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https://github.com/etcd-io/etcd.git
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fef4a79528
suppose a lease granting request from a follower goes through and followed by a lease look up or renewal, the leader might not apply the lease grant request locally. So the leader might not find the lease from the lease look up or renewal request which will result lease not found error. To fix this issue, we force the leader to apply its pending commited index before looking up lease. FIX #6978
79 lines
2.3 KiB
Go
79 lines
2.3 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 v2http
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import (
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"encoding/json"
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"net/http"
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"github.com/coreos/etcd/etcdserver"
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"github.com/coreos/etcd/etcdserver/api"
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"github.com/coreos/etcd/lease/leasehttp"
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"github.com/coreos/etcd/rafthttp"
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)
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const (
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peerMembersPrefix = "/members"
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)
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// NewPeerHandler generates an http.Handler to handle etcd peer requests.
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func NewPeerHandler(s *etcdserver.EtcdServer) http.Handler {
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var lh http.Handler
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l := s.Lessor()
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if l != nil {
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lh = leasehttp.NewHandler(l, func() <-chan struct{} { return s.ApplyWait() })
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}
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return newPeerHandler(s.Cluster(), s.RaftHandler(), lh)
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}
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func newPeerHandler(cluster api.Cluster, raftHandler http.Handler, leaseHandler http.Handler) http.Handler {
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mh := &peerMembersHandler{
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cluster: cluster,
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}
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mux := http.NewServeMux()
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mux.HandleFunc("/", http.NotFound)
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mux.Handle(rafthttp.RaftPrefix, raftHandler)
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mux.Handle(rafthttp.RaftPrefix+"/", raftHandler)
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mux.Handle(peerMembersPrefix, mh)
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if leaseHandler != nil {
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mux.Handle(leasehttp.LeasePrefix, leaseHandler)
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mux.Handle(leasehttp.LeaseInternalPrefix, leaseHandler)
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}
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mux.HandleFunc(versionPath, versionHandler(cluster, serveVersion))
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return mux
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}
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type peerMembersHandler struct {
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cluster api.Cluster
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}
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func (h *peerMembersHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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if !allowMethod(w, r.Method, "GET") {
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return
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}
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w.Header().Set("X-Etcd-Cluster-ID", h.cluster.ID().String())
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if r.URL.Path != peerMembersPrefix {
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http.Error(w, "bad path", http.StatusBadRequest)
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return
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}
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ms := h.cluster.Members()
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w.Header().Set("Content-Type", "application/json")
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if err := json.NewEncoder(w).Encode(ms); err != nil {
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plog.Warningf("failed to encode members response (%v)", err)
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}
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}
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