I was looking for some tool to capture the Java compatibility differences between the artifacts generated in the current and previous build of our project. The tool should be part of our daily CI/CD build.
After some googling, I planned to use japicmp to compare between two SNAPSHOT versions, as I found it was fulfilling my requirements, as well as the project is being maintained well.
I tried with the following POM:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.rohan</groupId>
<artifactId>TestProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>${project.groupId}:${project.artifactId}</name>
<build>
<plugins>
<plugin>
<groupId>com.github.siom79.japicmp</groupId>
<artifactId>japicmp-maven-plugin</artifactId>
<version>0.11.1</version>
<configuration>
<oldVersion>
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>${project.artifactId}</artifactId>
<version>${project.version}</version>
<type>jar</type>
</dependency>
</oldVersion>
<newVersion>
<file>
<path>${project.build.directory}/${project.artifactId}-${project.version}.${project.packaging}</path>
</file>
</newVersion>
</configuration>
<executions>
<execution>
<phase>verify</phase>
<goals>
<goal>cmp</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
However, during execution, the Maven dependency resolver is fetching the Older version of the artifact from the build target directory, and not from the Local repository, which is eventually causing the Older and Newer version to be the same. Our project only releases the artifacts as SNAPSHOT releases with same version number. Hence I am tied up there...
Can someone please advise me how to go about here? Thanks!
UPDATE
I went around this, by copying the older SNAPSHOT artifact in a different folder, during the initialize phase, and then used the same in japicmp during package phase. Following is my POM:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.rohan</groupId>
<artifactId>TestProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>${project.groupId}:${project.artifactId}</name>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>3.0.2</version>
<executions>
<execution>
<id>copy-old-version</id>
<phase>initialize</phase>
<goals>
<goal>copy</goal>
</goals>
</execution>
</executions>
<configuration>
<artifactItems>
<artifactItem>
<groupId>${project.groupId}</groupId>
<artifactId>${project.artifactId}</artifactId>
<version>${project.version}</version>
<type>${project.packaging}</type>
</artifactItem>
</artifactItems>
<outputDirectory>${project.build.directory}/olderVersion</outputDirectory>
</configuration>
</plugin>
<plugin>
<groupId>com.github.siom79.japicmp</groupId>
<artifactId>japicmp-maven-plugin</artifactId>
<version>0.11.1</version>
<executions>
<execution>
<phase>verify</phase>
<goals>
<goal>cmp</goal>
</goals>
</execution>
</executions>
<configuration>
<oldVersion>
<file>
<path>${project.build.directory}/olderVersion/${project.artifactId}-${project.version}.${project.packaging}</path>
</file>
</oldVersion>
<newVersion>
<file>
<path>${project.build.directory}/${project.artifactId}-${project.version}.${project.packaging}</path>
</file>
</newVersion>
</configuration>
</plugin>
</plugins>
</build>
</project>
I will really appreciate if someone can advise me a better way, or a better tool which can resolve my purpose. Thanks!
