code: /*
   * 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.intel.hibench.flinkbench.util;
  
  import java.io.File;
  import java.io.PrintWriter;
  
  public class BenchLogUtil {
    private static PrintWriter out;
  
    public static void init() throws Exception {
      File file = new File("/tmp/benchlog-flink.txt");
      out = new PrintWriter(file);
    }
  
    public static void logMsg(String msg) {
      try {
        if (out == null) {
          init();
        }
      } catch (Exception e) {
        e.printStackTrace();
      }
      out.println(msg);
      out.flush();
      System.out.println(msg);
    }
  
    public static void close() {
      if (out != null) {
        out.close();
      }
    }
  
    public static void handleError(String msg) {
      System.err.println(msg);
      System.exit(1);
    }
  }
  