| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You 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 health |
| |
| import ( |
| "context" |
| "github.com/apache/servicecomb-service-center/pkg/gopool" |
| "github.com/apache/servicecomb-service-center/pkg/util" |
| "github.com/apache/servicecomb-service-center/server/metric" |
| "github.com/prometheus/client_golang/prometheus" |
| "runtime" |
| "time" |
| ) |
| |
| const durationReportCPUUsage = 3 * time.Second |
| |
| var ( |
| cpuGauge = prometheus.NewGaugeVec( |
| prometheus.GaugeOpts{ |
| Namespace: metric.FamilyName, |
| Subsystem: "process", |
| Name: "cpu_usage", |
| Help: "Process cpu usage", |
| }, []string{"instance"}) |
| ) |
| |
| func init() { |
| prometheus.MustRegister(cpuGauge) |
| gopool.Go(AutoReportCPUUsage) |
| } |
| |
| func AutoReportCPUUsage(ctx context.Context) { |
| var ( |
| cpuTotal float64 |
| cpuProc float64 |
| cpus = runtime.NumCPU() |
| ) |
| for { |
| select { |
| case <-ctx.Done(): |
| return |
| case <-time.After(durationReportCPUUsage): |
| pt, ct := util.GetProcCPUUsage() |
| cpuGauge.WithLabelValues(metric.InstanceName()).Set( |
| (pt - cpuProc) * float64(cpus) / (ct - cpuTotal)) |
| cpuTotal, cpuProc = ct, pt |
| } |
| } |
| } |