Merge pull request #103 from stefanprodan/release-v5.0.3

Release v5.0.3

.circleci/config.yml

@@ -1,112 +0,0 @@
-version: 2.1
-jobs:
-  e2e-kubernetes:
-    machine: true
-    steps:
-      - checkout
-      - run:
-          name: Build podinfo container
-          command: e2e/build.sh
-      - run:
-          name: Start Kubernetes Kind cluster
-          command: e2e/bootstrap.sh
-      - run:
-          name: Install podinfo with Helm v3
-          command: e2e/install.sh
-      - run:
-          name: Run Helm tests
-          command: e2e/test.sh
-
-  push-container:
-    docker:
-      - image: circleci/golang:1.14
-    working_directory: ~/build
-    steps:
-      - checkout
-      - setup_remote_docker:
-          docker_layer_caching: false
-      - run: make build-container
-      - run: |
-          if [ -z "$CIRCLE_TAG" ]; then
-            echo "Not a release, skipping container push";
-          else
-            echo $DOCKER_PASS | docker login -u $DOCKER_USER --password-stdin;
-            echo $QUAY_PASS | docker login -u $QUAY_USER --password-stdin quay.io;
-            make push-container;
-          fi
-
-  push-binary:
-    docker:
-      - image: circleci/golang:1.14
-    steps:
-      - checkout
-      - run: curl -sL https://git.io/goreleaser | bash
-
-  push-helm-charts:
-    docker:
-      - image: circleci/golang:1.14
-    steps:
-      - checkout
-      - run:
-          name: Install kubectl
-          command: sudo curl -L https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl && sudo chmod +x /usr/local/bin/kubectl
-      - run:
-          name: Install helm
-          command: sudo curl -L https://storage.googleapis.com/kubernetes-helm/helm-v2.14.2-linux-amd64.tar.gz | tar xz && sudo mv linux-amd64/helm /bin/helm && sudo rm -rf linux-amd64
-      - run:
-          name: Initialize helm
-          command:  helm init --client-only --kubeconfig=$HOME/.kube/kubeconfig
-      - run:
-          name: Lint charts
-          command: |
-            helm lint ./charts/*
-      - run:
-          name: Package charts
-          command: |
-            mkdir $HOME/charts
-            helm package ./charts/* --destination $HOME/charts
-      - run:
-          name: Publish charts
-          command: |
-            if echo "${CIRCLE_TAG}" | grep -Eq "[0-9]+(\.[0-9]+)*(-[a-z]+)?$"; then
-              REPOSITORY="https://stefanprodan:${GITHUB_TOKEN}@github.com/stefanprodan/podinfo.git"
-              git config user.email stefanprodan@users.noreply.github.com
-              git config user.name stefanprodan
-              git remote set-url origin ${REPOSITORY}
-              git checkout gh-pages
-              mv -f $HOME/charts/*.tgz .
-              helm repo index . --url https://stefanprodan.github.io/podinfo
-              git add .
-              git commit -m "Publish Helm charts v${CIRCLE_TAG}"
-              git push origin gh-pages
-            else
-              echo "Not a release! Skip charts publish"
-            fi
-
-workflows:
-  version: 2
-  build-test:
-    jobs:
-      - e2e-kubernetes
-  release:
-    jobs:
-      - push-binary:
-          filters:
-            branches:
-              ignore: /.*/
-            tags:
-              ignore: /^chart.*/
-      - push-container:
-          filters:
-            branches:
-              ignore: /.*/
-            tags:
-              ignore: /^chart.*/
-      - push-helm-charts:
-          requires:
-            - push-container
-          filters:
-            branches:
-              ignore: /.*/
-            tags:
-              ignore: /^chart.*/

.github/actions/helm/Dockerfile

@@ -0,0 +1,6 @@
+FROM stefanprodan/alpine-base:latest
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

.github/actions/helm/action.yml

@@ -0,0 +1,15 @@
+name: 'helm'
+description: 'A GitHub Action to run helm commands'
+author: 'Stefan Prodan'
+branding:
+  icon: 'command'
+  color: 'blue'
+inputs:
+  helm-version:
+    description: Helm version to use
+    required: true
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.helm-version }}

.github/actions/helm/entrypoint.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o pipefail
+
+HELM_VERSION=$1
+BIN_DIR="$GITHUB_WORKSPACE/bin"
+
+main() {
+  mkdir -p ${BIN_DIR}
+  tmpDir=$(mktemp -d)
+
+  pushd $tmpDir >& /dev/null
+
+  curl -sSL https://get.helm.sh/helm-v${HELM_VERSION}-linux-amd64.tar.gz | tar xz
+  cp linux-amd64/helm ${BIN_DIR}/helm
+
+  popd >& /dev/null
+  rm -rf $tmpDir
+}
+
+main
+echo "$GITHUB_WORKSPACE/bin" >> $GITHUB_PATH
+echo "$RUNNER_WORKSPACE/$(basename $GITHUB_REPOSITORY)/bin" >> $GITHUB_PATH

.github/actions/release-notes/Dockerfile

@@ -0,0 +1,6 @@
+FROM stefanprodan/alpine-base:latest
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

.github/actions/release-notes/action.yml

@@ -0,0 +1,9 @@
+name: 'github-release-notes'
+description: 'A GitHub Action to run github-release-notes commands'
+author: 'Stefan Prodan'
+branding:
+  icon: 'command'
+  color: 'blue'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'

.github/actions/release-notes/entrypoint.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o pipefail
+
+VERSION=0.2.0
+BIN_DIR="$GITHUB_WORKSPACE/bin"
+
+main() {
+  mkdir -p ${BIN_DIR}
+  tmpDir=$(mktemp -d)
+
+  pushd $tmpDir >& /dev/null
+
+  curl -sSL https://github.com/buchanae/github-release-notes/releases/download/${VERSION}/github-release-notes-linux-amd64-${VERSION}.tar.gz | tar xz
+  cp github-release-notes ${BIN_DIR}/github-release-notes
+
+  popd >& /dev/null
+  rm -rf $tmpDir
+}
+
+main
+echo "::add-path::$BIN_DIR"
+echo "::add-path::$RUNNER_WORKSPACE/$(basename $GITHUB_REPOSITORY)/bin"

.github/workflows/cve-scan.yml

@@ -0,0 +1,23 @@
+name: cve-scan
+
+on:
+  push:
+    branches:
+      - 'master'
+
+jobs:
+  trivy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Build image
+        id: build
+        run: |
+          IMAGE=test/podinfo:${GITHUB_SHA}
+          docker build -t ${IMAGE} .
+          echo "::set-output name=image::$IMAGE"
+      - name: Scan image
+        uses: docker://docker.io/aquasec/trivy:latest
+        with:
+          args: --cache-dir /var/lib/trivy --no-progress --exit-code 1 --severity MEDIUM,HIGH,CRITICAL ${{ steps.build.outputs.image }}

.github/workflows/e2e.yml

@@ -0,0 +1,50 @@
+name: e2e
+
+on:
+  pull_request:
+  push:
+    branches:
+      - 'master'
+
+jobs:
+  kind-helm:
+    strategy:
+      matrix:
+        helm-version:
+          - 2.16.12
+          - 3.3.4
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Kubernetes
+        uses: engineerd/setup-kind@v0.4.0
+      - name: Build container image
+        run: |
+          GIT_COMMIT=$(git rev-list -1 HEAD) && \
+          docker build -t test/podinfo:latest --build-arg "REVISION=${GIT_COMMIT}" .
+          kind load docker-image test/podinfo:latest
+      - name: Setup Helm
+        uses: ./.github/actions/helm
+        with:
+          helm-version: ${{ matrix.helm-version }}
+      - name: Install Tiller
+        if: ${{ startsWith(matrix.helm-version, '2') }}
+        run: |
+          kubectl --namespace kube-system create sa tiller
+          kubectl create clusterrolebinding tiller-cluster-rule --clusterrole=cluster-admin --serviceaccount=kube-system:tiller
+          helm init --service-account tiller --upgrade --wait
+      - name: Deploy
+        run: |
+          helm upgrade -i podinfo ./charts/podinfo \
+          --set image.repository=test/podinfo \
+          --set image.tag=latest \
+          --namespace=default
+      - name: Run integration tests
+        run: |
+          kubectl rollout status deployment/podinfo --timeout=1m
+          helm test podinfo
+      - name: Debug failure
+        if: failure()
+        run: |
+          kubectl logs -l app=podinfo || true

.github/workflows/release.yml

@@ -0,0 +1,85 @@
+name: release
+
+on:
+  push:
+    tags: '*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v1
+        with:
+          platforms: all
+      - name: Setup Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          buildkitd-flags: "--debug"
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.GHCR_TOKEN }}
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Prepare
+        id: prep
+        run: |
+          VERSION=sha-${GITHUB_SHA::8}
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF/refs\/tags\//}
+          fi
+          echo ::set-output name=BUILD_DATE::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
+          echo ::set-output name=VERSION::${VERSION}
+      - name: Publish multi-arch image
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          builder: ${{ steps.buildx.outputs.name }}
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          tags: |
+            docker.io/stefanprodan/podinfo:${{ steps.prep.outputs.VERSION }}
+            docker.io/stefanprodan/podinfo:latest
+            ghcr.io/stefanprodan/podinfo:${{ steps.prep.outputs.VERSION }}
+          labels: |
+            org.opencontainers.image.title=${{ github.event.repository.name }}
+            org.opencontainers.image.description=${{ github.event.repository.description }}
+            org.opencontainers.image.source=${{ github.event.repository.html_url }}
+            org.opencontainers.image.url=${{ github.event.repository.html_url }}
+            org.opencontainers.image.revision=${{ github.sha }}
+            org.opencontainers.image.version=${{ steps.prep.outputs.VERSION }}
+            org.opencontainers.image.created=${{ steps.prep.outputs.BUILD_DATE }}
+      - name: Publish base image
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          builder: ${{ steps.buildx.outputs.name }}
+          context: .
+          platforms: linux/amd64
+          file: ./Dockerfile.base
+          tags: docker.io/stefanprodan/podinfo-base:latest
+      - name: Publish helm chart
+        uses: stefanprodan/helm-gh-pages@master
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: ./.github/actions/release-notes
+      - name: Generate release notes
+        run: |
+          echo 'CHANGELOG' > /tmp/release.txt
+          github-release-notes -org stefanprodan -repo podinfo -since-latest-release >> /tmp/release.txt
+      - name: Publish release
+        uses: goreleaser/goreleaser-action@v1
+        with:
+          version: latest
+          args: release --release-notes=/tmp/release.txt
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test.yml

@@ -1,17 +1,43 @@
-on: [push, pull_request]
 name: test
+
+on:
+  pull_request:
+  push:
+    branches:
+      - 'master'
+
 jobs:
-  validate:
+  test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
-      - name: kubeval
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Restore Go cache
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: ${{ runner.os }}-go-
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.15.x
+      - name: Run unit tests
+        run: make test
+      - name: Check if working tree is dirty
+        run: |
+          if [[ $(git diff --stat) != '' ]]; then
+            echo 'run make test and commit changes'
+            exit 1
+          fi
+      - name: Validate Helm chart
+        uses: stefanprodan/kube-tools@v1
+        with:
+          command: |
+            helmv3 template ./charts/podinfo | kubeval --strict
+      - name: Validate kustomization
         uses: stefanprodan/kube-tools@v1
         with:
           command: |
             kustomize build ./kustomize | kubeval --strict
-      - name: conftest
-        uses: stefanprodan/kube-tools@v1
-        with:
-          command: |
             kustomize build ./kustomize | conftest test -p .github/policy -

Dockerfile

@@ -1,4 +1,6 @@
-FROM golang:1.14 as builder
+FROM golang:1.15-alpine as builder
+
+ARG REVISION
 
 RUN mkdir -p /podinfo/
 
@@ -8,24 +10,26 @@ COPY . .
 
 RUN go mod download
 
-RUN go test -v -race ./...
-
-RUN GIT_COMMIT=$(git rev-list -1 HEAD) && \
-    CGO_ENABLED=0 GOOS=linux go build -ldflags "-s -w \
-    -X github.com/stefanprodan/podinfo/pkg/version.REVISION=${GIT_COMMIT}" \
+RUN CGO_ENABLED=0 go build -ldflags "-s -w \
+    -X github.com/stefanprodan/podinfo/pkg/version.REVISION=${REVISION}" \
     -a -o bin/podinfo cmd/podinfo/*
 
-RUN GIT_COMMIT=$(git rev-list -1 HEAD) && \
-    CGO_ENABLED=0 GOOS=linux go build -ldflags "-s -w \
-    -X github.com/stefanprodan/podinfo/pkg/version.REVISION=${GIT_COMMIT}" \
+RUN CGO_ENABLED=0 go build -ldflags "-s -w \
+    -X github.com/stefanprodan/podinfo/pkg/version.REVISION=${REVISION}" \
     -a -o bin/podcli cmd/podcli/*
 
-FROM alpine:3.11
+FROM alpine:3.12
+
+ARG BUILD_DATE
+ARG VERSION
+ARG REVISION
+
+LABEL maintainer="stefanprodan"
 
 RUN addgroup -S app \
     && adduser -S -g app app \
     && apk --no-cache add \
-    curl openssl netcat-openbsd
+    ca-certificates curl netcat-openbsd
 
 WORKDIR /home/app
 

Dockerfile.base

@@ -0,0 +1,10 @@
+FROM golang:1.15
+
+WORKDIR /workspace
+
+# copy modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+
+# cache modules
+RUN go mod download

LICENSE

@@ -1,21 +1,201 @@
-MIT License
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
 
-Copyright (c) 2018 Stefan Prodan
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+   1. Definitions.
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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+      including but not limited to software source code, documentation
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+   9. Accepting Warranty or Additional Liability. While redistributing
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+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2018 Stefan Prodan. All rights reserved.
+
+   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.

