/
worker.go
75 lines (59 loc) · 1.52 KB
/
worker.go
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package deepend
import (
"flag"
"time"
"github.com/emef/tally/pb"
)
var (
workerQueueSize = flag.Int(
"worker_queue_size", 10, "Worker max queue size")
)
type AggregatorWorker struct {
requests chan *pb.RecordCounterRequest
flushChannel chan<- *CounterAggregator
done chan interface{}
config *AggregatorConfig
}
type AggregatorConfig struct {
FlushEvery time.Duration
}
func CreateAndStartAggregatorWorker(
flushChannel chan<- *CounterAggregator,
config *AggregatorConfig) *AggregatorWorker {
done := make(chan interface{})
requests := make(chan *pb.RecordCounterRequest, *workerQueueSize)
worker := &AggregatorWorker{requests, flushChannel, done, config}
go worker.start()
return worker
}
func (worker *AggregatorWorker) Stop() {
worker.done <- nil
}
func (worker *AggregatorWorker) GetRequestChannel() chan *pb.RecordCounterRequest {
return worker.requests
}
func (worker *AggregatorWorker) start() {
ticker := time.NewTicker(worker.config.FlushEvery)
defer ticker.Stop()
aggregator := NewCounterAggregator()
for {
select {
case request := <-worker.requests:
aggregator.AddInPlace(
request.Name, request.Source, request.EpochMinute, request.Values)
println("aggregated request")
case <-ticker.C:
if !aggregator.IsEmpty() {
worker.flushChannel <- aggregator
aggregator = NewCounterAggregator()
println("flushed aggregator")
}
case <-worker.done:
close(worker.requests)
if !aggregator.IsEmpty() {
worker.flushChannel <- aggregator
}
return
}
}
}