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[fanout] Optimize fanout

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This commit is contained in:
paulaan 2019-05-06 21:43:42 +07:00
parent 9c0c9709ff
commit 44115024e2
1 changed files with 11 additions and 11 deletions
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20
messaging/fanout.go
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@ -22,21 +22,21 @@ type Pipeline struct {
chain chan interface{} chain chan interface{}
} }
func (p *Pipeline) Start() { func (p *Pipeline) Start(ctx context.Context) {
go func(pipe *Pipeline) { go func(pipe *Pipeline) {
for { for {
expectationWorkers := len(pipe.chain) expectationWorkers := len(pipe.chain) % MaxWorkers
if expectationWorkers > MaxWorkers { if expectationWorkers >= MaxWorkers {
expectationWorkers = expectationWorkers % MaxWorkers expectationWorkers = 0
}
for _, c := range pipe.workers {
if expectationWorkers < int(c.index) {
break
} }
select { select {
case val := <-pipe.chain: case <-ctx.Done():
go c.stream(val) return
case val, ok := <-pipe.chain:
if !ok {
return
} }
go pipe.workers[expectationWorkers].stream(val)
} }
} }
}(p) }(p)