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/*******************************************************************************
* Copyright (c) 2009, 2016 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:
* Evgeny Mandrikov - initial API and implementation
* Kyle Lieber - implementation of CheckMojo
* Marc Hoffmann - redesign using report APIs
*
*******************************************************************************/
package org.jacoco.maven;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.maven.plugin.MojoExecutionException;
import org.jacoco.core.analysis.ICoverageNode;
import org.jacoco.report.IReportVisitor;
import org.jacoco.report.check.IViolationsOutput;
import org.jacoco.report.check.Limit;
import org.jacoco.report.check.Rule;
/**
* Checks that the code coverage metrics are being met.
*
* @goal check
* @phase verify
* @requiresProject true
* @threadSafe
* @since 0.6.1
*/
public class CheckMojo extends AbstractJacocoMojo implements IViolationsOutput {
private static final String MSG_SKIPPING = "Skipping JaCoCo execution due to missing execution data file:";
private static final String CHECK_SUCCESS = "All coverage checks have been met.";
private static final String CHECK_FAILED = "Coverage checks have not been met. See log for details.";
/**
* <p>
* Check configuration used to specify rules on element types (BUNDLE,
* PACKAGE, CLASS, SOURCEFILE or METHOD) with a list of limits. Each limit
* applies to a certain counter (INSTRUCTION, LINE, BRANCH, COMPLEXITY,
* METHOD, CLASS) and defines a minimum or maximum for the corresponding
* value (TOTALCOUNT, COVEREDCOUNT, MISSEDCOUNT, COVEREDRATIO, MISSEDRATIO).
* If a limit refers to a ratio the range is from 0.0 to 1.0 where the
* number of decimal places will also determine the precision in error
* messages.
* </p>
*
* <p>
* If not specified the following defaults are assumed:
* </p>
*
* <ul>
* <li>rule element: BUNDLE</li>
* <li>limit counter: INSTRUCTION</li>
* <li>limit value: COVEREDRATIO</li>
* </ul>
*
* <p>
* Note that you <b>must</b> use <tt>implementation</tt> hints for
* <tt>rule</tt> and <tt>limit</tt> when using Maven 2, with Maven 3 you do
* not need to specify the attributes.
* </p>
*
* <p>
* This example requires an overall instruction coverage of 80% and no class
* must be missed:
* </p>
*
* <pre>
* {@code
* <rules>
* <rule implementation="org.jacoco.maven.RuleConfiguration">
* <element>BUNDLE</element>
* <limits>
* <limit implementation="org.jacoco.report.check.Limit">
* <counter>INSTRUCTION</counter>
* <value>COVEREDRATIO</value>
* <minimum>0.80</minimum>
* </limit>
* <limit implementation="org.jacoco.report.check.Limit">
* <counter>CLASS</counter>
* <value>MISSEDCOUNT</value>
* <maximum>0</maximum>
* </limit>
* </limits>
* </rule>
* </rules>}
* </pre>
*
* <p>
* This example requires a line coverage minimum of 50% for every class
* except test classes:
* </p>
*
* <pre>
* {@code
* <rules>
* <rule>
* <element>CLASS</element>
* <excludes>
* <exclude>*Test</exclude>
* </excludes>
* <limits>
* <limit>
* <counter>LINE</counter>
* <value>COVEREDRATIO</value>
* <minimum>0.50</minimum>
* </limit>
* </limits>
* </rule>
* </rules>}
* </pre>
*
* @parameter
* @required
*/
private List<RuleConfiguration> rules;
/**
* Halt the build if any of the checks fail.
*
* @parameter property="jacoco.haltOnFailure" default-value="true"
* @required
*/
private boolean haltOnFailure;
/**
* File with execution data.
*
* @parameter default-value="${project.build.directory}/jacoco.exec"
*/
private File dataFile;
private boolean violations;
private boolean canCheckCoverage() {
if (!dataFile.exists()) {
getLog().info(MSG_SKIPPING + dataFile);
return false;
}
final File classesDirectory = new File(getProject().getBuild()
.getOutputDirectory());
if (!classesDirectory.exists()) {
getLog().info(
"Skipping JaCoCo execution due to missing classes directory:"
+ classesDirectory);
return false;
}
return true;
}
@Override
public void executeMojo() throws MojoExecutionException,
MojoExecutionException {
if (!canCheckCoverage()) {
return;
}
executeCheck();
}
private void executeCheck() throws MojoExecutionException {
violations = false;
final ReportSupport support = new ReportSupport(getLog());
final List<Rule> checkerrules = new ArrayList<Rule>();
for (final RuleConfiguration r : rules) {
checkerrules.add(r.rule);
}
support.addRulesChecker(checkerrules, this);
try {
final IReportVisitor visitor = support.initRootVisitor();
support.loadExecutionData(dataFile);
support.processProject(visitor, getProject(), this.getIncludes(),
this.getExcludes());
visitor.visitEnd();
} catch (final IOException e) {
throw new MojoExecutionException(
"Error while checking code coverage: " + e.getMessage(), e);
}
if (violations) {
if (this.haltOnFailure) {
throw new MojoExecutionException(CHECK_FAILED);
} else {
this.getLog().warn(CHECK_FAILED);
}
} else {
this.getLog().info(CHECK_SUCCESS);
}
}
public void onViolation(final ICoverageNode node, final Rule rule,
final Limit limit, final String message) {
this.getLog().warn(message);
violations = true;
}
}
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