Bitbucket Pipelines share SOME steps between branches - bitbucket

Question

Is it possible to share steps between branches and still run branch specific steps? For example, the develop and release branch has the same build process, but uploaded to separate S3 buckets.
pipelines:
default:
- step:
script:
- cd source
- npm install
- npm build
develop:
- step:
script:
- s3cmd put --config s3cmd.cfg ./build s3://develop
staging:
- step:
script:
- s3cmd put --config s3cmd.cfg ./build s3://staging
I saw this post (Bitbucket Pipelines - multiple branches with same steps) but it's for the same steps.

Answer 1

Use YAML anchors:
definitions:
steps:
- step: &Test-step
name: Run tests
script:
- npm install
- npm run test
- step: &Deploy-step
name: Deploy to staging
deployment: staging
script:
- npm install
- npm run build
- fab deploy
pipelines:
default:
- step: *Test-step
- step: *Deploy-step
branches:
master:
- step: *Test-step
- step:
<<: *Deploy-step
name: Deploy to production
deployment: production
trigger: manual
Docs: https://confluence.atlassian.com/bitbucket/yaml-anchors-960154027.html

Answer 2

Although it's not officially supported yet, you can pre-define steps now.
You can use yaml anchors.
I got this tip from bitbucket staff when I had an issue running the same steps across a subset of branches.
definitions:
step: &Build
name: Build
script:
- npm install
- npm build
pipelines:
default:
- step: *Build
branches:
master:
- step: *Build
- step:
name: deploy
# do some deploy from master only

Answer 3

I think Bitbucket can't do it. You can use one pipeline and check the branch name:
pipelines:
default:
- step:
script:
- cd source
- npm install
- npm build
- if [[ $BITBUCKET_BRANCH = develop ]]; then s3cmd put --config s3cmd.cfg ./build s3://develop; fi
- if [[ $BITBUCKET_BRANCH = staging ]]; then s3cmd put --config s3cmd.cfg ./build s3://staging; fi
The two last lines will be executed only on the specified branches.

Answer 4

You can define and re-use steps with YAML Anchors.
anchor & to define a chunk of configuration
alias * to refer to that chunk elsewhere
And the source branch is saved in a default variable called BITBUCKET_BRANCH
You'd also need to pass the build results (in this case the build/ folder) from one step to the next, which is done with artifacts.
Combining all three will give you the following config:
definitions:
steps:
- step: &build
name: Build
script:
- cd source
- npm install
- npm build
artifacts: # defining the artifacts to be passed to each future step.
- ./build
- step: &s3-transfer
name: Transfer to S3
script:
- s3cmd put --config s3cmd.cfg ./build s3://${BITBUCKET_BRANCH}
pipelines:
default:
- step: *build
develop:
- step: *build
- step: *s3-transfer
staging:
- step: *build
- step: *s3-transfer
You can now also use glob patterns as mentioned in the referenced post and steps for both develop and staging branches in one go:
"{develop,staging}":
- step: *build
- step: *s3-transfer

Answer 5

Apparently it's in the works. Hopefully available soon.
https://bitbucket.org/site/master/issues/12750/allow-multiple-steps?_ga=2.262592203.639241276.1502122373-95544429.1500927287