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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.logging.actors;
import org.apache.qpid.server.logging.LogMessage;
import org.apache.qpid.server.logging.LogSubject;
import org.apache.qpid.server.logging.RootMessageLogger;
import java.text.MessageFormat;
/**
* NOTE: This actor is not thread safe.
*
* Sharing of a ManagementActor instance between threads may result in an
* incorrect actor value being logged.
*
* This is due to the fact that calls to message will dynamically query the
* thread name and use that to set the log format during each message() call.
*
* This is currently not an issue as each MBean operation creates a new Actor
* that is unique for each operation.
*/
public class ManagementActor extends AbstractActor
{
String _lastThreadName = null;
/**
* LOG FORMAT for the ManagementActor,
* Uses a MessageFormat call to insert the requried values according to
* these indicies:
*
* 0 - Connection ID
* 1 - User ID
* 2 - IP
*/
public static final String MANAGEMENT_FORMAT = "mng:{0}({1})";
/**
* The logString to be used for logging
*/
private String _logString;
/** @param rootLogger The RootLogger to use for this Actor */
public ManagementActor(RootMessageLogger rootLogger)
{
super(rootLogger);
}
private void updateLogString()
{
String currentName = Thread.currentThread().getName();
String actor;
// Record the last thread name so we don't have to recreate the log string
if (!currentName.equals(_lastThreadName))
{
_lastThreadName = currentName;
// Management Thread names have this format.
//RMI TCP Connection(2)-169.24.29.116
// This is true for both LocalAPI and JMX Connections
// However to be defensive lets test.
String[] split = currentName.split("\\(");
if (split.length == 2)
{
String connectionID = split[1].split("\\)")[0];
String ip = currentName.split("-")[1];
actor = MessageFormat.format(MANAGEMENT_FORMAT,
connectionID,
ip);
}
else
{
// This is a precautionary path as it is not expected to occur
// however rather than adjusting the thread name of the two
// tests that will use this it is safer all round to do this.
// it is also currently used by tests :
// AMQBrokerManagerMBeanTest
// ExchangeMBeanTest
actor = currentName;
}
_logString = "[" + actor + "] ";
}
}
public String getLogMessage()
{
updateLogString();
return _logString;
}
}
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