Queue Workflows

Currently running 1 workflow at a time is not a possibility on CircleCI. This is where the CircleCI orb steps in and makes things a lot simpler. With the use of the CircleCI API, you can ensure that only workflow runs at a time.

version: 2.1
orbs:
  swissknife: roopakv/[email protected]
jobs:
  some-job:
    docker:
      - image: "circleci/node:latest"
    steps:
      - swissknife/wait_for_workflow:
          max-wait-time: "1800"
          workflow-name: ^(staging|production)$

the wait_for_workflow command ensures that only 1 workflow with the name staging or production can run at a time. Today if you have a deploy job there is no guarantee that only one staging deploy can run at a time.

You also have the option to end gracefully or fail the job if the timeout fails.

Use cases

Run only one deploy at a time.
If you have limited resources, say number of parallel runs on Browserstack or Saucelabs, make sure workflows using these services run by one.
Run database migrations one by one
Run terraform plan and applies one by one.

note

Currently this command checks only on one branch (i.e. it checks that only 1 staging workflow is running for the current branch). We are working on a v2 that fixes this limitation.

Use cases#

note

Use cases