105 lines
3.0 KiB
Go
105 lines
3.0 KiB
Go
// Copyright 2015 The etcd Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package etcdmain
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import (
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"crypto/tls"
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"io/ioutil"
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defaultLog "log"
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"net"
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"net/http"
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"strings"
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"time"
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"github.com/cockroachdb/cmux"
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"github.com/coreos/etcd/etcdserver"
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"github.com/coreos/etcd/etcdserver/api/v3rpc"
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"google.golang.org/grpc"
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)
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type serveCtx struct {
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l net.Listener
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host string
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secure bool
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insecure bool
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}
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// serve accepts incoming connections on the listener l,
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// creating a new service goroutine for each. The service goroutines
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// read requests and then call handler to reply to them.
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func serve(sctx *serveCtx, s *etcdserver.EtcdServer, tlscfg *tls.Config, handler http.Handler) error {
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logger := defaultLog.New(ioutil.Discard, "etcdhttp", 0)
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<-s.ReadyNotify()
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plog.Info("ready to serve client requests")
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m := cmux.New(sctx.l)
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if sctx.insecure {
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gs := v3rpc.Server(s, nil)
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grpcl := m.Match(cmux.HTTP2())
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go func() { plog.Fatal(gs.Serve(grpcl)) }()
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srvhttp := &http.Server{
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Handler: handler,
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ErrorLog: logger, // do not log user error
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}
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httpl := m.Match(cmux.HTTP1())
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go func() { plog.Fatal(srvhttp.Serve(httpl)) }()
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plog.Noticef("serving insecure client requests on %s, this is strongly discouraged!", sctx.host)
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}
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if sctx.secure {
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gs := v3rpc.Server(s, tlscfg)
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handler = grpcHandlerFunc(gs, handler)
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tlsl := tls.NewListener(m.Match(cmux.Any()), tlscfg)
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// TODO: add debug flag; enable logging when debug flag is set
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srv := &http.Server{
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Handler: handler,
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TLSConfig: tlscfg,
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ErrorLog: logger, // do not log user error
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}
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go func() { plog.Fatal(srv.Serve(tlsl)) }()
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plog.Infof("serving client requests on %s", sctx.host)
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}
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return m.Serve()
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}
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// grpcHandlerFunc returns an http.Handler that delegates to grpcServer on incoming gRPC
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// connections or otherHandler otherwise. Copied from cockroachdb.
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func grpcHandlerFunc(grpcServer *grpc.Server, otherHandler http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.ProtoMajor == 2 && strings.Contains(r.Header.Get("Content-Type"), "application/grpc") {
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grpcServer.ServeHTTP(w, r)
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} else {
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otherHandler.ServeHTTP(w, r)
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}
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})
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}
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func servePeerHTTP(l net.Listener, handler http.Handler) error {
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logger := defaultLog.New(ioutil.Discard, "etcdhttp", 0)
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// TODO: add debug flag; enable logging when debug flag is set
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srv := &http.Server{
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Handler: handler,
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ReadTimeout: 5 * time.Minute,
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ErrorLog: logger, // do not log user error
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}
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return srv.Serve(l)
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}
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