Private/Invoke/Invoke-CWMWebRequest.ps1
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function Invoke-CWMWebRequest { [CmdletBinding()] param( $Arguments, [int]$MaxRetry = 5 ) # Check that we have cached connection info if(!$script:CWMServerConnection){ $ErrorMessage = @() $ErrorMessage += "Not connected to a Manage server." $ErrorMessage += '--> $CWMServerConnection variable not found.' $ErrorMessage += "----> Run 'Connect-CWM' to initialize the connection before issuing other CWM cmdlets." return Write-Error ($ErrorMessage | Out-String) } # Add default set of arguments foreach($Key in $script:CWMServerConnection.Headers.Keys){ if($Arguments.Headers.Keys -notcontains $Key){ # Set version if ($Key -eq 'Accept' -and $Arguments.Version -and $Arguments.Version -ne $script:CWMServerConnection.Version) { $Arguments.Headers.Accept = "application/vnd.connectwise.com+json; version=$($Arguments.Version)" Write-Verbose "Version Passed: $($Arguments.Version)" } else { $Arguments.Headers += @{$Key = $script:CWMServerConnection.Headers.$Key} } } } $Arguments.Remove('Version') if(!$Arguments.SessionVariable){ $Arguments.WebSession = $script:CWMServerConnection.Session } # Check URI format if($Arguments.URI -notlike '*`?*' -and $Arguments.URI -like '*`&*') { $Arguments.URI = $Arguments.URI -replace '(.*?)&(.*)', '$1?$2' } # Issue request try { Write-Debug "Arguments: $($Arguments | ConvertTo-Json)" $Result = Invoke-WebRequest @Arguments -UseBasicParsing -AllowInsecureRedirect } catch { # Start error message $ErrorMessage = @() if($_.Exception.Response){ try { # Read exception response #this can fail with some type of exceptions $ErrorStream = $_.Exception.Response.GetResponseStream() $Reader = New-Object System.IO.StreamReader($ErrorStream) $script:ErrBody = $Reader.ReadToEnd() | ConvertFrom-Json } catch { $script:ErrBody = $_.Exception.Response.Content } $ErrBody = $script:ErrBody if($ErrBody.code){ $ErrorMessage += "An exception code has been thrown." $ErrorMessage += "--> $($ErrBody.code)" if($ErrBody.code -eq 'Unauthorized'){ $ErrorMessage += "-----> $($ErrBody.message)" $ErrorMessage += "-----> Use 'Disconnect-CWM' or 'Connect-CWM -Force' to set new authentication." } elseif($ErrBody.code -eq 'ConnectWiseApi'){ switch($ErrBody.message){ 'UserNotAuthenticated' { $ErrorMessage += "-----> $($ErrBody.message)" $ErrorMessage += "-----> Check your connection parameters and/or user permissions." } Default { $ErrorMessage += "-----> $($ErrBody.message)" $ErrorMessage += "-----> ^ Error has not been documented please report. ^" } } } else { $ErrorMessage += "-----> $($ErrBody.message)" $ErrorMessage += "-----> ^ Error has not been documented please report. ^" } } elseif ($_.Exception.message) { $ErrorMessage += "An exception has been thrown." $ErrorMessage += "--> $($_.Exception.message)" } } if ($_.ErrorDetails) { $ErrorMessage += "An error has been thrown." $script:ErrDetails = $_.ErrorDetails $ErrorMessage += "--> $($ErrDetails.code)" $ErrorMessage += "--> $($ErrDetails.message)" if($ErrDetails.errors.message){ $ErrorMessage += "-----> $($ErrDetails.errors.message)" } } if ($ErrorMessage.Length -lt 1){ $ErrorMessage = $_ } else { $ErrorMessage += $_.ScriptStackTrace } return Write-Error ($ErrorMessage | out-string) } # Not sure this will be hit with current iwr error handling # May need to move to catch block need to find test # TODO Find test for retry # Retry the request $Retry = 0 while ($Retry -lt $MaxRetry -and $Result.StatusCode -ge 500) { $Retry++ # ConnectWise Manage recommended wait time $Wait = $([math]::pow( 2, $Retry)) Write-Warning "Issue with request, status: $($Result.StatusCode) $($Result.StatusDescription)" Write-Warning "$($Retry)/$($MaxRetry) retries, waiting $($Wait)ms." Start-Sleep -Milliseconds $Wait $Result = Invoke-WebRequest @Arguments -UseBasicParsing -AllowInsecureRedirect } if ($Retry -ge $MaxRetry) { return Write-Error "Max retries hit. Status: $($Result.StatusCode) $($Result.StatusDescription)" } # Save current version if (!$script:CWMServerConnection.'api-current-version') { $script:CWMServerConnection.'api-current-version' = $Result.Headers.'api-current-version' } $Result } |