Move openai api server into a separate file (#429)

python/sglang/srt/managers/tokenizer_manager.py

 import asyncio
 import concurrent.futures
 import dataclasses
+import logging
 import multiprocessing as mp
 import os
 from typing import List
@@ -31,6 +32,8 @@ from sglang.srt.utils import get_exception_traceback, is_multimodal_model, load_
 
 asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
 
+logger = logging.getLogger(__name__)
+
 
 @dataclasses.dataclass
 class ReqState:
@@ -185,10 +188,15 @@ class TokenizerManager:
 
             while True:
                 await event.wait()
-                yield self.convert_logprob_style(state.out_list[-1],
+                out = self.convert_logprob_style(state.out_list[-1],
                                                  obj.return_logprob,
                                                  obj.top_logprobs_num,
                                                  obj.return_text_in_logprobs)
+
+                if self.server_args.log_requests and state.finished:
+                    logger.info(f"in={obj.text}, out={out}")
+
+                yield out
                 state.out_list = []
                 if state.finished:
                     del self.rid_to_state[rid]

python/sglang/srt/openai_api_adapter.py

+"""Conversion between OpenAI APIs and native SRT APIs"""
+import json
+import os
+
+from fastapi import HTTPException, Request
+from fastapi.responses import StreamingResponse
+
+from sglang.srt.conversation import (
+    Conversation,
+    SeparatorStyle,
+    chat_template_exists,
+    generate_chat_conv,
+    register_conv_template,
+)
+from sglang.srt.managers.io_struct import GenerateReqInput
+from sglang.srt.openai_protocol import (
+    ChatCompletionRequest,
+    ChatCompletionResponse,
+    ChatCompletionResponseChoice,
+    ChatCompletionResponseStreamChoice,
+    ChatCompletionStreamResponse,
+    ChatMessage,
+    CompletionRequest,
+    CompletionResponse,
+    CompletionResponseChoice,
+    CompletionResponseStreamChoice,
+    CompletionStreamResponse,
+    DeltaMessage,
+    LogProbs,
+    UsageInfo,
+)
+from sglang.srt.utils import jsonify_pydantic_model
+
+
+chat_template_name = None
+
+def load_chat_template_for_openai_api(chat_template_arg):
+    global chat_template_name
+
+    print(f"Use chat template: {chat_template_arg}")
+    if not chat_template_exists(chat_template_arg):
+        if not os.path.exists(chat_template_arg):
+            raise RuntimeError(
+                f"Chat template {chat_template_arg} is not a built-in template name "
+                "or a valid chat template file path."
+            )
+        with open(chat_template_arg, "r") as filep:
+            template = json.load(filep)
+            try:
+                sep_style = SeparatorStyle[template["sep_style"]]
+            except KeyError:
+                raise ValueError(
+                    f"Unknown separator style: {template['sep_style']}"
+                ) from None
+            register_conv_template(
+                Conversation(
+                    name=template["name"],
+                    system_template=template["system"] + "\n{system_message}",
+                    system_message=template.get("system_message", ""),
+                    roles=(template["user"], template["assistant"]),
+                    sep_style=sep_style,
+                    sep=template.get("sep", "\n"),
+                    stop_str=template["stop_str"],
+                ),
+                override=True,
+            )
+        chat_template_name = template["name"]
+    else:
+        chat_template_name = chat_template_arg
+
+
+async def v1_completions(tokenizer_manager, raw_request: Request):
+    request_json = await raw_request.json()
+    request = CompletionRequest(**request_json)
+
+    # TODO: Validate the request and return HTTPStatus.BAD_REQUEST if invalid.
+    assert request.n == 1
+
+    adapted_request = GenerateReqInput(
+        text=request.prompt,
+        sampling_params={
+            "temperature": request.temperature,
+            "max_new_tokens": request.max_tokens,
+            "stop": request.stop,
+            "top_p": request.top_p,
+            "presence_penalty": request.presence_penalty,
+            "frequency_penalty": request.frequency_penalty,
+            "regex": request.regex,
+        },
+        return_logprob=request.logprobs is not None and request.logprobs > 0,
+        top_logprobs_num=request.logprobs if request.logprobs is not None else 0,
+        return_text_in_logprobs=True,
+        stream=request.stream,
+    )
+    adapted_request.post_init()
+
+    if adapted_request.stream:
+
+        async def generate_stream_resp():
+            stream_buffer = ""
+            n_prev_token = 0
+            async for content in tokenizer_manager.generate_request(adapted_request):
+                text = content["text"]
+                prompt_tokens = content["meta_info"]["prompt_tokens"]
