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Detekt Maven Plugin

A Maven plugin that wraps the Detekt CLI. It supports the same parameters as the Detekt CLI.

How to use

See below how to execute after configuring.

Basic usage

<build>
    <plugins>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>check</goal></goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Using the above configuration Detekt will scan source files in ${basedir}/src and output the results in ${basedir}/detekt.

Configuration

All parameters available to Detekt version 1.23.7 can be configured in the plugin.

Local rule configuration

The plugin supports local files as configuration to be passed to Detekt.

<build>
    <plugins>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>check</goal></goals>
                    <configuration>
                        <config>config/detekt/detekt.yml</config>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Multiple files can be listed with ; as separator.

Remote rule configuration

The plugin supports remote config over http and https.

<build>
    <plugins>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>check</goal></goals>
                    <configuration>
                        <config>https://raw.githubusercontent.com/Ozsie/detekt-maven-plugin/fd0de6d59e6ae1e062a9d2b030a171da1d3225ab/src/test/resources/resolve-config/remote/remote-config.yml</config>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Extensions

Detekt supports rulesets, processors, reports, etc. packaged in Detekt plugins.

Published Detekt plugins

See Detekt Marketplace for list of known plugins.

<build>
    <plugins>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>check</goal></goals>
                </execution>
            </executions>
            <dependencies>
                <!-- Detekt's first-party unbundled plugin for library authors:
                     https://detekt.dev/docs/next/rules/libraries -->
                <dependency>
                    <groupId>io.gitlab.arturbosch.detekt</groupId>
                    <artifactId>detekt-rules-libraries</artifactId>
                    <version>1.23.7</version>
                </dependency>
            </dependencies>
        </plugin>
    </plugins>
</build>

Local Detekt plugins

<build>
    <plugins>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>check</goal></goals>
                    <configuration>
                        <plugins>
                            <plugin>local/path/to/plugin.jar</plugin>
                        </plugins>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Reporting

See Detekt documentation for supported report types.

<build>
    <plugins>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>check</goal></goals>
                    <configuration>
                        <report>
                            <report>txt:reports/detekt.txt</report>
                            <report>xml:reports/detekt.xml</report>
                        </report>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Alternatively, the configuration can be placed outside of the <executions>. This allows the configuration be used when running goals standalone.

<build>
    <plugins>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <configuration>
                <report>
                    <report>txt:reports/detekt.txt</report>
                    <report>xml:reports/detekt.xml</report>
                </report>
            </configuration>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>check</goal></goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Baseline

First a baseline file needs to be generated:

mvn detekt:cb

This will generate a baseline file for each module named as baseline-<module-name>.xml. For more information on generating baselines, see create-baseline. You can now reference the baseline file in your configuration, as below.

<build>
    <plugins>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <configuration>
                <baseline>baseline.xml</baseline>
            </configuration>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>check</goal></goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Type Resolution

See Issue #144 for an explanation.

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-dependency-plugin</artifactId>
            <version>3.2.0</version>
            <executions>
                <execution>
                    <id>generate-classpath-var</id>
                    <phase>package</phase>
                    <goals><goal>build-classpath</goal></goals>
                    <configuration>
                        <outputProperty>generated.classpath</outputProperty>
                        <silent>true</silent>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>com.github.ozsie</groupId>
            <artifactId>detekt-maven-plugin</artifactId>
            <version>1.23.7</version>
            <configuration>
                <baseline>baseline.xml</baseline>
                <classPath>${generated.classpath}</classPath>
                <jvmTarget>17</jvmTarget>
            </configuration>
            <executions>
                <execution>
                    <phase>verify</phase>
                    <goals><goal>ctr</goal></goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Goals

`check`

Used to run detekt. All cli parameters, excluding -gc and -cb, are available using -Ddetekt.{parameter}

Examples

mvn detekt:check -Ddetekt.config=detekt.yml
mvn detekt:check -Ddetekt.debug=true

If you need type resolution, use the following instead

mvn detekt:ctr -Ddetekt.config=detekt.yml
mvn detekt:ctr -Ddetekt.debug=true

`create-baseline`

Used to create a baseline. All cli parameters, excluding -gc and -cb, are available using -Ddetekt.{parameter}. By default, a file called baseline-<module-name>.xml will be generated. If you include -Ddetekt.baseline in the call you can specify some other name for the baseline file.