forked from elastic/beats
-
Notifications
You must be signed in to change notification settings - Fork 7
/
publish.go
36 lines (30 loc) · 1 KB
/
publish.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
package module
import (
"sync"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/publisher"
)
// PublishChannels publishes the events read from each channel to the given
// publisher client. If the publisher client blocks for any reason then events
// will not be read from the given channels.
//
// This method blocks until all of the channels have been closed
// and are fully read. To stop the method immediately, close the channels and
// close the publisher client to ensure that publishing does not block. This
// may result is some events being discarded.
func PublishChannels(client publisher.Client, cs ...<-chan common.MapStr) {
var wg sync.WaitGroup
// output publishes values from c until c is closed, then calls wg.Done.
output := func(c <-chan common.MapStr) {
defer wg.Done()
for event := range c {
client.PublishEvent(event)
}
}
// Start an output goroutine for each input channel in cs.
wg.Add(len(cs))
for _, c := range cs {
go output(c)
}
wg.Wait()
}