karaf 4.4.9 - missing requirement [org.ops4j.pax.logging.pax-logging-api/2.3.0] osgi.ee; filter:="(&(osgi.ee=JavaSE)(version=11))"

[rastislavpapp]

Unable to build karaf via assemby plugin, getting this exception:

[ERROR] Failed to execute goal org.apache.karaf.tooling:karaf-maven-plugin:4.4.9:assembly (default-assembly) on project karaf-assembly: Unable to build assembly: Unable to resolve root: missing requirement [root] osgi.identity; osgi.identity=framework; type=karaf.feature; version=4.4.9; filter:="(&(osgi.identity=framework)(type=karaf.feature)(version>=4.4.9))" [caused by: Unable to resolve framework/4.4.9: missing requirement [framework/4.4.9] osgi.identity; osgi.identity=org.ops4j.pax.logging.pax-logging-api; type=osgi.bundle; version="[2.3.0,2.3.0]"; resolution:=mandatory [caused by: Unable to resolve org.ops4j.pax.logging.pax-logging-api/2.3.0: missing requirement [org.ops4j.pax.logging.pax-logging-api/2.3.0] osgi.ee; filter:="(&(osgi.ee=JavaSE)(version=11))"]] -> [Help 1]

The only thing I came up with is that the pax-logging-api/2.3.0 has this requirement:

Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=11))

and the previous one (2.2.8) had:

Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))"

and the values in config.properties / eecap-xxx have 11.0 instead of 11; but I'm unsure whether that matters.

[rovarga]

<javase/> is still defaulting to 1.8 in karaf-4.4.x. Explicitly setting it to 11 should fix the failure.

[grgrzybek]

Hello As mentioned in the matrix: https://github.com/ops4j/org.ops4j.pax.logging?tab=readme-ov-file#versions, Pax Logging 2.3.x is JDK 11+ and Pax Logging 2.2.x keeps the JDK 8 compatibility level. The reason is that Pax Logging 2.3.x moved to Logback 1.5.x. kind regards Grzegorz Grzybek wt., 16 gru 2025 o 10:17 Robert Varga ***@***.***> napisał(a):

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[jbonofre]

Karaf 4.4.x is built with JDK 11 and also define JavaSE to 11 by default: https://github.com/apache/karaf/blob/karaf-4.4.x/assemblies/apache-karaf/pom.xml#L181

I agree that in the karaf-maven-plugin, we should have JavaSE 11 by default to be aligned. I will do a PR in that way for Karaf 4.4.10.

NB: Karaf 4.5.x will use JDK 17 by default.