This repository was archived by the owner on Sep 17, 2019. It is now read-only.
Repository navigation
Expand file tree
/
Copy pathsignals.go
More file actions
146 lines (127 loc) · 2.99 KB
/
Copy pathsignals.go
File metadata and controls
146 lines (127 loc) · 2.99 KB
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
package models
import (
"bytes"
"encoding/gob"
"errors"
"fmt"
"github.com/ModuleAB/ModuleAB/server/common"
"time"
"github.com/astaxie/beego"
"github.com/pborman/uuid"
)
const (
CacheSignalPrefix = "Signal_"
)
const (
SignalTypeNothing = iota
SignalTypeDownload
)
var (
ErrorSignalNotFound = errors.New("Signal Not Found")
ErrorSignalBadDataType = errors.New("Bad data type")
)
var (
SignalChannels map[string]chan Signal
)
func init() {
SignalChannels = make(map[string]chan Signal)
}
type Signal map[string]interface{}
func AddSignal(hostId string, signal Signal) (string, error) {
keyName := fmt.Sprintf("%s%s", common.DefaultRedisKey, hostId)
newId := uuid.New()
signal["id"] = newId
var (
buf []byte
err error
)
var v = make([]Signal, 0)
if common.DefaultRedisClient.IsExist(keyName) {
b := common.DefaultRedisClient.Get(keyName)
v, err = fromGob(b.([]byte))
if err != nil {
return "", err
}
beego.Debug("Got from redis:", v)
}
v = append(v, signal)
buf, err = toGob(v)
if err != nil {
return "", err
}
return newId, common.DefaultRedisClient.Put(keyName, buf, 30*time.Minute)
}
func GetSignals(hostId string) []Signal {
keyName := fmt.Sprintf("%s%s", common.DefaultRedisKey, hostId)
b := common.DefaultRedisClient.Get(keyName)
beego.Debug("Got from redis:", b)
v, err := fromGob(b.([]byte))
if err != nil {
beego.Warn(err)
return nil
}
return v
}
func GetSignal(hostId, id string) (Signal, error) {
signals := GetSignals(hostId)
beego.Debug("Signals", signals)
for _, v := range signals {
if v["id"] == id {
return v, nil
}
}
return nil, fmt.Errorf("Got nothing")
}
func TruncateSignals(hostId string) {
keyName := fmt.Sprintf("%s%s", common.DefaultRedisKey, hostId)
common.DefaultRedisClient.Delete(keyName)
}
func DeleteSignal(hostId string, signalId string) error {
keyName := fmt.Sprintf("%s%s", common.DefaultRedisKey, hostId)
if common.DefaultRedisClient.IsExist(keyName) {
v := common.DefaultRedisClient.Get(keyName)
n, ok := v.([]Signal)
if !ok {
return ErrorSignalBadDataType
}
var a = make([]Signal, 0)
for _, v := range n {
if v["id"] != signalId {
a = append(a, v)
}
}
return common.DefaultRedisClient.Put(keyName, a, 30*time.Minute)
}
return ErrorSignalNotFound
}
func NotifySignal(hostId, signalId string) error {
_, ok := SignalChannels[hostId]
if !ok {
SignalChannels[hostId] = make(chan Signal, 1024)
}
signal, err := GetSignal(hostId, signalId)
if err != nil {
return err
}
SignalChannels[hostId] <- signal
return nil
}
func MakeDownloadSignal(path, endpoint, bucket string) Signal {
s := make(Signal)
s["type"] = SignalTypeDownload
s["path"] = path
s["endpoint"] = endpoint
s["bucket"] = bucket
return s
}
func toGob(v interface{}) ([]byte, error) {
var buf bytes.Buffer
err := gob.NewEncoder(&buf).Encode(v)
return buf.Bytes(), err
}
func fromGob(b []byte) ([]Signal, error) {
var v = make([]Signal, 0)
var buf = bytes.NewBuffer(b)
err := gob.NewDecoder(buf).Decode(&v)
return v, err
}