Parameterized build

[Yogesh J]

Hi All, 

Problem statement: 

Jenkins build must be automated i.e Given a branch as input to the script, the script must do Jenkins build with the specified git branch .

I have to build a project in Jenkins with varying configurations. (Configurations should be changed dynamically for each job - through passing parameters)

So, to achieve this , I am using " jenkins_api_client " which helps me to build a specified job :

Example : 

test_job = "some_test_job"

code = @client.job.build(test_job) . This will build successfully with default configuration, but I have to override this configuration and pass the branch name as parameter and build the project. 

I tried something like this :

test_job = "some_test_job"

params={}

params[:scm_branch] = "some_branch_name"

code = @client.job.build(test_job, params)

This gives me :

INFO : Building job 'some_test_job' with parameters: {:branch=>"some_branch_name"}

ERROR -- : JenkinsApi::Exceptions::InternalServerError: Internal Server Error. Perhaps the in-memory configuration Jenkins is different from the disk configuration. Please try to reload the configuration

(JenkinsApi::Exceptions::InternalServerError)

from /Users/yj051292/.rvm/gems/ruby-2.4.0@global/gems/jenkins_api_client-1.4.5/lib/jenkins_api_client/client.rb:405:in `api_post_request'

from /Users/yj051292/.rvm/gems/ruby-2.4.0@global/gems/jenkins_api_client-1.4.5/lib/jenkins_api_client/job.rb:858:in `build'

from jenkins_test.rb:47:in `<main>'

Is there anything wrong in passing the parameters ? Can anyone help me in building a project with parameters from the script ? 

Please post an example of building with parameters. 

Any thoughts and suggestions are much appreciated. Thank you .