/*******************************************************************************
* Copyright (c) 2009, 2014 Mountainminds GmbH & Co. KG and Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Mads Mohr Christensen - implementation of MergeMojo
*
*******************************************************************************/
package org.jacoco.maven;
import java.io.File;
import java.io.IOException;
import java.util.List;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.shared.model.fileset.FileSet;
import org.apache.maven.shared.model.fileset.util.FileSetManager;
import org.jacoco.core.tools.ExecFileLoader;
/**
* Mojo for merging a set of execution data files (*.exec) into a single file
*
* @phase generate-resources
* @goal merge
* @requiresProject true
* @threadSafe
* @since 0.6.4
*/
public class MergeMojo extends AbstractJacocoMojo {
private static final String MSG_SKIPPING = "Skipping JaCoCo merge execution due to missing execution data files";
/**
* Path to the output file for execution data.
*
* @parameter property="jacoco.destFile"
* default-value="${project.build.directory}/jacoco.exec"
*/
private File destFile;
/**
* This mojo accepts any number of execution data file sets.
*
* Note that you need an <tt>implementation</tt> hint on <tt>fileset</tt>
* with Maven 2 (not needed with Maven 3):
*
* <pre>
* <code>
* <fileSets>
* <fileSet implementation="org.apache.maven.shared.model.fileset.FileSet">
* <directory>${project.parent.build.directory}</directory>
* <includes>
* <include>*.exec</include>
* </includes>
* </fileSet>
* </fileSets>
* </code>
* </pre>
*
* @parameter property="jacoco.fileSets"
* @required
*/
private List<FileSet> fileSets;
@Override
protected void executeMojo() throws MojoExecutionException,
MojoFailureException {
if (!canMergeReports()) {
return;
}
executeMerge();
}
private boolean canMergeReports() {
if (fileSets == null || fileSets.isEmpty()) {
getLog().info(MSG_SKIPPING);
return false;
}
return true;
}
private void executeMerge() throws MojoExecutionException {
final ExecFileLoader loader = new ExecFileLoader();
load(loader);
save(loader);
}
private void load(final ExecFileLoader loader)
throws MojoExecutionException {
final FileSetManager fileSetManager = new FileSetManager(getLog());
for (final FileSet fileSet : fileSets) {
for (final String includedFilename : fileSetManager
.getIncludedFiles(fileSet)) {
final File inputFile = new File(fileSet.getDirectory(),
includedFilename);
if (inputFile.isDirectory()) {
continue;
}
try {
getLog().info(
"Loading execution data file "
+ inputFile.getAbsolutePath());
loader.load(inputFile);
} catch (final IOException e) {
throw new MojoExecutionException("Unable to read "
+ inputFile.getAbsolutePath(), e);
}
}
}
}
private void save(final ExecFileLoader loader)
throws MojoExecutionException {
if (loader.getExecutionDataStore().getContents().isEmpty()) {
getLog().info(MSG_SKIPPING);
return;
}
getLog().info(
"Writing merged execution data to "
+ destFile.getAbsolutePath());
try {
loader.save(destFile, false);
} catch (final IOException e) {
throw new MojoExecutionException("Unable to write merged file "
+ destFile.getAbsolutePath(), e);
}
}
}