Conditionally run commands

Build Environment
1

I would like to conditionally exit a job. Basically, I’m curling some info from the PR, and, depending on the data from that request, writing to a file, or not. I would like to exit the job depending on whether the file exists or not.

I tried:

steps:
      - attach_workspace:
          at: ~/  deploy_info
      - run: if [ ! -f ~/deploy_info/test_tags.txt ] ; then exit 0 ; fi

But that just exits that command and continues with the job

2

There is no way to do this right now, outside of wrapping the entire job in this type of conditional statement.

3

I’m doing the reverse, i’m triggering a job based on the existing file using a curl against the API: https://circleci.com/docs/api/v1-reference/#new-build-branch