Makefile

@@ -33,6 +33,12 @@ build-charts:
 build-container:
 	docker build -t $(DOCKER_IMAGE_NAME):$(VERSION) .
 
+build-base:
+	docker build -f Dockerfile.base -t $(DOCKER_REPOSITORY)/podinfo-base:latest .
+
+push-base: build-base
+	docker push $(DOCKER_REPOSITORY)/podinfo-base:latest
+
 test-container:
 	@docker rm -f podinfo || true
 	@docker run -dp 9898:9898 --name=podinfo $(DOCKER_IMAGE_NAME):$(VERSION)
@@ -54,9 +60,14 @@ version-set:
 	current="$(VERSION)" && \
 	sed -i '' "s/$$current/$$next/g" pkg/version/version.go && \
 	sed -i '' "s/tag: $$current/tag: $$next/g" charts/podinfo/values.yaml && \
+	sed -i '' "s/tag: $$current/tag: $$next/g" charts/podinfo/values-prod.yaml && \
 	sed -i '' "s/appVersion: $$current/appVersion: $$next/g" charts/podinfo/Chart.yaml && \
 	sed -i '' "s/version: $$current/version: $$next/g" charts/podinfo/Chart.yaml && \
 	sed -i '' "s/podinfo:$$current/podinfo:$$next/g" kustomize/deployment.yaml && \
+	sed -i '' "s/podinfo:$$current/podinfo:$$next/g" deploy/webapp/frontend/deployment.yaml && \
+	sed -i '' "s/podinfo:$$current/podinfo:$$next/g" deploy/webapp/backend/deployment.yaml && \
+	sed -i '' "s/podinfo:$$current/podinfo:$$next/g" deploy/bases/frontend/deployment.yaml && \
+	sed -i '' "s/podinfo:$$current/podinfo:$$next/g" deploy/bases/backend/deployment.yaml && \
 	echo "Version $$next set in code, deployment, chart and kustomize"
 
 release:

README.md

@@ -1,7 +1,8 @@
 # podinfo
 
-[![CircleCI](https://circleci.com/gh/stefanprodan/podinfo.svg?style=svg)](https://circleci.com/gh/stefanprodan/podinfo)
-[![conftest](https://github.com/stefanprodan/podinfo/workflows/test/badge.svg)](https://github.com/stefanprodan/podinfo/blob/master/.github/workflows/test.yml)
+[![e2e](https://github.com/stefanprodan/podinfo/workflows/e2e/badge.svg)](https://github.com/stefanprodan/podinfo/blob/master/.github/workflows/e2e.yml)
+[![test](https://github.com/stefanprodan/podinfo/workflows/test/badge.svg)](https://github.com/stefanprodan/podinfo/blob/master/.github/workflows/test.yml)
+[![cve-scan](https://github.com/stefanprodan/podinfo/workflows/cve-scan/badge.svg)](https://github.com/stefanprodan/podinfo/blob/master/.github/workflows/cve-scan.yml)
 [![Go Report Card](https://goreportcard.com/badge/github.com/stefanprodan/podinfo)](https://goreportcard.com/report/github.com/stefanprodan/podinfo)
 [![Docker Pulls](https://img.shields.io/docker/pulls/stefanprodan/podinfo)](https://hub.docker.com/r/stefanprodan/podinfo)
 
@@ -22,6 +23,8 @@ Specifications:
 * Helm and Kustomize installers
 * End-to-End testing with Kubernetes Kind and Helm
 * Kustomize testing with GitHub Actions and Open Policy Agent
+* Multi-arch container image with Docker buildx and Github Actions
+* CVE scanning with trivy
 
 Web API:
 
@@ -41,6 +44,9 @@ Web API:
 * `POST /token` issues a JWT token valid for one minute `JWT=$(curl -sd 'anon' podinfo:9898/token | jq -r .token)`
 * `GET /token/validate` validates the JWT token `curl -H "Authorization: Bearer $JWT" podinfo:9898/token/validate`
 * `GET /configs` returns a JSON with configmaps and/or secrets mounted in the `config` volume
+* `POST/PUT /cache/{key}` saves the posted content to Redis
+* `GET /cache/{key}` returns the content from Redis if the key exists
+* `DELETE /cache/{key}` deletes the key from Redis if exists
 * `POST /store` writes the posted content to disk at /data/hash and returns the SHA1 hash of the content
 * `GET /store/{hash}` returns the content of the file /data/hash if exists
 * `GET /ws/echo` echos content via websockets `podcli ws ws://localhost:9898/ws/echo`

charts/ngrok/.helmignore

@@ -1,21 +0,0 @@
-# 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

charts/ngrok/Chart.yaml

@@ -1,5 +0,0 @@
-apiVersion: v1
-appVersion: "1.0"
-description: A Ngrok Helm chart for Kubernetes
-name: ngrok
-version: 0.2.0

charts/ngrok/README.md

@@ -1,64 +0,0 @@
-# Ngrok
-
-Expose Kubernetes service with [Ngrok](https://ngrok.com).
-
-## Installing the Chart
-
-To install the chart with the release name `my-release`:
-
-```console
-$ helm install sp/ngrok --name my-release \
-  --set token=NGROK-TOKEN \
-  --set expose.service=podinfo:9898
-```
-
-The command deploys Ngrok on the Kubernetes cluster in the default namespace.
-The [configuration](#configuration) section lists the parameters that can be configured during installation.
-
-## Uninstalling the Chart
-
-To uninstall/delete the `my-release` deployment:
-
-```console
-$ helm delete --purge my-release
-```
-
-The command removes all the Kubernetes components associated with the chart and deletes the release.
-
-## Configuration
-
-The following tables lists the configurable parameters of the Grafana chart and their default values.
-
-Parameter | Description | Default
---- | --- | ---
-`image.repository` | Image repository | `stefanprodan/ngrok`
-`image.pullPolicy` | Image pull policy | `IfNotPresent`
-`image.tag` | Image tag | `latest`
-`replicaCount` | desired number of pods | `1`
-`tolerations` | List of node taints to tolerate | `[]`
-`affinity` | node/pod affinities | `node`
-`nodeSelector` | node labels for pod assignment | `{}`
-`service.type` | type of service | `ClusterIP`
-`token` | Ngrok auth token | `none`
-`expose.service` | Service address to be exposed as in `service-name:port` | `none`
-`subdomain` | Ngrok subdomain | `none`
-
-Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
-
-```console
-$ helm upgrade --install --wait tunel \
-  --set token=NGROK-TOKEN \
-  --set service.type=NodePort \
-  --set expose.service=podinfo:9898 \
-  sp/ngrok
-```
-
-Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
-
-```console
-$ helm install sp/grafana --name my-release -f values.yaml
-```
-
-> **Tip**: You can use the default [values.yaml](values.yaml)
-```
-

charts/ngrok/templates/NOTES.txt

@@ -1,15 +0,0 @@
-1. Get the application URL by running these commands:
-{{- if contains "NodePort" .Values.service.type }}
-  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "ngrok.fullname" . }})
-  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
-  echo http://$NODE_IP:$NODE_PORT
-{{- else if contains "LoadBalancer" .Values.service.type }}
-     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
-           You can watch the status of by running 'kubectl get svc -w {{ template "ngrok.fullname" . }}'
-  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ template "ngrok.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
-  echo http://$SERVICE_IP:{{ .Values.service.port }}
-{{- else if contains "ClusterIP" .Values.service.type }}
-  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app={{ template "ngrok.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
-  echo "Visit http://127.0.0.1:8080 to use your application"
-  kubectl port-forward $POD_NAME 8080:80
-{{- end }}

charts/ngrok/templates/_helpers.tpl

@@ -1,32 +0,0 @@
-{{/* vim: set filetype=mustache: */}}
-{{/*
-Expand the name of the chart.
-*/}}
-{{- define "ngrok.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 "ngrok.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 "ngrok.chart" -}}
-{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
-{{- end -}}

charts/ngrok/templates/config.yaml

@@ -1,12 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ template "ngrok.fullname" . }}
-data:
-  ngrok.yml: |-
-    web_addr: 0.0.0.0:4040
-    update: false
-    log: stdout
-{{- if .Values.token }}
-    authtoken: {{ .Values.token }}
-{{- end }}

charts/ngrok/templates/deployment.yaml

@@ -1,65 +0,0 @@
-apiVersion: apps/v1beta2
-kind: Deployment
-metadata:
-  name: {{ template "ngrok.fullname" . }}
-  labels:
-    app: {{ template "ngrok.name" . }}
-    chart: {{ template "ngrok.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  replicas: {{ .Values.replicaCount }}
-  selector:
-    matchLabels:
-      app: {{ template "ngrok.name" . }}
-      release: {{ .Release.Name }}
-  template:
-    metadata:
-      labels:
-        app: {{ template "ngrok.name" . }}
-        release: {{ .Release.Name }}
-      annotations:
-        prometheus.io/scrape: 'false'
-    spec:
-      containers:
-        - name: {{ .Chart.Name }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
-          imagePullPolicy: {{ .Values.image.pullPolicy }}
-          command:
-            - ./ngrok
-            - http
-            {{- if .Values.subdomain }}
-            - --subdomain={{ .Values.subdomain }}
-            {{- end }}
-            - {{ .Values.expose.service }}
-          volumeMounts:
-          - name: config
-            mountPath: /home/ngrok/.ngrok2
-          ports:
-            - name: http
-              containerPort: 4040
-              protocol: TCP
-          livenessProbe:
-            httpGet:
-              path: /api/tunnels
-              port: http
-            initialDelaySeconds: 10
-            periodSeconds: 30
-          resources:
-{{ toYaml .Values.resources | indent 12 }}
-    {{- with .Values.nodeSelector }}
-      nodeSelector:
-{{ toYaml . | indent 8 }}
-    {{- end }}
-    {{- with .Values.affinity }}
-      affinity:
-{{ toYaml . | indent 8 }}
-    {{- end }}
-    {{- with .Values.tolerations }}
-      tolerations:
-{{ toYaml . | indent 8 }}
-    {{- end }}
-      volumes:
-      - name: config
-        configMap:
-          name: {{ template "ngrok.fullname" . }}

charts/ngrok/templates/service.yaml

@@ -1,19 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: {{ template "ngrok.fullname" . }}
-  labels:
-    app: {{ template "ngrok.name" . }}
-    chart: {{ template "ngrok.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  type: {{ .Values.service.type }}
-  ports:
-    - port: {{ .Values.service.port }}
-      targetPort: http
-      protocol: TCP
-      name: http
-  selector:
-    app: {{ template "ngrok.name" . }}
-    release: {{ .Release.Name }}

charts/ngrok/values.yaml

@@ -1,27 +0,0 @@
-# Default values for ngrok.
-# This is a YAML-formatted file.
-# Declare variables to be passed into your templates.
-
-replicaCount: 1
-
-image:
-  repository: stefanprodan/ngrok
-  tag: latest
-  pullPolicy: IfNotPresent
-
-service:
-  type: ClusterIP
-  port: 4040
-
-expose:
-  service: ga-podinfo:9898
-
-token: 4i3rDinhLqMHtvez71N9S_38rkS7onwv77VFNZTaUR6
-
-nodeSelector: {}
-
-tolerations: []
-
-affinity: {}
-
-subdomain:

charts/podinfo/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
-version: 3.2.1
-appVersion: 3.2.1
+version: 5.0.3
+appVersion: 5.0.3
 name: podinfo
 engine: gotpl
 description: Podinfo Helm chart for Kubernetes

charts/podinfo/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
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+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
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+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+
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+      may provide additional or different license terms and conditions
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+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2018 Stefan Prodan. All rights reserved.
+
+   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.

charts/podinfo/README.md

@@ -8,8 +8,9 @@ that showcases best practices of running microservices in Kubernetes.
 To install the chart with the release name `my-release`:
 
 ```console
-$ helm repo add sp https://stefanprodan.github.io/podinfo
-$ helm upgrade my-release --install sp/podinfo 
+$ helm repo add podinfo https://stefanprodan.github.io/podinfo
+
+$ helm upgrade -i my-release podinfo/podinfo 
 ```
 
 The command deploys podinfo on the Kubernetes cluster in the default namespace.
@@ -20,7 +21,7 @@ The [configuration](#configuration) section lists the parameters that can be con
 To uninstall/delete the `my-release` deployment:
 
 ```console
-$ helm delete --purge my-release
+$ helm delete my-release
 ```
 
 The command removes all the Kubernetes components associated with the chart and deletes the release.
@@ -29,60 +30,88 @@ The command removes all the Kubernetes components associated with the chart and
 
 The following tables lists the configurable parameters of the podinfo chart and their default values.
 