+                completion_tokens = content["meta_info"]["completion_tokens"]
+
+                if not stream_buffer:  # The first chunk
+                    if request.echo:
+                        # Prepend prompt in response text.
+                        text = request.prompt + text
+
+                if request.logprobs:
+                    # The first chunk and echo is enabled.
+                    if not stream_buffer and request.echo:
+                        prefill_token_logprobs = content["meta_info"][
+                            "prefill_token_logprobs"
+                        ]
+                        prefill_top_logprobs = content["meta_info"][
+                            "prefill_top_logprobs"
+                        ]
+                    else:
+                        prefill_token_logprobs = None
+                        prefill_top_logprobs = None
+
+                    logprobs = to_openai_style_logprobs(
+                        prefill_token_logprobs=prefill_token_logprobs,
+                        prefill_top_logprobs=prefill_top_logprobs,
+                        decode_token_logprobs=content["meta_info"][
+                            "decode_token_logprobs"
+                        ][n_prev_token:],
+                        decode_top_logprobs=content["meta_info"]["decode_top_logprobs"][
+                            n_prev_token:
+                        ],
+                    )
+
+                    n_prev_token = len(content["meta_info"]["decode_token_logprobs"])
+                else:
+                    logprobs = None
+
+                delta = text[len(stream_buffer) :]
+                stream_buffer = content["text"]
+                choice_data = CompletionResponseStreamChoice(
+                    index=0,
+                    text=delta,
+                    logprobs=logprobs,
+                    finish_reason=None,
+                )
+                chunk = CompletionStreamResponse(
+                    id=content["meta_info"]["id"],
+                    object="text_completion",
+                    choices=[choice_data],
+                    model=request.model,
+                    usage=UsageInfo(
+                        prompt_tokens=prompt_tokens,
+                        completion_tokens=completion_tokens,
+                        total_tokens=prompt_tokens + completion_tokens,
+                    ),
+                )
+                yield f"data: {jsonify_pydantic_model(chunk)}\n\n"
+            yield "data: [DONE]\n\n"
+
+        return StreamingResponse(generate_stream_resp(), media_type="text/event-stream")
+
+    # Non-streaming response.
+    ret = await tokenizer_manager.generate_request(adapted_request).__anext__()
+    ret = ret[0] if isinstance(ret, list) else ret
+
+    prompt_tokens = ret["meta_info"]["prompt_tokens"]
+    completion_tokens = ret["meta_info"]["completion_tokens"]
+    text = ret["text"]
+    if request.echo:
+        text = request.prompt + text
+
+    if request.logprobs:
+        if request.echo:
+            prefill_token_logprobs = ret["meta_info"]["prefill_token_logprobs"]
+            prefill_top_logprobs = ret["meta_info"]["prefill_top_logprobs"]
+        else:
+            prefill_token_logprobs = None
+            prefill_top_logprobs = None
+
+        logprobs = to_openai_style_logprobs(
+            prefill_token_logprobs=prefill_token_logprobs,
+            prefill_top_logprobs=prefill_top_logprobs,
+            decode_token_logprobs=ret["meta_info"]["decode_token_logprobs"],
+            decode_top_logprobs=ret["meta_info"]["decode_top_logprobs"],
+        )
+    else:
+        logprobs = None
+
+    choice_data = CompletionResponseChoice(
+        index=0,
+        text=text,
+        logprobs=logprobs,
+        finish_reason=None,  # TODO(comaniac): Add finish reason.
+    )
+    response = CompletionResponse(
+        id=ret["meta_info"]["id"],
+        model=request.model,
+        choices=[choice_data],
+        usage=UsageInfo(
+            prompt_tokens=prompt_tokens,
+            completion_tokens=completion_tokens,
+            total_tokens=prompt_tokens + completion_tokens,
+        ),
+    )
+    return response
+
+
+async def v1_chat_completions(tokenizer_manager, raw_request: Request):
+    request_json = await raw_request.json()
+    request = ChatCompletionRequest(**request_json)
+
+    # TODO: Validate the request and return HTTPStatus.BAD_REQUEST if invalid.
+    assert request.n == 1
+
+    # Prep the data needed for the underlying GenerateReqInput:
+    #  - prompt: The full prompt string.
+    #  - stop: Custom stop tokens.
+    #  - image_data: None or a list of image strings (URLs or base64 strings).
+    #    None skips any image processing in GenerateReqInput.
+    if not isinstance(request.messages, str):
+        # Apply chat template and its stop strings.
+        if chat_template_name is None:
+            prompt = tokenizer_manager.tokenizer.apply_chat_template(
