builder middleware.Builder) {
+	um := strings.ToUpper(method)
+	if path == "/" {
+		path = ""
+	}
+	o.Init()
+	if h, ok := o.handlers[um][path]; ok {
+		o.handlers[method][path] = builder(h)
+	}
+}

pkg/restapi/operations/healthz.go

@@ -8,7 +8,7 @@ package operations
 import (
 	"net/http"
 
-	middleware "github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/middleware"
 )
 
 // HealthzHandlerFunc turns a function with the right signature into a healthz handler
@@ -29,7 +29,7 @@ func NewHealthz(ctx *middleware.Context, handler HealthzHandler) *Healthz {
 	return &Healthz{Context: ctx, Handler: handler}
 }
 
-/*Healthz swagger:route GET /healthz healthz
+/* Healthz swagger:route GET /healthz healthz
 
 The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.
 
@@ -42,17 +42,15 @@ type Healthz struct {
 func (o *Healthz) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
 	route, rCtx, _ := o.Context.RouteInfo(r)
 	if rCtx != nil {
-		r = rCtx
+		*r = *rCtx
 	}
 	var Params = NewHealthzParams()
-
 	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
 		o.Context.Respond(rw, r, route.Produces, route, err)
 		return
 	}
 
 	res := o.Handler.Handle(Params) // actually handle the request
-
 	o.Context.Respond(rw, r, route.Produces, route, res)
 
 }

pkg/restapi/operations/healthz_parameters.go

@@ -13,7 +13,8 @@ import (
 )
 
 // NewHealthzParams creates a new HealthzParams object
-// no default values defined in spec.
+//
+// There are no default values defined in the spec.
 func NewHealthzParams() HealthzParams {
 
 	return HealthzParams{}

pkg/restapi/operations/healthz_responses.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/go-openapi/runtime"
 
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // HealthzOKCode is the HTTP code returned for type HealthzOK

pkg/restapi/operations/ping.go

@@ -8,7 +8,7 @@ package operations
 import (
 	"net/http"
 
-	middleware "github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/middleware"
 )
 
 // PingHandlerFunc turns a function with the right signature into a ping handler
@@ -29,7 +29,7 @@ func NewPing(ctx *middleware.Context, handler PingHandler) *Ping {
 	return &Ping{Context: ctx, Handler: handler}
 }
 
-/*Ping swagger:route GET /ping ping
+/* Ping swagger:route GET /ping ping
 
 return query stats
 
@@ -42,17 +42,15 @@ type Ping struct {
 func (o *Ping) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
 	route, rCtx, _ := o.Context.RouteInfo(r)
 	if rCtx != nil {
-		r = rCtx
+		*r = *rCtx
 	}
 	var Params = NewPingParams()
-
 	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
 		o.Context.Respond(rw, r, route.Produces, route, err)
 		return
 	}
 
 	res := o.Handler.Handle(Params) // actually handle the request
-
 	o.Context.Respond(rw, r, route.Produces, route, res)
 
 }

pkg/restapi/operations/ping_parameters.go

@@ -13,7 +13,8 @@ import (
 )
 
 // NewPingParams creates a new PingParams object
-// no default values defined in spec.
+//
+// There are no default values defined in the spec.
 func NewPingParams() PingParams {
 
 	return PingParams{}

pkg/restapi/operations/ping_responses.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/go-openapi/runtime"
 
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // PingOKCode is the HTTP code returned for type PingOK

pkg/restapi/server.go

@@ -25,7 +25,7 @@ import (
 	flags "github.com/jessevdk/go-flags"
 	"golang.org/x/net/netutil"
 
