1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package com.oracle.java.testlibrary.dcmd;
  25 
  26 import com.oracle.java.testlibrary.OutputAnalyzer;
  27 
  28 /**
  29  * Abstract base class for Diagnostic Command executors
  30  */
  31 public abstract class CommandExecutor {
  32 
  33     /**
  34      * Execute a diagnostic command
  35      *
  36      * @param cmd The diagnostic command to execute
  37      * @return an {@link jdk.testlibrary.OutputAnalyzer} encapsulating the output of the command
  38      * @throws CommandExecutorException if there is an exception on the "calling side" while trying to execute the
  39      *          Diagnostic Command. Exceptions thrown on the remote side are available as textual representations in
  40      *          stderr, regardless of the specific executor used.
  41      */
  42     public final OutputAnalyzer execute(String cmd) throws CommandExecutorException {
  43         System.out.printf("Running DCMD '%s' through '%s'%n", cmd, this.getClass().getSimpleName());
  44         OutputAnalyzer oa = executeImpl(cmd);
  45 
  46         System.out.println("---------------- stdout ----------------");
  47         System.out.println(oa.getStdout());
  48         System.out.println("---------------- stderr ----------------");
  49         System.out.println(oa.getStderr());
  50         System.out.println("----------------------------------------");
  51         System.out.println();
  52 
  53         return oa;
  54     }
  55 
  56     protected abstract OutputAnalyzer executeImpl(String cmd) throws CommandExecutorException;
  57 }