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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.tools.messagestore.commands;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.server.queue.QueueEntryImpl;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.QueueEntry;
import org.apache.qpid.server.store.StoreContext;
import org.apache.qpid.tools.messagestore.MessageStoreTool;
import java.util.LinkedList;
import java.util.List;
public class Move extends AbstractCommand
{
/**
* Since the Coopy command is not associated with a real channel we can safely create our own store context
* for use in the few methods that require one.
*/
protected StoreContext _storeContext = new StoreContext();
public Move(MessageStoreTool tool)
{
super(tool);
}
public String help()
{
return "Move messages between queues.";/*\n" +
"The currently selected message set will be moved to the specifed queue.\n" +
"Alternatively the values can be provided on the command line.";*/
}
public String usage()
{
return "move to=<queue> [from=<queue>] [msgids=<msgids eg, 1,2,4-10>]";
}
public String getCommand()
{
return "move";
}
public void execute(String... args)
{
AMQQueue toQueue = null;
AMQQueue fromQueue = _tool.getState().getQueue();
java.util.List<Long> msgids = _tool.getState().getMessages();
if (args.length >= 2)
{
for (String arg : args)
{
if (arg.startsWith("to="))
{
String queueName = arg.substring(arg.indexOf("=") + 1);
toQueue = _tool.getState().getVhost().getQueueRegistry().getQueue(new AMQShortString(queueName));
}
if (arg.startsWith("from="))
{
String queueName = arg.substring(arg.indexOf("=") + 1);
fromQueue = _tool.getState().getVhost().getQueueRegistry().getQueue(new AMQShortString(queueName));
}
if (arg.startsWith("msgids="))
{
String msgidStr = arg.substring(arg.indexOf("=") + 1);
// Record the current message selection
java.util.List<Long> currentIDs = _tool.getState().getMessages();
// Use the ToolState class to perform the messasge parsing
_tool.getState().setMessages(msgidStr);
msgids = _tool.getState().getMessages();
// Reset the original selection of messages
_tool.getState().setMessages(currentIDs);
}
}
}
if (!checkRequirements(fromQueue, toQueue, msgids))
{
return;
}
processIDs(fromQueue, toQueue, msgids);
}
private void processIDs(AMQQueue fromQueue, AMQQueue toQueue, java.util.List<Long> msgids)
{
Long previous = null;
Long start = null;
if (msgids == null)
{
msgids = allMessageIDs(fromQueue);
}
if (msgids == null || msgids.size() == 0)
{
_console.println("No Messages to move.");
return;
}
for (long id : msgids)
{
if (previous != null)
{
if (id == previous + 1)
{
if (start == null)
{
start = previous;
}
}
else
{
if (start != null)
{
//move a range of ids
doCommand(fromQueue, start, id, toQueue);
start = null;
}
else
{
//move a single id
doCommand(fromQueue, id, id, toQueue);
}
}
}
previous = id;
}
if (start != null)
{
//move a range of ids
doCommand(fromQueue, start, previous, toQueue);
}
}
private List<Long> allMessageIDs(AMQQueue fromQueue)
{
List<Long> ids = new LinkedList<Long>();
if (fromQueue != null)
{
List<QueueEntry> messages = fromQueue.getMessagesOnTheQueue();
if (messages != null)
{
for (QueueEntry msg : messages)
{
ids.add(msg.getMessageId());
}
}
}
return ids;
}
protected boolean checkRequirements(AMQQueue fromQueue, AMQQueue toQueue, List<Long> msgids)
{
if (toQueue == null)
{
_console.println("Destination queue not specifed.");
_console.println(usage());
return false;
}
if (fromQueue == null)
{
_console.println("Source queue not specifed.");
_console.println(usage());
return false;
}
return true;
}
protected void doCommand(AMQQueue fromQueue, long start, long id, AMQQueue toQueue)
{
fromQueue.moveMessagesToAnotherQueue(start, id, toQueue.getName().toString(), _storeContext);
}
}
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