/*

 * Run default pipeline. See `steps.groovy` for details.

 */

def steps;

/*

 * A helper function to return a branch to build.

 *

 * For normal jobs this is the value of 'Branch' field from SCM configuration.

 * For multibranch jobs, this is the value of BRANCH_NAME environment variable.

 *

 * This is the same as build() function in `steps.groovy` and should be kept

 * in sync. We cannot use the one there as we yet have to load it.

 */

def branch() {

    if (env.BRANCH_NAME == null) {

        return scm.getBranch();

    } else {

        return env.BRANCH_NAME;

    }

}

stage ( "Load Pipeline") {

    node {

        /*

         * Do not use default workspace here as checkout

         * would erase all contents. Use a dedicated

         * workspace instead

         */

        ws ("workspace/${env.JOB_NAME}@loadpipeline") {

            sshagent([ scm.getCredentialsId() ]) {

                sh  """

                    if [ -f ci/steps.groovy ]; then

                        hg pull --ssh ssh ${scm.getSource()}

                    else

                        hg clone --ssh ssh ${scm.getSource()} .

                    fi

                    hg up ${branch()}

                    """

            }

            steps = load "ci/steps.groovy"

        }

    }

}

/*

 * Set the branch to build to make sure it's in sync...

 */

steps.branch = branch()

/*

 * ...and fire the pipeline

 */

steps.build()