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rafthttp: support sending v3 snapshot message

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Use snapshotSender to send v3 snapshot message. It puts raft snapshot
message and v3 snapshot into request body, then sends it to the target peer.
When it receives http.StatusNoContent, it knows the message has been
received and processed successfully.

As receiver, snapHandler saves v3 snapshot and then processes the raft snapshot
message, then respond with http.StatusNoContent.
This commit is contained in:
Yicheng Qin
2015-10-11 11:49:52 -07:00
parent 207c92b627
commit 1f21ccf166
9 changed files with 472 additions and 102 deletions
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26
etcdserver/server_test.go
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@ -17,6 +17,7 @@ package etcdserver
import (
"encoding/json"
"fmt"
"io"
"net/http"
"path"
"reflect"
@ -1468,15 +1469,16 @@ func (n *readyNode) Ready() <-chan raft.Ready { return n.readyc }
type nopTransporter struct{}
func (s *nopTransporter) Start() error { return nil }
func (s *nopTransporter) Handler() http.Handler { return nil }
func (s *nopTransporter) Send(m []raftpb.Message) {}
func (s *nopTransporter) AddRemote(id types.ID, us []string) {}
func (s *nopTransporter) AddPeer(id types.ID, us []string) {}
func (s *nopTransporter) RemovePeer(id types.ID) {}
func (s *nopTransporter) RemoveAllPeers() {}
func (s *nopTransporter) UpdatePeer(id types.ID, us []string) {}
func (s *nopTransporter) ActiveSince(id types.ID) time.Time { return time.Time{} }
func (s *nopTransporter) Stop() {}
func (s *nopTransporter) Pause() {}
func (s *nopTransporter) Resume() {}
func (s *nopTransporter) Start() error { return nil }
func (s *nopTransporter) Handler() http.Handler { return nil }
func (s *nopTransporter) Send(m []raftpb.Message) {}
func (s *nopTransporter) AddRemote(id types.ID, us []string) {}
func (s *nopTransporter) AddPeer(id types.ID, us []string) {}
func (s *nopTransporter) RemovePeer(id types.ID) {}
func (s *nopTransporter) RemoveAllPeers() {}
func (s *nopTransporter) UpdatePeer(id types.ID, us []string) {}
func (s *nopTransporter) ActiveSince(id types.ID) time.Time { return time.Time{} }
func (s *nopTransporter) SnapshotReady(rc io.ReadCloser, index uint64) {}
func (s *nopTransporter) Stop() {}
func (s *nopTransporter) Pause() {}
func (s *nopTransporter) Resume() {}