Issue
I am using Jenkins integration server for my CI/CD. I am working with freestyle projects. I want to get build duration once finished (in seconds) using RESTFUL API (JSON).
This is what i tried:
"duration=$(curl -g -u login:token--silent "$BUILD_URL/api/json?pretty=true&tree=duration" | jq -r '.duration')"
Duration is always equel to 0 even though i did this shell script in a post buil task.
Solution
The Api call for the build will not contain the duration attribute as long as the build is running, and therefore you cannot use that mechanism during the build duration.
However you have a nice alternative for achieving what you want using Freestyle jobs.
The solution, which still uses the Api method, is to create a separate generic job for updating your data base with the results, this jobs will receive as parameters the project name and the build number, run the curl command for receiving the duration, update your database and run any other logic you need.
This job can now be called from any freestyle job using the Parameterized Trigger plugin post task with the relevant build environment parameters.
This has the additional benefit that the duration update mechanism is controlled in a single job and if updates are needed they can be made in a single location avoiding the need to update all separate jobs.
Assuming your job is called Update-Duration and it receives two parameters Project and Build the post trigger can look like the following:
And thats it, just add this tigger to any job that needs it, and in the future you can update the logic without changing the calling jobs.
Small thing, in order to avoid a race condition that can be caused if the caller job has not yet finished the execution you can increase the quite period of your data base updater job to allow enough time for the caller jobs to finish so the duration will be populated.
Answered By - Noam Helmer
