/*
 * 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 org.apache.hadoop.hive.ql.hooks;

import org.apache.hadoop.hive.ql.exec.TaskRunner;
import org.apache.hadoop.hive.ql.session.SessionState;

/**
 * List all tasks completed.
 *
 * This is used to check tasks executed at runtime for queries containing conditional tasks
 */
public class PrintCompletedTasksHook implements ExecuteWithHookContext {

  @Override
  public void run(HookContext hookContext) {
    if (hookContext.getHookType() == HookContext.HookType.POST_EXEC_HOOK) {
      SessionState.LogHelper console = SessionState.getConsole();
      if (console != null && !hookContext.getQueryPlan().isExplain()) {
        for (TaskRunner runner : hookContext.getCompleteTaskList()) {
          console.printError("RUN: " + runner.getTask());
        }
      }
    }
  }
}