-	"github.com/bloomberg/goldpinger/pkg/restapi/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/restapi/operations"
 )
 
 const (
@@ -133,7 +133,6 @@ func (s *Server) SetAPI(api *operations.GoldpingerAPI) {
 	}
 
 	s.api = api
-	s.api.Logger = log.Printf
 	s.handler = configureAPI(api)
 }
 
@@ -174,8 +173,6 @@ func (s *Server) Serve() (err error) {
 	go handleInterrupt(once, s)
 
 	servers := []*http.Server{}
-	wg.Add(1)
-	go s.handleShutdown(wg, &servers)
 
 	if s.hasScheme(schemeUnix) {
 		domainSocket := new(http.Server)
@@ -252,7 +249,7 @@ func (s *Server) Serve() (err error) {
 			// https://github.com/golang/go/tree/master/src/crypto/elliptic
 			CurvePreferences: []tls.CurveID{tls.CurveP256},
 			// Use modern tls mode https://wiki.mozilla.org/Security/Server_Side_TLS#Modern_compatibility
-			NextProtos: []string{"http/1.1", "h2"},
+			NextProtos: []string{"h2", "http/1.1"},
 			// https://www.owasp.org/index.php/Transport_Layer_Protection_Cheat_Sheet#Rule_-_Only_Support_Strong_Protocols
 			MinVersion: tls.VersionTLS12,
 			// These ciphersuites support Forward Secrecy: https://en.wikipedia.org/wiki/Forward_secrecy
@@ -293,7 +290,7 @@ func (s *Server) Serve() (err error) {
 		// call custom TLS configurator
 		configureTLS(httpsServer.TLSConfig)
 
-		if len(httpsServer.TLSConfig.Certificates) == 0 {
+		if len(httpsServer.TLSConfig.Certificates) == 0 && httpsServer.TLSConfig.GetCertificate == nil {
 			// after standard and custom config are passed, this ends up with no certificate
 			if s.TLSCertificate == "" {
 				if s.TLSCertificateKey == "" {
@@ -308,9 +305,6 @@ func (s *Server) Serve() (err error) {
 			s.Fatalf("no certificate was configured for TLS")
 		}
 
-		// must have at least one certificate or panics
-		httpsServer.TLSConfig.BuildNameToCertificate()
-
 		configureServer(httpsServer, "https", s.httpsServerL.Addr().String())
 
 		servers = append(servers, httpsServer)
@@ -325,6 +319,9 @@ func (s *Server) Serve() (err error) {
 		}(tls.NewListener(s.httpsServerL, httpsServer.TLSConfig))
 	}
 
+	wg.Add(1)
+	go s.handleShutdown(wg, &servers)
+
 	wg.Wait()
 	return nil
 }
@@ -420,6 +417,9 @@ func (s *Server) handleShutdown(wg *sync.WaitGroup, serversPtr *[]*http.Server)
 	ctx, cancel := context.WithTimeout(context.TODO(), s.GracefulTimeout)
 	defer cancel()
 
+	// first execute the pre-shutdown hook
+	s.api.PreServerShutdown()
+
 	shutdownChan := make(chan bool)
 	for i := range servers {
 		server := servers[i]
@@ -489,7 +489,7 @@ func (s *Server) TLSListener() (net.Listener, error) {
 
 func handleInterrupt(once *sync.Once, s *Server) {
 	once.Do(func() {
-		for _ = range s.interrupt {
+		for range s.interrupt {
 			if s.interrupted {
 				s.Logf("Server already shutting down")
 				continue

static/index.html

@@ -213,6 +213,7 @@ var loadingDialog = function(enable){
 var global_data = undefined;
 var s; // the sigma graph
 
+
 var main = function(timeout){
 
         timeout = timeout || Number($("#timeout").val()) || 5.0;
@@ -229,7 +230,6 @@ var main = function(timeout){
 
                 // prepare nodes
                 var nodes = [];
-                var dnsCheckNodes = [];
                 var podIPs = [];
                 var resp = data.responses;
                 for (let podIP in resp) {
@@ -248,15 +248,19 @@ var main = function(timeout){
                 var edges = [];
                 var resp = data.responses;
                 for (let callId in resp) {
-                        var call = resp[callId].response['podResults'];
-                        if (typeof call !== 'string'){
-                                for (let target in call) {
-                                        edges.push({
-                                                source: callId,
-                                                target: target,
-                                                _data: call[target]
-                                        });
-                                };
+                        // If there was an error, the response can be undefined,
+                        // especially if there was a timeout/context exceeded
+                        if (resp[callId].response !== undefined) {
+                                var call = resp[callId].response['podResults'];
+                                if (typeof call !== 'string'){
+                                        for (let target in call) {
+                                                edges.push({
+                                                        source: callId,
+                                                        target: target,
+                                                        _data: call[target]
+                                                });
+                                        };
+                                }
                         }
                 };
 
