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metrics.go
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/
metrics.go
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// Copyright 2020 Google LLC All Rights Reserved.
//
// 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 main
import (
"net/http"
"agones.dev/agones/pkg/metrics"
"github.com/heptiolabs/healthcheck"
prom "github.com/prometheus/client_golang/prometheus"
"go.opencensus.io/plugin/ocgrpc"
"go.opencensus.io/stats/view"
)
func init() {
registerMetricViews()
}
func registerMetricViews() {
if err := view.Register(ocgrpc.DefaultServerViews...); err != nil {
logger.WithError(err).Error("could not register view")
}
}
func setupMetricsRecorder(conf config) (health healthcheck.Handler, closer func()) {
health = healthcheck.NewHandler()
closer = func() {}
// Stackdriver metrics
if conf.Stackdriver {
sd, err := metrics.RegisterStackdriverExporter(conf.GCPProjectID, conf.StackdriverLabels)
if err != nil {
logger.WithError(err).Fatal("Could not register stackdriver exporter")
}
// It is imperative to invoke flush before your main function exits
closer = func() { sd.Flush() }
}
// Prometheus metrics
if conf.PrometheusMetrics {
registry := prom.NewRegistry()
metricHandler, err := metrics.RegisterPrometheusExporter(registry)
if err != nil {
logger.WithError(err).Fatal("Could not register prometheus exporter")
}
http.Handle("/metrics", metricHandler)
health = healthcheck.NewMetricsHandler(registry, "agones")
}
metrics.SetReportingPeriod(conf.PrometheusMetrics, conf.Stackdriver)
return
}