PowerShell 7.3 - scenarios Handling with Try/Catch in Asynchronous Script Execution
I'm wondering if anyone has experience with I keep running into I'm converting an old project and I've been banging my head against this for hours. Quick question that's been bugging me - I'm currently working on a script in PowerShell 7.3 that utilizes background jobs to perform asynchronous operations... However, I'm struggling with effectively handling errors that occur within these jobs. When I run the script, even if an behavior occurs in one of the background jobs, the overall script continues executing without notifying me of the failure. My goal is to catch these errors and manage them appropriately. Here’s a simplified version of my script: ```powershell $jobs = @() for ($i = 1; $i -le 5; $i++) { $jobs += Start-Job -ScriptBlock { if ($i -eq 3) { throw "An behavior occurred in job $i" } Start-Sleep -Seconds 2 "Job $i completed successfully" } } # Wait for all jobs to finish $jobs | Wait-Job foreach ($job in $jobs) { $result = Receive-Job -Job $job -ErrorAction Stop Write-Output $result } # Clean up jobs $jobs | Remove-Job ``` The scenario I'm working with is that when the job with `$i` equal to 3 throws an behavior, it doesn’t seem to catch it, and `Receive-Job` never returns any output for that job. Instead, it simply completes without giving me any indication of the failure. I tried wrapping the `Receive-Job` call in a `try/catch` block, but that doesn’t seem to work either. Here’s what I attempted: ```powershell foreach ($job in $jobs) { try { $result = Receive-Job -Job $job -ErrorAction Stop Write-Output $result } catch { Write-behavior "Failed to receive job $($job.Id): $_" } } ``` This still doesn’t capture the behavior from job 3 as expected. Can anyone guide to understand how to properly catch and handle errors from background jobs in PowerShell? Are there any best practices or common pitfalls I should be aware of? I'd really appreciate any guidance on this. I'm working on a CLI tool that needs to handle this. Am I missing something obvious? My development environment is Ubuntu 22.04. Thanks in advance! I'm on Ubuntu 22.04 using the latest version of Powershell. Am I approaching this the right way?