Pipeline DSL using a shared lib which is a java class

[Charles Moulliard]

Hi,

Can we define a pipeline DSL script importing a shared lib which is a java class ?

Script

@org.jenkinsci.plugins.workflow.libs.Library('mytools')

import org.mytools.Messaging // The Java class imported as shared lib 

Messaging m = new Messaging();

The java class has been defined under the folder `src/main/org/mytools/Messaging.java` within the git project cloned as shared lib

Cheers

Charles

[Ivan Fernandez Calvo]

you can use directly a class from the Shared library

This is an example in our shared library (https://github.com/elastic/apm-pipeline-library)

https://github.com/elastic/apm-pipeline-library/blob/master/src/co/elastic/matrix/DefaultParallelTaskGenerator.groovy

and a pipeline that uses that class

https://github.com/elastic/apm-integration-testing/blob/master/.ci/integrationTestDownstream.groovy#L89

[Charles Moulliard]

Many thanks Ivan for the example which is a Groovy class and not a java class. According to the documentation, I don't think that we can use some java classes directly from a shared lib project excepted if thy have been compiled, packaged as jar under a maven repository and that you import it using "@Grab" - https://www.jenkins.io/doc/book/pipeline/shared-libraries/#using-third-party-libraries

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[Ivan Fernandez Calvo]

If a class is in the classpath, you can use it on a Pipeline Step or in a groovy class (the example), then you can use that step(or groovy class) in your pipeline. So instead of trying to load a jar file in runtime you can put the jar in the classpath of your Jenkins instance and wrap the class ina step (or groovy class)