Calculate elapsed time for a task in azure pipeline using inline PowerShell tasks-CodePudding

I am trying to calculate the time elapsed for a task in Azure Pipeline using PowerShell task on inline mode. Simplified setup looks like in the image as attached. The inline code is mentioned below. I am getting below specified error.

Calculating Elapsed Time...
Cannot find an overload for "op_Subtraction" and the argument count: "2".
At D:\a\_temp\ba6b91f4-ef47-4a51-8088-efc6bcda310d.ps1:5 char:1
  $duration_min = $end_time - $start_time
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      CategoryInfo          : NotSpecified: (:) [], ParentContainsErrorRecordException
      FullyQualifiedErrorId : MethodCountCouldNotFindBest
 
##[error]PowerShell exited with code '1'.

What is the right approach to measure the time elapsed for a build task?

Pipeline Setup:

Code in Get Start Time inline powershell task:

$start_time = Get-Date
Write-Host "Scanning Start Timestamp: $($start_time)"

Code in Calculate Elapsed Time inline powershell task:

Write-Host "Calculating Elapsed Time..."
$end_time = Get-Date
$duration_min = $end_time - $start_time
Write-Host ("Total Time Elapsed in Minutes: ", $duration_min.TotalMinutes)

CodePudding user response：

Variables between the tasks are independent. To pass the values between the tasks, we can use the pipeline variables. In your setup, go to Variables tab and create a new variable - say scan_start_time.

In the "Get Start Time" task add another line

Write-Output "##vso[task.setvariable variable=scan_start_time]$($start_time)"

Then in the "Calculate Elapsed Time" task

$start_time = "$(scan_start_time)"