+                request.messages, tokenize=False, add_generation_prompt=True
+            )
+            stop = request.stop
+            image_data = None
+        else:
+            conv = generate_chat_conv(request, chat_template_name)
+            prompt = conv.get_prompt()
+            image_data = conv.image_data
+            stop = conv.stop_str or []
+            if request.stop:
+                if isinstance(request.stop, str):
+                    stop.append(request.stop)
+                else:
+                    stop.extend(request.stop)
+    else:
+        # Use the raw prompt and stop strings if the messages is already a string.
+        prompt = request.messages
+        stop = request.stop
+        image_data = None
+
+    adapted_request = GenerateReqInput(
+        text=prompt,
+        image_data=image_data,
+        sampling_params={
+            "temperature": request.temperature,
+            "max_new_tokens": request.max_tokens,
+            "stop": stop,
+            "top_p": request.top_p,
+            "presence_penalty": request.presence_penalty,
+            "frequency_penalty": request.frequency_penalty,
+            "regex": request.regex,
+        },
+        stream=request.stream,
+    )
+    adapted_request.post_init()
+
+    if adapted_request.stream:
+
+        async def generate_stream_resp():
+            is_first = True
+
+            stream_buffer = ""
+            async for content in tokenizer_manager.generate_request(adapted_request):
+                if is_first:
+                    # First chunk with role
+                    is_first = False
+                    choice_data = ChatCompletionResponseStreamChoice(
+                        index=0,
+                        delta=DeltaMessage(role="assistant"),
+                        finish_reason=None,
+                    )
+                    chunk = ChatCompletionStreamResponse(
+                        id=content["meta_info"]["id"],
+                        choices=[choice_data],
+                        model=request.model,
+                    )
+                    yield f"data: {jsonify_pydantic_model(chunk)}\n\n"
+
+                text = content["text"]
+                delta = text[len(stream_buffer) :]
+                stream_buffer = text
+                choice_data = ChatCompletionResponseStreamChoice(
+                    index=0, delta=DeltaMessage(content=delta), finish_reason=None
+                )
+                chunk = ChatCompletionStreamResponse(
+                    id=content["meta_info"]["id"],
+                    choices=[choice_data],
+                    model=request.model,
+                )
+                yield f"data: {jsonify_pydantic_model(chunk)}\n\n"
+            yield "data: [DONE]\n\n"
+
+        return StreamingResponse(generate_stream_resp(), media_type="text/event-stream")
+
+    # Non-streaming response.
+    ret = await tokenizer_manager.generate_request(adapted_request).__anext__()
+    prompt_tokens = ret["meta_info"]["prompt_tokens"]
+    completion_tokens = ret["meta_info"]["completion_tokens"]
+    choice_data = ChatCompletionResponseChoice(
+        index=0,
+        message=ChatMessage(role="assistant", content=ret["text"]),
+        finish_reason=None,  # TODO(comaniac): Add finish reason.
+    )
+    response = ChatCompletionResponse(
+        id=ret["meta_info"]["id"],
+        model=request.model,
+        choices=[choice_data],
+        usage=UsageInfo(
+            prompt_tokens=prompt_tokens,
+            completion_tokens=completion_tokens,
+            total_tokens=prompt_tokens + completion_tokens,
+        ),
+    )
+    return response
+
+
+def to_openai_style_logprobs(
+    prefill_token_logprobs=None,
+    decode_token_logprobs=None,
+    prefill_top_logprobs=None,
+    decode_top_logprobs=None,
+):
+    ret_logprobs = LogProbs()
+
+    def append_token_logprobs(token_logprobs):
+        for logprob, _, token_text in token_logprobs:
+            ret_logprobs.tokens.append(token_text)
+            ret_logprobs.token_logprobs.append(logprob)
+
+            # Not Supported yet
+            ret_logprobs.text_offset.append(-1)
+
+    def append_top_logprobs(top_logprobs):
+        for tokens in top_logprobs:
+            if tokens is not None:
+                ret_logprobs.top_logprobs.append(
+                    {token[2]: token[0] for token in tokens}
+                )
+            else:
+                ret_logprobs.top_logprobs.append(None)
+
+    if prefill_token_logprobs is not None:
+        append_token_logprobs(prefill_token_logprobs)
+    if decode_token_logprobs is not None:
+        append_token_logprobs(decode_token_logprobs)
+    if prefill_top_logprobs is not None:
+        append_top_logprobs(prefill_top_logprobs)
+    if decode_top_logprobs is not None:
+        append_top_logprobs(decode_top_logprobs)
+
+    return ret_logprobs
\ No newline at end of file

