55 lines
901 B
Go
55 lines
901 B
Go
package zsub
|
|
|
|
import (
|
|
"sync"
|
|
"sync/atomic"
|
|
)
|
|
|
|
type ZGroup struct { // ZGroup
|
|
sync.Mutex
|
|
conns []*ZConn
|
|
offset int32
|
|
chMsg chan string // 组消息即时投递
|
|
ztopic *ZTopic // 所属topic
|
|
}
|
|
|
|
func (g *ZGroup) appendTo(c *ZConn) {
|
|
c.Lock()
|
|
defer c.Unlock()
|
|
topic := g.ztopic.topic
|
|
|
|
// report subscribe topic check
|
|
if c.substoped[topic] != nil {
|
|
return
|
|
}
|
|
|
|
// create new goroutine consumer message
|
|
unsubChan := make(chan int, 0)
|
|
c.substoped[topic] = unsubChan
|
|
g.conns = c.appendTo(g.conns)
|
|
go func() {
|
|
for {
|
|
select {
|
|
case msg, ok := <-g.chMsg:
|
|
if !ok {
|
|
return
|
|
}
|
|
|
|
err := c.send("message", topic, msg)
|
|
if err != nil { // 失败处理
|
|
g.chMsg <- msg
|
|
return
|
|
}
|
|
atomic.AddInt32(&g.offset, 1)
|
|
case <-c.stoped:
|
|
return
|
|
case <-unsubChan:
|
|
c.Lock()
|
|
defer c.Unlock()
|
|
delete(c.substoped, topic)
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
}
|