Using CircleCI config 2.1, it's not possible to trigger a single job via API v1.1. One way to do it for now is to use a conditional workflow with the new API v2.
Instructions
Let's see the example below so that we're going to trigger only the deploy_to_dev job using the API.
# config.yml
version: 2.1
executors:
node-executor:
docker:
- image: circleci/node:10.8
# Set parameter here
parameters:
deploy_to_dev:
type: boolean
default: false
jobs:
build:
executor: node-executor
steps:
- checkout
- unless:
condition: << pipeline.parameters.deploy_to_dev >> # by default this is triggered
steps:
- run: # build
deploy_to_dev:
executor: node-executor
steps:
- checkout
- when:
condition: << pipeline.parameters.deploy_to_dev >> # this would be triggered when you pass the parameter value via API
steps:
- run: # deploy steps
# do deploy to dev
workflows:
version: 2
build-deploy:
jobs:
- build
- deploy_to_dev
In this case, by default pipeline.parameters.deploy_to_dev is false since we set the parameter to false by default. So when you trigger the pipeline, deploy_to_dev won't be triggered. However, triggering it with API 2 makes a magic.
curl -u ${CIRCLECI_TOKEN}: -X POST --header "Content-Type: application/json" -d '{
"parameters": {
"deploy_to_dev": true
}
}' https://circleci.com/api/v2/project/${project_slug}/pipeline
Outcome
With the parameter set on body, CircleCI knows that it's time to trigger deploy_to_dev and that would be the only job triggered.
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