137 lines
3.6 KiB
Go
137 lines
3.6 KiB
Go
package main
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import (
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"context"
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"errors"
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"flag"
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"fmt"
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"net/http"
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"os"
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"os/signal"
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"sync"
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"syscall"
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"github.com/actions-runner-controller/actions-runner-controller/github"
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"github.com/actions-runner-controller/actions-runner-controller/pkg/githubwebhookdeliveryforwarder"
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"github.com/kelseyhightower/envconfig"
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)
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func main() {
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var (
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metricsAddr string
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target string
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repo string
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)
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var c github.Config
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if err := envconfig.Process("github", &c); err != nil {
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fmt.Fprintln(os.Stderr, "Error: Environment variable read failed.")
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}
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flag.StringVar(&metricsAddr, "metrics-addr", ":8000", "The address the metric endpoint binds to.")
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flag.StringVar(&repo, "repo", "", "The owner/name of the repository that has the target hook. If specified, the forwarder will use the first hook configured on the repository as the source.")
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flag.StringVar(&target, "target", "", "The URL of the forwarding target that receives all the forwarded webhooks.")
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flag.StringVar(&c.Token, "github-token", c.Token, "The personal access token of GitHub.")
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flag.Int64Var(&c.AppID, "github-app-id", c.AppID, "The application ID of GitHub App.")
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flag.Int64Var(&c.AppInstallationID, "github-app-installation-id", c.AppInstallationID, "The installation ID of GitHub App.")
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flag.StringVar(&c.AppPrivateKey, "github-app-private-key", c.AppPrivateKey, "The path of a private key file to authenticate as a GitHub App")
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flag.Parse()
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ghClient, err := c.NewClient()
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if err != nil {
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fmt.Fprintln(os.Stderr, "Error: Client creation failed.", err)
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os.Exit(1)
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}
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var wg sync.WaitGroup
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ctx, cancel := context.WithCancel(context.Background())
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fwd := githubwebhookdeliveryforwarder.New(ghClient, target)
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fwd.Repo = repo
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mux := http.NewServeMux()
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mux.HandleFunc("/readyz", fwd.HandleReadyz)
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srv := http.Server{
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Addr: metricsAddr,
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Handler: mux,
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}
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wg.Add(1)
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go func() {
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defer cancel()
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defer wg.Done()
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if err := fwd.Run(ctx); err != nil {
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fmt.Fprintf(os.Stderr, "problem running forwarder: %v\n", err)
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}
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}()
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wg.Add(1)
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go func() {
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defer cancel()
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defer wg.Done()
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go func() {
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<-ctx.Done()
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srv.Shutdown(context.Background())
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}()
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if err := srv.ListenAndServe(); err != nil {
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if !errors.Is(err, http.ErrServerClosed) {
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fmt.Fprintf(os.Stderr, "problem running http server: %v\n", err)
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}
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}
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}()
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go func() {
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<-SetupSignalHandler().Done()
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cancel()
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}()
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wg.Wait()
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}
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/*
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Copyright 2017 The Kubernetes 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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var onlyOneSignalHandler = make(chan struct{})
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var shutdownSignals = []os.Signal{os.Interrupt, syscall.SIGTERM}
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// SetupSignalHandler registers for SIGTERM and SIGINT. A stop channel is returned
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// which is closed on one of these signals. If a second signal is caught, the program
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// is terminated with exit code 1.
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func SetupSignalHandler() context.Context {
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close(onlyOneSignalHandler) // panics when called twice
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ctx, cancel := context.WithCancel(context.Background())
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c := make(chan os.Signal, 2)
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signal.Notify(c, shutdownSignals...)
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go func() {
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<-c
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cancel()
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<-c
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os.Exit(1) // second signal. Exit directly.
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}()
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return ctx
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}
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