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/*
*
* 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.qpid.server.store.berkeleydb.testclient;
import org.apache.log4j.Logger;
import org.apache.qpid.ping.PingDurableClient;
import org.apache.qpid.server.store.berkeleydb.BDBBackup;
import org.apache.qpid.util.CommandLineParser;
import java.util.Properties;
/**
* BackupTestClient extends {@link PingDurableClient} with an action that takes a BDB backup when a configurable
* message count is reached. This enables a test user to restore this beackup, knowing how many committed but undelivered
* messages were in the backup, in order to check that all are re-delivered when the backup is retored.
*
* <p><table id="crc"><caption>CRC Card</caption>
* <tr><th> Responsibilities <th> Collaborations
* <tr><td> Perform BDB Backup on configurable message count.
* </table>
*/
public class BackupTestClient extends PingDurableClient
{
/** Used for debugging. */
private static final Logger log = Logger.getLogger(BackupTestClient.class);
/** Holds the from directory to take backups from. */
private String fromDir;
/** Holds the to directory to store backups in. */
private String toDir;
/**
* Default constructor, passes all property overrides to the parent.
*
* @param overrides Any property overrides to apply to the defaults.
*
* @throws Exception Any underlying exception is allowed to fall through.
*/
BackupTestClient(Properties overrides) throws Exception
{
super(overrides);
}
/**
* Starts the ping/wait/receive process. From and to directory locations for the BDB backups must be specified
* on the command line:
*
* <p/><table><caption>Command Line</caption>
* <tr><th> Option <th> Comment
* <tr><td> -fromdir <td> The path to the directory to back the bdb log file from.
* <tr><td> -todir <td> The path to the directory to save the backed up bdb log files to.
* </table>
*
* @param args The command line arguments.
*/
public static void main(String[] args)
{
try
{
// Use the same command line format as BDBBackup utility, (compulsory from and to directories).
Properties options =
CommandLineParser.processCommandLine(args, new CommandLineParser(BDBBackup.COMMAND_LINE_SPEC),
System.getProperties());
BackupTestClient pingProducer = new BackupTestClient(options);
// Keep the from and to directories for backups.
pingProducer.fromDir = options.getProperty("fromdir");
pingProducer.toDir = options.getProperty("todir");
// Create a shutdown hook to terminate the ping-pong producer.
Runtime.getRuntime().addShutdownHook(pingProducer.getShutdownHook());
// Ensure that the ping pong producer is registered to listen for exceptions on the connection too.
// pingProducer.getConnection().setExceptionListener(pingProducer);
// Run the test procedure.
int sent = pingProducer.send();
pingProducer.waitForUser("Press return to begin receiving the pings.");
pingProducer.receive(sent);
System.exit(0);
}
catch (Exception e)
{
System.err.println(e.getMessage());
log.error("Top level handler caught execption.", e);
System.exit(1);
}
}
/**
* Supplies a triggered action extension, based on message count. This action takes a BDB log file backup.
*/
public void takeAction()
{
BDBBackup backupUtil = new BDBBackup();
backupUtil.takeBackupNoLock(fromDir, toDir);
System.out.println("Took backup of BDB log files from directory: " + fromDir);
}
}
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