Changing Jenkins build number

Is there a way to change the build number that is sent via email after a job completes? The problem is that are product builds are NOT being done by Jenkins, so we want to be able to get the build number(ie. from a text file) and update the build number in Jenkins to match it. I have tried to set the build number:

set BUILD_NUMBER=45

But the email is still showing the build number that Jenkins originally set.

Solution 1:

If you have access to the script console (Manage Jenkins -> Script Console), then you can do this following:

Jenkins.instance.getItemByFullName("YourJobName").updateNextBuildNumber(45)

Solution 2:

can be done with the plugin: https://wiki.jenkins-ci.org/display/JENKINS/Next+Build+Number+Plugin

more info: http://www.alexlea.me/2010/10/howto-set-hudson-next-build-number.html

if you don't like the plugin:

If you want to change build number via nextBuildNumber file you should "Reload Configuration from Disk" from "Manage Jenkins" page.

Solution 3:

Under the job workspace folder, like:

C:\Program Files (x86)\Jenkins\jobs\job_name

there is a file named nextBuildNumber.

Setting the build number in the file and reloading the configuration from disk (Manage Jenkins menu) will force the next build you start to have the value from the file as BUILD_NUMBER.