Run specific job in Gitlab CI base on a condition

Question

I have a repo QA/tests which I want to run all the jobs when there is a push to this repo.

I used a script to generate the jobs dynamically:

job-generator:
  stage: generate
  tags:
    - kuber
  script:
    - scripts/generate-job.sh > generated-job.yml
  artifacts:
    paths:
      - generated-job.yml

main:
  trigger:
    include:
      - artifact: generated-job.yml
        job: job-generator
    strategy: depend

At the next step, I have another repo products/first which I want to run a specific job in QA/tests at every push in the products/first so I tried:

stages:
  - test

tests:
  stage: test
  variables:
    TARGET: first
  trigger:
    project: QA/tests
    branch: master
    strategy: depend

Then I tried to define a global TARGET: all variable in my main gitlab-ci.yml and override it with the TARGET: first in the above YAML.

generate-job.sh:

#!/bin/bash

PRODUCTS=("first" "second" "third")

for P in "${PRODUCTS[@]}"; do
cat << EOF
$P:
  stage: test
  tags:
    - kuber
  script:
    - echo -e "Hello from $P"
  rules:
    - if: '"$TARGET" == "all"'
      when: always
    - if: '"$TARGET" == $P'
      when: always

EOF
done

But no results. the downstream pipeline doesn't have any job at all!

Any idea?

Answer 1

I solved it with:

gitlab-ci.yml:

variables:
  TARGET: all

job-generator:
  stage: generate
  tags:
    - kuber
  script:
    - scripts/generate-job.sh > generated-job.yml
  artifacts:
    paths:
      - generated-job.yml

main:
  variables:
    CHILD_TARGET: $TARGET
  trigger:
    include:
      - artifact: generated-job.yml
        job: job-generator
    strategy: depend

and use CHILD_TARGET in my generate-job.sh:

#!/bin/bash

PRODUCTS=("first" "second" "third")

for P in "${PRODUCTS[@]}"; do
cat << EOF
$P:
  stage: test
  tags:
    - kuber
  script:
    - echo -e "Hello from $P"
  rules:
    - if: '\$CHILD_TARGET == "all"'
      when: always
    - if: '\$CHILD_TARGET == "$P"'
      when: always

EOF
done

So I could call it from other projects like this:

stages:
  - test

e2e-tests:
  stage: test
  variables:
    TARGET: first
  trigger:
    project: QA/tests
    branch: master
    strategy: depend