How to trigger Agent Job As per condition using PowerShell in Azure Devops Pipeline

Question

I have a PowerShell as below:

echo "Hello-World"
$MyVariable = "Proceed"
echo $MyVariable

What I want to do :

If the MyVariable is " Proceed " Only and only then Agent Job2 Should run

I have used PowerShell task and Given Variable name as MyVariableOutput

I have done below configuration at Agent Job2 level

Can you please let me know how can I put these condition:

Only If the Powershell Script at Agent Job1 Produce the Proceed as the value of MyVariable Agent Job2 will run.

Note: Agent Job1 and Agent Job2 Are the part of the same release pipeline

Answer 1

If you prefer to configure your pipeline with GUI , you must run script to add the MyVariable as Variables instead of a temporary variable by calling this api . Because after the agent job1 finished, the variable you just defined with $MyVariable = "Proceed" will not transfer to the next agent job. The agent job1 and agent job2 are independent with each other.

---

In agent job1:

Configure 2 powershell tasks.

(1) The first one is used to define a variable with value and set it as output variable:

echo "Hello-World"
echo "##vso[task.setvariable variable=MyVariable;isOutput=true]Proceed"
echo $MyVariable

Do not forget specify its reference name MyVariableOutput in this task.

(2) The second job is used to add this output variable into Variables , then the agent job2 could access it:

$connectionToken="{token}"
$urlget = "https://vsrm.dev.azure.com/{org}/{project}/_apis/release/releases/$(Release.ReleaseId)?api-version=5.1"
$base64AuthInfo = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes(":$($connectionToken)"))
$getdef = Invoke-RestMethod -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)} -Method GET -ContentType application/json -Uri $urlget 
##Write-Host Pipeline = $($getdef | ConvertTo-Json -Depth 100)
$MyVariable=@"
    {
      "value": "$(MyVariableOutput.MyVariable)"
    }
"@
$getdef.variables | add-member -Name "MyVariable" -value (Convertfrom-Json $MyVariable) -MemberType NoteProperty -Force -PassThru

$getdef = $getdef | ConvertTo-Json -Depth 100
$getdef | clip
$urlput = "https://vsrm.dev.azure.com/{org}/{project}/_apis/release/releases/$(Release.ReleaseId)?api-version=5.1"
$putdef = Invoke-RestMethod -Uri $urlput -Method PUT -Body $getdef -ContentType "application/json" -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}

The above script will create a variable MyVariable which its value is Proceed .

---

In agent job2 , configure the condition as the shown below:

eq(variables['MyVariable'],'Proceed')

You can see the agent job2 can be run successfully since it has detect the value of MyVariable is Proceed .