Service Fabric Start-ServiceFabricApplicationUpgrade - 如何让 powershell 在继续之前等待升级成功

Posted 2023-03-27

【中文标题】Service Fabric Start-ServiceFabricApplicationUpgrade - 如何让 powershell 在继续之前等待升级成功

【英文标题】：Service Fabric Start-ServiceFabricApplicationUpgrade - How to make powershell wait for successful upgrade before continuing

【发布时间】：2021-07-02 08:59:25

【问题描述】：

我正在放弃使用 Azure devops 管道“升级 Service Fabric 应用程序”任务，并将其替换为纯 PowerShell 方法。

Start-ServiceFabricApplicationUpgrade -ApplicationName fabric:/$(ServiceFabricApplicationName) -ApplicationTypeVersion $BuildNumber -ApplicationParameter $settings -Monitored -FailureAction Rollback

问题是当我使用 devops 管道任务时，它会等待升级完成并在控制台窗口中显示输出。当我使用我的自定义 powershell 时，它会立即执行并移至下一个管道任务，即使在我的集群中我可以看到升级刚刚开始。如何让它显示输出并等待成功，然后再继续？

【参考方案1】：

此命令Get-Service Fabric Application Upgrade 将获取 Service Fabric 应用程序升级的状态，因此我们可以在以下 PowerShell 脚本中使用它来获取此升级的结果。

## Start monitored application upgrade
try

    Write-Host "Start upgrading application..." 
    Start-ServiceFabricApplicationUpgrade -ApplicationName fabric:/$(ServiceFabricApplicationName) -ApplicationTypeVersion $BuildNumber -ApplicationParameter $settings -Monitored -FailureAction Rollback

catch

    Write-Host ("Error starting upgrade. " + $_)

    Write-Host "Unregister application..."
    Unregister-ServiceFabricApplicationType -ApplicationTypeName fabric:/$(ServiceFabricApplicationName) -ApplicationTypeVersion $BuildNumber -Force
    throw


do

    Write-Host "Waiting for upgrade..."
    Start-Sleep -Seconds 3
    $upgradeStatus = Get-ServiceFabricApplicationUpgrade -ApplicationName fabric:/$(ServiceFabricApplicationName)
 while ($upgradeStatus.UpgradeState -ne "RollingBackCompleted" -and $upgradeStatus.UpgradeState -ne "RollingForwardCompleted" -and $upgradeStatus.UpgradeState -ne "Failed")
    
if($upgradeStatus.UpgradeState -eq "RollingForwardCompleted")

    Write-Host "Upgrade completed successfully."

elseif($upgradeStatus.UpgradeState -eq "RollingBackCompleted")

    Write-Error "Upgrade was Rolled back."

elseif($upgradeStatus.UpgradeState -eq "Failed")

    Write-Error "Upgrade Failed."

因此，此 PowerShell 任务将等待此升级的结果，然后再移动到下一个管道任务。

【参考方案2】：

试试下面的方法，它会等待脚本块完成并运行下一行。

$job = Start-Job -ScriptBlock
    Start-ServiceFabricApplicationUpgrade -ApplicationName fabric:/$(ServiceFabricApplicationName) -ApplicationTypeVersion $BuildNumber -ApplicationParameter $settings -Monitored -FailureAction Rollback
 
Wait-Job $job.Name