mirror of
https://github.com/fluxcd/flagger.git
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56b6339f8c
This adds a new Checksum field to the canary webhook body, which is a hash of the LastAppliedSpec and TrackedConfigs. This can be used to identify the rollout of a specific configuration, and differentiate between webhooks being sent for different configuration and deployment versions. Signed-off-by: Kevin McDermott <kevin@weave.works>
141 lines
3.0 KiB
Go
141 lines
3.0 KiB
Go
/*
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Copyright 2020 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package controller
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"strconv"
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"time"
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flaggerv1 "github.com/fluxcd/flagger/pkg/apis/flagger/v1beta1"
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"github.com/fluxcd/flagger/pkg/canary"
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)
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func callWebhook(webhook string, payload interface{}, timeout string) error {
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payloadBin, err := json.Marshal(payload)
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if err != nil {
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return err
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}
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hook, err := url.Parse(webhook)
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if err != nil {
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return err
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}
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req, err := http.NewRequest("POST", hook.String(), bytes.NewBuffer(payloadBin))
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if err != nil {
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return err
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}
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req.Header.Set("Content-Type", "application/json")
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if timeout == "" {
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timeout = "10s"
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}
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t, err := time.ParseDuration(timeout)
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if err != nil {
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return err
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}
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ctx, cancel := context.WithTimeout(req.Context(), t)
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defer cancel()
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r, err := http.DefaultClient.Do(req.WithContext(ctx))
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if err != nil {
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return err
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}
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defer r.Body.Close()
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b, err := io.ReadAll(r.Body)
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if err != nil {
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return fmt.Errorf("error reading body: %s", err.Error())
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}
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if r.StatusCode > 202 {
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return errors.New(string(b))
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}
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return nil
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}
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// CallWebhook does a HTTP POST to an external service and
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// returns an error if the response status code is non-2xx
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func CallWebhook(canary flaggerv1.Canary, phase flaggerv1.CanaryPhase, w flaggerv1.CanaryWebhook) error {
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payload := flaggerv1.CanaryWebhookPayload{
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Name: canary.Name,
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Namespace: canary.Namespace,
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Phase: phase,
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Checksum: canaryChecksum(canary),
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}
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if w.Metadata != nil {
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payload.Metadata = *w.Metadata
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}
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if len(w.Timeout) < 2 {
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w.Timeout = "10s"
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}
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return callWebhook(w.URL, payload, w.Timeout)
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}
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func CallEventWebhook(r *flaggerv1.Canary, w flaggerv1.CanaryWebhook, message, eventtype string) error {
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t := time.Now()
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payload := flaggerv1.CanaryWebhookPayload{
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Name: r.Name,
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Namespace: r.Namespace,
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Phase: r.Status.Phase,
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Checksum: canaryChecksum(*r),
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Metadata: map[string]string{
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"eventMessage": message,
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"eventType": eventtype,
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"timestamp": strconv.FormatInt(t.UnixNano()/1000000, 10),
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},
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}
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if w.Metadata != nil {
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for key, value := range *w.Metadata {
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if _, ok := payload.Metadata[key]; ok {
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continue
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}
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payload.Metadata[key] = value
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}
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}
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return callWebhook(w.URL, payload, "5s")
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}
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func canaryChecksum(c flaggerv1.Canary) string {
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canaryFields := struct {
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TrackedConfigs *map[string]string
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LastAppliedSpec string
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}{
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c.Status.TrackedConfigs,
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c.Status.LastAppliedSpec,
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}
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return canary.ComputeHash(canaryFields)
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}
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