Private/Invoke-OpenAIAPIRequestSSE.ps1
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using namespace System.Text using namespace System.Net using namespace System.Net.Http using namespace System.Management.Automation using namespace Microsoft.PowerShell.Commands # Workaround for assemblies loading issue on PS5.1 if ($PSVersionTable.PSVersion.Major -le 5) { Add-Type -AssemblyName System.Net.Http } function Invoke-OpenAIAPIRequestSSE { [CmdletBinding()] param ( [Parameter()] [string]$Method = 'Post', [Parameter(Mandatory = $true)] [System.Uri]$Uri, [Parameter()] [string]$ContentType = 'application/json', [Parameter(Mandatory = $true)] [ValidateNotNull()] [securestring]$ApiKey, [Parameter()] [string]$Organization, [Parameter()] [object]$Body, [Parameter()] [int]$TimeoutSec = 0, [Parameter()] [int]$MaxRetryCount = 0, [Parameter()] [int]$RetryCount = 0, [Parameter()] [ValidateSet('openai', 'azure', 'azure_ad')] [string]$AuthType = 'openai' ) #region Set variables $IsDebug = Test-Debug $ServiceName = switch -Wildcard ($AuthType) { 'openai*' { 'OpenAI' } 'azure*' { 'Azure' } } #endregion # Decrypt securestring $bstr = [Marshal]::SecureStringToBSTR($ApiKey) $PlainToken = [Marshal]::PtrToStringBSTR($bstr) # Create HttpClient and messages $HttpClient = [System.Net.Http.HttpClient]::new() $RequestMessage = [System.Net.Http.HttpRequestMessage]::new($Method, $Uri) # Use HTTP/2 if ($null -ne [System.Net.HttpVersion]::Version20) { $RequestMessage.Version = [System.Net.HttpVersion]::Version20 } if ($null -ne $Body) { $RequestMessage.Content = [System.Net.Http.StringContent]::new(($Body | ConvertTo-Json -Compress), [Encoding]::UTF8, $ContentType) } # Set User-Agent if (-not $script:UserAgent) { $script:UserAgent = Get-UserAgent } $RequestMessage.Headers.Add('User-Agent', $script:UserAgent) # Set debug header if ($IsDebug) { $RequestMessage.Headers.Add('OpenAI-Debug', 'true') } switch ($AuthType) { 'openai' { $RequestMessage.Headers.Authorization = [System.Net.Http.Headers.AuthenticationHeaderValue]::new('Bearer', $PlainToken) if (-not [string]::IsNullOrWhiteSpace($Organization)) { $RequestMessage.Headers.Add('OpenAI-Organization', $Organization.Trim()) } } 'azure' { $RequestMessage.Headers.Add('api-key', $PlainToken) } 'azure_ad' { $RequestMessage.Headers.Authorization = [System.Net.Http.Headers.AuthenticationHeaderValue]::new('Bearer', $PlainToken) } } # Set timeout $cts = [System.Threading.CancellationTokenSource]::new() if ($TimeoutSec -gt 0 -and $TimeoutSec -lt ([int]::MaxValue / 1000)) { $cts.CancelAfter($TimeoutSec * 1000) } $CancelToken = $cts.Token # Verbose / Debug output Write-Verbose -Message "Request to $ServiceName API" Write-Verbose -Message ('Request HTTP/{0} {1} with {2}-byte payload' -f ` $RequestMessage.Version, $RequestMessage.Method, ` $($RequestMessage.Content.Headers.ContentLength -as [Int64])) if ($IsDebug) { $startIdx = $lastIdx = 2 if ($AuthType -eq 'openai') { $startIdx += 4 } # 'org-' Write-Debug -Message (Get-MaskedString ` ('Request parameters: ' + ($RequestMessage | fl ` Method, ` RequestUri, ` @{name = 'Headers'; expression = { $_.Headers.ToString() } } ` | Out-String)).TrimEnd() ` -Target ($ApiKey, $Organization) -First $startIdx -Last $lastIdx -MaxNumberOfAsterisks 45) } # Send API Request try { $HttpResponse = $HttpClient.SendAsync($RequestMessage, [System.Net.Http.HttpCompletionOption]::ResponseHeadersRead, $CancelToken).GetAwaiter().GetResult() #region On HTTP error if (-not $HttpResponse.IsSuccessStatusCode) { $ErrorCode = $HttpResponse.StatusCode.value__ $ErrorReason = $HttpResponse.ReasonPhrase $ErrorResponse = $HttpResponse.Content.ReadAsStringAsync().GetAwaiter().GetResult() $ErrorMessage = try { ($ErrorResponse | ConvertFrom-Json -ErrorAction Ignore).error.message }catch {} # Retry on [429] or [5xx] if (($ErrorCode -ge 500 -and $ErrorCode -le 599) -or ($ErrorCode -eq 429 -and ($ErrorMessage -notmatch 'quota'))) { if ($RetryCount -lt $MaxRetryCount) { $Delay = Get-RetryDelay -RetryCount $RetryCount Write-Warning ('{3} API returned an {0} ({1}) Error: {2}' -f $ErrorCode, $ErrorReason, $ErrorMessage, $ServiceName) Write-Warning ('Retry the request after waiting {0} ms (retry count: {1})' -f $Delay, $RetryCount) Start-Sleep -Milliseconds $Delay $PSBoundParameters.RetryCount = (++$RetryCount) Invoke-OpenAIAPIRequestSSE @PSBoundParameters return } } # Throw exception if ($PSVersionTable.PSVersion.Major -ge 6) { $detailMessage = ('{3} API returned an {0} ({1}) Error: {2}' -f $ErrorCode, $ErrorReason, $ErrorMessage, $ServiceName) $ex = ([Microsoft.PowerShell.Commands.HttpResponseException]::new($detailMessage, $HttpResponse)) } else { # Throws Webexception (Not HttpRequestException) for consistency with # exceptions thrown by Invoke-WebRequest on Windows PowerShell 5.1 # (this may change in the future) $detailMessage = ('{3} API returned an {0} ({1}) Error: {2}' -f $ErrorCode, $ErrorReason, $ErrorMessage, $ServiceName) $ex = ([WebException]::new($detailMessage)) } $er = [ErrorRecord]::new( $ex, 'PSOpenAI.APIRequest.HttpResponseException', [ErrorCategory]::InvalidOperation, $RequestMessage ) $er.ErrorDetails = $detailMessage $PSCmdlet.ThrowTerminatingError($er) return } #endregion $ResponseStream = $HttpResponse.Content.ReadAsStreamAsync().Result $StreamReader = [System.IO.StreamReader]::new($ResponseStream, [Encoding]::UTF8) # Verbose / Debug output Write-Verbose -Message ('Received HTTP/{0} response of content type {1}' -f $HttpResponse.Version, $HttpResponse.Content.Headers.ContentType.MediaType) Write-Verbose -Message ("$ServiceName API response: " + ($HttpResponse | fl ` StatusCode, ` @{name = 'processing_ms'; expression = { $_.Headers.GetValues('openai-processing-ms')[0] } }, ` @{name = 'request_id'; expression = { $_.Headers.GetValues('X-Request-Id')[0] } } ` | Out-String)).TrimEnd() # Don't read the whole stream for debug logging unless necessary. if ($IsDebug) { $startIdx = $lastIdx = 2 if ($AuthType -eq 'openai') { $startIdx += 4 } # 'org-' Write-Debug -Message (Get-MaskedString ` ('API response header: ' + ($HttpResponse.Headers | ft -Hide | Out-String)).TrimEnd() ` -Target ($ApiKey, $Organization) -First $startIdx -Last $lastIdx -MaxNumberOfAsterisks 45) } while (-not $StreamReader.EndOfStream) { $data = $null #Timeout $CancelToken.ThrowIfCancellationRequested() #Retrive response content $data = [string]$StreamReader.ReadLine() # Skip on empty if (-not $data.StartsWith('data: ')) { continue } # Debug output if ($IsDebug) { Write-Debug -Message ('API response body: ' + ($data | Out-String)).TrimEnd() } # End of stream if ($data -eq 'data: [DONE]') { break } #Output Write-Output $data.Substring(6) # ("data: ").Length -> 6 } } catch [OperationCanceledException] { # Convert OperationCanceledException to TimeoutException $er = [ErrorRecord]::new( ([TimeoutException]::new('The operation was canceled due to timeout.', $_.Exception)), 'PSOpenAI.APIRequest.TimeoutException', [ErrorCategory]::OperationTimeout, $RequestMessage ) $er.ErrorDetails = $_.Exception.Message $PSCmdlet.ThrowTerminatingError($er) } catch { $PSCmdlet.ThrowTerminatingError($_) } finally { $bstr = $PlainToken = $null try { if ($null -ne $cts) { $cts.Dispose() } if ($null -ne $HttpClient) { $HttpClient.Dispose() } if ($null -ne $HttpResponse) { $HttpResponse.Dispose() } if ($null -ne $ResponseStream) { $ResponseStream.Dispose() } if ($null -ne $RequestMessage) { $RequestMessage.Dispose() } } catch {} } } |