ProjectBuildLogAppender.java
/*
* 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.maven.logging;
import org.apache.maven.slf4j.MavenSimpleLogger;
import org.slf4j.MDC;
/**
* Forwards log messages to the client.
*/
public class ProjectBuildLogAppender implements AutoCloseable {
private static final String KEY_PROJECT_ID = "maven.project.id";
private static final ThreadLocal<String> PROJECT_ID = new InheritableThreadLocal<>();
private static final ThreadLocal<String> FORKING_PROJECT_ID = new InheritableThreadLocal<>();
public static String getProjectId() {
return PROJECT_ID.get();
}
public static void setProjectId(String projectId) {
String forkingProjectId = FORKING_PROJECT_ID.get();
if (forkingProjectId != null) {
if (projectId != null) {
projectId = forkingProjectId + "/" + projectId;
} else {
projectId = forkingProjectId;
}
}
if (projectId != null) {
PROJECT_ID.set(projectId);
MDC.put(KEY_PROJECT_ID, projectId);
} else {
PROJECT_ID.remove();
MDC.remove(KEY_PROJECT_ID);
}
}
public static void setForkingProjectId(String forkingProjectId) {
if (forkingProjectId != null) {
FORKING_PROJECT_ID.set(forkingProjectId);
} else {
FORKING_PROJECT_ID.remove();
}
}
public static void updateMdc() {
String id = getProjectId();
if (id != null) {
MDC.put(KEY_PROJECT_ID, id);
} else {
MDC.remove(KEY_PROJECT_ID);
}
}
private final BuildEventListener buildEventListener;
public ProjectBuildLogAppender(BuildEventListener buildEventListener) {
this.buildEventListener = buildEventListener;
MavenSimpleLogger.setLogSink(this::accept);
}
protected void accept(String message) {
String projectId = MDC.get(KEY_PROJECT_ID);
buildEventListener.projectLogMessage(projectId, message);
}
@Override
public void close() throws Exception {
MavenSimpleLogger.setLogSink(null);
}
}