github.com/polarismesh/polaris@v1.17.8/common/metrics/default.go (about)

     1  /**
     2   * Tencent is pleased to support the open source community by making Polaris available.
     3   *
     4   * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
     5   *
     6   * Licensed under the BSD 3-Clause License (the "License");
     7   * you may not use this file except in compliance with the License.
     8   * You may obtain a copy of the License at
     9   *
    10   * https://opensource.org/licenses/BSD-3-Clause
    11   *
    12   * Unless required by applicable law or agreed to in writing, software distributed
    13   * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
    14   * CONDITIONS OF ANY KIND, either express or implied. See the License for the
    15   * specific language governing permissions and limitations under the License.
    16   */
    17  
    18  package metrics
    19  
    20  import (
    21  	"net/http"
    22  
    23  	"github.com/prometheus/client_golang/prometheus"
    24  	"github.com/prometheus/client_golang/prometheus/collectors"
    25  	"github.com/prometheus/client_golang/prometheus/promhttp"
    26  )
    27  
    28  var (
    29  	registry = prometheus.NewRegistry()
    30  )
    31  
    32  // GetRegistry 获取 metrics 的 registry
    33  func GetRegistry() *prometheus.Registry {
    34  	return registry
    35  }
    36  
    37  // GetHttpHandler 获取 handler
    38  func GetHttpHandler() http.Handler {
    39  	// 添加 Golang runtime metrics
    40  	registry.MustRegister(collectors.NewGoCollector(
    41  		collectors.WithGoCollections(collectors.GoRuntimeMetricsCollection),
    42  	))
    43  	return promhttp.HandlerFor(registry, promhttp.HandlerOpts{EnableOpenMetrics: true})
    44  }
    45  
    46  var (
    47  	metricsPort int32
    48  )
    49  
    50  func SetMetricsPort(port int32) {
    51  	metricsPort = port
    52  }
    53  
    54  func GetMetricsPort() int32 {
    55  	return metricsPort
    56  }
    57  
    58  // InitMetrics 初始化 metrics 的所有指标
    59  func InitMetrics() {
    60  	registerSysMetrics()
    61  	registerClientMetrics()
    62  	registerConfigFileMetrics()
    63  	registerDiscoveryMetrics()
    64  }