I have a shared library which has a class that implements org.eclipse.microprofile.config.spi.ConfigSource (let's call this CustomConfigSource.java). In the shared library's META-INF/services folder there is a file called "org.eclipse.microprofile.config.spi.ConfigSource" which contains the path to my CustomConfigSource.java class. This way I can use that class as an alias for eclipses' microprofile config in any child project that inherits the shared library.
In my child project I have added the shared library as a dependency. What I want to do is extend the CustomConfigSource class from my shared library and create a class called CustomConfigSourceChild.java. In order to use CustomConfigSourceChild as an alias for eclipse's microprofile config in my child project, I need to add the path to CustomConfigSourceChild.java in the child project's META-INF/services/org.eclipse.microprofile.config.spi.ConfigSource file.
So in other words, here is what my shared library's resources folder structure looks like:
├── META-INF
│ └── services
│ └── org.eclipse.microprofile.config.spi.ConfigSource
And my child project's resources folder:
├── META-INF
│ └── services
│ └── org.eclipse.microprofile.config.spi.ConfigSource
Both my child project's and my shared library's org.eclipse.microprofile.config.spi.ConfigSource file contains the path to their respective custom config source implementation java file.
Now here is the issue. When I compile my child project (mvn clean package), in my child project's target/META-INF/services/, ideally I should see both the paths to CustomConfigSource.java and CustomConfigSourceChild.java. However, this is not the case, as I only see the path to CustomConfigSource.java included.
I tried fixing this issue by adding the following maven-shade-plugin:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.2</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/services/org.eclipse.microprofile.config.spi.ConfigSource</resource>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
Which ideally should merge both META-INF/services/org.eclipse.microprofile.config.spi.ConfigSource files from the shared library and child project, but this did not work.
Any suggestions on how to merge both META-INF/services/org.eclipse.microprofile.config.spi.ConfigSource files from shared library and child project?