python/sglang/srt/openai_protocol.py

@@ -20,21 +20,24 @@ class UsageInfo(BaseModel):
 
 
 class CompletionRequest(BaseModel):
+    # Ordered by official OpenAI API documentation
+    # https://platform.openai.com/docs/api-reference/completions/create
     model: str
-    prompt: Union[str, List[str]]
-    suffix: Optional[str] = None
-    max_tokens: Optional[int] = 16
-    temperature: Optional[float] = 0.7
-    top_p: Optional[float] = 1.0
-    n: Optional[int] = 1
-    stream: Optional[bool] = False
-    logprobs: Optional[int] = None
+    prompt: Union[List[int], List[List[int]], str, List[str]]
+    best_of: Optional[int] = None
     echo: Optional[bool] = False
-    stop: Optional[Union[str, List[str]]] = Field(default_factory=list)
-    presence_penalty: Optional[float] = 0.0
     frequency_penalty: Optional[float] = 0.0
-    best_of: Optional[int] = None
     logit_bias: Optional[Dict[str, float]] = None
+    logprobs: Optional[int] = None
+    max_tokens: Optional[int] = 16
+    n: int = 1
+    presence_penalty: Optional[float] = 0.0
+    seed: Optional[int] = None
+    stop: Optional[Union[str, List[str]]] = Field(default_factory=list)
+    stream: Optional[bool] = False
+    suffix: Optional[str] = None
+    temperature: Optional[float] = 1.0
+    top_p: Optional[float] = 1.0
     user: Optional[str] = None
 
     # Extra parameters for SRT backend only and will be ignored by OpenAI models.
@@ -108,20 +111,30 @@ ChatCompletionMessageParam = Union[
 ]
 
 
+class ResponseFormat(BaseModel):
+    # type must be "json_object" or "text"
+    type: Literal["text", "json_object"]
+
+
 class ChatCompletionRequest(BaseModel):
+    # Ordered by official OpenAI API documentation
+    # https://platform.openai.com/docs/api-reference/chat/create
+    messages: List[ChatCompletionMessageParam]
     model: str
-    messages: Union[str, List[ChatCompletionMessageParam]]
-    temperature: Optional[float] = 0.7
-    top_p: Optional[float] = 1.0
+    frequency_penalty: Optional[float] = 0.0
+    logit_bias: Optional[Dict[str, float]] = None
+    logprobs: Optional[bool] = False
+    top_logprobs: Optional[int] = None
+    max_tokens: Optional[int] = None
     n: Optional[int] = 1
-    max_tokens: Optional[int] = 16
+    presence_penalty: Optional[float] = 0.0
+    response_format: Optional[ResponseFormat] = None
+    seed: Optional[int] = None
     stop: Optional[Union[str, List[str]]] = Field(default_factory=list)
     stream: Optional[bool] = False
-    presence_penalty: Optional[float] = 0.0
-    frequency_penalty: Optional[float] = 0.0
-    logit_bias: Optional[Dict[str, float]] = None
+    temperature: Optional[float] = 0.7
+    top_p: Optional[float] = 1.0
     user: Optional[str] = None
-    best_of: Optional[int] = None
 
