How to dynamically set a local Maven repository per a set of Jobs

[Samith Dassanayake]

Hi all,

I want to set a local maven repository per set of jobs dynamically.(kind of a job partitioning method) For an example
job1, job2, job3  --> use /home/jenkins/dir1

job4, job5,  --> use /home/jenkins/dir2

job7  --> use /home/jenkins/dir3

etc..

Is there a way to define local maven repository location in the config.xml such that I can define which local maven repository to use, during the job creation per particular job?

Thanks,

Samith

[Mark Waite]

The maven build step includes an advanced button which allows you to configure the repository for that job.

Mark Waite

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[Samith Dassanayake]

Hi Mark,

Yes. By setting "Use private Maven repository" option we can configure whether to use a private maven repository, But the possible values are default, local-to-workspace and local-to-executor. Therefore I cannot specify the local maven repository to use. 
What I want to do is each job will have their own workspace and set of jobs will share a single local maven repo

Example

JOB        WORKSPACE                   LOCAL MAVEN REPO

job1        JENKINS_HOME/job1       /home/jenkins/local_repo_1

job2        JENKINS_HOME/job2       /home/jenkins/local_repo_1

job3        JENKINS_HOME/job3       /home/jenkins/local_repo_1

job4         JENKINS_HOME/job4       /home/jenkins/local_repo_2

job5         JENKINS_HOME/job5       /home/jenkins/local_repo_2

Here job1,job2 and job3 will have their own workspace but share the local maven repository in " /home/jenkins/local_repo_1". But for job4 and job5 maven repository will be " /home/jenkins/local_repo_2". How can I configure jenkins to achieve that?

Thanks,

Samith

[Mark Waite]

Can the repository in use by a job be set from the settings.xml file?  If so, then you might use a "managed file" which contains the definition of the repository you want for a specific job.

The managed file is then assigned to the job through that same Advanced settings dialog.

Mark Waite

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[Samith Dassanayake]

Hi Mark,

I didn't get your point.. Could you please elaborate more. It would be great-full, if you could provide an example. 

Thanks,

Samith

[Mark Waite]

I'm afraid I can't provide an example.  I was only guessing that it is possible, but don't have experience to prove it is possible.

When I read https://maven.apache.org/guides/mini/guide-configuring-maven.html , it seems to indicate that the settings.xml file can specify the location of the local repository directory.  It seems that if you can use the settings file to specify a job specific repository directory, you would probably also be able to use the settings file to have a subset of your jobs use a specific repository directory.

Mark Waite

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[Matt Stave]

We have multiple Jenkins jobs using maven with the same userID with /home on a file system shared between slave nodes, so the default ~/.m2/repository led to ... nice speedups, but had the downside of doing The Wrong Thing, and causing errors.  So for jobs that call mvn in the middle of a bash step (as opposed to using the local option others pointed out with a Maven step) you can do mvn ... -Dmvn.repo.local=/path/you/want

You can probably put that in your settings.xml file.