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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
package ephemeral
import (
"fmt"
"github.com/gofrs/uuid"
"github.com/spiral/jobs/v2"
"sync"
)
// Broker run queue using local goroutines.
type Broker struct {
lsn func(event int, ctx interface{})
mu sync.Mutex
wait chan error
stopped chan interface{}
queues map[*jobs.Pipeline]*queue
}
// Listen attaches server event watcher.
func (b *Broker) Listen(lsn func(event int, ctx interface{})) {
b.lsn = lsn
}
// Init configures broker.
func (b *Broker) Init() (bool, error) {
b.queues = make(map[*jobs.Pipeline]*queue)
return true, nil
}
// Register broker pipeline.
func (b *Broker) Register(pipe *jobs.Pipeline) error {
b.mu.Lock()
defer b.mu.Unlock()
if _, ok := b.queues[pipe]; ok {
return fmt.Errorf("queue `%s` has already been registered", pipe.Name())
}
b.queues[pipe] = newQueue(pipe.Integer("maxThreads", 0))
return nil
}
// Serve broker pipelines.
func (b *Broker) Serve() error {
// start consuming
b.mu.Lock()
for _, q := range b.queues {
qq := q
if qq.execPool != nil {
go qq.serve()
}
}
b.wait = make(chan error)
b.stopped = make(chan interface{})
defer close(b.stopped)
b.mu.Unlock()
b.throw(jobs.EventBrokerReady, b)
return <-b.wait
}
// Stop all pipelines.
func (b *Broker) Stop() {
b.mu.Lock()
defer b.mu.Unlock()
if b.wait == nil {
return
}
// stop all consuming
for _, q := range b.queues {
q.stop()
}
close(b.wait)
<-b.stopped
}
// Consume configures pipeline to be consumed. With execPool to nil to disable consuming. Method can be called before
// the service is started!
func (b *Broker) Consume(pipe *jobs.Pipeline, execPool chan jobs.Handler, errHandler jobs.ErrorHandler) error {
b.mu.Lock()
defer b.mu.Unlock()
q, ok := b.queues[pipe]
if !ok {
return fmt.Errorf("undefined queue `%s`", pipe.Name())
}
q.stop()
q.execPool = execPool
q.errHandler = errHandler
if b.wait != nil {
if q.execPool != nil {
go q.serve()
}
}
return nil
}
// Push job into the worker.
func (b *Broker) Push(pipe *jobs.Pipeline, j *jobs.Job) (string, error) {
if err := b.isServing(); err != nil {
return "", err
}
q := b.queue(pipe)
if q == nil {
return "", fmt.Errorf("undefined queue `%s`", pipe.Name())
}
id, err := uuid.NewV4()
if err != nil {
return "", err
}
q.push(id.String(), j, 0, j.Options.DelayDuration())
return id.String(), nil
}
// Stat must consume statistics about given pipeline or return error.
func (b *Broker) Stat(pipe *jobs.Pipeline) (stat *jobs.Stat, err error) {
if err := b.isServing(); err != nil {
return nil, err
}
q := b.queue(pipe)
if q == nil {
return nil, fmt.Errorf("undefined queue `%s`", pipe.Name())
}
return q.stat(), nil
}
// check if broker is serving
func (b *Broker) isServing() error {
b.mu.Lock()
defer b.mu.Unlock()
if b.wait == nil {
return fmt.Errorf("broker is not running")
}
return nil
}
// queue returns queue associated with the pipeline.
func (b *Broker) queue(pipe *jobs.Pipeline) *queue {
b.mu.Lock()
defer b.mu.Unlock()
q, ok := b.queues[pipe]
if !ok {
return nil
}
return q
}
// throw handles service, server and pool events.
func (b *Broker) throw(event int, ctx interface{}) {
if b.lsn != nil {
b.lsn(event, ctx)
}
}
|
