Azure YAML Pipeline ServiceNow 连接器无法访问变量值

Question

我有一个 Azure YAML 管道，它在一个步骤中设置变量以在后续步骤中使用。例如，为变量设置时间戳，然后将其传递到“计划开始日期”字段的 ServiceNow 更改管理连接器中。问题是，计划的开始日期字段似乎不接受管道变量的任何语法。无论我如何尝试，管道都会失败。 ServiceNow 更改管理连接器存在于管道步骤中的环境检查中。

这是我的示例 YAML：

trigger:
  branches:
    include:
    - development
  paths:
    include:
    - /migrations

stages:
- stage: SetVariablesStage
  jobs:
  - job: SetVariableJob
    steps:
    - powershell: |
        $dateTimeFormat = "yyyy-MM-dd HH:mm:ss"
        $scheduledDateTimeFormat = "yyyy-MM-dd HH:mm"
        $plannedStartDateTime = (Get-Date).AddMinutes(-60).ToString($dateTimeFormat)
        $plannedEndDateTime = (Get-Date).ToString($dateTimeFormat)
        $scheduledStartDateTime = (Get-Date).AddMinutes(-60).ToString($scheduledDateTimeFormat)
        $scheduledEndDateTime = (Get-Date).ToString($scheduledDateTimeFormat)
        Write-Host "##vso[task.setvariable variable=plannedStartDateTime;isOutput=true]$plannedStartDateTime"
        Write-Host "##vso[task.setvariable variable=plannedEndDateTime;isOutput=true]$plannedEndDateTime"
        Write-Host "##vso[task.setvariable variable=scheduledStartDateTime;isOutput=true]$scheduledStartDateTime"
        Write-Host "##vso[task.setvariable variable=scheduledEndDateTime;isOutput=true]$scheduledEndDateTime"
        echo "plannedStartDateTime: $plannedStartDateTime"
        echo "plannedEndDateTime: $plannedEndDateTime"
        echo "scheduledStartDateTime: $scheduledStartDateTime"
        echo "scheduledEndDateTime: $scheduledEndDateTime"
      displayName: 'Set Custom Variables'
      name: SetVariableStep
    pool:
      vmImage: ubuntu-latest
- stage: 'dev_stage'
  dependsOn: SetVariablesStage
  variables:
    - group: TestPipeline-Variables_Dev
    - name: env
      value: "dev"
  jobs:      
  - deployment: DeployToDevelopment
    variables:
      plannedStartDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.plannedStartDateTime'] ]
      plannedEndDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.plannedEndDateTime'] ]
      scheduledStartDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.scheduledStartDateTime'] ]
      scheduledEndDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.scheduledEndDateTime'] ]
    displayName: 'Deploying to Development'
    pool:
      vmImage: 'ubuntu-latest'
    environment: 
      name: 'Development'
    strategy:
      runOnce:
        deploy:
          steps:          
          - checkout: self
          - task: UsePythonVersion@0
            displayName: 'Use Python 3.8.x'
            inputs:
              versionSpec: '3.8.x'
          - task: Bash@3
            inputs:
              targetType: 'inline'
              script: |
                <redacted: Deployment script>

  - job: update_ServiceNow
    dependsOn: DeployToDevelopment
    variables:
      plannedStartDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.plannedStartDateTime'] ]
      plannedEndDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.plannedEndDateTime'] ]
      scheduledStartDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.scheduledStartDateTime'] ]
      scheduledEndDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.scheduledEndDateTime'] ]
    steps:
    - task: UpdateServiceNowChangeRequest@2
      inputs:
        ServiceNowConnection: 'ServiceNow_Sandbox'
        NewStatus: '6'
        otherParameters: '{  "u_work_notes": "$(Build.BuildNumber) $(plannedStartDateTime) $(plannedEndDateTime)", "u_scheduled_start": "$(scheduledStartDateTime)", "u_scheduled_end": "$(scheduledEndDateTime)"  }'
pool: server

ServiceNow 连接配置示例：

对于控制选项：链接变量组，我将其连接到正确的变量组。

当我运行管道时，环境检查失败。它与计划开始日期字段相关，因为如果我硬编码一个值，管道就会起作用。如果我删除该值，它可以工作，但后来由于我们现场 ServiceNow 中的业务规则而失败。

如何在字段中使用变量，这样我就不必对其进行硬编码？更新服务的管道中的最后一步现在可以正常工作。我可以使用管道变量正确设置“otherParameters”。只是不在环境检查 ServiceNow 连接器中。

