How to debug an OSGi Bundle inside eclipse using maven structured project - eclipse

Question

I have a maven project which library should also be an OSGi bundle with an
declarative service. I added the OSGI-INF folder with the service.xml inside
src/java/resources which will be added to the jar. But: When I start the project as equinox project, where I want to check if the service is loaded, I get the error that the OSGI-INF/service.xml can't be found. I guess eclipse won't add the resources folder to the classpath when starting.
BTW: The MANIFEST-MF is in the root folder and the pom.xml contains the following text:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifestFile>META-INF/MANIFEST.MF</manifestFile>
</archive>
</configuration>
</plugin>
Has anbody a good idea how to tell eclipse where to find the metadata files? I'm using m2eclipse if this is relevant.
Thanks in advance
Hannes

Answer 1

I've the same issues but I've manually tweaked my POM.xml for copying the generate target/classes/META-INF/** stuff (MANIFEST.MF, property files, spring XMLs, ...) into the project ROOT folder (which Eclipse PDE expects):
<!--
We copy all stuff from target/classes/META-INF into META-INF/ in order
to keep Maven output with PDE.
-->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>2.4.3</version>
<executions>
<execution>
<id>synch-pde-metadata-from-maven</id>
<phase>package</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<outputDirectory>${basedir}/META-INF</outputDirectory>
<resources>
<resource>
<directory>target/classes/META-INF</directory>
<filtering>false</filtering>
</resource>
</resources>
</configuration>
</execution>
</executions>
</plugin>
<!--
We delete all stuff from the root bundle's META-INF
-->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<filesets>
<fileset>
<directory>META-INF</directory>
<includes>
<include>**/*</include>
</includes>
<followSymlinks>false</followSymlinks>
</fileset>
</filesets>
</configuration>
</plugin>
(I also clean up things when mvn clean is called) It is not really efficient but it works.
Ps: you may have to right-click on the project and make it a plug-in project in order for this to work.

Answer 2

The Problem is that Eclipse needs that OSGI-INF (and also META-INF) Folder in root.
I have found a link on how to probably solve the problem.
https://www.nuxeo.com/blog/working-with-osgi-and-maven-in-eclipse/
Basically they put the OSGI-INF and META-INF Folders into src/main/resources
Then they set the src/main/resources Folder as root of the OSGI project. So that Eclipse has both Folders at root.
To have Soure Files also available they added a Linked Resources to src/main/java by adding an entry to the .project File
<linkedResources>
<link>
<name>src</name>
<type>2</type>
<locationURI>PARENT-1-PROJECT_LOC/java</locationURI>
</link>
</linkedResources>
Now you just need to copy the .prject and .classpath Files into src/main/resources (your new root) and everything should be working.
By the time of this writing i didn't test this on my own but will do so in the near future.