Fix multi reporter, ensure idempotency

uber-go · Mar 16, 2021 · fb8157a · fb8157a
1 parent 7bdd64e
commit fb8157a
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Showing 3 changed files with 40 additions and 0 deletions.
diff --git a/m3/resource_pool.go b/m3/resource_pool.go
@@ -83,6 +83,10 @@ func (r *resourcePool) releaseProto(proto thrift.TProtocol) {
 }
 
 func (r *resourcePool) releaseMetricSlice(metrics []m3thrift.Metric) {
+	if metrics == nil {
+		return
+	}
+
 	for i := 0; i < len(metrics); i++ {
 		metrics[i].Tags = nil
 	}
@@ -92,5 +96,9 @@ func (r *resourcePool) releaseMetricSlice(metrics []m3thrift.Metric) {
 
 //nolint:unused
 func (r *resourcePool) releaseMetricTagSlice(tags []m3thrift.MetricTag) {
+	if tags == nil {
+		return
+	}
+
 	r.metricSlicePool.Put(tags[:0])
 }
diff --git a/multi/reporter.go b/multi/reporter.go
@@ -141,6 +141,12 @@ func (r *multiCached) AllocateCounter(
 	return multiMetric{counters: metrics}
 }
 
+func (r *multiCached) DeallocateCounter(counter tally.CachedCount) {
+	for _, rep := range r.reporters {
+		rep.DeallocateCounter(counter)
+	}
+}
+
 func (r *multiCached) AllocateGauge(
 	name string,
 	tags map[string]string,
@@ -152,6 +158,12 @@ func (r *multiCached) AllocateGauge(
 	return multiMetric{gauges: metrics}
 }
 
+func (r *multiCached) DeallocateGauge(gauge tally.CachedGauge) {
+	for _, rep := range r.reporters {
+		rep.DeallocateGauge(gauge)
+	}
+}
+
 func (r *multiCached) AllocateTimer(
 	name string,
 	tags map[string]string,
@@ -163,6 +175,12 @@ func (r *multiCached) AllocateTimer(
 	return multiMetric{timers: metrics}
 }
 
+func (r *multiCached) DeallocateTimer(timer tally.CachedTimer) {
+	for _, rep := range r.reporters {
+		rep.DeallocateTimer(timer)
+	}
+}
+
 func (r *multiCached) AllocateHistogram(
 	name string,
 	tags map[string]string,
@@ -175,6 +193,12 @@ func (r *multiCached) AllocateHistogram(
 	return multiMetric{histograms: metrics}
 }
 
+func (r *multiCached) DeallocateHistogram(histogram tally.CachedHistogram) {
+	for _, rep := range r.reporters {
+		rep.DeallocateHistogram(histogram)
+	}
+}
+
 func (r *multiCached) Capabilities() tally.Capabilities {
 	return r.multiBaseReporters.Capabilities()
 }

diff --git a/multi/reporter_test.go b/multi/reporter_test.go
@@ -281,6 +281,8 @@ func (r *capturingStatsReporter) AllocateCounter(
 	}}
 }
 
+func (r *capturingStatsReporter) DeallocateCounter(tally.CachedCount) {}
+
 func (r *capturingStatsReporter) AllocateGauge(
 	name string,
 	tags map[string]string,
@@ -290,6 +292,8 @@ func (r *capturingStatsReporter) AllocateGauge(
 	}}
 }
 
+func (r *capturingStatsReporter) DeallocateGauge(tally.CachedGauge) {}
+
 func (r *capturingStatsReporter) AllocateTimer(
 	name string,
 	tags map[string]string,
@@ -299,6 +303,8 @@ func (r *capturingStatsReporter) AllocateTimer(
 	}}
 }
 
+func (r *capturingStatsReporter) DeallocateTimer(tally.CachedTimer) {}
+
 func (r *capturingStatsReporter) AllocateHistogram(
 	name string,
 	tags map[string]string,
@@ -320,6 +326,8 @@ func (r *capturingStatsReporter) AllocateHistogram(
 	}
 }
 
+func (r *capturingStatsReporter) DeallocateHistogram(tally.CachedHistogram) {}
+
 func (r *capturingStatsReporter) Capabilities() tally.Capabilities {
 	r.capabilities++
 	return r