This repository has been archived by the owner on Nov 5, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 3
/
fsm.go
72 lines (59 loc) · 1.61 KB
/
fsm.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
package edge
import (
"bytes"
"github.com/hashicorp/raft"
"github.com/ronaksoft/rony"
"google.golang.org/protobuf/proto"
"io"
)
/*
Creation Time: 2020 - Feb - 22
Created by: (ehsan)
Maintainers:
1. Ehsan N. Moosa (E2)
Auditor: Ehsan N. Moosa (E2)
Copyright Ronak Software Group 2020
*/
// raftFSM is the finite state machine which will be used when Raft is enabled.
type raftFSM struct {
edge *Server
}
func (fsm raftFSM) Apply(raftLog *raft.Log) interface{} {
raftCmd := acquireRaftCommand()
err := proto.UnmarshalOptions{}.Unmarshal(raftLog.Data, raftCmd)
if err != nil {
return err
}
// We dont execute the command, if we are the sender server
if bytes.Equal(raftCmd.Sender, fsm.edge.serverID) {
releaseRaftCommand(raftCmd)
return rony.ErrRaftExecuteOnLeader
}
dispatchCtx := acquireDispatchCtx(fsm.edge, nil, 0, raftCmd.Sender)
dispatchCtx.FillEnvelope(
raftCmd.Envelope.GetRequestID(), raftCmd.Envelope.GetConstructor(), raftCmd.Envelope.Message,
raftCmd.Envelope.Auth, raftCmd.Envelope.Header...,
)
err = fsm.edge.execute(dispatchCtx, false)
fsm.edge.dispatcher.Done(dispatchCtx)
releaseDispatchCtx(dispatchCtx)
releaseRaftCommand(raftCmd)
return nil
}
func (fsm raftFSM) Snapshot() (raft.FSMSnapshot, error) {
return &raftSnapshot{}, nil
}
func (fsm raftFSM) Restore(rd io.ReadCloser) error {
return nil
}
// raftSnapshot is used for snapshot of Raft logs
type raftSnapshot struct{}
func (s raftSnapshot) Persist(sink raft.SnapshotSink) error {
_, err := sink.Write([]byte{})
if err != nil {
return err
}
return sink.Close()
}
func (s raftSnapshot) Release() {
}