mirror of https://github.com/knative/caching.git
57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
/*
|
|
Copyright 2019 The Knative Authors
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package metrics
|
|
|
|
import (
|
|
"context"
|
|
"path"
|
|
|
|
"go.opencensus.io/stats"
|
|
"knative.dev/pkg/metrics/metricskey"
|
|
)
|
|
|
|
// Record decides whether to record one measurement via OpenCensus based on the
|
|
// following conditions:
|
|
// 1) No package level metrics config. In this case it just proxies to OpenCensus
|
|
// based on the assumption that users expect the metrics to be recorded when
|
|
// they call this function. Users must ensure metrics config are set before
|
|
// using this function to get expected behavior.
|
|
// 2) The backend is not Stackdriver.
|
|
// 3) The backend is Stackdriver and it is allowed to use custom metrics.
|
|
// 4) The backend is Stackdriver and the metric is "knative_revison" built-in metric.
|
|
func Record(ctx context.Context, ms stats.Measurement) {
|
|
mc := getCurMetricsConfig()
|
|
|
|
// Condition 1)
|
|
if mc == nil {
|
|
stats.Record(ctx, ms)
|
|
return
|
|
}
|
|
|
|
// Condition 2) and 3)
|
|
if !mc.isStackdriverBackend || mc.allowStackdriverCustomMetrics {
|
|
stats.Record(ctx, ms)
|
|
return
|
|
}
|
|
|
|
// Condition 4)
|
|
metricType := path.Join(mc.stackdriverMetricTypePrefix, ms.Measure().Name())
|
|
if metricskey.KnativeRevisionMetrics.Has(metricType) {
|
|
stats.Record(ctx, ms)
|
|
}
|
|
}
|