-
Notifications
You must be signed in to change notification settings - Fork 0
/
fsm.go
153 lines (151 loc) · 4.71 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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
package persistence
import (
"github.com/autom8ter/morpheus/pkg/api"
"github.com/autom8ter/morpheus/pkg/encode"
"github.com/autom8ter/morpheus/pkg/graph/fsm"
"github.com/autom8ter/morpheus/pkg/helpers"
"github.com/hashicorp/raft"
"github.com/palantir/stacktrace"
"io"
)
func (d *DB) FSM() raft.FSM {
return &fsm.FSM{
ApplyFunc: func(log *raft.Log) interface{} {
var cmd fsm.CMD
if err := encode.Unmarshal(log.Data, &cmd); err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
switch cmd.Method {
case fsm.MethodAdd:
addNode := cmd.Node
n, err := d.AddNode(addNode.Type, addNode.ID, addNode.Properties)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
return n
case fsm.MethodSet:
addNode := cmd.Node
n, err := d.AddNode(addNode.Type, addNode.ID, addNode.Properties)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
return n
case fsm.MethodDel:
key := cmd.Key
err := d.DelNode(key.Type, key.ID)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
return true
case fsm.MethodBulkDel:
keys := cmd.Keys
for _, key := range keys {
err := d.DelNode(key.Type, key.ID)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
}
return true
case fsm.MethodBulkSet:
sets := cmd.SetNodes
for _, set := range sets {
_, err := d.AddNode(set.Type, set.ID, set.Properties)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
}
return true
case fsm.MethodBulkAdd:
adds := cmd.AddNodes
for _, add := range adds {
_, err := d.AddNode(add.Type, *add.ID, add.Properties)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
}
return true
case fsm.MethodNodeSetProperties:
var (
sourceType = cmd.Metadata["type"]
sourceID = cmd.Metadata["id"]
)
if sourceType == "" || sourceID == "" {
return stacktrace.NewError("bad raft cmd")
}
props := cmd.Properties
n, err := d.GetNode(sourceType, sourceID)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
if err := n.SetProperties(props); err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
return n
case fsm.MethodNodeAddRelation:
key := cmd.Key
var (
sourceType = cmd.Metadata["source.type"]
sourceID = cmd.Metadata["source.id"]
relation = cmd.Metadata["relation"]
direction = cmd.Metadata["direction"]
)
if sourceType == "" || sourceID == "" || relation == "" || direction == "" {
return stacktrace.NewError("bad raft cmd")
}
source, err := d.GetNode(sourceType, sourceID)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
target, err := d.GetNode(key.Type, key.ID)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
rel, err := source.AddRelation(api.Direction(direction), relation, cmd.Properties, target)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
return rel
case fsm.MethodNodeDelRelation:
var (
sourceType = cmd.Metadata["type"]
sourceID = cmd.Metadata["id"]
)
key := cmd.Key
source, err := d.GetNode(sourceType, sourceID)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
err = source.DelRelation(key.Type, key.ID)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
return true
case fsm.MethodRelationSetProperties:
var (
sourceType = cmd.Metadata["type"]
sourceID = cmd.Metadata["id"]
)
if sourceType == "" || sourceID == "" {
return stacktrace.NewError("bad raft cmd")
}
props := cmd.Properties
rel, err := d.GetRelation(sourceType, sourceID)
if err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
if err := rel.SetProperties(props); err != nil {
return stacktrace.Propagate(err, "command = %s", helpers.JSONString(cmd))
}
return rel
default:
return stacktrace.NewError("unknown method: %s", cmd.Method)
}
},
SnapshotFunc: func() (*fsm.Snapshot, error) {
return nil, stacktrace.NewError("unimplemented")
},
RestoreFunc: func(closer io.ReadCloser) error {
return stacktrace.NewError("unimplemented")
},
}
}