private/rollbackAndWarn.ps1
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# called by Invoke-HelmUpgrade function rollbackAndWarn { [CmdletBinding()] param ($SkipRollbackOnError, $releaseName, $msg, $prevVersion) try { Write-Verbose "helm status --namespace $Namespace $ReleaseName -o json" $currentReleaseVersion = helm status --namespace $Namespace $ReleaseName -o json | ConvertFrom-Json -Depth 10 -AsHashtable # AsHashTable allows for duplicate keys in env, etc. if (!$currentReleaseVersion -or !($currentReleaseVersion.ContainsKey('version'))) { Write-Status "Unexpected response from helm status, not rolling back" -LogLevel warning Write-Status "Current helm release: $($currentReleaseVersion | ConvertTo-Json -Depth 20 -EnumsAsStrings)" return [RollbackStatus]::HelmStatusFailed } Write-Verbose "Current version of $ReleaseName is $($currentReleaseVersion.version)" if (!$currentReleaseVersion -or $currentReleaseVersion.version -eq $prevVersion) { Write-Status "No change in release '$ReleaseName', not rolling back $($currentReleaseVersion.version) = $prevVersion" -LogLevel warning # throw "$msg, no change" Write-Warning "$msg, no change" return [RollbackStatus]::NoChange } if (!$SkipRollbackOnError) { Write-Header "Rolling back release '$ReleaseName' from $($currentReleaseVersion.version) back to $prevVersion due to errors" -LogLevel Error $errFile = Get-TempLogFile helm rollback $ReleaseName --wait 2>&1 | Tee-Object $errFile | Write-MyHost $exit = $LASTEXITCODE $content = Get-Content $errFile -Raw if ($exit -ne 0 -and ($content -like '*Error: release has no 0 version*' -or $content -like '*Error: release: not found*')) { Write-Verbose "Last exit code on rollback was $exit." Write-Status "Helm rollback failed, trying uninstall" -LogLevel Error helm uninstall $ReleaseName 2>&1 | Write-MyHost } Remove-Item $errFile -ErrorAction SilentlyContinue Write-Footer "End rolling back release '$ReleaseName' due to errors" # throw "$msg, rolled back" Write-Warning "$msg, rolled back" return [RollbackStatus]::RolledBack } else { # throw "$msg, but not rolling back since -SkipRollbackOnError was specified" Write-Warning "$msg, but not rolling back since -SkipRollbackOnError was specified" return [RollbackStatus]::Skipped } return [RollbackStatus]::DeployedOk } catch { Write-Warning "Caught error rolling back in catch" Write-Warning "$_`n$($_.ScriptStackTrace)" return [RollbackStatus]::HelmStatusFailed } } |