I try to setup Jenkins Job for a Maven multimodule build. The development 
team likes to follow a gitflow workflow.

   - We use a Bitbucket Team Project


   - We have a develop branch that builds and deploys the SNAPSHOT versions 
   to nexus.


   - Each feature is developed in a separate feature branch. The feature 
   branches only install, but do not deploy the artifacts.


   - It is normal that the poms of the feature branch has the same version 
   number as the branch of the develop branch.


Is setup the following pipeline for this job:

def branchType = getBranchType "${env.BRANCH_NAME}"

def buildGoals = "clean install"
if (branchType == "dev") {
    buildGloals = "clean deploy"
}

pipeline {
    agent {
        node { label 'maven' }
    }
    triggers {
        upstream(upstreamProjects: 'Nightly Build Trigger', threshold: 
hudson.model.Result.SUCCESS)
        snapshotDependencies()
    }
    stages {
        stage('Build and Deploy') {
            steps {
                withMaven(
                        mavenLocalRepo: '.repository'
                        ) {
                            sh "mvn ${buildGoals}"
                        }
            }
        }
    }
}


In the config of the Bitbucket Team Project I selected the option "Build 
whenever a SNAPSHOT dependency is built" in the section ""Scan Organization 
Folder Triggers":

<https://lh3.googleusercontent.com/-CQE9AmGqVvQ/WliPUHju2tI/AAAAAAAAAJE/IFW4wFSY8Jcb1tU97hJf3BPj9EpjUm2AACEwYBhgL/s1600/2018-01-12%2B11_34_25-9999-998%2BGIT%2BFlow%2BTest%2BConfig%2B%255BJenkins%255D.png>








My multi module build has two artifacts: A 1.0.0-SNAPSHOT and B 
1.0.0-SNAPSHOT. B depends on A. 
The version numbers in the feature branch and in the develop branch are 
equal.

I run now the in the following problem:

Build of develop branch builds A 1.0.0-SNAPSHOT  -> Build of feature branch 
is triggered, because module B has module A 1.0.0-SNAPSHOT as dependency
Build of feature branch builds A 1.0.0-SNAPSHOT -> Build of develop branch 
is triggered, because moduel B has module A 1.0.0-SNAPSHOT as dependnecy.

We have an infinite loop.

How can we avoid this situation?

I tried the following:

triggers {
   upstream(upstreamProjects: 'Nightly Build Trigger', threshold: hudson.
model.Result.SUCCESS)
   if (branchType == "dev" ) {       
      snapshotDependencies()
   }
}

But I get a syntax error.












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