-Parameter | Description | Default
+Parameter | Default | Description
 --- | --- | ---
-`affinity` | node/pod affinities | None
-`backend` | echo backend URL | None
-`backends` | echo backend URL array | None
-`faults.delay` | random HTTP response delays between 0 and 5 seconds | `false`
-`faults.error` | 1/3 chances of a random HTTP response error | `false`
-`faults.unhealthy` | when set, the healthy state is never reached | `false`
-`faults.unready` | when set, the ready state is never reached | `false`
-`hpa.enabled` | enables HPA | `false`
-`hpa.cpu` | target CPU usage per pod | None
-`hpa.memory` | target memory usage per pod | None
-`hpa.requests` | target requests per second per pod | None
-`hpa.maxReplicas` | maximum pod replicas | `10`
-`image.pullPolicy` | image pull policy | `IfNotPresent`
-`image.repository` | image repository | `stefanprodan/podinfo`
-`image.tag` | image tag | `<VERSION>`
-`ingress.enabled` | enables ingress | `false`
-`ingress.annotations` | ingress annotations | None
-`ingress.hosts` | ingress accepted hostnames | None
-`ingress.tls` | ingress TLS configuration | None
-`message` | UI greetings message | None
-`nodeSelector` | node labels for pod assignment | `{}`
-`replicaCount` | desired number of pods | `2`
-`resources.requests/cpu` | pod CPU request | `1m`
-`resources.requests/memory` | pod memory request | `16Mi`
-`resources.limits/cpu` | pod CPU limit | None
-`resources.limits/memory` | pod memory limit | None
-`service.enabled` | create Kubernetes service (should be disabled when using Flagger) | `true`
-`service.metricsPort` | Prometheus metrics endpoint port | `9797`
-`service.externalPort` | ClusterIP HTTP port | `9898`
-`service.httpPort` | container HTTP port | `9898`
-`service.nodePort` | NodePort for the HTTP endpoint | `31198`
-`service.grpcPort` | ClusterIP gPRC port | `9999`
-`service.grpcService` | gPRC service name | `podinfo`
-`service.type` | type of service | `ClusterIP`
-`tolerations` | list of node taints to tolerate | `[]`
-`serviceAccount.enabled` | specifies whether a service account should be created | `false`
-`serviceAccount.name` | the name of the service account to use, if not set and create is true, a name is generated using the fullname template | None
-`linkerd.profile.enabled` | create Linkerd service profile | `false`
+`replicaCount` | `1` | Desired number of pods
+`logLevel` | `info` | Log level: `debug`, `info`, `warn`, `error`, `flat` or `panic`
+`backend` | `None` | Echo backend URL
+`backends` | `[]` | Array of echo backend URLs
+`cache` | `None` | Redis address in the format `<host>:<port>`
+`redis.enabled` | `false` | Create Redis deployment for caching purposes
+`ui.color` | `#34577c` |  UI color
+`ui.message` | `None` |  UI greetings message
+`ui.logo` | `None` |  UI logo
+`faults.delay` | `false` | Random HTTP response delays between 0 and 5 seconds
+`faults.error` | `false` | 1/3 chances of a random HTTP response error
+`faults.unhealthy` | `false` | When set, the healthy state is never reached
+`faults.unready` | `false` | When set, the ready state is never reached
+`faults.testFail` | `false` | When set, a helm test is included which always fails
+`faults.testTimeout` | `false` | When set, a helm test is included which always times out
+`h2c.enabled` | `false` | Allow upgrading to h2c
+`image.repository` | `stefanprodan/podinfo` | Image repository
+`image.tag` | `<VERSION>` | Image tag
+`image.pullPolicy` | `IfNotPresent` | Image pull policy
+`service.enabled` | `true` | Create a Kubernetes Service, should be disabled when using [Flagger](https://flagger.app)
+`service.type` | `ClusterIP` | Type of the Kubernetes Service
+`service.metricsPort` | `9797` | Prometheus metrics endpoint port
+`service.httpPort` | `9898` | Container HTTP port
+`service.externalPort` | `9898` | ClusterIP HTTP port
+`service.grpcPort` | `9999` | ClusterIP gPRC port
+`service.grpcService` | `podinfo` | gPRC service name
+`service.nodePort` | `31198` | NodePort for the HTTP endpoint
+`hpa.enabled` | `false` | Enables the Kubernetes HPA
+`hpa.maxReplicas` | `10` | Maximum amount of pods
+`hpa.cpu` | `None` | Target CPU usage per pod
+`hpa.memory` | `None` | Target memory usage per pod
+`hpa.requests` | `None` | Target HTTP requests per second per pod
+`serviceAccount.enabled` | `false` | Whether a service account should be created
+`serviceAccount.name` | `None` | The name of the service account to use, if not set and create is true, a name is generated using the fullname template
+`linkerd.profile.enabled` | `false` | Create Linkerd service profile
+`serviceMonitor.enabled` | `false` | Whether a Prometheus Operator service monitor should be created
+`serviceMonitor.interval` | `15s` | Prometheus scraping interval
+`ingress.enabled` | `false` | Enables Ingress
+`ingress.annotations` | `{}` | Ingress annotations
+`ingress.path` | `/*` | Ingress path
+`ingress.hosts` | `[]` | Ingress accepted hosts
+`ingress.tls` | `[]` | Ingress TLS configuration
+`resources.requests.cpu` | `1m` | Pod CPU request
+`resources.requests.memory` | `16Mi` | Pod memory request
+`resources.limits.cpu` | `None` | Pod CPU limit
+`resources.limits.memory` | `None` | Pod memory limit
+`nodeSelector` | `{}` | Node labels for pod assignment
+`tolerations` | `[]` | List of node taints to tolerate
+`affinity` | `None` | Node/pod affinities
+`podAnnotations` | `{}` | Pod annotations
 
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
 
 ```console
-$ helm install stable/podinfo --name my-release \
-  --set=image.tag=0.0.2,service.type=NodePort
+$ helm install my-release podinfo/podinfo \
+  --set=serviceMonitor.enabled=true,serviceMonitor.interval=5s
+```
+
+To add custom annotations you need to escape the annotation key string:
+
+```console
+$ helm upgrade -i my-release podinfo/podinfo \
+--set podAnnotations."appmesh\.k8s\.aws\/preview"=enabled
 ```
 
 Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
 
 ```console
-$ helm install stable/podinfo --name my-release -f values.yaml
+$ helm install my-release podinfo/podinfo -f values.yaml
 ```
 
 > **Tip**: You can use the default [values.yaml](values.yaml)
-```
 
+## Upgrading the chart
+
+### To =< 5.0.0
+
+Version 5.0.0 is a major update.
+
+* The chart now follows the new Kubernetes label recommendations:
+<https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/>
+
+The simplest way to update is to do a force upgrade, which recreates the resources by doing a delete and an install.

charts/podinfo/templates/NOTES.txt

@@ -11,9 +11,8 @@
      NOTE: It may take a few minutes for the LoadBalancer IP to be available.
            You can watch the status of by running 'kubectl get svc -w {{ template "podinfo.fullname" . }}'
   export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ template "podinfo.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
-  echo http://$SERVICE_IP:{{ .Values.service.port }}
+  echo http://$SERVICE_IP:{{ .Values.service.externalPort }}
 {{- else if contains "ClusterIP" .Values.service.type }}
-  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app={{ template "podinfo.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
   echo "Visit http://127.0.0.1:8080 to use your application"
-  kubectl port-forward $POD_NAME 8080:{{ .Values.service.externalPort }}
+  kubectl -n {{ .Release.Namespace }} port-forward deploy/{{ template "podinfo.fullname" . }} 8080:{{ .Values.service.externalPort }}
 {{- end }}

charts/podinfo/templates/_helpers.tpl

@@ -1,10 +1,9 @@
-{{/* vim: set filetype=mustache: */}}
 {{/*
 Expand the name of the chart.
 */}}
 {{- define "podinfo.name" -}}
-{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
-{{- end -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
 
 {{/*
 Create a default fully qualified app name.
@@ -12,32 +11,51 @@ We truncate at 63 chars because some Kubernetes name fields are limited to this
 If release name contains chart name it will be used as a full name.
 */}}
 {{- define "podinfo.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 -}}
+{{- 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 "podinfo.chart" -}}
-{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
-{{- end -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "podinfo.labels" -}}
+helm.sh/chart: {{ include "podinfo.chart" . }}
+{{ include "podinfo.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "podinfo.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "podinfo.fullname" . }}
+{{- end }}
 
 {{/*
 Create the name of the service account to use
 */}}
 {{- define "podinfo.serviceAccountName" -}}
-{{- if .Values.serviceAccount.enabled -}}
-    {{ default (include "podinfo.fullname" .) .Values.serviceAccount.name }}
-{{- else -}}
-    {{ default "default" .Values.serviceAccount.name }}
-{{- end -}}
-{{- end -}}
+{{- if .Values.serviceAccount.enabled }}
+{{- default (include "podinfo.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/podinfo/templates/deployment.yaml

@@ -3,10 +3,7 @@ kind: Deployment
 metadata:
   name: {{ template "podinfo.fullname" . }}
   labels:
-    app: {{ template "podinfo.name" . }}
-    chart: {{ template "podinfo.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
+    {{- include "podinfo.labels" . | nindent 4 }}
 spec:
   {{- if not .Values.hpa.enabled }}
   replicas: {{ .Values.replicaCount }}
@@ -17,16 +14,17 @@ spec:
       maxUnavailable: 1
   selector:
     matchLabels:
-      app: {{ template "podinfo.name" . }}
-      release: {{ .Release.Name }}
+      {{- include "podinfo.selectorLabels" . | nindent 6 }}
   template:
     metadata:
       labels:
-        app: {{ template "podinfo.name" . }}
-        release: {{ .Release.Name }}
+        {{- include "podinfo.selectorLabels" . | nindent 8 }}
       annotations:
         prometheus.io/scrape: "true"
         prometheus.io/port: "{{ .Values.service.httpPort }}"
+        {{- range $key, $value := .Values.podAnnotations }}
+        {{ $key }}: {{ $value | quote }}
+        {{- end }}
     spec:
       terminationGracePeriodSeconds: 30
       {{- if .Values.serviceAccount.enabled }}
@@ -51,6 +49,11 @@ spec:
             {{- range .Values.backends }}
             - --backend-url={{ . }}
             {{- end }}
+            {{- if .Values.cache }}
+            - --cache-server={{ .Values.cache }}
+            {{- else if .Values.redis.enabled }}
+            - --cache-server={{ template "podinfo.fullname" . }}:6379
+            {{- end }}
             - --level={{ .Values.logLevel }}
             - --random-delay={{ .Values.faults.delay }}
             - --random-error={{ .Values.faults.error }}
@@ -66,7 +69,7 @@ spec:
           env:
           {{- if .Values.ui.message }}
           - name: PODINFO_UI_MESSAGE
-            value: {{ .Values.ui.message }}
+            value: {{ quote .Values.ui.message }}
           {{- end }}
           {{- if .Values.ui.logo }}
           - name: PODINFO_UI_LOGO
@@ -74,7 +77,7 @@ spec:
           {{- end }}
           {{- if .Values.ui.color }}
           - name: PODINFO_UI_COLOR
-            value: {{ .Values.ui.color }}
+            value: {{ quote .Values.ui.color }}
           {{- end }}
           {{- if .Values.backend }}
           - name: PODINFO_BACKEND_URL

charts/podinfo/templates/hpa.yaml

@@ -1,8 +1,10 @@
 {{- if .Values.hpa.enabled -}}
-apiVersion: autoscaling/v2beta1
+apiVersion: autoscaling/v2beta2
 kind: HorizontalPodAutoscaler
 metadata:
   name: {{ template "podinfo.fullname" . }}
+  labels:
+    {{- include "podinfo.labels" . | nindent 4 }}  
 spec:
   scaleTargetRef:
     apiVersion: apps/v1
@@ -15,18 +17,25 @@ spec:
   - type: Resource
     resource:
       name: cpu
-      targetAverageUtilization: {{ .Values.hpa.cpu }}
+      target:
+        type: Utilization
+        averageUtilization: {{ .Values.hpa.cpu }}
   {{- end }}
   {{- if .Values.hpa.memory }}
   - type: Resource
     resource:
       name: memory
-      targetAverageValue: {{ .Values.hpa.memory }}
+      target:
+        type: AverageValue
+        averageValue: {{ .Values.hpa.memory }}
   {{- end }}
   {{- if .Values.hpa.requests }}
-  - type: Pod
-      pods:
-        metricName: http_requests
-        targetAverageValue: {{ .Values.hpa.requests }}
+  - type: Pods
+    pods:
+      metric:
+        name: http_requests
+      target:
+        type: AverageValue
+        averageValue: {{ .Values.hpa.requests }}
   {{- end }}
 {{- end }}

charts/podinfo/templates/ingress.yaml

@@ -1,15 +1,12 @@
 {{- if .Values.ingress.enabled -}}
 {{- $fullName := include "podinfo.fullname" . -}}
 {{- $ingressPath := .Values.ingress.path -}}
-apiVersion: extensions/v1beta1
+apiVersion: networking.k8s.io/v1beta1
 kind: Ingress
 metadata:
   name: {{ $fullName }}
   labels:
-    app: {{ template "podinfo.name" . }}
-    chart: {{ template "podinfo.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
+    {{- include "podinfo.labels" . | nindent 4 }}
 {{- with .Values.ingress.annotations }}
   annotations:
 {{ toYaml . | indent 4 }}

