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client_ack.go
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client_ack.go
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package pipeline
import (
"time"
"github.com/elastic/beats/libbeat/beat"
"github.com/elastic/beats/libbeat/common/atomic"
)
type clientACKer struct {
acker
active atomic.Bool
}
func (p *Pipeline) makeACKer(
withProcessors bool,
cfg *beat.ClientConfig,
waitClose time.Duration,
) acker {
var (
bld = p.ackBuilder
acker acker
)
sema := p.eventSema
switch {
case cfg.ACKCount != nil:
acker = bld.createCountACKer(withProcessors, sema, cfg.ACKCount)
case cfg.ACKEvents != nil:
acker = bld.createEventACKer(withProcessors, sema, cfg.ACKEvents)
case cfg.ACKLastEvent != nil:
cb := lastEventACK(cfg.ACKLastEvent)
acker = bld.createEventACKer(withProcessors, sema, cb)
default:
if waitClose <= 0 {
return bld.createPipelineACKer(withProcessors, sema)
}
acker = bld.createCountACKer(withProcessors, sema, func(_ int) {})
}
if waitClose <= 0 {
return acker
}
return newWaitACK(acker, waitClose)
}
func lastEventACK(fn func(interface{})) func([]interface{}) {
return func(events []interface{}) {
fn(events[len(events)-1])
}
}
func (a *clientACKer) lift(acker acker) {
a.active = atomic.MakeBool(true)
a.acker = acker
}
func (a *clientACKer) Active() bool {
return a.active.Load()
}
func (a *clientACKer) close() {
a.active.Store(false)
a.acker.close()
}
func (a *clientACKer) addEvent(event beat.Event, published bool) bool {
if a.active.Load() {
return a.acker.addEvent(event, published)
}
return false
}
func (a *clientACKer) ackEvents(n int) {
a.acker.ackEvents(n)
}
func buildClientCountACK(
pipeline *Pipeline,
canDrop bool,
sema *sema,
mk func(*clientACKer) func(int, int),
) acker {
guard := &clientACKer{}
cb := mk(guard)
guard.lift(makeCountACK(pipeline, canDrop, sema, cb))
return guard
}
func buildClientEventACK(
pipeline *Pipeline,
canDrop bool,
sema *sema,
mk func(*clientACKer) func([]interface{}, int),
) acker {
guard := &clientACKer{}
guard.lift(newEventACK(pipeline, canDrop, sema, mk(guard)))
return guard
}