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1306 lines (1168 loc) · 50 KB
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from __future__ import annotations
import os
import json
import ctypes
import dataclasses
from typing import Any, Dict, Iterator, List, Optional, Tuple, Union, Protocol
import llama_cpp.llama as llama
import llama_cpp.llama_types as llama_types
import llama_cpp.llama_grammar as llama_grammar
from ._utils import suppress_stdout_stderr
class LlamaChatCompletionHandler(Protocol):
def __call__(
self,
*,
llama: llama.Llama,
messages: List[llama_types.ChatCompletionRequestMessage],
functions: Optional[List[llama_types.ChatCompletionFunction]] = None,
function_call: Optional[llama_types.ChatCompletionRequestFunctionCall] = None,
tools: Optional[List[llama_types.ChatCompletionTool]] = None,
tool_choice: Optional[llama_types.ChatCompletionToolChoiceOption] = None,
temperature: float = 0.2,
top_p: float = 0.95,
top_k: int = 40,
min_p: float = 0.05,
typical_p: float = 1.0,
stream: bool = False,
stop: Optional[Union[str, List[str]]] = [],
seed: Optional[int] = None,
response_format: Optional[
llama_types.ChatCompletionRequestResponseFormat
] = None,
max_tokens: Optional[int] = None,
presence_penalty: float = 0.0,
frequency_penalty: float = 0.0,
repeat_penalty: float = 1.1,
tfs_z: float = 1.0,
mirostat_mode: int = 0,
mirostat_tau: float = 5.0,
mirostat_eta: float = 0.1,
model: Optional[str] = None,
logits_processor: Optional[llama.LogitsProcessorList] = None,
grammar: Optional[llama.LlamaGrammar] = None,
logit_bias: Optional[Dict[str, float]] = None,
**kwargs, # type: ignore
) -> Union[
llama_types.CreateChatCompletionResponse,
Iterator[llama_types.CreateChatCompletionStreamResponse],
]:
...
CHAT_HANDLERS: Dict[str, LlamaChatCompletionHandler] = {}
def get_chat_completion_handler(name: str) -> LlamaChatCompletionHandler:
return CHAT_HANDLERS[name]
def register_chat_completion_handler(name: str):
def decorator(f: LlamaChatCompletionHandler):
CHAT_HANDLERS[name] = f
return f
return decorator
def _get_system_message(
messages: List[llama_types.ChatCompletionRequestMessage],
) -> str:
"""Get the first system message."""
for message in messages:
if message["role"] == "system":
return message["content"] or ""
return ""
def _map_roles(
messages: List[llama_types.ChatCompletionRequestMessage], role_map: Dict[str, str]
) -> List[Tuple[str, Optional[str]]]:
"""Map the message roles."""
output: List[Tuple[str, Optional[str]]] = []
for message in messages:
role = message["role"]
if role in role_map:
output.append((role_map[role], message["content"]))
return output
def _format_llama2(
system_message: str, messages: List[Tuple[str, Optional[str]]], sep: str, sep2: str
) -> str:
"""Format the prompt with the llama2 style."""
seps = [sep, sep2]
ret = system_message + sep
for i, (role, message) in enumerate(messages):
if system_message and i == 0:
ret += message + seps[i % 2]
elif message:
ret += role + message + " " + seps[i % 2]
else:
ret += role + " "
return ret
def _format_add_colon_single(
system_message: str, messages: List[Tuple[str, Optional[str]]], sep: str
) -> str:
"""Format the prompt with the add-colon-single style."""
ret = system_message + sep
for role, message in messages:
if message:
ret += role + ": " + message + sep
else:
ret += role + ":"
return ret
def _format_add_colon_two(
system_message: str, messages: List[Tuple[str, Optional[str]]], sep: str, sep2: str
) -> str:
"""Format the prompt with the add-colon-two style."""
seps = [sep, sep2]
ret = system_message + seps[0]
for i, (role, message) in enumerate(messages):
if message:
ret += role + ": " + message + seps[i % 2]
else:
ret += role + ":"
return ret
def _format_no_colon_single(
system_message: str, messages: List[Tuple[str, Optional[str]]], sep: str
) -> str:
"""Format the prompt with the no-colon-single style."""
ret = system_message
for role, message in messages:
if message:
ret += role + message + sep
else:
ret += role
return ret
def _format_add_colon_space_single(
system_message: str, messages: List[Tuple[str, Optional[str]]], sep: str
) -> str:
"""Format the prompt with the add-colon-space-single style."""
