/*
* Copyright 2016 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.internal.logging.services;
import org.gradle.api.logging.LogLevel;
import org.gradle.internal.logging.events.LogLevelChangeEvent;
import org.gradle.internal.logging.events.OutputEvent;
import org.gradle.internal.logging.events.OutputEventListener;
import org.gradle.internal.logging.events.StyledTextOutputEvent;
import java.util.concurrent.atomic.AtomicReference;
/**
* A {@link OutputEventListener} implementation which assigns log levels to text output
* events that have no associated log level. This implementation is thread-safe.
*/
public class TextStreamOutputEventListener implements OutputEventListener {
private final OutputEventListener listener;
private AtomicReference<LogLevel> logLevel = new AtomicReference<LogLevel>(LogLevel.LIFECYCLE);
public TextStreamOutputEventListener(OutputEventListener listener) {
this.listener = listener;
}
public void onOutput(OutputEvent event) {
if (event instanceof StyledTextOutputEvent) {
onTextEvent((StyledTextOutputEvent) event);
} else if (event instanceof LogLevelChangeEvent) {
onLogLevelChange((LogLevelChangeEvent) event);
} else {
throw new IllegalArgumentException();
}
}
private void onLogLevelChange(LogLevelChangeEvent changeEvent) {
logLevel.set(changeEvent.getNewLogLevel());
}
private void onTextEvent(StyledTextOutputEvent textOutputEvent) {
if (textOutputEvent.getLogLevel() != null) {
listener.onOutput(textOutputEvent);
} else {
listener.onOutput(textOutputEvent.withLogLevel(logLevel.get()));
}
}
}