charts/podinfo/templates/linkerd.yaml

@@ -3,6 +3,8 @@ apiVersion: linkerd.io/v1alpha2
 kind: ServiceProfile
 metadata:
   name: {{ template "podinfo.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local
+  labels:
+    {{- include "podinfo.labels" . | nindent 4 }}  
 spec:
   routes:
     - condition:
@@ -61,6 +63,14 @@ spec:
         method: GET
         pathRegex: /status/[^/]*
       name: GET /status/{code}
+    - condition:
+        method: POST
+        pathRegex: /cache
+      name: POST /cache
+    - condition:
+        method: GET
+        pathRegex: /cache/[^/]*
+      name: GET /cache/{hash}
     - condition:
         method: POST
         pathRegex: /store

charts/podinfo/templates/redis/config.yaml

@@ -0,0 +1,12 @@
+{{- if .Values.redis.enabled -}}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "podinfo.fullname" . }}-redis
+data:
+  redis.conf: |
+    maxmemory 64mb
+    maxmemory-policy allkeys-lru
+    save ""
+    appendonly no
+{{- end }}

charts/podinfo/templates/redis/deployment.yaml

@@ -0,0 +1,68 @@
+{{- if .Values.redis.enabled -}}
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ template "podinfo.fullname" . }}-redis
+  labels:
+    app: {{ template "podinfo.fullname" . }}-redis
+spec:
+  strategy:
+    type: Recreate
+  selector:
+    matchLabels:
+      app: {{ template "podinfo.fullname" . }}-redis
+  template:
+    metadata:
+      labels:
+        app: {{ template "podinfo.fullname" . }}-redis
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/redis/config.yaml") . | sha256sum | quote }}
+    spec:
+      {{- if .Values.serviceAccount.enabled }}
+      serviceAccountName: {{ template "podinfo.serviceAccountName" . }}
+      {{- end }}
+      containers:
+        - name: redis
+          image: "{{ .Values.redis.repository }}:{{ .Values.redis.tag }}"
+          imagePullPolicy: IfNotPresent
+          command:
+            - redis-server
+            - "/redis-master/redis.conf"
+          ports:
+            - name: redis
+              containerPort: 6379
+              protocol: TCP
+          livenessProbe:
+            tcpSocket:
+              port: redis
+            initialDelaySeconds: 5
+            timeoutSeconds: 5
+          readinessProbe:
+            exec:
+              command:
+                - redis-cli
+                - ping
+            initialDelaySeconds: 5
+            timeoutSeconds: 5
+          resources:
+            limits:
+              cpu: 1000m
+              memory: 128Mi
+            requests:
+              cpu: 100m
+              memory: 32Mi
+          volumeMounts:
+            - mountPath: /var/lib/redis
+              name: data
+            - mountPath: /redis-master
+              name: config
+      volumes:
+        - name: data
+          emptyDir: {}
+        - name: config
+          configMap:
+            name: {{ template "podinfo.fullname" . }}-redis
+            items:
+              - key: redis.conf
+                path: redis.conf
+{{- end }}

charts/podinfo/templates/redis/service.yaml

@@ -0,0 +1,17 @@
+{{- if .Values.redis.enabled -}}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "podinfo.fullname" . }}-redis
+  labels:
+    app: {{ template "podinfo.fullname" . }}-redis
+spec:
+  type: ClusterIP
+  selector:
+    app: {{ template "podinfo.fullname" . }}-redis
+  ports:
+    - name: redis
+      port: 6379
+      protocol: TCP
+      targetPort: redis
+{{- end }}

charts/podinfo/templates/service.yaml

@@ -4,10 +4,7 @@ kind: Service
 metadata:
   name: {{ template "podinfo.fullname" . }}
   labels:
-    app: {{ template "podinfo.name" . }}
-    chart: {{ template "podinfo.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
+    {{- include "podinfo.labels" . | nindent 4 }}
 spec:
   type: {{ .Values.service.type }}
   ports:
@@ -25,6 +22,5 @@ spec:
       name: grpc
     {{- end }}
   selector:
-    app: {{ template "podinfo.name" . }}
-    release: {{ .Release.Name }}
-{{- end }}
+    {{- include "podinfo.selectorLabels" . | nindent 4 }}
+{{- end }}

charts/podinfo/templates/serviceaccount.yaml

@@ -4,8 +4,5 @@ kind: ServiceAccount
 metadata:
   name: {{ template "podinfo.serviceAccountName" . }}
   labels:
-    app: {{ template "podinfo.name" . }}
-    chart: {{ template "podinfo.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
+    {{- include "podinfo.labels" . | nindent 4 }}
 {{- end -}}

charts/podinfo/templates/servicemonitor.yaml

@@ -0,0 +1,16 @@
+{{- if .Values.serviceMonitor.enabled -}}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ template "podinfo.fullname" . }}
+  labels:
+    {{- include "podinfo.labels" . | nindent 4 }}
+spec:
+  endpoints:
+    - path: /metrics
+      port: http
+      interval: {{ .Values.serviceMonitor.interval }}
+  selector:
+    matchLabels:
+      app: {{ template "podinfo.fullname" . }}
+{{- end }}

charts/podinfo/templates/tests/cache.yaml

@@ -0,0 +1,29 @@
+{{- if .Values.cache }}
+apiVersion: v1
+kind: Pod
+metadata:
+  name: {{ template "podinfo.fullname" . }}-cache-test-{{ randAlphaNum 5 | lower }}
+  labels:
+    {{- include "podinfo.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+    sidecar.istio.io/inject: "false"
+    linkerd.io/inject: disabled
+    appmesh.k8s.aws/sidecarInjectorWebhook: disabled
+spec:
+  containers:
+    - name: curl
+      image: curlimages/curl:7.69.0
+      command:
+        - sh
+        - -c
+        - |
+          curl -sd 'data' ${PODINFO_SVC}/cache/test &&
+          curl -s ${PODINFO_SVC}/cache/test | grep data &&
+          curl -s -XDELETE ${PODINFO_SVC}/cache/test
+      env:
+      - name: PODINFO_SVC
+        value: "{{ template "podinfo.fullname" . }}.{{ .Release.Namespace }}:{{ .Values.service.externalPort }}"
+  restartPolicy: Never
+{{- end }}

charts/podinfo/templates/tests/fail.yaml

@@ -0,0 +1,21 @@
+{{- if .Values.faults.testFail }}
+apiVersion: v1
+kind: Pod
+metadata:
+  name: {{ template "podinfo.fullname" . }}-fault-test-{{ randAlphaNum 5 | lower }}
+  labels:
+    {{- include "podinfo.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test-success
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+    sidecar.istio.io/inject: "false"
+    linkerd.io/inject: disabled
+    appmesh.k8s.aws/sidecarInjectorWebhook: disabled
+spec:
+  containers:
+    - name: fault
+      image: alpine:3.11
+      command: ['/bin/sh']
+      args:  ['-c', 'exit 1']
+  restartPolicy: Never
+{{- end }}

charts/podinfo/templates/tests/grpc.yaml

@@ -3,12 +3,9 @@ kind: Pod
 metadata:
   name: {{ template "podinfo.fullname" . }}-grpc-test-{{ randAlphaNum 5 | lower }}
   labels:
-    heritage: {{ .Release.Service }}
-    release: {{ .Release.Name }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version }}
-    app: {{ template "podinfo.name" . }}
+    {{- include "podinfo.labels" . | nindent 4 }}
   annotations:
-    "helm.sh/hook": test
+    "helm.sh/hook": test-success
     "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
     sidecar.istio.io/inject: "false"
     linkerd.io/inject: disabled

charts/podinfo/templates/tests/jwt.yaml

@@ -3,12 +3,9 @@ kind: Pod
 metadata:
   name: {{ template "podinfo.fullname" . }}-jwt-test-{{ randAlphaNum 5 | lower }}
   labels:
-    heritage: {{ .Release.Service }}
-    release: {{ .Release.Name }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version }}
-    app: {{ template "podinfo.name" . }}
+    {{- include "podinfo.labels" . | nindent 4 }}
   annotations:
-    "helm.sh/hook": test
+    "helm.sh/hook": test-success
     "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
     sidecar.istio.io/inject: "false"
     linkerd.io/inject: disabled
@@ -25,6 +22,5 @@ spec:
           curl -sH "Authorization: Bearer ${TOKEN}" ${PODINFO_SVC}/token/validate | grep test
       env:
       - name: PODINFO_SVC
-        value: {{ template "podinfo.fullname" . }}.{{ .Release.Namespace }}:{{ .Values.service.externalPort }}
+        value: "{{ template "podinfo.fullname" . }}.{{ .Release.Namespace }}:{{ .Values.service.externalPort }}"
   restartPolicy: Never
-

charts/podinfo/templates/tests/service.yaml

@@ -3,12 +3,9 @@ kind: Pod
 metadata:
   name: {{ template "podinfo.fullname" . }}-service-test-{{ randAlphaNum 5 | lower }}
   labels:
-    heritage: {{ .Release.Service }}
-    release: {{ .Release.Name }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version }}
-    app: {{ template "podinfo.name" . }}
+    {{- include "podinfo.labels" . | nindent 4 }}
   annotations:
-    "helm.sh/hook": test
+    "helm.sh/hook": test-success
     "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
     sidecar.istio.io/inject: "false"
     linkerd.io/inject: disabled
@@ -16,7 +13,7 @@ metadata:
 spec:
   containers:
     - name: curl
-      image: giantswarm/tiny-tools
+      image: curlimages/curl:7.69.0
       command:
         - sh
         - -c
@@ -24,5 +21,5 @@ spec:
           curl -s ${PODINFO_SVC}/api/info | grep version
       env:
         - name: PODINFO_SVC
-          value: {{ template "podinfo.fullname" . }}.{{ .Release.Namespace }}:{{ .Values.service.externalPort }}
+          value: "{{ template "podinfo.fullname" . }}.{{ .Release.Namespace }}:{{ .Values.service.externalPort }}"
   restartPolicy: Never

charts/podinfo/templates/tests/timeout.yaml

@@ -0,0 +1,21 @@
+{{- if .Values.faults.testTimeout }}
+apiVersion: v1
+kind: Pod
+metadata:
+  name: {{ template "podinfo.fullname" . }}-fault-test-{{ randAlphaNum 5 | lower }}
+  labels:
+    {{- include "podinfo.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test-success
+    "helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
+    sidecar.istio.io/inject: "false"
+    linkerd.io/inject: disabled
+    appmesh.k8s.aws/sidecarInjectorWebhook: disabled
+spec:
+  containers:
+    - name: fault
+      image: alpine:3.11
+      command: ['/bin/sh']
+      args:  ['-c', 'while sleep 3600; do :; done']
+  restartPolicy: Never
+{{- end }}

charts/podinfo/values-prod.yaml

@@ -0,0 +1,99 @@
+# Prod values for podinfo.
+
+replicaCount: 1
+logLevel: info
+backend: #http://backend-podinfo:9898/echo
+backends: []
+
+ui:
+  color: "#34577c"
+  message: ""
+  logo: ""
+
+faults:
+  delay: false
+  error: false
+  unhealthy: false
+  unready: false
+  testFail: false
+  testTimeout: false
+
+h2c:
+  enabled: false
+
+image:
+  repository: ghcr.io/stefanprodan/podinfo
+  tag: 5.0.3
+  pullPolicy: IfNotPresent
+
+service:
+  enabled: true
+  type: ClusterIP
+  metricsPort: 9797
+  httpPort: 9898
+  externalPort: 9898
+  grpcPort: 9999
+  grpcService: podinfo
+  nodePort: 31198
+
+# metrics-server add-on required
+hpa:
+  enabled: true
+  maxReplicas: 5
+  # average total CPU usage per pod (1-100)
+  cpu: 99
+  # average memory usage per pod (100Mi-1Gi)
+  memory:
+  # average http requests per second per pod (k8s-prometheus-adapter)
+  requests:
+
+# Redis address in the format <host>:<port>
+cache: ""
+# Redis deployment
+redis:
+  enabled: true
+  repository: redis
+  tag: 6.0.8
+
+serviceAccount:
+  # Specifies whether a service account should be created
+  enabled: false
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name:
+
+linkerd:
+  profile:
+    enabled: false
+
+serviceMonitor:
+  enabled: false
+  interval: 15s
+
+ingress:
+  enabled: false
+  annotations: {}
+    # kubernetes.io/ingress.class: nginx
+  # kubernetes.io/tls-acme: "true"
+  path: /*
+  hosts: []
+  #    - podinfo.local
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local
+
+resources:
+  limits:
+    memory: 256Mi
+  requests:
+    cpu: 100m
+    memory: 64Mi
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
+
+podAnnotations: {}

charts/podinfo/values.yaml

@@ -15,13 +15,15 @@ faults:
   error: false
   unhealthy: false
   unready: false
+  testFail: false
+  testTimeout: false
 
 h2c:
   enabled: false
 
 image:
-  repository: stefanprodan/podinfo
-  tag: 3.2.1
+  repository: ghcr.io/stefanprodan/podinfo
+  tag: 5.0.3
   pullPolicy: IfNotPresent
 
 service:
@@ -45,6 +47,14 @@ hpa:
   # average http requests per second per pod (k8s-prometheus-adapter)
   requests:
 
