Project common parameters

[Lesley Kimmel]

Hello, most of our projects tend to create 2 separate jobs; one for each of 2 different "environments" (e.g. stg/prd).

The values of most vars we pass to job-templates through the project definitions tend to be pretty static so I decided to use include files with the "default" values per-environment:

# stg-yaml.incl

node_name: node1

env_name: stg

# prd-yaml.incl

node_name: node2

env_name: prd

project:

  name: project1

  jobs:

    - project1-{env_name}:

        !include: stg-yaml.incl

    - project1-{env_name}:

        !include: prd-yaml.incl

The problem is that, sometimes, I'd like to pass project-specific vars to job-templates but it doesn't appear there is a way provide key/value pairs alongside the use of '!include'. For example:

- project1-{env_name}:

    !include: stg.yaml.incl

    custom_var: value1

Throws: ScannerError: mapping values are not allowed here

I also attempted to use the '!include' in an anchor and then alias it within the project definition:

- project_defaults:

    name: project_defaults

    stg_defaults: &stg-vars

      !include: stg.yaml.incl

- project:

  name: project1

  jobs:

    - project1-{env_name}:

        <<: *stg-vars

        custom_var: value1

But then it errors saying a mapping is expected but found a scalar.

What is the recommended way to use environment-specific variable defaults that can be added to and/or overridden?

[Vsevolod Fedorov]

Hi, Lesley.

You can use defaults and parametrize jobs by a list, like in documentation here:
https://jenkins-job-builder.readthedocs.io/en/latest/definition.html#project-1

For example:

defaults:
  name: global
  my_config_2: default-config-2
  env:
    - prod:
        my_config_1: prod-config-1
        my_config_2: prod-config-2
    - dev:
        my_config_1: dev-config-1

project:
  jobs:
    name: project-1
    jobs:
      - build-{env}

Vsevolod.

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