CODEWITHSUNDEEP
azure-devopsazure-pipelines-yaml
user18610347
user18610347

Reputation: 133

Adding pipeline demands at run time in ADO YAML

How do I write my ADO YAML in such a way that there might be demands such as Agent.Name = 'abc' that might be needed occasionally while queuing the build? An example is if we want to investigate a build failure that is happening on a specific build agent Another use case is if there is a software upgrade such as .NET core and we want to test our build on the upgraded software on one agent before we upgrade the software on all the build agents

Classic pipelines had the ability to add demands without updating the pipeline.

enter image description here

Upvotes: 0

Views: 2299

Answers (2)

Hannes Falk
Hannes Falk

Reputation: 31

The problem is that ADO cannot read parameters in the same "stage" they are defined. So to get around that I ended up creating jobs and reading the parameter there. In this case it would look something like this:

parameters:
# Define a parameter
- name: demand
  displayName: Demand
  type: string
  default: DefaultPool
  values:
  - DefaultPool
  - SpecialSoftware

jobs:
  - job: My pipeline job
    pool:
      name: My_Pool
      demands: ${{ parameters.demand }}
    steps:
    - script: echo Hello, world!
      displayName: 'Run a one-line script'

Upvotes: 0

Vlad DX
Vlad DX

Reputation: 4730

You can create a YAML Pipeline in Azure DevOps and use parameter to tweak the demands:

# Add steps that build, run tests, deploy, and more:
# https://aka.ms/yaml

trigger:
- main

parameters:
# Define a parameter
- name: demand
  displayName: Demand
  type: string
  default: DefaultPool
  values:
  - DefaultPool
  - SpecialSoftware

variables:
  demand: '${{ parameters.demand }}'

pool:
  vmImage: ubuntu-latest
  # Use the variable
  ${{ if ne(variables['demand'], '') }}:
    demands: ${{variables.demand}}

steps:
- script: echo Hello, world!
  displayName: 'Run a one-line script'

When you want to manually run the pipeline, you can choose the value for the demand parameter:

Azure Pipeline with parameter

Documentation:

Upvotes: 0

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