HADOOP-2297 System.exit() Handling in hbase shell jar command

Forgot to add new files in last commit


git-svn-id: https://svn.apache.org/repos/asf/lucene/hadoop/trunk/src/contrib/hbase@599714 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael Stack 2007-11-30 07:36:46 +00:00
parent 05d4458b47
commit e24940438a
2 changed files with 110 additions and 0 deletions

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/**
* Copyright 2007 The Apache Software Foundation
*
* 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.hbase.shell;
public class ExitException extends SecurityException {
private static final long serialVersionUID = -8085525076856622991L;
/** Status code */
private int status;
/**
* Constructs an exit exception.
*
* @param status the status code returned via System.exit()
*/
public ExitException(int status) {
this.status = status;
}
/**
* The status code returned by System.exit()
*
* @return the status code returned by System.exit()
*/
public int getStatus() {
return status;
}
}

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/**
* Copyright 2007 The Apache Software Foundation
*
* 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.hbase.shell;
import java.io.IOException;
import java.security.Permission;
import org.apache.hadoop.hbase.Shell;
/**
* This is intended as a replacement for the default system manager. The goal is
* to intercept System.exit calls and make it throw an exception instead so that
* a System.exit in a jar command program does not fully terminate Shell.
*
* @see ExitException
*/
public class ShellSecurityManager extends SecurityManager {
/**
* Override SecurityManager#checkExit. This throws an ExitException(status)
* exception.
*
* @param status the exit status
*/
@SuppressWarnings("static-access")
public void checkExit(int status) {
if (status != 9999) {
// throw new ExitException(status);
// I didn't figure out How can catch the ExitException in shell main.
// So, I just Re-launching the shell.
Shell shell = new Shell();
String[] args = new String[] { String.valueOf(status) };
try {
shell.main(args);
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Override SecurityManager#checkPermission. This does nothing.
*
* @param perm the requested permission.
*/
public void checkPermission(Permission perm) {
}
}