org.osgi import cannot be resolved - eclipse

Question

I am trying to get started with OSGI and create a basic bundle.
I created a bundle with activator in Eclipse (2019-06) and selected Liberty as the target runtime (the end goal is to create a Liberty extension)
It works fine, but when I convert it to Maven, Eclipse complains the org.osgi package cannot be resolved
I see this dependency is defined:
<dependency>
<groupId>net.wasdev.maven.tools.targets</groupId>
<artifactId>liberty-target</artifactId>
<version>19.0.0.9</version>
<type>pom</type>
<scope>provided</scope>
</dependency>
I tried adding this to the felix plugin with no luck.
<Import-Package>
org.osgi.framework
</Import-Package>
After trying thing for a while I am ready to give up. Any help would be appreciated.

Answer 1

Add these maven dependencies for the OSGi specs.
<dependency>
<groupId>org.osgi</groupId>
<artifactId>osgi.core</artifactId>
<version>6.0.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>osgi.cmpn</artifactId>
<version>6.0.0</version>
<scope>provided</scope>
</dependency>
You also have to configure the bnd-maven-plugin. So your imports are computed automatically. Alternatively you can use the maven-bundle-plugin. (You might already use this).
<plugin>
<groupId>biz.aQute.bnd</groupId>
<artifactId>bnd-maven-plugin</artifactId>
<version>4.2.0</version>
<executions>
<execution>
<goals>
<goal>bnd-process</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<archive>
<manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
</archive>
</configuration>
</plugin>
This covers the compile time resolution of your packages.
In addition you need to provide the correct bundles at runtime. This highly depends on how you define your runtime.
Some org.osgi package come from the OSGi framework itself. Others have to be installed as bundles. Be aware that you normally do not install the specs as bundles. Instead you install implementations that also bring the specs.