Include Package Version Information in manifest

[melloware]

Your Manifest is how JARS are identified.

For example:
WorkflowClient.class.getPackage().getImplementationVersion() returns NULL because your manifest is empty.

A proper manifest you can genereate with GRadle easily to look something like this... from Caffeine.

Manifest-Version: 1.0
Automatic-Module-Name: com.github.benmanes.caffeine
Build-Jdk-Spec: 11
Bundle-Description: A high performance caching library
Bundle-License: https://www.apache.org/licenses/LICENSE-2.0
Bundle-ManifestVersion: 2
Bundle-Name: com.github.ben-manes.caffeine
Bundle-SymbolicName: com.github.ben-manes.caffeine
Bundle-Version: 3.1.8
Export-Package: com.github.benmanes.caffeine.cache;uses:="com.github.b
 enmanes.caffeine.cache.stats";version="3.1.8",com.github.benmanes.caf
 feine.cache.stats;uses:="com.github.benmanes.caffeine.cache";version=
 "3.1.8",com.github.benmanes.caffeine;version="3.1.8"
Implementation-Title: A high performance caching library
Implementation-Version: 3.1.8
Require-Capability: osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=11))"

[Quinn-With-Two-Ns]

The Java SDK does contain a manifest, however the manifest may not contain package version information. There is no strong reason we cannot add that though.

[melloware]

Yes I apologize I meant your Manifest is empty.

Manifest-Version: 1.0

[melloware]

thanks in advance @Quinn-With-Two-Ns we are trying to create a Quarkus Extension for Temporal: https://github.com/quarkiverse/quarkus-temporal

[melloware]

this can be done with some pseudo code below but I have no idea where to plug this into your Gradle build ecosystem.

plugins {
    id 'java'
}

jar {
    manifest {
        attributes(
            'Implementation-Title': 'My Application',
            'Implementation-Version': version,
        )
    }
}

[melloware]

Bump. For our Quarkus Extension we would like to display the version of Temporal in use on the DevOps card but right now we display ? because we can't detect the version.