     # Extra parameters for SRT backend only and will be ignored by OpenAI models.
     regex: Optional[str] = None
@@ -135,6 +148,7 @@ class ChatMessage(BaseModel):
 class ChatCompletionResponseChoice(BaseModel):
     index: int
     message: ChatMessage
+    logprobs: Optional[LogProbs] = None
     finish_reason: Optional[str] = None
 
 
@@ -155,6 +169,7 @@ class DeltaMessage(BaseModel):
 class ChatCompletionResponseStreamChoice(BaseModel):
     index: int
     delta: DeltaMessage
+    logprobs: Optional[LogProbs] = None
     finish_reason: Optional[str] = None
 
 
@@ -163,4 +178,4 @@ class ChatCompletionStreamResponse(BaseModel):
     object: str = "chat.completion.chunk"
     created: int = Field(default_factory=lambda: int(time.time()))
     model: str
-    choices: List[ChatCompletionResponseStreamChoice]
+    choices: List[ChatCompletionResponseStreamChoice]
\ No newline at end of file

python/sglang/srt/server.py

@@ -3,6 +3,7 @@
 import asyncio
 import dataclasses
 import json
+import logging
 import multiprocessing as mp
 import os
 import sys
@@ -18,45 +19,23 @@ import psutil
 import requests
 import uvicorn
 import uvloop
-from fastapi import FastAPI, HTTPException, Request
+from fastapi import FastAPI, Request
 from fastapi.responses import Response, StreamingResponse
 
 from sglang.backend.runtime_endpoint import RuntimeEndpoint
 from sglang.srt.constrained import disable_cache
-from sglang.srt.conversation import (
-    Conversation,
-    SeparatorStyle,
-    chat_template_exists,
-    generate_chat_conv,
-    register_conv_template,
-)
 from sglang.srt.hf_transformers_utils import get_tokenizer
 from sglang.srt.managers.detokenizer_manager import start_detokenizer_process
-from sglang.srt.managers.io_struct import DetokenizeReqInput, GenerateReqInput
-from sglang.srt.openai_protocol import (
-    ChatCompletionRequest,
-    ChatCompletionResponse,
-    ChatCompletionResponseChoice,
-    ChatCompletionResponseStreamChoice,
-    ChatCompletionStreamResponse,
-    ChatMessage,
-    CompletionRequest,
-    CompletionResponse,
-    CompletionResponseChoice,
-    CompletionResponseStreamChoice,
-    CompletionStreamResponse,
-    DeltaMessage,
-    LogProbs,
-    UsageInfo,
-)
+from sglang.srt.managers.io_struct import GenerateReqInput
 from sglang.srt.managers.router.manager import start_router_process
 from sglang.srt.managers.tokenizer_manager import TokenizerManager
+from sglang.srt.openai_api_adapter import (
+    v1_completions, v1_chat_completions, load_chat_template_for_openai_api)
 from sglang.srt.server_args import PortArgs, ServerArgs
 from sglang.srt.utils import (
     allocate_init_ports,
     assert_pkg_version,
     enable_show_time_cost,
-    jsonify_pydantic_model,
     get_exception_traceback,
     API_KEY_HEADER_NAME,
     APIKeyValidatorMiddleware
@@ -67,7 +46,6 @@ asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
 
 app = FastAPI()
 tokenizer_manager = None
-chat_template_name = None
 
 
 @app.get("/health")
@@ -117,343 +95,23 @@ async def generate_request(obj: GenerateReqInput):
 
