/chain-pr-example

Chain PR Example

To use chain PR feature in Screwdriver.cd, set true in pipeline-level annotation screwdriver.cd/chainPR.
Then, subsequent jobs in PR event will be chained according to the workflow in PR.

Example

Firstly, set true in the screwdriver.cd/chainPR annotaion.
This annotation must be configured in main branch.

# screwdriver.yaml in main branch

shared:
    image: node:8

annotations:
    screwdriver.cd/chainPR: true

jobs:
    first-job:
        requires: [ ~pr, ~commit ]
        steps:
            - echo: echo "this is first job."
    second-job:
        requires: [ first-job ]
        steps:
            - echo: echo "this is second job."

Then, if you make a PR, subsequent jobs in PR branch will be chained according to workflow in PR event.
In this example, second-job will be executed after the first-job, and third-job will be executed after the second-job.

# screwdriver.yaml in PR branch

shared:
    image: node:8

annotations:
    screwdriver.cd/chainPR: true

jobs:
    first-job:
        requires: [ ~pr, ~commit ]
        steps:
            - echo: echo "this is first job."
    second-job:
        requires: [ first-job ]
        steps:
            - echo: echo "this is second job."
    third-job:
        requires: [ second-job ]
        steps:
            - echo: echo "this is third job."