+# Redis address in the format <host>:<port>
+cache: ""
+# Redis deployment
+redis:
+  enabled: false
+  repository: redis
+  tag: 6.0.8
+
 serviceAccount:
   # Specifies whether a service account should be created
   enabled: false
@@ -56,6 +66,10 @@ linkerd:
   profile:
     enabled: false
 
+serviceMonitor:
+  enabled: false
+  interval: 15s
+
 ingress:
   enabled: false
   annotations: {}
@@ -81,3 +95,4 @@ tolerations: []
 
 affinity: {}
 
+podAnnotations: {}

cmd/podcli/code.go

@@ -1,365 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"io"
-	"io/ioutil"
-	"log"
-	"os"
-	"os/exec"
-	"path"
-	"path/filepath"
-	"regexp"
-	"strings"
-
-	"github.com/hashicorp/go-getter"
-	"github.com/spf13/cobra"
-)
-
-var (
-	codeProjectName string
-	codeGitUser     string
-	codeVersion     string
-	codeProjectPath string
-)
-
-var codeCmd = &cobra.Command{
-	Use:   `code`,
-	Short: "Code commands",
-}
-
-var codeInitCmd = &cobra.Command{
-	Use:     `init [name]`,
-	Short:   "initialize podinfo code repo",
-	Example: `  code init demo-app --version=v1.2.0 --git-user=stefanprodan`,
-	RunE:    runCodeInit,
-}
-
-func init() {
-	codeInitCmd.Flags().StringVar(&codeGitUser, "git-user", "", "GitHub user or org")
-	codeInitCmd.Flags().StringVar(&codeVersion, "version", "master", "podinfo repo tag or branch name")
-	codeInitCmd.Flags().StringVar(&codeProjectPath, "path", ".", "destination repo")
-
-	codeCmd.AddCommand(codeInitCmd)
-
-	rootCmd.AddCommand(codeCmd)
-}
-
-func runCodeInit(cmd *cobra.Command, args []string) error {
-
-	if len(codeGitUser) < 0 {
-		return fmt.Errorf("--git-user is required")
-	}
-	if len(args) < 1 {
-		return fmt.Errorf("project name is required")
-	}
-
-	codeProjectName = args[0]
-
-	pwd, err := os.Getwd()
-	if err != nil {
-		log.Fatalf("Error getting pwd: %s", err)
-		os.Exit(1)
-	}
-
-	tmpPath := "/tmp/k8s-podinfo"
-	versionName := fmt.Sprintf("k8s-podinfo-%s", codeVersion)
-
-	downloadURL := fmt.Sprintf("https://github.com/stefanprodan/podinfo/archive/%s.zip", codeVersion)
-	client := &getter.Client{
-		Src:  downloadURL,
-		Dst:  tmpPath,
-		Pwd:  pwd,
-		Mode: getter.ClientModeAny,
-	}
-
-	fmt.Printf("Downloading %s\n", downloadURL)
-
-	if err := client.Get(); err != nil {
-		log.Fatalf("Error downloading: %s", err)
-		os.Exit(1)
-	}
-
-	pkgFrom := "github.com/stefanprodan/podinfo"
-	pkgTo := fmt.Sprintf("github.com/%s/%s", codeGitUser, codeProjectName)
-
-	if err := replaceImports(tmpPath, pkgFrom, pkgTo); err != nil {
-		log.Fatalf("Error parsing imports: %s", err)
-		os.Exit(1)
-	}
-
-	dirs := []string{"pkg", "cmd", "ui", "vendor", ".github"}
-	for _, dir := range dirs {
-
-		err = os.MkdirAll(path.Join(codeProjectPath, dir), os.ModePerm)
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-		if err := copyDir(path.Join(tmpPath, versionName, dir), path.Join(codeProjectPath, dir)); err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-	}
-
-	files := []string{"Gopkg.toml", "Gopkg.lock"}
-	for _, file := range files {
-		if err := copyFile(path.Join(tmpPath, versionName, file), path.Join(codeProjectPath, file)); err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-
-		fileContent, err := ioutil.ReadFile(path.Join(codeProjectPath, file))
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-
-		newContent := strings.Replace(string(fileContent), pkgFrom, pkgTo, -1)
-		err = ioutil.WriteFile(path.Join(codeProjectPath, file), []byte(newContent), os.ModePerm)
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-	}
-
-	projFrom := "stefanprodan/podinfo"
-	projTo := fmt.Sprintf("%s/%s", codeGitUser, codeProjectName)
-
-	makeFiles := []string{"Makefile.gh", "Dockerfile.gh"}
-	for _, file := range makeFiles {
-		fileContent, err := ioutil.ReadFile(path.Join(tmpPath, versionName, file))
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-
-		destFile := strings.Replace(file, ".gh", "", -1)
-		newContent := strings.Replace(string(fileContent), projFrom, projTo, -1)
-		err = ioutil.WriteFile(path.Join(codeProjectPath, destFile), []byte(newContent), os.ModePerm)
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-	}
-
-	workflows := []string{".github/main.workflow"}
-	for _, file := range workflows {
-		fileContent, err := ioutil.ReadFile(path.Join(codeProjectPath, file))
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-
-		newContent := strings.Replace(string(fileContent), "Dockerfile.gh", "Dockerfile", -1)
-		err = ioutil.WriteFile(path.Join(codeProjectPath, file), []byte(newContent), os.ModePerm)
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-	}
-
-	dockerFiles := []string{"Dockerfile.ci"}
-	for _, file := range dockerFiles {
-		fileContent, err := ioutil.ReadFile(path.Join(tmpPath, versionName, file))
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-
-		newContent := strings.Replace(string(fileContent), projFrom, projTo, -1)
-		err = ioutil.WriteFile(path.Join(codeProjectPath, file), []byte(newContent), os.ModePerm)
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-	}
-
-	travisFiles := []string{"travis.lite.yml"}
-	for _, file := range travisFiles {
-		fileContent, err := ioutil.ReadFile(path.Join(tmpPath, versionName, file))
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-
-		destFile := strings.Replace(file, "travis.lite.yml", ".travis.yml", -1)
-		newContent := strings.Replace(string(fileContent), projFrom, projTo, -1)
-		err = ioutil.WriteFile(path.Join(codeProjectPath, destFile), []byte(newContent), os.ModePerm)
-		if err != nil {
-			log.Fatalf("Error: %s", err)
-			os.Exit(1)
-		}
-	}
-
-	err = gitPush()
-	if err != nil {
-		log.Fatalf("git push error: %s", err)
-		os.Exit(1)
-	}
-
-	fmt.Println("Initialization finished")
-	return nil
-}
-
-func gitPush() error {
-	cmdPush := fmt.Sprintf("git add . && git commit -m \"sync %s\" && git push", codeVersion)
-	cmd := exec.Command("sh", "-c", cmdPush)
-	output, err := cmd.Output()
-	if err != nil {
-		return err
-	}
-	fmt.Println(string(output))
-	return nil
-}
-
-func replaceImports(projectPath string, pkgFrom string, pkgTo string) error {
-	regexImport, err := regexp.Compile(`(?s)(import(.*?)\)|import.*$)`)
-	if err != nil {
-		return err
-	}
-
-	regexImportedPackage, err := regexp.Compile(`"(.*?)"`)
-	if err != nil {
-		return err
-	}
-
-	found := []string{}
-
-	err = filepath.Walk(projectPath, func(path string, info os.FileInfo, err error) error {
-		if filepath.Ext(path) == ".go" {
-			bts, err := ioutil.ReadFile(path)
-			if err != nil {
-				return err
-			}
-
-			content := string(bts)
-			matches := regexImport.FindAllString(content, -1)
-			isExists := false
-
-		isReplaceable:
-			for _, each := range matches {
-				for _, eachLine := range strings.Split(each, "\n") {
-					matchesInline := regexImportedPackage.FindAllString(eachLine, -1)
-					if err != nil {
-						return err
-					}
-
-					for _, eachSubline := range matchesInline {
-						if strings.Contains(eachSubline, pkgFrom) {
-							isExists = true
-							break isReplaceable
-						}
-					}
-				}
-			}
-
-			if isExists {
-				content = strings.Replace(content, `"`+pkgFrom+`"`, `"`+pkgTo+`"`, -1)
-				content = strings.Replace(content, `"`+pkgFrom+`/`, `"`+pkgTo+`/`, -1)
-				found = append(found, path)
-			}
-
-			err = ioutil.WriteFile(path, []byte(content), info.Mode())
-			if err != nil {
-				return err
-			}
-		}
-
-		return nil
-	})
-
-	if err != nil {
-		fmt.Println("ERROR", err.Error())
-	}
-
-	if len(found) == 0 {
-		fmt.Println("Nothing replaced")
-	} else {
-		fmt.Printf("Go imports total %d file replaced\n", len(found))
-	}
-
-	return nil
-}
-
-func copyDir(src string, dst string) error {
-	si, err := os.Stat(src)
-	if err != nil {
-		return err
-	}
-	if !si.IsDir() {
-		return fmt.Errorf("source is not a directory")
-	}
-
-	err = os.MkdirAll(dst, si.Mode())
-	if err != nil {
-		return err
-	}
-
-	entries, err := ioutil.ReadDir(src)
-	if err != nil {
-		return err
-	}
-
-	for _, entry := range entries {
-		srcPath := filepath.Join(src, entry.Name())
-		dstPath := filepath.Join(dst, entry.Name())
-
-		if entry.IsDir() {
-			err = copyDir(srcPath, dstPath)
-			if err != nil {
-				return err
-			}
-		} else {
-			// Skip symlinks.
-			if entry.Mode()&os.ModeSymlink != 0 {
-				continue
-			}
-
-			err = copyFile(srcPath, dstPath)
-			if err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func copyFile(src, dst string) (err error) {
-	in, err := os.Open(src)
-	if err != nil {
-		return
-	}
-	defer in.Close()
-
-	out, err := os.Create(dst)
-	if err != nil {
-		return
-	}
-	defer func() {
-		if e := out.Close(); e != nil {
-			err = e
-		}
-	}()
-
-	_, err = io.Copy(out, in)
-	if err != nil {
-		return
-	}
-
-	err = out.Sync()
-	if err != nil {
-		return
-	}
-
-	si, err := os.Stat(src)
-	if err != nil {
-		return
-	}
-	err = os.Chmod(dst, si.Mode())
-	if err != nil {
-		return
-	}
-
-	return
-}

cmd/podinfo/main.go

@@ -40,12 +40,16 @@ func main() {
 	fs.String("ui-color", "#34577c", "UI color")
 	fs.String("ui-message", fmt.Sprintf("greetings from podinfo v%v", version.VERSION), "UI message")
 	fs.Bool("h2c", false, "allow upgrading to H2C")
-	fs.Bool("random-delay", false, "between 0 and 5 seconds random delay")
+	fs.Bool("random-delay", false, "between 0 and 5 seconds random delay by default")
+	fs.String("random-delay-unit", "s", "either s(seconds) or ms(milliseconds")
+	fs.Int("random-delay-min", 0, "min for random delay: 0 by default")
+	fs.Int("random-delay-max", 5, "max for random delay: 5 by default")
 	fs.Bool("random-error", false, "1/3 chances of a random response error")
 	fs.Bool("unhealthy", false, "when set, healthy state is never reached")
 	fs.Bool("unready", false, "when set, ready state is never reached")
 	fs.Int("stress-cpu", 0, "number of CPU cores with 100 load")
 	fs.Int("stress-memory", 0, "MB of data to load into memory")
+	fs.String("cache-server", "", "Redis address in the format <host>:<port>")
 
 	versionFlag := fs.BoolP("version", "v", false, "get version number")
 