 
 @app.post("/v1/completions")
-async def v1_completions(raw_request: Request):
-    request_json = await raw_request.json()
-    request = CompletionRequest(**request_json)
-
-    # TODO: Validate the request and return HTTPStatus.BAD_REQUEST if invalid.
-    assert request.n == 1
-
-    adapted_request = GenerateReqInput(
-        text=request.prompt,
-        sampling_params={
-            "temperature": request.temperature,
-            "max_new_tokens": request.max_tokens,
-            "stop": request.stop,
-            "top_p": request.top_p,
-            "presence_penalty": request.presence_penalty,
-            "frequency_penalty": request.frequency_penalty,
-            "regex": request.regex,
-        },
-        return_logprob=request.logprobs is not None and request.logprobs > 0,
-        top_logprobs_num=request.logprobs if request.logprobs is not None else 0,
-        return_text_in_logprobs=True,
-        stream=request.stream,
-    )
-    adapted_request.post_init()
-
-    if adapted_request.stream:
-
-        async def generate_stream_resp():
-            stream_buffer = ""
-            n_prev_token = 0
-            async for content in tokenizer_manager.generate_request(adapted_request):
-                text = content["text"]
-                prompt_tokens = content["meta_info"]["prompt_tokens"]
-                completion_tokens = content["meta_info"]["completion_tokens"]
-
-                if not stream_buffer:  # The first chunk
-                    if request.echo:
-                        # Prepend prompt in response text.
-                        text = request.prompt + text
-
-                if request.logprobs:
-                    # The first chunk and echo is enabled.
-                    if not stream_buffer and request.echo:
-                        prefill_token_logprobs = content["meta_info"][
-                            "prefill_token_logprobs"
-                        ]
-                        prefill_top_logprobs = content["meta_info"][
-                            "prefill_top_logprobs"
-                        ]
-                    else:
-                        prefill_token_logprobs = None
-                        prefill_top_logprobs = None
-
-                    logprobs = await make_openai_style_logprobs(
-                        prefill_token_logprobs=prefill_token_logprobs,
-                        prefill_top_logprobs=prefill_top_logprobs,
-                        decode_token_logprobs=content["meta_info"][
-                            "decode_token_logprobs"
-                        ][n_prev_token:],
-                        decode_top_logprobs=content["meta_info"]["decode_top_logprobs"][
-                            n_prev_token:
-                        ],
-                    )
-
-                    n_prev_token = len(content["meta_info"]["decode_token_logprobs"])
-                else:
-                    logprobs = None
-
-                delta = text[len(stream_buffer) :]
-                stream_buffer = content["text"]
-                choice_data = CompletionResponseStreamChoice(
-                    index=0,
-                    text=delta,
-                    logprobs=logprobs,
-                    finish_reason=None,
-                )
-                chunk = CompletionStreamResponse(
-                    id=content["meta_info"]["id"],
-                    object="text_completion",
-                    choices=[choice_data],
-                    model=request.model,
-                    usage=UsageInfo(
-                        prompt_tokens=prompt_tokens,
-                        completion_tokens=completion_tokens,
-                        total_tokens=prompt_tokens + completion_tokens,
-                    ),
-                )
-                yield f"data: {jsonify_pydantic_model(chunk)}\n\n"
-            yield "data: [DONE]\n\n"
-
-        return StreamingResponse(generate_stream_resp(), media_type="text/event-stream")
-
-    # Non-streaming response.
-    ret = await generate_request(adapted_request)
-    ret = ret[0] if isinstance(ret, list) else ret
-
-    prompt_tokens = ret["meta_info"]["prompt_tokens"]
-    completion_tokens = ret["meta_info"]["completion_tokens"]
-    text = ret["text"]
-    if request.echo:
-        text = request.prompt + text
-
-    if request.logprobs:
-        if request.echo:
-            prefill_token_logprobs = ret["meta_info"]["prefill_token_logprobs"]
-            prefill_top_logprobs = ret["meta_info"]["prefill_top_logprobs"]
-        else:
-            prefill_token_logprobs = None
-            prefill_top_logprobs = None
-
-        logprobs = await make_openai_style_logprobs(
-            prefill_token_logprobs=prefill_token_logprobs,
-            prefill_top_logprobs=prefill_top_logprobs,
-            decode_token_logprobs=ret["meta_info"]["decode_token_logprobs"],
-            decode_top_logprobs=ret["meta_info"]["decode_top_logprobs"],
-        )
-    else:
-        logprobs = None
-
-    choice_data = CompletionResponseChoice(
-        index=0,
-        text=text,
-        logprobs=logprobs,
-        finish_reason=None,  # TODO(comaniac): Add finish reason.
-    )
-
-    response = CompletionResponse(
-        id=ret["meta_info"]["id"],
-        model=request.model,
-        choices=[choice_data],
-        usage=UsageInfo(
-            prompt_tokens=prompt_tokens,
-            completion_tokens=completion_tokens,
-            total_tokens=prompt_tokens + completion_tokens,
-        ),
-    )
-    return response
+async def openai_v1_completions(raw_request: Request):
+    return await v1_completions(tokenizer_manager, raw_request)
 
