/*
* Copyright 2010 JBoss Inc
*
* Licensed 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.drools.guvnor.server.util;
import org.drools.guvnor.client.rpc.LogEntry;
import org.slf4j.LoggerFactory;
import java.util.Date;
/**
* Collects messages for displaying in the GUI as well as providing a logger.
*/
public class LoggingHelper {
private final org.slf4j.Logger log;
static final MessageList messages = new MessageList();
public static LogEntry[] getMessages() {
return messages.getMessages();
}
public static void cleanLog() {
messages.cleanEntry();
}
public static LoggingHelper getLogger(Class<?> cls) {
return new LoggingHelper(cls);
}
private LoggingHelper(Class<?> cls) {
log = LoggerFactory.getLogger(cls);
}
public void info(String message) {
log.info(message);
messages.add(message,
1);
}
public void info(String message,
Throwable error) {
log.info(message,
error);
messages.add(message + " " + error.getMessage(),
1);
}
public void debug(String message) {
log.debug(message);
}
public void error(String message) {
log.error(message);
messages.add(message,
0);
}
public void error(String message,
Throwable error) {
log.error(message,
error);
messages.add(message + " " + error.getMessage(),
0);
}
public void warn(String message) {
log.warn(message);
}
public boolean isDebugEnabled() {
return log.isDebugEnabled();
}
}
class MessageList {
static final int MAX = 500;
LogEntry[] messages = new LogEntry[MAX];
int current = 0;
public MessageList() {
}
public synchronized void add(String message,
int severity) {
LogEntry entry = new LogEntry();
entry.message = message;
entry.timestamp = new Date();
entry.severity = severity;
if (current == MAX) {
current = 0;
}
messages[current++] = entry;
}
public LogEntry[] getMessages() {
//JDK1.5 Incompatible.
//return Arrays.copyOf( messages, current );
LogEntry[] result = new LogEntry[current];
System.arraycopy(messages,
0,
result,
0,
Math.min(messages.length,
current));
return result;
}
public synchronized void cleanEntry() {
messages = new LogEntry[MAX];
current = 0;
}
}