Maven Reports in Jenkins

Code quality is a sensitive topic. It affects your maintenance cost as well as your customer satisfaction. Not to mention your developers motivation to work with the code. Who wants to fix ugly code, right?

Discussing code quality always needs hard facts and numbers! So this is a short tutorial how to create some simple reports to analyze some code quality metrics.

Reports

This section will shorty explain the used reports.

Findbugs

FindBugs looks for bugs in Java programs. It is based on the concept of bug patterns. A bug pattern is a code idiom that is often an error

FindBugs Analysis

FindBugs Analysis

Checkstyle

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. It automates the process of checking Java code to spare humans of this boring (but important) task. This makes it ideal for projects that want to enforce a coding standard.

Checkstyle Analysis

Checkstyle Analysis

Cobertura Code Coverage

Cobertura is a free Java tool that calculates the percentage of code accessed by tests. It can be used to identify which parts of your Java program are lacking test coverage. It is based on jcoverage.

Cobertura Report

Cobertura Report

Surefire Test Report

The Surefire Plugin is used during the test phase of the build lifecycle to execute the unit tests of an application. It generates reports…

Surefire Testreport

Surefire Testreport

Basic pom.xml

Starting with a basic pom configuration:

<project>
 
  ...
  <properties>
     <findbugs.version>2.5.2</findbugs.version>
     <checkstyle.version>2.9.1</checkstyle.version>
     <surefire.reportplugin.version>2.12.4</surefire.reportplugin.version>
     <cobertura.version>2.5.2</cobertura.version>
  </properties>
 
  <build>
     <plugins>
        <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>findbugs-maven-plugin</artifactId>
           <version>${findbugs.version}</version>
        </plugin>
        <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>cobertura-maven-plugin</artifactId>
           <version>${cobertura.version}</version>
           <configuration>
               <formats>
                   <format>xml</format>
               </formats>
           </configuration>
        </plugin>
     </plugins>
  </build>
 
  <reporting>
     <plugins>
        <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>findbugs-maven-plugin</artifactId>
           <version>${findbugs.version}</version>
        </plugin>
        <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-checkstyle-plugin</artifactId>
           <version>${checkstyle.version}</version>
        </plugin>
        <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-report-plugin</artifactId>
           <version>${surefire.reportplugin.version}</version>
        </plugin>
        <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>cobertura-maven-plugin</artifactId>
           <version>${cobertura.version}</version>
           <configuration>
               <formats>
                   <format>xml</format>
               </formats>
           </configuration>
        </plugin>
      </plugins>
   </reporting>
</project>

 

Jenkins Plugins

You need to install a few jenkins plugins to get a nice integration with your reports.

Project Configuration

Now you need to configure your project to show the results of your reports.

Findbugs and Checkstyle

FindBugs and Checkstyle

FindBugs and Checkstyle

 

You can configure them in the “build configuration” tab. There are some limits to set, which influence the representation.

Cobertura

Cobertura Config

Cobertura Config

 

Cobertura is configured in the “post-build actions”. Same configurations as in the findbugs and checkstyle plugin.

Result

On your main page of your project you have some new graphs and links.

Jenkins Trend Graphs

Jenkins Trend Graphs

Jenkins Navbar

Jenkins Navbar

 

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