Setting an env var from a build step

[PhilipLB]

Hi,

I'd like to set an environment variable from within the execution of my Builder (in my plugin). How do I do this? SCM plugins have their buildEnvVars-method (or similar), but the Builder doesn't...
Any help would be greatly appreciated!

Best regards,
Philip

[PhilipLB]

This was too optimistic:
build.getEnvironment(listener).put("FOO", "BAR");

In a later buildstep, the "FOO" env var is still null.

[Slide]

Does [1] help at all?

slide

1 - https://wiki.jenkins-ci.org/display/JENKINS/EnvInject+Plugin

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[cjo]

Or have your builder add an action that implements EnviromentContributingAction [1] to the build, normally extending from InvisibleAction [2]

via build.getActions().add(<yourAction>);

Chris

[1] http://javadoc.jenkins-ci.org/hudson/model/EnvironmentContributingAction.html
[2] http://javadoc.jenkins-ci.org/hudson/model/InvisibleAction.html

[PhilipLB]

This worked like a charm! The environment variable is now available in other build-steps, even in a shell one. :)
Class:
/**
 * An action to publish a single environment variable.
 */
public class PublishEnvVarAction extends InvisibleAction implements EnvironmentContributingAction {

    /** The environment variable key. */
    private String key;

    /** The environment variable value. */
    private String value;
   
    /**
     * Constructor.
     * @param key the environment variable key
     * @param value the environment variable value
     */
    public PublishEnvVarAction(String key, String value) {
        this.key = key;
        this.value = value;
    }
   
    /* (non-Javadoc)
     * @see hudson.model.EnvironmentContributingAction#buildEnvVars(hudson.model.AbstractBuild, hudson.EnvVars)
     */
    public void buildEnvVars(AbstractBuild<?, ?> build, EnvVars env) {
        env.put(key, value);
    }

}

In my Builder:
build.addAction(new PublishEnvVarAction("FOO", "BAR"));