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org.apache.logging.log4j.internal.DefaultLogBuilder Maven / Gradle / Ivy
/*
* 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.logging.log4j.internal;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogBuilder;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.Marker;
import org.apache.logging.log4j.message.Message;
import org.apache.logging.log4j.message.SimpleMessage;
import org.apache.logging.log4j.status.StatusLogger;
import org.apache.logging.log4j.util.LambdaUtil;
import org.apache.logging.log4j.util.StackLocatorUtil;
import org.apache.logging.log4j.util.Supplier;
/**
* Collects data for a log event and then logs it. This class should be considered private.
*/
public class DefaultLogBuilder implements LogBuilder {
private static Message EMPTY_MESSAGE = new SimpleMessage("");
private static final String FQCN = DefaultLogBuilder.class.getName();
private static final Logger LOGGER = StatusLogger.getLogger();
private final Logger logger;
private Level level;
private Marker marker;
private Throwable throwable;
private StackTraceElement location;
private volatile boolean inUse;
private long threadId;
public DefaultLogBuilder(Logger logger, Level level) {
this.logger = logger;
this.level = level;
this.threadId = Thread.currentThread().getId();
this.inUse = true;
}
public DefaultLogBuilder(Logger logger) {
this.logger = logger;
this.inUse = false;
this.threadId = Thread.currentThread().getId();
}
/**
* This method should be considered internal. It is used to reset the LogBuilder for a new log message.
* @param level The logging level for this event.
* @return This LogBuilder instance.
*/
public LogBuilder reset(Level level) {
this.inUse = true;
this.level = level;
this.marker = null;
this.throwable = null;
this.location = null;
return this;
}
@Override
public LogBuilder withMarker(Marker marker) {
this.marker = marker;
return this;
}
@Override
public LogBuilder withThrowable(Throwable throwable) {
this.throwable = throwable;
return this;
}
@Override
public LogBuilder withLocation() {
location = StackLocatorUtil.getStackTraceElement(2);
return this;
}
@Override
public LogBuilder withLocation(StackTraceElement location) {
this.location = location;
return this;
}
public boolean isInUse() {
return inUse;
}
@Override
public void log(Message message) {
if (isValid()) {
logMessage(message);
}
}
@Override
public void log(CharSequence message) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message));
}
}
@Override
public void log(String message) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message));
}
}
@Override
public void log(String message, Object... params) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, params));
}
}
@Override
public void log(String message, Supplier... params) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, LambdaUtil.getAll(params)));
}
}
@Override
public void log(Supplier messageSupplier) {
if (isValid()) {
logMessage(messageSupplier.get());
}
}
@Override
public void log(Object message) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message));
}
}
@Override
public void log(String message, Object p0) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0));
}
}
@Override
public void log(String message, Object p0, Object p1) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1));
}
}
@Override
public void log(String message, Object p0, Object p1, Object p2) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2));
}
}
@Override
public void log(String message, Object p0, Object p1, Object p2, Object p3) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3));
}
}
@Override
public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4));
}
}
@Override
public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5));
}
}
@Override
public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5, p6));
}
}
@Override
public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6,
Object p7) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5, p6, p7));
}
}
@Override
public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6,
Object p7, Object p8) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5, p6, p7, p8));
}
}
@Override
public void log(String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6,
Object p7, Object p8, Object p9) {
if (isValid()) {
logMessage(logger.getMessageFactory().newMessage(message, p0, p1, p2, p3, p4, p5, p6, p7, p8, p9));
}
}
@Override
public void log() {
if (isValid()) {
logMessage(EMPTY_MESSAGE);
}
}
private void logMessage(Message message) {
try {
logger.logMessage(level, marker, FQCN, location, message, throwable);
} finally {
inUse = false;
}
}
private boolean isValid() {
if (!inUse) {
LOGGER.warn("Attempt to reuse LogBuilder was ignored. {}",
StackLocatorUtil.getCallerClass(2));
return false ;
}
if (this.threadId != Thread.currentThread().getId()) {
LOGGER.warn("LogBuilder can only be used on the owning thread. {}",
StackLocatorUtil.getCallerClass(2));
return false;
}
return true;
}
}
