GeezerVisonThe World Wide Web, restored to 800 pixels of glory. |
| Home|About|Gaming cabinet|Archives|How it works|Starter sites |
GeezerVison is showing github.com — llama-cpp-python/llama_cpp/server/errors.py at main · CISC/llama-cpp-python Expand file tree/ Copy patherrors.pyMore file actions 210 lines (185 loc) · 6.94 KB / Copy patherrors.pyFile metadata and controls210 lines (185 loc) · 6.94 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 from __future__ import annotations import sys import traceback import time from re import compile, Match, Pattern from typing import Callable, Coroutine, Optional, Tuple, Union, Dict from typing_extensions import TypedDict from fastapi import ( Request, Response, HTTPException, ) from fastapi.responses import JSONResponse from fastapi.routing import APIRoute from llama_cpp.server.types import ( CreateCompletionRequest, CreateEmbeddingRequest, CreateChatCompletionRequest, ) class ErrorResponse(TypedDict): """OpenAI style error response""" message: str type: str param: Optional[str] code: Optional[str] class ErrorResponseFormatters: """Collection of formatters for error responses. Args: request (Union[CreateCompletionRequest, CreateChatCompletionRequest]): Request body match (Match[str]): Match object from regex pattern Returns: Tuple[int, ErrorResponse]: Status code and error response """ @staticmethod def context_length_exceeded( request: Union["CreateCompletionRequest", "CreateChatCompletionRequest"], match, # type: Match[str] # type: ignore ) -> Tuple[int, ErrorResponse]: """Formatter for context length exceeded error""" context_window = int(match.group(2)) prompt_tokens = int(match.group(1)) completion_tokens = request.max_tokens if hasattr(request, "messages"): # Chat completion message = ( "This model's maximum context length is {} tokens. " "However, you requested {} tokens " "({} in the messages, {} in the completion). " "Please reduce the length of the messages or completion." ) else: # Text completion message = ( "This model's maximum context length is {} tokens, " "however you requested {} tokens " "({} in your prompt; {} for the completion). " "Please reduce your prompt; or completion length." ) return 400, ErrorResponse( message=message.format( context_window, (completion_tokens or 0) + prompt_tokens, prompt_tokens, completion_tokens, ), # type: ignore type="invalid_request_error", param="messages", code="context_length_exceeded", ) @staticmethod def model_not_found( request: Union["CreateCompletionRequest", "CreateChatCompletionRequest"], match, # type: Match[str] # type: ignore ) -> Tuple[int, ErrorResponse]: """Formatter for model_not_found error""" model_path = str(match.group(1)) message = f"The model `{model_path}` does not exist" return 400, ErrorResponse( message=message, type="invalid_request_error", param=None, code="model_not_found", ) class RouteErrorHandler(APIRoute): """Custom APIRoute that handles application errors and exceptions""" # key: regex pattern for original error message from llama_cpp # value: formatter function pattern_and_formatters: Dict[ "Pattern[str]", Callable[ [ Union["CreateCompletionRequest", "CreateChatCompletionRequest"], "Match[str]", ], Tuple[int, ErrorResponse], ], ] = { compile( r"Requested tokens \((\d+)\) exceed context window of (\d+)" ): ErrorResponseFormatters.context_length_exceeded, compile( r"Model path does not exist: (.+)" ): ErrorResponseFormatters.model_not_found, } def error_message_wrapper( self, error: Exception, body: Optional[ Union[ "CreateChatCompletionRequest", "CreateCompletionRequest", "CreateEmbeddingRequest", ] ] = None, ) -> Tuple[int, ErrorResponse]: """Wraps error message in OpenAI style error response""" print(f"Exception: {str(error)}", file=sys.stderr) traceback.print_exc(file=sys.stderr) if body is not None and isinstance( body, ( CreateCompletionRequest, CreateChatCompletionRequest, ), ): # When text completion or chat completion for pattern, callback in self.pattern_and_formatters.items(): match = pattern.search(str(error)) if match is not None: return callback(body, match) # Wrap other errors as internal server error return 500, ErrorResponse( message=str(error), type="internal_server_error", param=None, code=None, ) def get_route_handler( self, ) -> Callable[[Request], Coroutine[None, None, Response]]: """Defines custom route handler that catches exceptions and formats in OpenAI style error response""" original_route_handler = super().get_route_handler() async def custom_route_handler(request: Request) -> Response: try: start_sec = time.perf_counter() response = await original_route_handler(request) elapsed_time_ms = int((time.perf_counter() - start_sec) * 1000) response.headers["openai-processing-ms"] = f"{elapsed_time_ms}" return response except HTTPException as unauthorized: # api key check failed raise unauthorized except Exception as exc: json_body = await request.json() try: if "messages" in json_body: # Chat completion body: Optional[ Union[ CreateChatCompletionRequest, CreateCompletionRequest, CreateEmbeddingRequest, ] ] = CreateChatCompletionRequest(**json_body) elif "prompt" in json_body: # Text completion body = CreateCompletionRequest(**json_body) else: # Embedding body = CreateEmbeddingRequest(**json_body) except Exception: # Invalid request body body = None # Get proper error message from the exception ( status_code, error_message, ) = self.error_message_wrapper(error=exc, body=body) return JSONResponse( {"error": error_message}, status_code=status_code, ) return custom_route_handler |
| You are visitor 01402520 — GeezerVison does not store the pages you look up. Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required. |