org.jacoco.maven.MergeMojo Maven / Gradle / Ivy
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The JaCoCo Maven Plugin provides the JaCoCo runtime agent to your tests and allows basic report creation.
/*******************************************************************************
* Copyright (c) 2009, 2022 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* 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.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
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
*
* @since 0.6.4
*/
@Mojo(name = "merge", defaultPhase = LifecyclePhase.GENERATE_RESOURCES, threadSafe = true)
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", defaultValue = "${project.build.directory}/jacoco.exec")
private File destFile;
/**
* This mojo accepts any number of execution data file sets.
*
*
*
* <fileSets>
* <fileSet>
* <directory>${project.build.directory}</directory>
* <includes>
* <include>*.exec</include>
* </includes>
* </fileSet>
* </fileSets>
*
*
*/
@Parameter(required = true)
private List 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);
}
}
}
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