content: /**
   * 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 com.alibaba.flink.utils;
  
  import org.apache.http.HttpResponse;
  import org.apache.http.client.methods.HttpGet;
  import org.apache.http.impl.client.DefaultHttpClient;
  import org.apache.http.util.EntityUtils;
  
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * @author Jark (wuchong.wc@alibaba-inc.com)
   */
  public class MetricsMonitor {
  
      public static String ip;
      public static int port = 8081;
      public static String jobId;
  
      public static Map httpResponse(String url) {
          Map ret;
          try {
              DefaultHttpClient httpClient = new DefaultHttpClient();
              HttpGet getRequest = new HttpGet(url);
              getRequest.addHeader("accept", "application/json");
  
              HttpResponse response = httpClient.execute(getRequest);
  
              if (response.getStatusLine().getStatusCode() != 200) {
                  throw new RuntimeException("Failed : HTTP error code : "
                          + response.getStatusLine().getStatusCode());
              }
  
              String data = EntityUtils.toString(response.getEntity());
  
              ret = (Map) Utils.from_json(data);
  
              httpClient.getConnectionManager().shutdown();
  
          } catch (IOException e) {
              ret = errorMsg(e.getMessage());
          }
          return ret;
      }
  
      public static Map errorMsg(String msg) {
          Map<String, String> error = new HashMap<>();
          error.put("error", msg);
          return error;
      }
  
  
      public static String monitorJob() {
          StringBuilder sb = new StringBuilder();
          String url = String.format("http://%s:%d/jobs/%s", ip, port, jobId);
          Map json = httpResponse(url);
          String jobName = (String) json.get("name");
          String uptime = Utils.prettyUptime(Utils.getInt(json.get("duration"), 0));
          sb.append("job: ").append(jobName).append(" uptime: ").append(uptime).append("\n");
          List<Map> vertices = (List<Map>) json.get("vertices");
          for (Map v : vertices) {
              String name = (String) v.get("name");
              int duration = (int) v.get("duration");
              Map metrics = (Map) v.get("metrics");
              long recv = Utils.parseLong(metrics.get("read-records"));
              long send = Utils.parseLong(metrics.get("write-records"));
              double recvTps = (recv * 1000.0) / duration;
              double sendTps = (send * 1000.0) / duration;
              sb.append(String.format("[<%s> recv_tps: %.2f, send_tps: %.2f]\n", name, recvTps, sendTps));
          }
          sb.append("---------------------------------------------\n");
          return sb.toString();
      }
  
  
      public static void main(String[] args) throws InterruptedException {
          if (args.length < 2) {
              System.out.println("[USAGE] MetricsMonitor <jobmanager-ip> [port] <jobid>");
              return;
          }
  
          ip = args[0];
  
          if (args.length == 3) {
              port = Utils.getInt(args[1], 8081);
              jobId = args[2];
          } else {
              jobId = args[1];
          }
  
          while (true) {
              System.out.println(monitorJob());
              Thread.sleep(1000 * 10);
          }
      }
  
  }
  