158 lines
3.6 KiB
Go
158 lines
3.6 KiB
Go
package actionsmetrics
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/*
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Copyright 2022 The actions-runner-controller 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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import (
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"context"
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"fmt"
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"io"
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"net/http"
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"sigs.k8s.io/controller-runtime/pkg/reconcile"
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"github.com/go-logr/logr"
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gogithub "github.com/google/go-github/v47/github"
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ctrl "sigs.k8s.io/controller-runtime"
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"github.com/actions/actions-runner-controller/github"
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)
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type EventHook func(interface{})
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// WebhookServer is a HTTP server that handles workflow_job events sent from GitHub Actions
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type WebhookServer struct {
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Log logr.Logger
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// SecretKeyBytes is the byte representation of the Webhook secret token
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// the administrator is generated and specified in GitHub Web UI.
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SecretKeyBytes []byte
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// GitHub Client to discover runner groups assigned to a repository
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GitHubClient *github.Client
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// When HorizontalRunnerAutoscalerGitHubWebhook handles a request, each EventHook is sent the webhook event
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EventHooks []EventHook
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}
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func (autoscaler *WebhookServer) Reconcile(_ context.Context, request reconcile.Request) (reconcile.Result, error) {
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return ctrl.Result{}, nil
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}
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func (autoscaler *WebhookServer) Handle(w http.ResponseWriter, r *http.Request) {
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var (
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ok bool
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err error
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)
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defer func() {
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if !ok {
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w.WriteHeader(http.StatusInternalServerError)
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if err != nil {
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msg := err.Error()
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if written, err := w.Write([]byte(msg)); err != nil {
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autoscaler.Log.V(1).Error(err, "failed writing http error response", "msg", msg, "written", written)
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}
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}
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}
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}()
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defer func() {
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if r.Body != nil {
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r.Body.Close()
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}
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}()
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// respond ok to GET / e.g. for health check
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if r.Method == http.MethodGet {
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ok = true
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fmt.Fprintln(w, "actions-metrics-server is running")
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return
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}
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var payload []byte
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if len(autoscaler.SecretKeyBytes) > 0 {
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payload, err = gogithub.ValidatePayload(r, autoscaler.SecretKeyBytes)
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if err != nil {
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autoscaler.Log.Error(err, "error validating request body")
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return
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}
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} else {
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payload, err = io.ReadAll(r.Body)
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if err != nil {
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autoscaler.Log.Error(err, "error reading request body")
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return
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}
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}
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webhookType := gogithub.WebHookType(r)
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event, err := gogithub.ParseWebHook(webhookType, payload)
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if err != nil {
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var s string
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if payload != nil {
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s = string(payload)
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}
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autoscaler.Log.Error(err, "could not parse webhook", "webhookType", webhookType, "payload", s)
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return
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}
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log := autoscaler.Log.WithValues(
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"event", webhookType,
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"hookID", r.Header.Get("X-GitHub-Hook-ID"),
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"delivery", r.Header.Get("X-GitHub-Delivery"),
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)
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switch event.(type) {
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case *gogithub.PingEvent:
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ok = true
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w.WriteHeader(http.StatusOK)
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msg := "pong"
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if written, err := w.Write([]byte(msg)); err != nil {
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log.Error(err, "failed writing http response", "msg", msg, "written", written)
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}
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log.Info("handled ping event")
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return
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}
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for _, eventHook := range autoscaler.EventHooks {
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eventHook(event)
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}
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ok = true
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w.WriteHeader(http.StatusOK)
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msg := "ok"
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log.Info(msg)
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if written, err := w.Write([]byte(msg)); err != nil {
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log.Error(err, "failed writing http response", "msg", msg, "written", written)
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}
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}
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