/*
* Copyright 2010 the original author or authors.
*
* 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.gradle.logging.internal;
import org.gradle.api.logging.LogLevel;
import org.gradle.api.logging.StandardOutputListener;
import org.gradle.logging.LoggingManagerInternal;
import org.gradle.messaging.concurrent.CompositeStoppable;
import org.gradle.messaging.concurrent.Stoppable;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* @author Hans Dockter
*/
public class DefaultLoggingManager implements LoggingManagerInternal {
private boolean started;
private final StartableLoggingSystem loggingSystem;
private final StartableLoggingSystem stdOutLoggingSystem;
private final StartableLoggingSystem stdErrLoggingSystem;
private final LoggingOutputInternal loggingOutput;
private final Set<StandardOutputListener> stdoutListeners = new LinkedHashSet<StandardOutputListener>();
private final Set<StandardOutputListener> stderrListeners = new LinkedHashSet<StandardOutputListener>();
public DefaultLoggingManager(LoggingSystem loggingSystem, LoggingSystem stdOutLoggingSystem,
LoggingSystem stdErrLoggingSystem, LoggingOutputInternal loggingOutput) {
this.loggingOutput = loggingOutput;
this.loggingSystem = new StartableLoggingSystem(loggingSystem, null);
this.stdOutLoggingSystem = new StartableLoggingSystem(stdOutLoggingSystem, LogLevel.QUIET);
this.stdErrLoggingSystem = new StartableLoggingSystem(stdErrLoggingSystem, LogLevel.ERROR);
}
public DefaultLoggingManager start() {
started = true;
for (StandardOutputListener stdoutListener : stdoutListeners) {
loggingOutput.addStandardOutputListener(stdoutListener);
}
for (StandardOutputListener stderrListener : stderrListeners) {
loggingOutput.addStandardErrorListener(stderrListener);
}
loggingSystem.start();
stdOutLoggingSystem.start();
stdErrLoggingSystem.start();
return this;
}
public DefaultLoggingManager stop() {
try {
new CompositeStoppable(loggingSystem, stdOutLoggingSystem, stdErrLoggingSystem).stop();
for (StandardOutputListener stdoutListener : stdoutListeners) {
loggingOutput.removeStandardOutputListener(stdoutListener);
}
for (StandardOutputListener stderrListener : stderrListeners) {
loggingOutput.removeStandardErrorListener(stderrListener);
}
} finally {
started = false;
}
return this;
}
public DefaultLoggingManager setLevel(LogLevel logLevel) {
loggingSystem.setLevel(logLevel);
return this;
}
public LogLevel getLevel() {
return loggingSystem.level;
}
public LogLevel getStandardOutputCaptureLevel() {
return stdOutLoggingSystem.level;
}
public boolean isStandardOutputCaptureEnabled() {
return getStandardOutputCaptureLevel() != null;
}
public DefaultLoggingManager captureStandardOutput(LogLevel level) {
stdOutLoggingSystem.setLevel(level);
return this;
}
public DefaultLoggingManager captureStandardError(LogLevel level) {
stdErrLoggingSystem.setLevel(level);
return this;
}
public DefaultLoggingManager disableStandardOutputCapture() {
stdOutLoggingSystem.disable();
stdErrLoggingSystem.disable();
return this;
}
public LogLevel getStandardErrorCaptureLevel() {
return stdErrLoggingSystem.level;
}
public void addStandardOutputListener(StandardOutputListener listener) {
if (stdoutListeners.add(listener) && started) {
loggingOutput.addStandardOutputListener(listener);
}
}
public void addStandardErrorListener(StandardOutputListener listener) {
if (stderrListeners.add(listener) && started) {
loggingOutput.addStandardErrorListener(listener);
}
}
public void removeStandardOutputListener(StandardOutputListener listener) {
if (stdoutListeners.remove(listener) && started) {
loggingOutput.removeStandardOutputListener(listener);
}
}
public void removeStandardErrorListener(StandardOutputListener listener) {
if (stderrListeners.remove(listener) && started) {
loggingOutput.removeStandardErrorListener(listener);
}
}
public void addOutputEventListener(OutputEventListener listener) {
loggingOutput.addOutputEventListener(listener);
}
public void removeOutputEventListener(OutputEventListener listener) {
loggingOutput.removeOutputEventListener(listener);
}
public void colorStdOutAndStdErr(boolean colorOutput) {
loggingOutput.colorStdOutAndStdErr(colorOutput);
}
private static class StartableLoggingSystem implements Stoppable {
private final LoggingSystem loggingSystem;
private LogLevel level;
private boolean disable;
private LoggingSystem.Snapshot originalState;
private StartableLoggingSystem(LoggingSystem loggingSystem, LogLevel level) {
this.loggingSystem = loggingSystem;
this.level = level;
}
public void start() {
if (disable) {
originalState = loggingSystem.off();
} else if (level != null) {
originalState = loggingSystem.on(level);
} else {
originalState = loggingSystem.snapshot();
}
}
public void setLevel(LogLevel logLevel) {
if (this.level == logLevel) {
return;
}
this.level = logLevel;
disable = false;
if (originalState == null) {
return;
}
loggingSystem.on(logLevel);
}
public void disable() {
level = null;
disable = true;
if (originalState != null) {
loggingSystem.off();
}
}
public void stop() {
try {
if (originalState != null) {
loggingSystem.restore(originalState);
}
} finally {
originalState = null;
}
}
}
}