executing jenkins job based on svn update? - ant

I am creatig a new Jenkin Job. This job is using SVN version control and coding is done in Java and also i am creating jar using ANT.
Now I would like to create job that detects changes in svn repository.
i.e., When ever the developer changes the code jenkins job need to executed automatically.
Can any one please help me.
Thanks

Have you given Subversion Plugin a read?
Post-commit hook is of concern to you -
Jenkins can poll Subversion repositories for changes, and while this is reasonably efficient, this can only happen up to every once a minute, so you may still have to wait a full minute before Jenkins detects a change.
To reduce this delay, you can set up a post commit hook so the Subversion repository can notify Jenkins whenever a change is made to that repository.

Related

How to trigger Jenkins job by code change on Perforce automatically

I have one job on Jenkins and its source repo is Perforce. Use P4 plugin to configure source repo and want to trigger this job automatically. There is one Polling SCM but still cannot find change on Perforce but actually there are changes. If build this job manually, code changes can be sync and job works well. So why polling cannot find the changes? Do I miss some configuration?
Thank you in advance.
You can try it the other way around.
Define a webhook in Jenkins (e.g. Generic Webhook Trigger Plugin) and configure the git server to call that on changes.
The other way you generate unnecessary traffic.

How to exit Jenkins job if SCM polling does not detect any changes?

Windows Server 2016, Jenkins 2.107.1. We have GitHub repositories, Git repositories not in GitHub, and CVS repositories. This link...Can I restrict poll SCM job to be run only once in a day?, tells me that I can set the polling to happen only once a day (which is all that we want, in that the coders can check in, up to a certain time). It does not tell me how to exit out (not to continue with the rest of the build steps), if there are no changes (and, send out a message that there are no changes and thus will be no build tonight). We are not using pipeline. Thanks.
the poll scm plugin in by default will not run the job if there are no SCM changes, also you will get GIT polling logs to see the detailed information

How to check if code is updated or not in Jenkins

I have created a job in the Jenkins for the .net component. I want a condition or feature in the Jenkins to check if the repo of that component is updated by the SVN or not. If code is updated in the SVN then only that component should be build. By this way, I want to configure multiple jobs.
You have to set the job in order to pull from an SVN Repository.
http://blogs.wandisco.com/wp-content/uploads/2012/01/jenkins-poll-5-mins.png
You will be able to setup your pulling frequency, the basic poll configuration will check for new commit in all the SVN repositories checked out by your job.

How to trigger jenkins Job on code pushed to development server?

I have development code repository at bitbucket and another test script code repository at bitbucket. Now I have setup a Jenkins job by linking test code repository. Is there any way to trigger jenkins job automatically on change in development repository ?
You can add the BitBucket Plugin to your Jenkins instance. It will allow you to configure a webhook in BitBucket that will then trigger any Jenkins job listening for that webhook. The plugin's page has a detailed breakdown, but the basics are;
In your repo in BitBucket, create a new Webhook using your Jenkins' url. I believe the url is generally http://[your jenkins url]/bitbucket-hook/
Make the trigger a repo push.
In your Jenkins job, check the box "Build when a change is pushed to BitBucket" under the Build Triggers section.
Now any time you commit to the repo you created the Webhook on, that Jenkins job will be run.
You can also limit what branches trigger commits by parameterizing your Jenkins build to ignore certain branches / keywords / etc if that's something you need for your specific project.
Builds by source changes
You can have Jenkins poll your Revision Control System for changes. You can specify how often Jenkins polls your revision control system using the same syntax as crontab on Unix/Linux. However, if your polling period is shorter than it takes to poll your revision control system, you may end up with multiple builds for each change. You should either adjust your polling period to be longer than the amount of time it takes to poll your revision control system, or use a post-commit trigger. You can examine the Polling Log for each build to see how long it took to poll your system.
Alternatively, instead of polling on a fixed interval, you can use a URL trigger (described above), but with /polling instead of /build at the end of the URL. This makes Jenkins poll the SCM for changes rather than building immediately. This prevents Jenkins from running a build with no relevant changes for commits affecting modules or branches that are unrelated to the job. When using /polling the job must be configured for polling, but the schedule can be empty.

Jenkins, how to make only specific commits to SVN to trigger a build

I am currently triggering a new Jenkins build whenever a commit to SVN has been made. However, I would like to make another build where our database is deployed only if the Ant script deploying the database OR our SQL scripts has been changed in SVN due to a commit. Is this possible to do in Jenkins?
There is no way to do this out of the box. But you can achieve this through other means.
For the job, you only specify the SVN sources for which you would want to listen. The remaining svn sources can be added to the appropriate location using command line svn methods. Ensure that the command line execution will place and merge the existing sources that jenkins has got. You have to give the right destination options in the svn commands. I myself agree that this is not a very clean way to do, but at least there is a work around for that.
Have two jobs. The first job will be defined only on the required svn sources and you enable the poll option. This should trigger another downstream project which reads all source files. This job should not be polling svn and the actual build execution should be done here.

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