/*
* Copyright 2011 SpringSource
*
* 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.grails.build.logging;
import grails.build.logging.GrailsConsole;
import groovy.util.AntBuilder;
import org.apache.tools.ant.BuildEvent;
import org.apache.tools.ant.BuildLogger;
import org.apache.tools.ant.DefaultLogger;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.ProjectHelper;
import org.apache.tools.ant.types.LogLevel;
import org.apache.tools.ant.util.StringUtils;
/**
* Silences ant builder output.
*
* @author Graeme Rocher
* @since 2.0
*/
public class GrailsConsoleAntBuilder extends AntBuilder {
public GrailsConsoleAntBuilder(Project project) {
super(project);
}
public GrailsConsoleAntBuilder() {
super(createAntProject());
}
/**
* @return Factory method to create new Project instances
*/
@SuppressWarnings("unchecked")
protected static Project createAntProject() {
final Project project = new Project();
final ProjectHelper helper = ProjectHelper.getProjectHelper();
project.addReference(ProjectHelper.PROJECTHELPER_REFERENCE, helper);
helper.getImportStack().addElement("AntBuilder"); // import checks that stack is not empty
addGrailsConsoleBuildListener(project);
project.init();
project.getBaseDir();
return project;
}
public static void addGrailsConsoleBuildListener(Project project) {
final BuildLogger logger = new GrailsConsoleLogger();
logger.setMessageOutputLevel(Project.MSG_INFO);
logger.setOutputPrintStream(System.out);
logger.setErrorPrintStream(System.err);
project.addBuildListener(logger);
GrailsConsole instance = GrailsConsole.getInstance();
project.addBuildListener(new GrailsConsoleBuildListener(instance));
if (!instance.isVerbose()) {
for (Object buildListener : project.getBuildListeners()) {
if (buildListener instanceof BuildLogger) {
((BuildLogger)buildListener).setMessageOutputLevel(LogLevel.ERR.getLevel());
}
}
}
}
private static class GrailsConsoleLogger extends DefaultLogger {
/**
* Name of the current target, if it should
* be displayed on the next message. This is
* set when a target starts building, and reset
* to <code>null</code> after the first message for
* the target is logged.
*/
protected String targetName;
protected GrailsConsole console = GrailsConsole.getInstance();
/**
* Notes the name of the target so it can be logged
* if it generates any messages.
*
* @param event A BuildEvent containing target information.
* Must not be <code>null</code>.
*/
@Override
public void targetStarted(BuildEvent event) {
targetName = event.getTarget().getName();
}
/**
* Resets the current target name to <code>null</code>.
*
* @param event Ignored in this implementation.
*/
@Override
public void targetFinished(BuildEvent event) {
targetName = null;
}
/**
* Logs a message for a target if it is of an appropriate
* priority, also logging the name of the target if this
* is the first message which needs to be logged for the
* target.
*
* @param event A BuildEvent containing message information.
* Must not be <code>null</code>.
*/
@Override
public void messageLogged(BuildEvent event) {
if (event.getPriority() > msgOutputLevel ||
null == event.getMessage() ||
"".equals(event.getMessage().trim())) {
return;
}
if (null != targetName) {
console.verbose(StringUtils.LINE_SEP + targetName + ":");
targetName = null;
}
}
}
}