@@ -100,6 +104,20 @@ func main() {
 		viper.Set("port", strconv.Itoa(port))
 	}
 
+	// validate random delay options
+	if viper.GetInt("random-delay-max") < viper.GetInt("random-delay-min") {
+		logger.Panic("`--random-delay-max` should be greater than `--random-delay-min`")
+	}
+
+	switch delayUnit := viper.GetString("random-delay-unit"); delayUnit {
+	case
+		"s",
+		"ms":
+		break
+	default:
+		logger.Panic("`random-delay-unit` accepted values are: s|ms")
+	}
+
 	// load gRPC server config
 	var grpcCfg grpc.Config
 	if err := viper.Unmarshal(&grpcCfg); err != nil {

deploy/README.md

@@ -0,0 +1,32 @@
+# Deploy demo webapp 
+
+Demo webapp manifests:
+- [common](webapp/common)
+- [frontend](webapp/frontend)
+- [backend](webapp/backend)
+
+Deploy the demo in `webapp` namespace:
+
+```bash
+kubectl apply -f ./webapp/common
+kubectl apply -f ./webapp/backend
+kubectl apply -f ./webapp/frontend
+```
+
+Deploy the demo in the `dev` namespace:
+
+```bash
+kustomize build ./overlays/dev | kubectl apply -f-
+```
+
+Deploy the demo in the `staging` namespace:
+
+```bash
+kustomize build ./overlays/staging | kubectl apply -f-
+```
+
+Deploy the demo in the `production` namespace:
+
+```bash
+kustomize build ./overlays/production | kubectl apply -f-
+```

deploy/bases/backend/deployment.yaml

@@ -0,0 +1,73 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: backend
+spec:
+  minReadySeconds: 3
+  revisionHistoryLimit: 5
+  progressDeadlineSeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: backend
+  template:
+    metadata:
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "9797"
+      labels:
+        app: backend
+    spec:
+      containers:
+      - name: backend
+        image: ghcr.io/stefanprodan/podinfo:5.0.3
+        imagePullPolicy: IfNotPresent
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        - name: http-metrics
+          containerPort: 9797
+          protocol: TCP
+        - name: grpc
+          containerPort: 9999
+          protocol: TCP
+        command:
+        - ./podinfo
+        - --port=9898
+        - --port-metrics=9797
+        - --grpc-port=9999
+        - --grpc-service-name=backend
+        - --level=info
+        - --cache-server=cache:6379
+        env:
+        - name: PODINFO_UI_COLOR
+          value: "#34577c"
+        livenessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/healthz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        readinessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/readyz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 2000m
+            memory: 512Mi
+          requests:
+            cpu: 100m
+            memory: 32Mi

deploy/bases/backend/hpa.yaml

@@ -0,0 +1,18 @@
+apiVersion: autoscaling/v2beta2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: backend
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: backend
+  minReplicas: 1
+  maxReplicas: 2
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      target:
+        type: Utilization
+        averageUtilization: 99

deploy/bases/backend/kustomization.yaml

@@ -0,0 +1,7 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - service.yaml
+  - deployment.yaml
+  - hpa.yaml
+

deploy/bases/backend/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: backend
+spec:
+  type: ClusterIP
+  selector:
+    app: backend
+  ports:
+    - name: http
+      port: 9898
+      protocol: TCP
+      targetPort: http
+    - port: 9999
+      targetPort: grpc
+      protocol: TCP
+      name: grpc

deploy/bases/cache/deployment.yaml

@@ -0,0 +1,57 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: cache
+spec:
+  selector:
+    matchLabels:
+      app: cache
+  template:
+    metadata:
+      labels:
+        app: cache
+    spec:
+      containers:
+        - name: redis
+          image: redis:6.0.1
+          imagePullPolicy: IfNotPresent
+          command:
+            - redis-server
+            - "/redis-master/redis.conf"
+          ports:
+            - name: redis
+              containerPort: 6379
+              protocol: TCP
+          livenessProbe:
+            tcpSocket:
+              port: redis
+            initialDelaySeconds: 5
+            timeoutSeconds: 5
+          readinessProbe:
+            exec:
+              command:
+                - redis-cli
+                - ping
+            initialDelaySeconds: 5
+            timeoutSeconds: 5
+          resources:
+            limits:
+              cpu: 1000m
+              memory: 128Mi
+            requests:
+              cpu: 100m
+              memory: 32Mi
+          volumeMounts:
+            - mountPath: /var/lib/redis
+              name: data
+            - mountPath: /redis-master
+              name: config
+      volumes:
+        - name: data
+          emptyDir: {}
+        - name: config
+          configMap:
+            name: redis-config
+            items:
+              - key: redis.conf
+                path: redis.conf

deploy/bases/cache/kustomization.yaml

@@ -0,0 +1,9 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - service.yaml
+  - deployment.yaml
+configMapGenerator:
+  - name: redis-config
+    files:
+      - redis.conf

deploy/bases/cache/redis.conf

@@ -0,0 +1,4 @@
+maxmemory 64mb
+maxmemory-policy allkeys-lru
+save ""
+appendonly no

deploy/bases/cache/service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: cache
+spec:
+  type: ClusterIP
+  selector:
+    app: cache
+  ports:
+    - name: redis
+      port: 6379
+      protocol: TCP
+      targetPort: redis

deploy/bases/frontend/deployment.yaml

@@ -0,0 +1,72 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: frontend
+spec:
+  minReadySeconds: 3
+  revisionHistoryLimit: 5
+  progressDeadlineSeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: frontend
+  template:
+    metadata:
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "9797"
+      labels:
+        app: frontend
+    spec:
+      containers:
+      - name: frontend
+        image: ghcr.io/stefanprodan/podinfo:5.0.3
+        imagePullPolicy: IfNotPresent
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        - name: http-metrics
+          containerPort: 9797
+          protocol: TCP
+        - name: grpc
+          containerPort: 9999
+          protocol: TCP
+        command:
+        - ./podinfo
+        - --port=9898
+        - --port-metrics=9797
+        - --level=info
+        - --backend-url=http://backend:9898/echo
+        - --cache-server=cache:6379
+        env:
+        - name: PODINFO_UI_COLOR
+          value: "#34577c"
+        livenessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/healthz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        readinessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/readyz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 1000m
+            memory: 128Mi
+          requests:
+            cpu: 100m
+            memory: 32Mi

deploy/bases/frontend/hpa.yaml

@@ -0,0 +1,18 @@
+apiVersion: autoscaling/v2beta2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: frontend
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: frontend
+  minReplicas: 1
+  maxReplicas: 4
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      target:
+        type: Utilization
+        averageUtilization: 99

deploy/bases/frontend/kustomization.yaml

@@ -0,0 +1,7 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - service.yaml
+  - deployment.yaml
+  - hpa.yaml
+

deploy/bases/frontend/service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend
+spec:
+  type: ClusterIP
+  selector:
+    app: frontend
+  ports:
+    - name: http
+      port: 80
+      protocol: TCP
+      targetPort: http

deploy/overlays/dev/kustomization.yaml

@@ -0,0 +1,10 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: dev
+resources:
+  - ../../bases/backend
+  - ../../bases/frontend
+  - ../../bases/cache
+  - namespace.yaml
+transformers:
+  - labels.yaml

deploy/overlays/dev/labels.yaml

@@ -0,0 +1,10 @@
+apiVersion: builtin
+kind: LabelTransformer
+metadata:
+  name: labels
+labels:
+  env: dev
+  instance: webapp
+fieldSpecs:
+  - path: metadata/labels
+    create: true

deploy/overlays/dev/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: dev

deploy/overlays/production/kustomization.yaml

@@ -0,0 +1,10 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: production
+resources:
+  - ../../bases/backend
+  - ../../bases/frontend
+  - ../../bases/cache
+  - namespace.yaml
+transformers:
+  - labels.yaml

deploy/overlays/production/labels.yaml

@@ -0,0 +1,10 @@
+apiVersion: builtin
+kind: LabelTransformer
+metadata:
+  name: labels
+labels:
+  env: production
+  instance: webapp
+fieldSpecs:
+  - path: metadata/labels
+    create: true

deploy/overlays/production/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: production

deploy/overlays/staging/kustomization.yaml

@@ -0,0 +1,10 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: staging
+resources:
+  - ../../bases/backend
+  - ../../bases/frontend
+  - ../../bases/cache
+  - namespace.yaml
+transformers:
+  - labels.yaml

deploy/overlays/staging/labels.yaml

@@ -0,0 +1,10 @@
+apiVersion: builtin
+kind: LabelTransformer
+metadata:
+  name: labels
+labels:
+  env: staging
+  instance: webapp
+fieldSpecs:
+  - path: metadata/labels
+    create: true

deploy/overlays/staging/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: staging

deploy/webapp/backend/deployment.yaml

@@ -0,0 +1,74 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: backend
+  namespace: webapp
+spec:
+  minReadySeconds: 3
+  revisionHistoryLimit: 5
+  progressDeadlineSeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: backend
+  template:
+    metadata:
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "9797"
+      labels:
+        app: backend
+    spec:
+      serviceAccountName: webapp
+      containers:
+      - name: backend
+        image: ghcr.io/stefanprodan/podinfo:5.0.3
+        imagePullPolicy: IfNotPresent
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        - name: http-metrics
+          containerPort: 9797
+          protocol: TCP
+        - name: grpc
+          containerPort: 9999
+          protocol: TCP
+        command:
+        - ./podinfo
+        - --port=9898
+        - --port-metrics=9797
+        - --grpc-port=9999
+        - --grpc-service-name=backend
+        - --level=info
+        env:
+        - name: PODINFO_UI_COLOR
+          value: "#34577c"
+        livenessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/healthz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        readinessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/readyz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 2000m
+            memory: 512Mi
+          requests:
+            cpu: 100m
+            memory: 32Mi

deploy/webapp/backend/hpa.yaml

@@ -0,0 +1,19 @@
+apiVersion: autoscaling/v2beta2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: backend
+  namespace: webapp
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: backend
+  minReplicas: 1
+  maxReplicas: 2
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      target:
+        type: Utilization
+        averageUtilization: 99

deploy/webapp/backend/service.yaml

@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: backend
+  namespace: webapp
+spec:
+  type: ClusterIP
+  selector:
+    app: backend
+  ports:
+    - name: http
+      port: 9898
+      protocol: TCP
+      targetPort: http
+    - port: 9999
+      targetPort: grpc
+      protocol: TCP
+      name: grpc

deploy/webapp/common/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: webapp

deploy/webapp/common/reconciler-rbac.yaml

@@ -0,0 +1,29 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: reconciler
+  namespace: webapp
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: reconciler
+  namespace: webapp
+rules:
+  - apiGroups: ['*']
+    resources: ['*']
+    verbs: ['*']
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: reconciler
+  namespace: webapp
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: reconciler
+subjects:
+  - kind: ServiceAccount
+    name: reconciler
+    namespace: webapp

deploy/webapp/common/service-account.yaml

@@ -0,0 +1,5 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: webapp
+  namespace: webapp

deploy/webapp/frontend/deployment.yaml

@@ -0,0 +1,73 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: frontend
+  namespace: webapp
+spec:
+  minReadySeconds: 3
+  revisionHistoryLimit: 5
+  progressDeadlineSeconds: 60
+  strategy:
+    rollingUpdate:
+      maxUnavailable: 0
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: frontend
+  template:
+    metadata:
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "9797"
+      labels:
+        app: frontend
+    spec:
+      serviceAccountName: webapp
+      containers:
+      - name: frontend
+        image: ghcr.io/stefanprodan/podinfo:5.0.3
+        imagePullPolicy: IfNotPresent
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        - name: http-metrics
+          containerPort: 9797
+          protocol: TCP
+        - name: grpc
+          containerPort: 9999
+          protocol: TCP
+        command:
+        - ./podinfo
+        - --port=9898
+        - --port-metrics=9797
+        - --level=info
+        - --backend-url=http://backend:9898/echo
+        env:
+        - name: PODINFO_UI_COLOR
+          value: "#34577c"
+        livenessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/healthz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        readinessProbe:
+          exec:
+            command:
+            - podcli
+            - check
+            - http
+            - localhost:9898/readyz
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 1000m
+            memory: 128Mi
+          requests:
+            cpu: 100m
+            memory: 32Mi

deploy/webapp/frontend/hpa.yaml

@@ -0,0 +1,19 @@
+apiVersion: autoscaling/v2beta2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: frontend
+  namespace: webapp
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: backend
+  minReplicas: 1
+  maxReplicas: 4
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      target:
+        type: Utilization
+        averageUtilization: 99

deploy/webapp/frontend/service.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: frontend
+  namespace: webapp
+spec:
+  type: ClusterIP
+  selector:
+    app: frontend
+  ports:
+    - name: http
+      port: 80
+      protocol: TCP
+      targetPort: http

e2e/README.md

@@ -1,35 +0,0 @@
-# podinfo end-to-end testing
-
-The e2e testing infrastructure is powered by CircleCI and [Kubernetes Kind](https://github.com/kubernetes-sigs/kind).
-
-### CI workflow
-
-* download go modules
-* run unit tests
-* build container
-* install kubectl, Helm v3 and Kubernetes Kind CLIs
-* create local Kubernetes cluster with kind
-* load podinfo image onto the local cluster
-* deploy podinfo with Helm
-* set the podinfo image to the locally built one
-* run Helm tests
-
-```yaml
-jobs:
-  e2e-kubernetes:
-    machine: true
-    steps:
-      - checkout
-      - run:
-          name: Build podinfo container
-          command: e2e/build.sh
-      - run:
-          name: Start Kubernetes Kind cluster
-          command: e2e/bootstrap.sh
-      - run:
-          name: Install podinfo with Helm
-          command: e2e/install.sh
-      - run:
-          name: Run Helm tests
-          command: e2e/test.sh
-```

e2e/bootstrap.sh

@@ -1,26 +0,0 @@
-#!/usr/bin/env bash
-
-set -o errexit
-
-REPO_ROOT=$(git rev-parse --show-toplevel)
-KIND_VERSION=v0.7.0
-
-if [[ "$1" ]]; then
-  KIND_VERSION=$1
-fi
-
-echo ">>> Installing kubectl"
-curl -sLO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && \
-chmod +x kubectl && \
-sudo mv kubectl /usr/local/bin/
-
-echo ">>> Installing kind"
-curl -sSLo kind "https://github.com/kubernetes-sigs/kind/releases/download/$KIND_VERSION/kind-linux-amd64"
-chmod +x kind
-sudo mv kind /usr/local/bin/kind
-
-echo ">>> Creating kind cluster"
-kind create cluster --wait 5m
-
-echo ">>> Installing Helm v3"
-curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash

e2e/build.sh

@@ -1,6 +0,0 @@
-#!/usr/bin/env bash
-
-set -o errexit
-
-docker build -t test/podinfo:latest .
-

e2e/install.sh

@@ -1,13 +0,0 @@
-#!/usr/bin/env bash
-
-set -o errexit
-
-REPO_ROOT=$(git rev-parse --show-toplevel)
-
-echo '>>> Loading image in Kind'
-kind load docker-image test/podinfo:latest
-
-echo '>>> Installing'
-helm upgrade -i podinfo ${REPO_ROOT}/charts/podinfo --namespace=default
-kubectl set image deployment/podinfo podinfo=test/podinfo:latest
-kubectl rollout status deployment/podinfo

