content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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 com.alibaba.nacos.client.config.http;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.client.config.impl.HttpSimpleClient.HttpResult;
  import com.alibaba.nacos.client.monitor.MetricsMonitor;
  import io.prometheus.client.Histogram;
  
  import java.io.IOException;
  import java.util.List;
  
  /**
   * MetricsHttpAgent
   *
   * @author Nacos
   */
  public class MetricsHttpAgent implements HttpAgent {
      private HttpAgent httpAgent;
  
      public MetricsHttpAgent(HttpAgent httpAgent) {
          this.httpAgent = httpAgent;
      }
  
      @Override
      public void start() throws NacosException {
          httpAgent.start();
      }
  
      @Override
      public HttpResult httpGet(String path, List<String> headers, List<String> paramValues, String encoding, long readTimeoutMs) throws IOException {
          Histogram.Timer timer = MetricsMonitor.getConfigRequestMonitor("GET", path, "NA");
          HttpResult result = null;
          try {
              result = httpAgent.httpGet(path, headers, paramValues, encoding, readTimeoutMs);
          } catch (IOException e) {
              throw e;
          } finally {
              timer.observeDuration();
              timer.close();
          }
  
          return result;
      }
  
      @Override
      public HttpResult httpPost(String path, List<String> headers, List<String> paramValues, String encoding, long readTimeoutMs) throws IOException {
          Histogram.Timer timer = MetricsMonitor.getConfigRequestMonitor("POST", path, "NA");
          HttpResult result = null;
          try {
              result = httpAgent.httpPost(path, headers, paramValues, encoding, readTimeoutMs);
          } catch (IOException e) {
              throw e;
          } finally {
              timer.observeDuration();
              timer.close();
          }
  
          return result;
      }
  
      @Override
      public HttpResult httpDelete(String path, List<String> headers, List<String> paramValues, String encoding, long readTimeoutMs) throws IOException {
          Histogram.Timer timer = MetricsMonitor.getConfigRequestMonitor("DELETE", path, "NA");
          HttpResult result = null;
          try {
              result = httpAgent.httpDelete(path, headers, paramValues, encoding, readTimeoutMs);
          } catch (IOException e) {
  
              throw e;
          } finally {
              timer.observeDuration();
              timer.close();
          }
  
          return result;
      }
  
      @Override
      public String getName() {
          return httpAgent.getName();
      }
  
      @Override
      public String getNamespace() {
          return httpAgent.getNamespace();
      }
  
      @Override
      public String getTenant() {
          return httpAgent.getTenant();
      }
  
      @Override
      public String getEncode() {
          return httpAgent.getEncode();
      }
  }
  
  