@@ -280,39 +284,44 @@ var main = function(timeout){
                         })
                 })
                 console.log(nodes);
-
-                if ('dnsResults' in data) {
-                    var yoffset = 0;
-                    for (let checkedHost in data.dnsResults) {
-                        let value = data.dnsResults[checkedHost];
-                        var allOk = true;
-                        for (let pod in value) {
-                            var podData = value[pod];
-                            var elapsed = 0;
-                            if ('response-time-ms' in podData) {
-                                elapsed = podData['response-time-ms'];
-                            }
-                            var podOk = (!('error' in podData));
-                            allOk = allOk && podOk
-                            edges.push({
-                                source: pod,
-                                target: checkedHost,
-                                _data: {
+                 
+                var probeResultsNodes = [];
+                if ('probeResults' in data) {
+                  var yoffset = 0;
+                  for (let checkedHost in data.probeResults) {
+                      let  value = data.probeResults[checkedHost];
+                      var allOk = true;
+                      for (let pod in value) {
+                          for (var i = 0; i < value[pod].length; i++){
+                                var elapsed = 0;
+                                var podData = value[pod][i];
+                                if ('response-time-ms' in podData) {
+                                        elapsed = podData['response-time-ms'];
+                                }
+                                var podOk = (!('error' in podData));
+                                allOk = allOk && podOk
+                                edges.push({
+                                  source: pod,
+                                  target: checkedHost,
+                                  _data: {
                                     "OK": podOk,
                                     "elapsed": elapsed,
-                                    "isDNSCheckNode": true,
-                                }
-                            });
+                                    "isprobeResultsNode": true,
+                                  }
+                                });              
+                          } 
                         }
+
                         value["OK"] = allOk
-                        dnsCheckNodes.push({
-                            "label": checkedHost,
-                            "id": checkedHost,
-                            "x": 0,
-                            "y": 0,
-                            _data: value,
-                        });
-                    }
+                        probeResultsNodes.push({
+                                "label": checkedHost,
+                                "id": checkedHost,
+                                "x": 0,
+                                "y": 0,
+                                _data: value,
+                         });
+           
+                  } 
                 }
 
                 // build the actual graph
@@ -347,7 +356,7 @@ var main = function(timeout){
                 });
 
                 // generate any dns nodes on the graph
-                dnsCheckNodes.forEach(function(node, i, a){
+                probeResultsNodes.forEach(function(node, i, a){
                         node.x = 2;
                         node.y = (0.6 * i / a.length) - 0.8;
                         node.size = 10;
@@ -355,7 +364,6 @@ var main = function(timeout){
                         if (!node._data.OK) {
                                 node.color = "red";
                         }
-                        //console.log(node);
                         s.graph.addNode(node);
                 });
 
@@ -370,7 +378,7 @@ var main = function(timeout){
                         if (!edge._data.OK) {
                                 color = "red";
                         }
-                        if ("isDNSCheckNode" in edge._data) {
+                        if ("isprobeResultsNode" in edge._data) {
                                 type = "dashed";
                         }
                         var edge = {
@@ -480,6 +488,3 @@ $("#update-heatmap").click(function (e) {
 </script>
 </body>
 </html>
-
-
-

