func (p *gceProvider) apiRateLimit(ctx gocontext.Context) error {
metrics.Gauge("travis.worker.vm.provider.gce.rate-limit.queue", int64(p.rateLimitQueueDepth))
startWait := time.Now()
defer metrics.TimeSince("travis.worker.vm.provider.gce.rate-limit", startWait)
atomic.AddUint64(&p.rateLimitQueueDepth, 1)
// This decrements the counter, see the docs for atomic.AddUint64
defer atomic.AddUint64(&p.rateLimitQueueDepth, ^uint64(0))
errCount := 0
for {
ok, err := p.rateLimiter.RateLimit("gce-api", p.rateLimitMaxCalls, p.rateLimitDuration)
if err != nil {
errCount++
if errCount >= 5 {
context.CaptureError(ctx, err)
context.LoggerFromContext(ctx).WithField("err", err).Info("rate limiter errored 5 times")
return err
}
} else {
errCount = 0
}
if ok {
return nil
}
// Sleep for up to 1 second
time.Sleep(time.Millisecond * time.Duration(mathrand.Intn(1000)))
}
}
func (p *gceProvider) apiRateLimit() {
atomic.AddUint64(&p.rateLimitQueueDepth, 1)
metrics.Gauge("travis.worker.vm.provider.gce.rate-limit.queue", int64(p.rateLimitQueueDepth))
startWait := time.Now()
<-p.rateLimiter.C
metrics.TimeSince("travis.worker.vm.provider.gce.rate-limit", startWait)
// This decrements the counter, see the docs for atomic.AddUint64
atomic.AddUint64(&p.rateLimitQueueDepth, ^uint64(0))
}