Answer 1

问题是，计划的开始日期字段似乎不接受管道变量的任何语法。

环境审批中的

ServiceNow Change Management

cannot

直接调用上一阶段/作业中创建的变量。

您可以尝试将变量值输出到validate。例如，以

Approvals

输出：

要使用变量值，也可以将目标值放入

variable group

，并链接到

ServiceNow Change Management

中的该组，然后就可以使用里面的变量了。

我没有servicenow帐户，所以我以

rest api approval

为例进行了检查。

我更新了powershell任务中的变量组变量值。确保

{project} build service(org)

帐户在变量组安全性上具有管理员角色，以便它可以更新变量值。

stages:
- stage: SetVariablesStage
  jobs:
  - job: SetVariableJob
    steps:
    - powershell: |
        $dateTimeFormat = "yyyy-MM-dd HH:mm:ss"
        $scheduledDateTimeFormat = "yyyy-MM-dd HH:mm"
        $plannedStartDateTime = (Get-Date).AddMinutes(-60).ToString($dateTimeFormat)
        $plannedEndDateTime = (Get-Date).ToString($dateTimeFormat)
        $scheduledStartDateTime = (Get-Date).AddMinutes(-60).ToString($scheduledDateTimeFormat)
        $scheduledEndDateTime = (Get-Date).ToString($scheduledDateTimeFormat)
        Write-Host "##vso[task.setvariable variable=plannedStartDateTime;isOutput=true]$plannedStartDateTime"
        Write-Host "##vso[task.setvariable variable=plannedEndDateTime;isOutput=true]$plannedEndDateTime"
        Write-Host "##vso[task.setvariable variable=scheduledStartDateTime;isOutput=true]$scheduledStartDateTime"
        Write-Host "##vso[task.setvariable variable=scheduledEndDateTime;isOutput=true]$scheduledEndDateTime"
        echo "plannedStartDateTime: $plannedStartDateTime"
        echo "plannedEndDateTime: $plannedEndDateTime"
        echo "scheduledStartDateTime: $scheduledStartDateTime"
        echo "scheduledEndDateTime: $scheduledEndDateTime"
      displayName: 'Set Custom Variables'
      name: SetVariableStep
  
    - powershell: |
        $url = "$($env:SYSTEM_TEAMFOUNDATIONCOLLECTIONURI)$env:SYSTEM_TEAMPROJECTID/_apis/distributedtask/variablegroups/27?api-version=5.0-preview.1"
        Write-Host $url
        $json = '{"id":27,"type":"Vsts","name":"TestPipeline-Variables_Dev","variables":{"plannedStartDateTimeVG":{"isSecret":false,"value":"$(SetVariableStep.plannedStartDateTime)"}, "plannedEndDateTimeVG":{"isSecret":false,"value":"$(SetVariableStep.plannedEndDateTime)"}}}'
        $pipeline = Invoke-RestMethod -Uri $url -Method Put -Body $json -ContentType "application/json" -Headers @{
            Authorization = "Bearer $env:SYSTEM_ACCESSTOKEN"
        }
        Write-Host "New Variable Value:" $pipeline.variables.plannedStartDateTimeVG.value
        Write-Host "New Variable Value:" $pipeline.variables.plannedEndDateTimeVG.value
      env:
        SYSTEM_ACCESSTOKEN: $(system.accesstoken)
    pool:
      vmImage: ubuntu-latest

- stage: 'dev_stage'
  dependsOn: SetVariablesStage
  variables:
    - group: TestPipeline-Variables_Dev
    - name: env
      value: "dev"
  jobs:      
  - deployment: DeployToDevelopment
    variables:
      plannedStartDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.plannedStartDateTime'] ]
      plannedEndDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.plannedEndDateTime'] ]
      scheduledStartDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.scheduledStartDateTime'] ]
      scheduledEndDateTime: $[ stageDependencies.SetVariablesStage.SetVariableJob.outputs['SetVariableStep.scheduledEndDateTime'] ]
    displayName: 'Deploying to Development'
    pool:
      vmImage: 'ubuntu-latest'
    environment: 
      name: 'Development'
    strategy:
      runOnce:
        deploy:
          steps:          
          - checkout: self
          - task: UsePythonVersion@0
            displayName: 'Use Python 3.8.x'
            inputs:
              versionSpec: '3.8.x'
          - task: Bash@3
            inputs:
              targetType: 'inline'
              script: |
                echo 1 $(plannedStartDateTime)
                echo 2 $(plannedEndDateTime)
                echo 3 $(scheduledStartDateTime)
                echo 4 $(scheduledEndDateTime)

我只是从 url 中的变量组中调用变量：

确认管道启动时变量已正确获取到rest api url。