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input.go
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/
input.go
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package tracing
import (
"sync/atomic"
"time"
"github.com/dafanshu/benthos/v3/internal/shutdown"
"github.com/dafanshu/benthos/v3/lib/types"
)
type tracedInput struct {
e *events
ctr *uint64
wrapped types.Input
tChan chan types.Transaction
shutSig *shutdown.Signaller
}
func traceInput(e *events, counter *uint64, i types.Input) types.Input {
t := &tracedInput{
e: e,
ctr: counter,
wrapped: i,
tChan: make(chan types.Transaction),
shutSig: shutdown.NewSignaller(),
}
go t.loop()
return t
}
func (t *tracedInput) loop() {
defer close(t.tChan)
readChan := t.wrapped.TransactionChan()
for {
tran, open := <-readChan
if !open {
return
}
_ = tran.Payload.Iter(func(i int, part types.Part) error {
_ = atomic.AddUint64(t.ctr, 1)
t.e.Add(EventProduce, string(part.Get()))
return nil
})
select {
case t.tChan <- tran:
case <-t.shutSig.CloseNowChan():
// Stop flushing if we fully timed out
return
}
}
}
func (t *tracedInput) TransactionChan() <-chan types.Transaction {
return t.tChan
}
func (t *tracedInput) Connected() bool {
return t.wrapped.Connected()
}
func (t *tracedInput) CloseAsync() {
t.wrapped.CloseAsync()
}
func (t *tracedInput) WaitForClose(timeout time.Duration) error {
err := t.wrapped.WaitForClose(timeout)
t.shutSig.CloseNow()
return err
}