e2e/test.sh

@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-
-set -o errexit
-
-function finish {
-  echo '>>> Test logs'
-  kubectl logs -l app=podinfo || true
-}
-trap "finish" EXIT SIGINT
-
-echo '>>> Start integration tests'
-helm test podinfo

go.mod

@@ -1,26 +1,25 @@
 module github.com/stefanprodan/podinfo
 
-go 1.14
+go 1.15
 
 require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
 	github.com/chzyer/logex v1.1.10 // indirect
-	github.com/chzyer/readline v0.0.0-20160726135117-62c6fe619375
+	github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e
 	github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 // indirect
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
-	github.com/fatih/color v1.7.0
-	github.com/fsnotify/fsnotify v1.4.7
-	github.com/go-chi/chi v4.0.3+incompatible // indirect
-	github.com/gorilla/mux v1.7.4
+	github.com/fatih/color v1.9.0
+	github.com/fsnotify/fsnotify v1.4.9
+	github.com/gomodule/redigo v1.8.2
+	github.com/gorilla/mux v1.8.0
 	github.com/gorilla/websocket v1.4.2
-	github.com/hashicorp/go-getter v1.4.1
-	github.com/prometheus/client_golang v1.5.1
-	github.com/spf13/cobra v0.0.6
+	github.com/prometheus/client_golang v1.8.0
+	github.com/spf13/cobra v1.1.1
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.6.2
-	github.com/swaggo/http-swagger v0.0.0-20190614090009-c2865af9083e
-	github.com/swaggo/swag v1.6.5
-	go.uber.org/zap v1.10.0
-	golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297
-	google.golang.org/grpc v1.23.0
+	github.com/spf13/viper v1.7.1
+	github.com/swaggo/http-swagger v0.0.0-20200308142732-58ac5e232fba
+	github.com/swaggo/swag v1.6.9
+	go.uber.org/zap v1.16.0
+	golang.org/x/net v0.0.0-20201027133719-8eef5233e2a1
+	google.golang.org/grpc v1.33.1
 )

go.sum

@@ -3,67 +3,110 @@ cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
 cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
 cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
-cloud.google.com/go v0.45.1 h1:lRi0CHyU+ytlvylOlFKKq0af6JncuyoRh1J+QJBqQx0=
 cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3 h1:AVXDdKsrtX33oR9fbCMu/+c1o8Ofjq6Ku/MInaLVg5Y=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go/bigquery v1.0.1 h1:hL+ycaJpVE9M7nLoiXb/Pn10ENE2u+oddxbD8uu0ZVU=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/datastore v1.0.0 h1:Kt+gOPPp2LEPWp8CSfxhsM8ik9CcyE/gYu+0r+RnZvM=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/pubsub v1.0.1 h1:W9tAK3E57P75u0XLLR82LZyw8VpAnhmyTOxW9qzmyj8=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/storage v1.0.0 h1:VV2nUM3wwLLGh9lSABFgZMjInyUbJeaRSE64WuAIQ+4=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
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kustomize/deployment.yaml

@@ -2,8 +2,6 @@ apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: podinfo
-  labels:
-    app: podinfo
 spec:
   minReadySeconds: 3
   revisionHistoryLimit: 5
@@ -25,7 +23,7 @@ spec:
     spec:
       containers:
       - name: podinfod
-        image: stefanprodan/podinfo:3.2.1
+        image: ghcr.io/stefanprodan/podinfo:5.0.3
         imagePullPolicy: IfNotPresent
         ports:
         - name: http

kustomize/hpa.yaml

@@ -1,4 +1,4 @@
-apiVersion: autoscaling/v2beta1
+apiVersion: autoscaling/v2beta2
 kind: HorizontalPodAutoscaler
 metadata:
   name: podinfo
@@ -13,6 +13,8 @@ spec:
   - type: Resource
     resource:
       name: cpu
-      # scale up if usage is above
-      # 99% of the requested CPU (100m)
-      targetAverageUtilization: 99
+      target:
+        type: Utilization
+        # scale up if usage is above
+        # 99% of the requested CPU (100m)
+        averageUtilization: 99

kustomize/kustomization.yaml

@@ -1,4 +1,7 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
 resources:
   - hpa.yaml
   - deployment.yaml
   - service.yaml
+

kustomize/service.yaml

@@ -2,8 +2,6 @@ apiVersion: v1
 kind: Service
 metadata:
   name: podinfo
-  labels:
-    app: podinfo
 spec:
   type: ClusterIP
   selector:

pkg/api/cache.go

@@ -0,0 +1,150 @@
+package api
+
+import (
+	"io/ioutil"
+	"net/http"
+	"time"
+
+	"github.com/gomodule/redigo/redis"
+	"github.com/gorilla/mux"
+	"go.uber.org/zap"
+
+	"github.com/stefanprodan/podinfo/pkg/version"
+)
+
+// Cache godoc
+// @Summary Save payload in cache
+// @Description writes the posted content in cache
+// @Tags HTTP API
+// @Accept json
+// @Produce json
+// @Router /cache/{key} [post]
+// @Success 202
+func (s *Server) cacheWriteHandler(w http.ResponseWriter, r *http.Request) {
+	if s.pool == nil {
+		s.ErrorResponse(w, r, "cache server is offline", http.StatusBadRequest)
+		return
+	}
+
+	key := mux.Vars(r)["key"]
+	body, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		s.ErrorResponse(w, r, "reading the request body failed", http.StatusBadRequest)
+		return
+	}
+
+	conn := s.pool.Get()
+	defer conn.Close()
+	_, err = conn.Do("SET", key, string(body))
+	if err != nil {
+		s.logger.Warn("cache set failed", zap.Error(err))
+		s.ErrorResponse(w, r, "cache set failed", http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusAccepted)
+}
+
+// Cache godoc
+// @Summary Delete payload from cache
+// @Description deletes the key and its value from cache
+// @Tags HTTP API
+// @Accept json
+// @Produce json
+// @Router /cache/{key} [delete]
+// @Success 202
+func (s *Server) cacheDeleteHandler(w http.ResponseWriter, r *http.Request) {
+	if s.pool == nil {
+		s.ErrorResponse(w, r, "cache server is offline", http.StatusBadRequest)
+		return
+	}
+
+	key := mux.Vars(r)["key"]
+
+	conn := s.pool.Get()
+	defer conn.Close()
+	_, err := conn.Do("DEL", key)
+	if err != nil {
+		s.logger.Warn("cache delete failed", zap.Error(err))
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	w.WriteHeader(http.StatusAccepted)
+}
+
+// Cache godoc
+// @Summary Get payload from cache
+// @Description returns the content from cache if key exists
+// @Tags HTTP API
+// @Accept json
+// @Produce json
+// @Router /cache/{key} [get]
+// @Success 200 {string} string value
+func (s *Server) cacheReadHandler(w http.ResponseWriter, r *http.Request) {
+	if s.pool == nil {
+		s.ErrorResponse(w, r, "cache server is offline", http.StatusBadRequest)
+		return
+	}
+
+	key := mux.Vars(r)["key"]
+
+	conn := s.pool.Get()
+	defer conn.Close()
+
+	ok, err := redis.Bool(conn.Do("EXISTS", key))
+	if err != nil || !ok {
+		s.logger.Warn("cache key not found", zap.String("key", key))
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	data, err := redis.String(conn.Do("GET", key))
+	if err != nil {
+		s.logger.Warn("cache get failed", zap.Error(err))
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(data))
+}
+
+func (s *Server) startCachePool(ticker *time.Ticker, stopCh <-chan struct{}) {
+	if s.config.CacheServer == "" {
+		return
+	}
+	s.pool = &redis.Pool{
+		MaxIdle:     3,
+		IdleTimeout: 240 * time.Second,
+		Dial: func() (redis.Conn, error) {
+			return redis.Dial("tcp", s.config.CacheServer)
+		},
+		TestOnBorrow: func(c redis.Conn, t time.Time) error {
+			_, err := c.Do("PING")
+			return err
+		},
+	}
+
+	// set <hostname>=<version> with an expiry time of one minute
+	setVersion := func() {
+		conn := s.pool.Get()
+		if _, err := conn.Do("SET", s.config.Hostname, version.VERSION, "EX", 60); err != nil {
+			s.logger.Warn("cache server is offline", zap.Error(err), zap.String("server", s.config.CacheServer))
+		}
+		_ = conn.Close()
+	}
+
+	// set version on a schedule
+	go func() {
+		setVersion()
+		for {
+			select {
+			case <-stopCh:
+				return
+			case <-ticker.C:
+				setVersion()
+			}
+		}
+	}()
+}

pkg/api/delay.go

@@ -1,6 +1,7 @@
 package api
 
 import (
+	"math/rand"
 	"net/http"
 
 	"strconv"
@@ -9,6 +10,39 @@ import (
 	"github.com/gorilla/mux"
 )
 
+type RandomDelayMiddleware struct {
+	min  int
+	max  int
+	unit string
+}
+
+func NewRandomDelayMiddleware(minDelay, maxDelay int, delayUnit string) *RandomDelayMiddleware {
+	return &RandomDelayMiddleware{
+		min:  minDelay,
+		max:  maxDelay,
+		unit: delayUnit,
+	}
+}
+
+func (m *RandomDelayMiddleware) Handler(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		var unit time.Duration
+		rand.Seed(time.Now().Unix())
+		switch m.unit {
+		case "s":
+			unit = time.Second
+		case "ms":
+			unit = time.Millisecond
+		default:
+			unit = time.Second
+		}
+
+		delay := rand.Intn(m.max-m.min) + m.min
+		time.Sleep(time.Duration(delay) * unit)
+		next.ServeHTTP(w, r)
+	})
+}
+
 // Delay godoc
 // @Summary Delay
 // @Description waits for the specified period

pkg/api/docs/docs.go

@@ -1,12 +1,12 @@
 // GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
-// This file was generated by swaggo/swag at
-// 2019-08-07 15:52:23.918713 +0300 EEST m=+0.023438272
+// This file was generated by swaggo/swag
 
 package docs
 
 import (
 	"bytes"
 	"encoding/json"
+	"strings"
 
 	"github.com/alecthomas/template"
 	"github.com/swaggo/swag"
@@ -16,8 +16,8 @@ var doc = `{
     "schemes": {{ marshal .Schemes }},
     "swagger": "2.0",
     "info": {
-        "description": "Go microservice template for Kubernetes.",
-        "title": "Podinfo API",
+        "description": "{{.Description}}",
+        "title": "{{.Title}}",
         "contact": {
             "name": "Source Code",
             "url": "https://github.com/stefanprodan/podinfo"
@@ -26,10 +26,10 @@ var doc = `{
             "name": "MIT License",
             "url": "https://github.com/stefanprodan/podinfo/blob/master/LICENSE"
         },
-        "version": "2.0"
+        "version": "{{.Version}}"
     },
-    "host": "localhost:9898",
-    "basePath": "/",
+    "host": "{{.Host}}",
+    "basePath": "{{.BasePath}}",
     "paths": {
         "/": {
             "get": {
@@ -68,7 +68,6 @@ var doc = `{
                     "202": {
                         "description": "Accepted",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -92,13 +91,67 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.RuntimeResponse"
                         }
                     }
                 }
             }
         },
+        "/cache/{key}": {
+            "get": {
+                "description": "returns the content from cache if key exists",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "HTTP API"
+                ],
+                "summary": "Get payload from cache",
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "type": "string"
+                        }
+                    }
+                }
+            },
+            "post": {
+                "description": "writes the posted content in cache",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "HTTP API"
+                ],
+                "summary": "Save payload in cache",
+                "responses": {
+                    "202": {}
+                }
+            },
+            "delete": {
+                "description": "deletes the key and its value from cache",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "HTTP API"
+                ],
+                "summary": "Delete payload from cache",
+                "responses": {
+                    "202": {}
+                }
+            }
+        },
         "/chunked/{seconds}": {
             "get": {
                 "description": "uses transfer-encoding type chunked to give a partial response and then waits for the specified period",
@@ -116,7 +169,6 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -140,7 +192,6 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -164,8 +215,10 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
-                            "$ref": "#/definitions/api.ArrayResponse"
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            }
                         }
                     }
                 }
@@ -188,8 +241,10 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
-                            "$ref": "#/definitions/api.ArrayResponse"
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            }
                         }
                     }
                 }
@@ -333,7 +388,6 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -357,7 +411,6 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -404,7 +457,6 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.TokenResponse"
                         }
                     }
@@ -428,7 +480,6 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.TokenValidationResponse"
                         }
                     },
@@ -455,7 +506,6 @@ var doc = `{
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -479,7 +529,6 @@ var doc = `{
                     "202": {
                         "description": "Accepted",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -488,13 +537,11 @@ var doc = `{
         }
     },
     "definitions": {
-        "api.ArrayResponse": {
-            "type": "array",
-            "items": {}
-        },
         "api.MapResponse": {
             "type": "object",
-            "additionalProperties": {}
+            "additionalProperties": {
+                "type": "string"
+            }
         },
         "api.RuntimeResponse": {
             "type": "object",
@@ -511,6 +558,9 @@ var doc = `{
                 "hostname": {
                     "type": "string"
                 },
+                "logo": {
+                    "type": "string"
+                },
                 "message": {
                     "type": "string"
                 },
@@ -566,11 +616,21 @@ type swaggerInfo struct {
 }
 
