117 lines
2.8 KiB
Go
117 lines
2.8 KiB
Go
package hookdeliveryforwarder
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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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"sync"
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"github.com/actions/actions-runner-controller/github"
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"github.com/kelseyhightower/envconfig"
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)
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type Config struct {
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Rules StringSlice
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MetricsAddr string
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GitHubConfig github.Config
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Checkpointer Checkpointer
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}
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func (config *Config) InitFlags(fs *flag.FlagSet) {
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if err := envconfig.Process("github", &config.GitHubConfig); 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(&config.MetricsAddr, "metrics-addr", ":8000", "The address the metric endpoint binds to.")
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flag.Var(&config.Rules, "rule", "The rule denotes from where webhook deliveries forwarded and to where they are forwarded. Must be formatted REPO=TARGET where REPO can be just the organization name for a repostory hook or \"owner/repo\" for a repository hook.")
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flag.StringVar(&config.GitHubConfig.Token, "github-token", config.GitHubConfig.Token, "The personal access token of GitHub.")
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flag.Int64Var(&config.GitHubConfig.AppID, "github-app-id", config.GitHubConfig.AppID, "The application ID of GitHub App.")
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flag.Int64Var(&config.GitHubConfig.AppInstallationID, "github-app-installation-id", config.GitHubConfig.AppInstallationID, "The installation ID of GitHub App.")
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flag.StringVar(&config.GitHubConfig.AppPrivateKey, "github-app-private-key", config.GitHubConfig.AppPrivateKey, "The path of a private key file to authenticate as a GitHub App")
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}
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func Run(ctx context.Context, config *Config) {
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c := config.GitHubConfig
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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(ctx)
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fwd, err := New(ghClient, []string(config.Rules))
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if err != nil {
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fmt.Fprintf(os.Stderr, "problem initializing forwarder: %v\n", err)
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os.Exit(1)
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}
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if config.Checkpointer != nil {
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fwd.Checkpointer = config.Checkpointer
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}
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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: config.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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<-ctx.Done()
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cancel()
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}()
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wg.Wait()
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}
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type StringSlice []string
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func (s *StringSlice) String() string {
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if s == nil {
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return ""
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}
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return fmt.Sprintf("%+v", []string(*s))
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}
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func (s *StringSlice) Set(value string) error {
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*s = append(*s, value)
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return nil
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}
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