 
 @app.post("/v1/chat/completions")
-async def v1_chat_completions(raw_request: Request):
-    request_json = await raw_request.json()
-    request = ChatCompletionRequest(**request_json)
-
-    # TODO: Validate the request and return HTTPStatus.BAD_REQUEST if invalid.
-    assert request.n == 1
-
-    # Prep the data needed for the underlying GenerateReqInput:
-    #  - prompt: The full prompt string.
-    #  - stop: Custom stop tokens.
-    #  - image_data: None or a list of image strings (URLs or base64 strings).
-    #    None skips any image processing in GenerateReqInput.
-    if not isinstance(request.messages, str):
-        # Apply chat template and its stop strings.
-        if chat_template_name is None:
-            # This flow doesn't support the full OpenAI spec.  Verify messages
-            # has the right type before proceeding:
-            for m in request.messages:
-                if not isinstance(m.content, str):
-                    raise HTTPException(
-                        status_code=503,
-                        detail="Structured content requests not supported with "
-                        "HuggingFace Chat Templates. "
-                        "Make sure the server specifies a sglang chat template.",
-                    )
-            prompt = tokenizer_manager.tokenizer.apply_chat_template(
-                request.messages, tokenize=False, add_generation_prompt=True
-            )
-            stop = request.stop
-            image_data = None
-        else:
-            conv = generate_chat_conv(request, chat_template_name)
-            prompt = conv.get_prompt()
-            image_data = conv.image_data
-            stop = conv.stop_str or []
-            if request.stop:
-                if isinstance(request.stop, str):
-                    stop.append(request.stop)
-                else:
-                    stop.extend(request.stop)
-    else:
-        # Use the raw prompt and stop strings if the messages is already a string.
-        prompt = request.messages
-        stop = request.stop
-        image_data = None
-
-    adapted_request = GenerateReqInput(
-        text=prompt,
-        image_data=image_data,
-        sampling_params={
-            "temperature": request.temperature,
-            "max_new_tokens": request.max_tokens,
-            "stop": stop,
-            "top_p": request.top_p,
-            "presence_penalty": request.presence_penalty,
-            "frequency_penalty": request.frequency_penalty,
-            "regex": request.regex,
-        },
-        stream=request.stream,
-    )
-    adapted_request.post_init()
-
-    if adapted_request.stream:
-
-        async def gnerate_stream_resp():
-            is_first = True
-
-            stream_buffer = ""
-            async for content in tokenizer_manager.generate_request(adapted_request):
-                if is_first:
-                    # First chunk with role
-                    is_first = False
-                    choice_data = ChatCompletionResponseStreamChoice(
-                        index=0,
-                        delta=DeltaMessage(role="assistant"),
-                        finish_reason=None,
-                    )
-                    chunk = ChatCompletionStreamResponse(
-                        id=content["meta_info"]["id"],
-                        choices=[choice_data],
-                        model=request.model,
-                    )
-                    yield f"data: {jsonify_pydantic_model(chunk)}\n\n"
-
-                text = content["text"]
-                delta = text[len(stream_buffer) :]
-                stream_buffer = text
-                choice_data = ChatCompletionResponseStreamChoice(
-                    index=0, delta=DeltaMessage(content=delta), finish_reason=None
-                )
-                chunk = ChatCompletionStreamResponse(
-                    id=content["meta_info"]["id"],
-                    choices=[choice_data],
-                    model=request.model,
-                )
-                yield f"data: {jsonify_pydantic_model(chunk)}\n\n"
-            yield "data: [DONE]\n\n"
-
-        return StreamingResponse(gnerate_stream_resp(), media_type="text/event-stream")
-
-    # Non-streaming response.
-    ret = await generate_request(adapted_request)
-    prompt_tokens = ret["meta_info"]["prompt_tokens"]
-    completion_tokens = ret["meta_info"]["completion_tokens"]
-    choice_data = ChatCompletionResponseChoice(