 // SwaggerInfo holds exported Swagger Info so clients can modify it
-var SwaggerInfo = swaggerInfo{Schemes: []string{"http", "https"}}
+var SwaggerInfo = swaggerInfo{
+	Version:     "2.0",
+	Host:        "localhost:9898",
+	BasePath:    "/",
+	Schemes:     []string{"http", "https"},
+	Title:       "Podinfo API",
+	Description: "Go microservice template for Kubernetes.",
+}
 
 type s struct{}
 
 func (s *s) ReadDoc() string {
+	sInfo := SwaggerInfo
+	sInfo.Description = strings.Replace(sInfo.Description, "\n", "\\n", -1)
+
 	t, err := template.New("swagger_info").Funcs(template.FuncMap{
 		"marshal": func(v interface{}) string {
 			a, _ := json.Marshal(v)
@@ -582,7 +642,7 @@ func (s *s) ReadDoc() string {
 	}
 
 	var tpl bytes.Buffer
-	if err := t.Execute(&tpl, SwaggerInfo); err != nil {
+	if err := t.Execute(&tpl, sInfo); err != nil {
 		return doc
 	}
 

pkg/api/docs/swagger.json

@@ -1,4 +1,8 @@
 {
+    "schemes": [
+        "http",
+        "https"
+    ],
     "swagger": "2.0",
     "info": {
         "description": "Go microservice template for Kubernetes.",
@@ -53,7 +57,6 @@
                     "202": {
                         "description": "Accepted",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -77,13 +80,67 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.RuntimeResponse"
                         }
                     }
                 }
             }
         },
+        "/cache/{key}": {
+            "get": {
+                "description": "returns the content from cache if key exists",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "HTTP API"
+                ],
+                "summary": "Get payload from cache",
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "type": "string"
+                        }
+                    }
+                }
+            },
+            "post": {
+                "description": "writes the posted content in cache",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "HTTP API"
+                ],
+                "summary": "Save payload in cache",
+                "responses": {
+                    "202": {}
+                }
+            },
+            "delete": {
+                "description": "deletes the key and its value from cache",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "HTTP API"
+                ],
+                "summary": "Delete payload from cache",
+                "responses": {
+                    "202": {}
+                }
+            }
+        },
         "/chunked/{seconds}": {
             "get": {
                 "description": "uses transfer-encoding type chunked to give a partial response and then waits for the specified period",
@@ -101,7 +158,6 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -125,7 +181,6 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -149,8 +204,10 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
-                            "$ref": "#/definitions/api.ArrayResponse"
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            }
                         }
                     }
                 }
@@ -173,8 +230,10 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
-                            "$ref": "#/definitions/api.ArrayResponse"
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            }
                         }
                     }
                 }
@@ -318,7 +377,6 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -342,7 +400,6 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -389,7 +446,6 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.TokenResponse"
                         }
                     }
@@ -413,7 +469,6 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.TokenValidationResponse"
                         }
                     },
@@ -440,7 +495,6 @@
                     "200": {
                         "description": "OK",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -464,7 +518,6 @@
                     "202": {
                         "description": "Accepted",
                         "schema": {
-                            "type": "object",
                             "$ref": "#/definitions/api.MapResponse"
                         }
                     }
@@ -473,13 +526,11 @@
         }
     },
     "definitions": {
-        "api.ArrayResponse": {
-            "type": "array",
-            "items": {}
-        },
         "api.MapResponse": {
             "type": "object",
-            "additionalProperties": {}
+            "additionalProperties": {
+                "type": "string"
+            }
         },
         "api.RuntimeResponse": {
             "type": "object",
@@ -496,6 +547,9 @@
                 "hostname": {
                     "type": "string"
                 },
+                "logo": {
+                    "type": "string"
+                },
                 "message": {
                     "type": "string"
                 },

pkg/api/docs/swagger.yaml

@@ -1,10 +1,8 @@
 basePath: /
 definitions:
-  api.ArrayResponse:
-    items: {}
-    type: array
   api.MapResponse:
-    additionalProperties: {}
+    additionalProperties:
+      type: string
     type: object
   api.RuntimeResponse:
     properties:
@@ -16,6 +14,8 @@ definitions:
         type: string
       hostname:
         type: string
+      logo:
+        type: string
       message:
         type: string
       num_cpu:
@@ -80,7 +80,6 @@ paths:
           description: Accepted
           schema:
             $ref: '#/definitions/api.MapResponse'
-            type: object
       summary: Echo
       tags:
       - HTTP API
@@ -96,10 +95,46 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/api.RuntimeResponse'
-            type: object
       summary: Runtime information
       tags:
       - HTTP API
+  /cache/{key}:
+    delete:
+      consumes:
+      - application/json
+      description: deletes the key and its value from cache
+      produces:
+      - application/json
+      responses:
+        "202": {}
+      summary: Delete payload from cache
+      tags:
+      - HTTP API
+    get:
+      consumes:
+      - application/json
+      description: returns the content from cache if key exists
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: OK
+          schema:
+            type: string
+      summary: Get payload from cache
+      tags:
+      - HTTP API
+    post:
+      consumes:
+      - application/json
+      description: writes the posted content in cache
+      produces:
+      - application/json
+      responses:
+        "202": {}
+      summary: Save payload in cache
+      tags:
+      - HTTP API
   /chunked/{seconds}:
     get:
       consumes:
@@ -113,7 +148,6 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/api.MapResponse'
-            type: object
       summary: Chunked transfer encoding
       tags:
       - HTTP API
@@ -129,7 +163,6 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/api.MapResponse'
-            type: object
       summary: Delay
       tags:
       - HTTP API
@@ -144,8 +177,9 @@ paths:
         "200":
           description: OK
           schema:
-            $ref: '#/definitions/api.ArrayResponse'
-            type: object
+            items:
+              type: string
+            type: array
       summary: Environment
       tags:
       - HTTP API
@@ -160,8 +194,9 @@ paths:
         "200":
           description: OK
           schema:
-            $ref: '#/definitions/api.ArrayResponse'
-            type: object
+            items:
+              type: string
+            type: array
       summary: Headers
       tags:
       - HTTP API
@@ -257,7 +292,6 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/api.MapResponse'
-            type: object
       summary: Status code
       tags:
       - HTTP API
@@ -274,7 +308,6 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/api.MapResponse'
-            type: object
       summary: Upload file
       tags:
       - HTTP API
@@ -305,7 +338,6 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/api.TokenResponse'
-            type: object
       summary: Generate JWT token
       tags:
       - HTTP API
@@ -321,7 +353,6 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/api.TokenValidationResponse'
-            type: object
         "401":
           description: Unauthorized
           schema:
@@ -339,7 +370,6 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/api.MapResponse'
-            type: object
       summary: Version
       tags:
       - HTTP API
@@ -355,8 +385,10 @@ paths:
           description: Accepted
           schema:
             $ref: '#/definitions/api.MapResponse'
-            type: object
       summary: Echo over websockets
       tags:
       - HTTP API
+schemes:
+- http
+- https
 swagger: "2.0"

pkg/api/http.go

@@ -11,17 +11,6 @@ import (
 	"go.uber.org/zap"
 )
 
-func randomDelayMiddleware(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		min := 0
-		max := 5
-		rand.Seed(time.Now().Unix())
-		delay := rand.Intn(max-min) + min
-		time.Sleep(time.Duration(delay) * time.Second)
-		next.ServeHTTP(w, r)
-	})
-}
-
 func randomErrorMiddleware(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		rand.Seed(time.Now().Unix())

pkg/api/server.go

@@ -3,11 +3,6 @@ package api
 import (
 	"context"
 	"fmt"
-
-	"github.com/swaggo/swag"
-	"golang.org/x/net/http2"
-	"golang.org/x/net/http2/h2c"
-
 	"net/http"
 	_ "net/http/pprof"
 	"os"
@@ -15,13 +10,17 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/gomodule/redigo/redis"
 	"github.com/gorilla/mux"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/spf13/viper"
 	_ "github.com/stefanprodan/podinfo/pkg/api/docs"
 	"github.com/stefanprodan/podinfo/pkg/fscache"
 	httpSwagger "github.com/swaggo/http-swagger"
+	"github.com/swaggo/swag"
 	"go.uber.org/zap"
+	"golang.org/x/net/http2"
+	"golang.org/x/net/http2/h2c"
 )
 
 // @title Podinfo API
@@ -44,11 +43,6 @@ var (
 	watcher *fscache.Watcher
 )
 
-type FluxConfig struct {
-	GitUrl    string `mapstructure:"git-url"`
-	GitBranch string `mapstructure:"git-branch"`
-}
-
 type Config struct {
 	HttpClientTimeout         time.Duration `mapstructure:"http-client-timeout"`
 	HttpServerTimeout         time.Duration `mapstructure:"http-server-timeout"`
@@ -65,16 +59,21 @@ type Config struct {
 	Hostname                  string        `mapstructure:"hostname"`
 	H2C                       bool          `mapstructure:"h2c"`
 	RandomDelay               bool          `mapstructure:"random-delay"`
+	RandomDelayUnit           string        `mapstructure:"random-delay-unit"`
+	RandomDelayMin            int           `mapstructure:"random-delay-min"`
+	RandomDelayMax            int           `mapstructure:"random-delay-max"`
 	RandomError               bool          `mapstructure:"random-error"`
 	Unhealthy                 bool          `mapstructure:"unhealthy"`
 	Unready                   bool          `mapstructure:"unready"`
 	JWTSecret                 string        `mapstructure:"jwt-secret"`
+	CacheServer               string        `mapstructure:"cache-server"`
 }
 
 type Server struct {
 	router *mux.Router
 	logger *zap.Logger
 	config *Config
+	pool   *redis.Pool
 }
 
 func NewServer(config *Config, logger *zap.Logger) (*Server, error) {
@@ -103,8 +102,11 @@ func (s *Server) registerHandlers() {
 	s.router.HandleFunc("/readyz/disable", s.disableReadyHandler).Methods("POST")
 	s.router.HandleFunc("/panic", s.panicHandler).Methods("GET")
 	s.router.HandleFunc("/status/{code:[0-9]+}", s.statusHandler).Methods("GET", "POST", "PUT").Name("status")
-	s.router.HandleFunc("/store", s.storeWriteHandler).Methods("POST")
+	s.router.HandleFunc("/store", s.storeWriteHandler).Methods("POST", "PUT")
 	s.router.HandleFunc("/store/{hash}", s.storeReadHandler).Methods("GET").Name("store")
+	s.router.HandleFunc("/cache/{key}", s.cacheWriteHandler).Methods("POST", "PUT")
+	s.router.HandleFunc("/cache/{key}", s.cacheDeleteHandler).Methods("DELETE")
+	s.router.HandleFunc("/cache/{key}", s.cacheReadHandler).Methods("GET").Name("cache")
 	s.router.HandleFunc("/configs", s.configReadHandler).Methods("GET")
 	s.router.HandleFunc("/token", s.tokenGenerateHandler).Methods("POST")
 	s.router.HandleFunc("/token/validate", s.tokenValidateHandler).Methods("GET")
@@ -135,7 +137,8 @@ func (s *Server) registerMiddlewares() {
 	s.router.Use(httpLogger.Handler)
 	s.router.Use(versionMiddleware)
 	if s.config.RandomDelay {
-		s.router.Use(randomDelayMiddleware)
+		randomDelayer := NewRandomDelayMiddleware(s.config.RandomDelayMin, s.config.RandomDelayMax, s.config.RandomDelayUnit)
+		s.router.Use(randomDelayer.Handler)
 	}
 	if s.config.RandomError {
 		s.router.Use(randomErrorMiddleware)
@@ -176,6 +179,10 @@ func (s *Server) ListenAndServe(stopCh <-chan struct{}) {
 		}
 	}
 
+	// start redis connection pool
+	ticker := time.NewTicker(30 * time.Second)
+	s.startCachePool(ticker, stopCh)
+
 	// run server in background
 	go func() {
 		if err := srv.ListenAndServe(); err != http.ErrServerClosed {
@@ -200,6 +207,11 @@ func (s *Server) ListenAndServe(stopCh <-chan struct{}) {
 	atomic.StoreInt32(&healthy, 0)
 	atomic.StoreInt32(&ready, 0)
 
+	// close cache pool
+	if s.pool != nil {
+		_ = s.pool.Close()
+	}
+
 	s.logger.Info("Shutting down HTTP server", zap.Duration("timeout", s.config.HttpServerShutdownTimeout))
 
 	// wait for Kubernetes readiness probe to remove this instance from the load balancer

pkg/grpc/server.go

@@ -8,6 +8,7 @@ import (
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/health"
 	"google.golang.org/grpc/health/grpc_health_v1"
+	"google.golang.org/grpc/reflection"
 )
 
 type Server struct {
@@ -37,6 +38,7 @@ func (s *Server) ListenAndServe() {
 
 	srv := grpc.NewServer()
 	server := health.NewServer()
+	reflection.Register(srv)
 	grpc_health_v1.RegisterHealthServer(srv, server)
 	server.SetServingStatus(s.config.ServiceName, grpc_health_v1.HealthCheckResponse_SERVING)