content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. 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
   *
   * https://opensource.org/licenses/Apache-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.tencent.angel.webapp.page;
  
  import com.google.inject.Inject;
  import com.tencent.angel.exception.UnvalidIdStrException;
  import com.tencent.angel.master.app.AMContext;
  import com.tencent.angel.worker.task.TaskId;
  import org.apache.hadoop.yarn.webapp.view.HtmlBlock;
  
  import static com.tencent.angel.webapp.AngelParams.TASK_ID;
  import static org.apache.hadoop.yarn.util.StringHelper.join;
  
  public class TaskCountersBlock extends HtmlBlock {
    final AMContext amContext;
  
    @Inject TaskCountersBlock(AMContext amctx) {
      amContext = amctx;
    }
  
    @Override protected void render(Block html) {
      set(TITLE, join("Angel TaskCountersBlock", $(TASK_ID)));
      String taskIdSr = $(TASK_ID);
      html.h1(taskIdSr);
  
      try {
        TaskId taskId = new TaskId(taskIdSr);
        String taskCounters =
          amContext.getTaskManager().getTask(taskId).getMetrics().get("taskCounters");
        html.pre()._(taskCounters)._();
      } catch (UnvalidIdStrException e) {
        LOG.error("unvalid id string ", e);
      }
    }
  }
  