-        index=0,
-        message=ChatMessage(role="assistant", content=ret["text"]),
-        finish_reason=None,  # TODO(comaniac): Add finish reason.
-    )
-    response = ChatCompletionResponse(
-        id=ret["meta_info"]["id"],
-        model=request.model,
-        choices=[choice_data],
-        usage=UsageInfo(
-            prompt_tokens=prompt_tokens,
-            completion_tokens=completion_tokens,
-            total_tokens=prompt_tokens + completion_tokens,
-        ),
-    )
-    return response
-
-
-async def make_openai_style_logprobs(
-    prefill_token_logprobs=None,
-    decode_token_logprobs=None,
-    prefill_top_logprobs=None,
-    decode_top_logprobs=None,
-):
-    ret_logprobs = LogProbs()
-
-    def append_token_logprobs(token_logprobs):
-        for logprob, _, token_text in token_logprobs:
-            ret_logprobs.tokens.append(token_text)
-            ret_logprobs.token_logprobs.append(logprob)
-
-            # Not Supported yet
-            ret_logprobs.text_offset.append(-1)
-
-    def append_top_logprobs(top_logprobs):
-        for tokens in top_logprobs:
-            if tokens is not None:
-                ret_logprobs.top_logprobs.append(
-                    {token[2]: token[0] for token in tokens}
-                )
-            else:
-                ret_logprobs.top_logprobs.append(None)
-
-    if prefill_token_logprobs is not None:
-        append_token_logprobs(prefill_token_logprobs)
-    if decode_token_logprobs is not None:
-        append_token_logprobs(decode_token_logprobs)
-    if prefill_top_logprobs is not None:
-        append_top_logprobs(prefill_top_logprobs)
-    if decode_top_logprobs is not None:
-        append_top_logprobs(decode_top_logprobs)
-
-    return ret_logprobs
-
-
-def load_chat_template_for_openai_api(chat_template_arg):
-    global chat_template_name
-
-    print(f"Use chat template: {chat_template_arg}")
-    if not chat_template_exists(chat_template_arg):
-        if not os.path.exists(chat_template_arg):
-            raise RuntimeError(
-                f"Chat template {chat_template_arg} is not a built-in template name "
-                "or a valid chat template file path."
-            )
-        with open(chat_template_arg, "r") as filep:
-            template = json.load(filep)
-            try:
-                sep_style = SeparatorStyle[template["sep_style"]]
-            except KeyError:
-                raise ValueError(
-                    f"Unknown separator style: {template['sep_style']}"
-                ) from None
-            register_conv_template(
-                Conversation(
-                    name=template["name"],
-                    system_template=template["system"] + "\n{system_message}",
-                    system_message=template.get("system_message", ""),
-                    roles=(template["user"], template["assistant"]),
-                    sep_style=sep_style,
-                    sep=template.get("sep", "\n"),
-                    stop_str=template["stop_str"],
-                ),
-                override=True,
-            )
-        chat_template_name = template["name"]
-    else:
-        chat_template_name = chat_template_arg
+async def openai_v1_chat_completions(raw_request: Request):
+    return await v1_chat_completions(tokenizer_manager, raw_request)
 
 
 def launch_server(server_args: ServerArgs, pipe_finish_writer):
     global tokenizer_manager
 
+    logging.basicConfig(
+        level=getattr(logging, server_args.log_level.upper()),
+        format="%(message)s",
+    )
+
     # Set global environments
     os.environ["TF_CPP_MIN_LOG_LEVEL"] = "3"
     if server_args.show_time_cost:
@@ -656,4 +314,4 @@ class Runtime:
                         pos += len(cur)
 
     def __del__(self):
-        self.shutdown()
+        self.shutdown()
\ No newline at end of file

python/sglang/srt/server_args.py

@@ -34,6 +34,7 @@ class ServerArgs:
 
     # Logging
     log_level: str = "info"
+    log_requests: bool = False
     disable_log_stats: bool = False
     log_stats_interval: int = 10
     show_time_cost: bool = False
@@ -180,6 +181,11 @@ class ServerArgs:
             default=ServerArgs.log_level,
             help="Logging level",
         )
+        parser.add_argument(
+            "--log-requests",
+            action="store_true",
+            help="Log all requests",
+        )
         parser.add_argument(
             "--disable-log-stats",
             action="store_true",