+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
package main
import (
"encoding/json"
- "fmt"
- "log"
+ "io"
"net/http"
+ "strconv"
"sync"
+ "sync/atomic"
+ "time"
+ "git.curoverse.com/arvados.git/sdk/go/ctxlog"
+ "github.com/Sirupsen/logrus"
"golang.org/x/net/websocket"
)
+type wsConn interface {
+ io.ReadWriter
+ Request() *http.Request
+ SetReadDeadline(time.Time) error
+ SetWriteDeadline(time.Time) error
+}
+
type router struct {
- Config *Config
+ Config *wsConfig
+ eventSource eventSource
+ newPermChecker func() permChecker
+
+ handler *handler
+ mux *http.ServeMux
+ setupOnce sync.Once
+
+ lastReqID int64
+ lastReqMtx sync.Mutex
- eventSource eventSource
- mux *http.ServeMux
- setupOnce sync.Once
+ status routerDebugStatus
+}
+
+type routerDebugStatus struct {
+ ReqsReceived int64
+ ReqsActive int64
+}
+
+type debugStatuser interface {
+ DebugStatus() interface{}
}
func (rtr *router) setup() {
- rtr.mux = http.NewServeMux()
- rtr.mux.Handle("/websocket", rtr.makeServer(&handlerV0{
+ rtr.handler = &handler{
PingTimeout: rtr.Config.PingTimeout.Duration(),
QueueSize: rtr.Config.ClientEventQueue,
- }))
- rtr.mux.Handle("/arvados/v1/events.ws", rtr.makeServer(&handlerV1{
- PingTimeout: rtr.Config.PingTimeout.Duration(),
- QueueSize: rtr.Config.ClientEventQueue,
- }))
+ }
+ rtr.mux = http.NewServeMux()
+ rtr.mux.Handle("/websocket", rtr.makeServer(newSessionV0))
+ rtr.mux.Handle("/arvados/v1/events.ws", rtr.makeServer(newSessionV1))
+ rtr.mux.Handle("/debug.json", rtr.jsonHandler(rtr.DebugStatus))
+ rtr.mux.Handle("/status.json", rtr.jsonHandler(rtr.Status))
+
+ health := http.NewServeMux()
+ rtr.mux.Handle("/_health/", rtr.mgmtAuth(health))
+ health.Handle("/_health/ping", rtr.jsonHandler(rtr.HealthFunc(func() error { return nil })))
+ health.Handle("/_health/db", rtr.jsonHandler(rtr.HealthFunc(rtr.eventSource.DBHealth)))
}
-func (rtr *router) makeServer(handler handler) *websocket.Server {
+func (rtr *router) makeServer(newSession sessionFactory) *websocket.Server {
return &websocket.Server{
Handshake: func(c *websocket.Config, r *http.Request) error {
return nil
},
Handler: websocket.Handler(func(ws *websocket.Conn) {
- log.Printf("%v accepted", ws.Request().RemoteAddr)
- sink := rtr.eventSource.NewSink(nil)
- handler.Handle(ws, sink.Channel())
- sink.Stop()
+ t0 := time.Now()
+ log := logger(ws.Request().Context())
+ log.Info("connected")
+
+ stats := rtr.handler.Handle(ws, rtr.eventSource,
+ func(ws wsConn, sendq chan<- interface{}) (session, error) {
+ return newSession(ws, sendq, rtr.eventSource.DB(), rtr.newPermChecker(), &rtr.Config.Client)
+ })
+
+ log.WithFields(logrus.Fields{
+ "elapsed": time.Now().Sub(t0).Seconds(),
+ "stats": stats,
+ }).Info("disconnect")
ws.Close()
- log.Printf("%v disconnected", ws.Request().RemoteAddr)
}),
}
}
+func (rtr *router) newReqID() string {
+ rtr.lastReqMtx.Lock()
+ defer rtr.lastReqMtx.Unlock()
+ id := time.Now().UnixNano()
+ if id <= rtr.lastReqID {
+ id = rtr.lastReqID + 1
+ }
+ return strconv.FormatInt(id, 36)
+}
+
+func (rtr *router) DebugStatus() interface{} {
+ s := map[string]interface{}{
+ "HTTP": rtr.status,
+ "Outgoing": rtr.handler.DebugStatus(),
+ }
+ if es, ok := rtr.eventSource.(debugStatuser); ok {
+ s["EventSource"] = es.DebugStatus()
+ }
+ return s
+}
+
+var pingResponseOK = map[string]string{"health": "OK"}
+
+func (rtr *router) HealthFunc(f func() error) func() interface{} {
+ return func() interface{} {
+ err := f()
+ if err == nil {
+ return pingResponseOK
+ }
+ return map[string]string{
+ "health": "ERROR",
+ "error": err.Error(),
+ }
+ }
+}
+
+func (rtr *router) Status() interface{} {
+ return map[string]interface{}{
+ "Clients": atomic.LoadInt64(&rtr.status.ReqsActive),
+ }
+}
+
func (rtr *router) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
rtr.setupOnce.Do(rtr.setup)
+ atomic.AddInt64(&rtr.status.ReqsReceived, 1)
+ atomic.AddInt64(&rtr.status.ReqsActive, 1)
+ defer atomic.AddInt64(&rtr.status.ReqsActive, -1)
+
+ logger := logger(req.Context()).
+ WithField("RequestID", rtr.newReqID())
+ ctx := ctxlog.Context(req.Context(), logger)
+ req = req.WithContext(ctx)
+ logger.WithFields(logrus.Fields{
+ "remoteAddr": req.RemoteAddr,
+ "reqForwardedFor": req.Header.Get("X-Forwarded-For"),
+ }).Info("accept request")
rtr.mux.ServeHTTP(resp, req)
- j, err := json.Marshal(map[string]interface{}{
- "req": fmt.Sprintf("%+v", req),
+}
+
+func (rtr *router) mgmtAuth(h http.Handler) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ if rtr.Config.ManagementToken == "" {
+ http.Error(w, "disabled", http.StatusNotFound)
+ } else if ah := r.Header.Get("Authorization"); ah == "" {
+ http.Error(w, "authorization required", http.StatusUnauthorized)
+ } else if ah != "Bearer "+rtr.Config.ManagementToken {
+ http.Error(w, "authorization error", http.StatusForbidden)
+ } else {
+ h.ServeHTTP(w, r)
+ }
+ })
+}
+
+func (rtr *router) jsonHandler(fn func() interface{}) http.Handler {
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ logger := logger(r.Context())
+ w.Header().Set("Content-Type", "application/json")
+ enc := json.NewEncoder(w)
+ err := enc.Encode(fn())
+ if err != nil {
+ msg := "encode failed"
+ logger.WithError(err).Error(msg)
+ http.Error(w, msg, http.StatusInternalServerError)
+ }
})
- if err != nil {
- log.Fatal(err)
- }
- log.Print(string(j))
}
projects / arvados.git / blobdiff