swagger.yml

@@ -1,8 +1,8 @@
 ---
 swagger: '2.0'
 info:
-  version: 2.0.0
-  title: Goldpinger 
+  version: 3.0.0
+  title: Goldpinger
 definitions:
   CallStats:
     properties:
@@ -12,17 +12,21 @@ definitions:
         type: integer
       ping:
         type: integer
-  DnsResult:
+  ProbeResult:
     properties:
       response-time-ms:
         type: number
         format: int64
       error:
         type: string
-  DnsResults:
+      protocol:
+        type: string
+  ProbeResults:
     type: object
     additionalProperties:
-      $ref: '#/definitions/DnsResult'
+      type: array
+      items:
+        $ref: '#/definitions/ProbeResult' 
   PingResults:
     type: object
     properties:
@@ -37,6 +41,12 @@ definitions:
       OK:
         type: boolean
         default: false
+      PingTime:
+        format: date-time
+        type: string
+      PodIP:
+        type: string
+        format: ipv4
       HostIP:
         type: string
         format: ipv4
@@ -54,8 +64,8 @@ definitions:
   CheckResults:
     type: object
     properties:
-      dnsResults:
-        $ref: '#/definitions/DnsResults'
+      probeResults:
+        $ref: '#/definitions/ProbeResults'    
       podResults:
         type: object
         additionalProperties:
@@ -66,6 +76,9 @@ definitions:
       OK:
         type: boolean
         default: false
+      PodIP:
+        type: string
+        format: ipv4
       HostIP:
         type: string
         format: ipv4
@@ -83,26 +96,28 @@ definitions:
         type: boolean
         default: false
       hosts-healthy:
-        type: integer 
+        type: integer
         format: int32
       hosts-number:
-        type: integer 
+        type: integer
         format: int32
       hosts:
         type: array
         items:
           type: object
           properties:
+            podName:
+              type: string
             hostIP:
               type: string
               format: ipv4
             podIP:
               type: string
               format: ipv4
-      dnsResults:
+      probeResults:
         type: object
         additionalProperties:
-          $ref: '#/definitions/DnsResults'
+          $ref: '#/definitions/ProbeResults'       
       responses:
         type: object
         additionalProperties:
@@ -119,13 +134,38 @@ definitions:
       duration-ns:
         type: integer
         format: int64
+  ClusterHealthResults:
+    type: object
+    properties:
+      OK:
+        type: boolean
+        default: false
+      nodesHealthy:
+        type: array
+        items:
+          type: string
+      nodesUnhealthy:
+        type: array
+        items:
+          type: string
+      nodesTotal:
+        type: integer
+        format: int64
+      generated-at:
+        type: string
+        format: date-time
+      duration-ns:
+        type: integer
+        format: int64
+    required:
+    - OK
 paths:
   /ping:
     get:
       description: return query stats
       produces:
-        - application/json 
-      operationId: ping 
+        - application/json
+      operationId: ping
       responses:
         200:
           description: return success
@@ -136,11 +176,11 @@ paths:
       description: Queries the API server for all other pods in this service,
                    and pings them via their pods IPs. Calls their /ping endpoint
       produces:
-        - application/json 
-      operationId: checkServicePods 
+        - application/json
+      operationId: checkServicePods
       responses:
         200:
-          description: Success, return response 
+          description: Success, return response
           schema:
             $ref: '#/definitions/CheckResults'
   /check_all:
@@ -149,13 +189,28 @@ paths:
                    and makes all of them query all of their neighbours,
                    using their pods IPs. Calls their /check endpoint.
       produces:
-        - application/json 
-      operationId: checkAllPods 
+        - application/json
+      operationId: checkAllPods
       responses:
         200:
-          description: Success, return response 
+          description: Success, return response
           schema:
             $ref: '#/definitions/CheckAllResults'
+  /cluster_health:
+    get:
+      description: Checks the full graph. Returns a binary OK or not OK.
+      produces:
+        - application/json
+      operationId: clusterHealth
+      responses:
+        200:
+          description: Healthy cluster
+          schema:
+            $ref: '#/definitions/ClusterHealthResults'
+        418:
+          description: Unhealthy cluster
+          schema:
+            $ref: '#/definitions/ClusterHealthResults'
   /healthz:
     get:
       description:  The healthcheck endpoint provides detailed information about