How to distinguish which build trigger to kick off the build

[zhangkm]

Hello,
As we know, we can select build triggers in jenkins, such as Poll SCM,
Build periodically, Build after other projects are built, etc. In my build
job, I use SVN as CVS and I select Build periodically and Poll SCM as build
trigger.
<http://jenkins-ci.361315.n4.nabble.com/file/n4807513/build-trigger.png>
Now I want to know which build trigger to kick off the build job, so I
can execute different bat file or pass different parameters depend on
different trigger. For example, if Build periodically trigger the build, I
will pass the parameter 'buildall=true', else I will pass the parameter
'buildall=false'.
Please tell me how to make it come true, or any other way to solve this
problem?



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[Baptiste Mathus]

Hi,
IIUC what you're talking about us actually called a "Cause" in Jenkins.
Seems like https://wiki.jenkins-ci.org/display/JENKINS/Build+Cause+Run+Condition was designed to do what you want, but that plugin seems abandoned and is said to only implement the user cause.

-- Baptiste

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[Olli Sivonen]

Hi,

Jenkins generates environment variable BUILD_CAUSE for each build that contains the information you seek. The values are something like 'UPSTREAMTRIGGER', 'SCMTRIGGER', 'TIMERTRIGGER', and so forth.
 
Also, if you have Conditional BuildStep Plugin, it contains condition for Build Cause, which lists all registered triggers.

-Olli