Serge Bazanski | 3fd70d8 | 2018-10-14 08:12:46 -0700 | [diff] [blame] | 1 | package mirko |
| 2 | |
| 3 | import ( |
Serge Bazanski | aa81aa2 | 2018-10-14 08:36:05 -0700 | [diff] [blame^] | 4 | "context" |
Serge Bazanski | 3fd70d8 | 2018-10-14 08:12:46 -0700 | [diff] [blame] | 5 | "flag" |
| 6 | "fmt" |
| 7 | "net" |
| 8 | "net/http" |
| 9 | "time" |
| 10 | |
| 11 | "code.hackerspace.pl/q3k/hspki" |
| 12 | "github.com/golang/glog" |
| 13 | "github.com/q3k/statusz" |
| 14 | "golang.org/x/net/trace" |
| 15 | "google.golang.org/grpc" |
| 16 | "google.golang.org/grpc/reflection" |
| 17 | ) |
| 18 | |
| 19 | var ( |
| 20 | flagListenAddress string |
| 21 | flagDebugAddress string |
| 22 | ) |
| 23 | |
| 24 | func init() { |
| 25 | flag.StringVar(&flagListenAddress, "listen_address", "127.0.0.1:42000", "gRPC listen address") |
| 26 | flag.StringVar(&flagDebugAddress, "debug_address", "127.0.0.1:42001", "HTTP debug/status listen address") |
Serge Bazanski | aa81aa2 | 2018-10-14 08:36:05 -0700 | [diff] [blame^] | 27 | flag.Set("logtostderr", "true") |
Serge Bazanski | 3fd70d8 | 2018-10-14 08:12:46 -0700 | [diff] [blame] | 28 | } |
| 29 | |
| 30 | type Mirko struct { |
| 31 | grpcListen net.Listener |
| 32 | grpcServer *grpc.Server |
| 33 | httpListen net.Listener |
| 34 | httpServer *http.Server |
| 35 | httpMux *http.ServeMux |
| 36 | } |
| 37 | |
| 38 | func New() *Mirko { |
| 39 | return &Mirko{} |
| 40 | } |
| 41 | |
| 42 | func (m *Mirko) Listen() error { |
| 43 | grpc.EnableTracing = true |
| 44 | grpcLis, err := net.Listen("tcp", flagListenAddress) |
| 45 | if err != nil { |
| 46 | return fmt.Errorf("net.Listen: %v", err) |
| 47 | } |
| 48 | m.grpcListen = grpcLis |
| 49 | m.grpcServer = grpc.NewServer(hspki.WithServerHSPKI()...) |
| 50 | reflection.Register(m.grpcServer) |
| 51 | |
| 52 | httpLis, err := net.Listen("tcp", flagDebugAddress) |
| 53 | if err != nil { |
| 54 | return fmt.Errorf("net.Listen: %v", err) |
| 55 | } |
| 56 | |
| 57 | m.httpMux = http.NewServeMux() |
| 58 | // Canonical URLs |
| 59 | m.httpMux.HandleFunc("/debug/status", statusz.StatusHandler) |
| 60 | m.httpMux.HandleFunc("/debug/requests", trace.Traces) |
| 61 | |
| 62 | // -z legacy URLs |
| 63 | m.httpMux.HandleFunc("/statusz", func(w http.ResponseWriter, r *http.Request) { |
| 64 | http.Redirect(w, r, "/debug/status", http.StatusSeeOther) |
| 65 | }) |
| 66 | m.httpMux.HandleFunc("/rpcz", func(w http.ResponseWriter, r *http.Request) { |
| 67 | http.Redirect(w, r, "/debug/requests", http.StatusSeeOther) |
| 68 | }) |
| 69 | m.httpMux.HandleFunc("/requestz", func(w http.ResponseWriter, r *http.Request) { |
| 70 | http.Redirect(w, r, "/debug/requests", http.StatusSeeOther) |
| 71 | }) |
| 72 | |
| 73 | // root redirect |
| 74 | m.httpMux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { |
| 75 | http.Redirect(w, r, "/debug/status", http.StatusSeeOther) |
| 76 | }) |
| 77 | |
| 78 | m.httpListen = httpLis |
| 79 | m.httpServer = &http.Server{ |
| 80 | Addr: flagDebugAddress, |
| 81 | Handler: m.httpMux, |
| 82 | } |
| 83 | |
| 84 | return nil |
| 85 | } |
| 86 | |
Serge Bazanski | aa81aa2 | 2018-10-14 08:36:05 -0700 | [diff] [blame^] | 87 | func (m *Mirko) Trace(ctx context.Context, f string, args ...interface{}) { |
| 88 | tr, ok := trace.FromContext(ctx) |
| 89 | if !ok { |
| 90 | fmtd := fmt.Sprintf(f, args...) |
| 91 | glog.Warningf("No trace in %v: %s", ctx, fmtd) |
| 92 | return |
| 93 | } |
| 94 | tr.LazyPrintf(f, args...) |
| 95 | } |
| 96 | |
Serge Bazanski | 3fd70d8 | 2018-10-14 08:12:46 -0700 | [diff] [blame] | 97 | func (m *Mirko) GRPC() *grpc.Server { |
| 98 | if m.grpcServer == nil { |
| 99 | panic("GRPC() called before Listen()") |
| 100 | } |
| 101 | return m.grpcServer |
| 102 | } |
| 103 | |
| 104 | func (m *Mirko) HTTPMux() *http.ServeMux { |
| 105 | if m.httpMux == nil { |
| 106 | panic("HTTPMux() called before Listen()") |
| 107 | } |
| 108 | return m.httpMux |
| 109 | } |
| 110 | |
| 111 | func (m *Mirko) Serve() error { |
| 112 | errs := make(chan error, 1) |
| 113 | go func() { |
| 114 | if err := m.grpcServer.Serve(m.grpcListen); err != nil { |
| 115 | errs <- err |
| 116 | } |
| 117 | }() |
| 118 | go func() { |
| 119 | if err := m.httpServer.Serve(m.httpListen); err != nil { |
| 120 | errs <- err |
| 121 | } |
| 122 | }() |
| 123 | |
| 124 | ticker := time.NewTicker(1 * time.Second) |
| 125 | select { |
| 126 | case <-ticker.C: |
| 127 | glog.Infof("gRPC listening on %s", flagListenAddress) |
| 128 | glog.Infof("HTTP listening on %s", flagDebugAddress) |
| 129 | return nil |
| 130 | case err := <-errs: |
| 131 | return err |
| 132 | } |
| 133 | } |