ret = system_message + sep
for role, message in messages:
if message:
ret += role + ": " + message + sep
else:
ret += role + ": " # must be end with a space
return ret
def _format_chatml(
system_message: str, messages: List[Tuple[str, Optional[str]]], sep: str
) -> str:
"""Format the prompt with the chatml style."""
ret = "" if system_message == "" else system_message + sep + "\n"
for role, message in messages:
if message:
ret += role + "\n" + message + sep + "\n"
else:
ret += role + "\n"
return ret
def _format_chatglm3(
system_message: str, messages: List[Tuple[str, Optional[str]]], sep: str
) -> str:
"""Format the prompt with the chatglm3 style."""
ret = ""
if system_message:
ret += system_message
for role, message in messages:
if message:
ret += role + "\n" + " " + message
else:
ret += role
return ret
@dataclasses.dataclass
class ChatFormatterResponse:
prompt: str
stop: Optional[Union[str, List[str]]] = None
class ChatFormatter(Protocol):
def __call__(
self,
*,
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
...
class BasicChatHandler:
def __init__(self, chat_format: str):
self.chat_format = chat_format
def _convert_text_completion_to_chat(
completion: llama_types.Completion,
) -> llama_types.ChatCompletion:
return {
"id": "chat" + completion["id"],
"object": "chat.completion",
"created": completion["created"],
"model": completion["model"],
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": completion["choices"][0]["text"],
},
"finish_reason": completion["choices"][0]["finish_reason"],
}
],
"usage": completion["usage"],
}
def _convert_text_completion_chunks_to_chat(
chunks: Iterator[llama_types.CreateCompletionStreamResponse],
) -> Iterator[llama_types.ChatCompletionChunk]:
for i, chunk in enumerate(chunks):
if i == 0:
yield {
"id": "chat" + chunk["id"],
"model": chunk["model"],
"created": chunk["created"],
"object": "chat.completion.chunk",
"choices": [
{
"index": 0,
"delta": {
"role": "assistant",
},
"finish_reason": None,
}
],
}
yield {
"id": "chat" + chunk["id"],
"model": chunk["model"],
"created": chunk["created"],
"object": "chat.completion.chunk",
"choices": [
{
"index": 0,
"delta": {
"content": chunk["choices"][0]["text"],
},
"finish_reason": None,
}
],
}
if chunk["choices"][0]["finish_reason"] is not None:
yield {
"id": "chat" + chunk["id"],
"model": chunk["model"],
"created": chunk["created"],
"object": "chat.completion.chunk",
"choices": [
{
"index": 0,
"delta": {},
"finish_reason": chunk["choices"][0]["finish_reason"],
}
],
}
def _convert_completion_to_chat(
completion_or_chunks: Union[
llama_types.CreateCompletionResponse,
Iterator[llama_types.CreateCompletionStreamResponse],
],
stream: bool = False,
) -> Union[
llama_types.CreateChatCompletionResponse, Iterator[llama_types.ChatCompletionChunk]
]:
if stream:
chunks: Iterator[llama_types.CreateCompletionStreamResponse] = completion_or_chunks # type: ignore
return _convert_text_completion_chunks_to_chat(chunks)
else:
completion: llama_types.Completion = completion_or_chunks # type: ignore
return _convert_text_completion_to_chat(completion)
_CHAT_FORMATS: Dict[str, ChatFormatter] = {}
def register_chat_format(name: str):
def decorator(f: ChatFormatter):
def basic_create_chat_completion(
*,
llama: llama.Llama,
messages: List[llama_types.ChatCompletionRequestMessage],
functions: Optional[List[llama_types.ChatCompletionFunction]] = None,
function_call: Optional[
llama_types.ChatCompletionRequestFunctionCall
] = None,
tools: Optional[List[llama_types.ChatCompletionTool]] = None,
tool_choice: Optional[llama_types.ChatCompletionToolChoiceOption] = None,
temperature: float = 0.2,
top_p: float = 0.95,
top_k: int = 40,
min_p: float = 0.05,
typical_p: float = 1.0,
stream: bool = False,
stop: Optional[Union[str, List[str]]] = [],
seed: Optional[int] = None,
response_format: Optional[
llama_types.ChatCompletionRequestResponseFormat
] = None,
max_tokens: Optional[int] = None,
presence_penalty: float = 0.0,
frequency_penalty: float = 0.0,
repeat_penalty: float = 1.1,
tfs_z: float = 1.0,
mirostat_mode: int = 0,
mirostat_tau: float = 5.0,
mirostat_eta: float = 0.1,
model: Optional[str] = None,
logits_processor: Optional[llama.LogitsProcessorList] = None,
grammar: Optional[llama.LlamaGrammar] = None,
logit_bias: Optional[Dict[str, float]] = None,
**kwargs, # type: ignore
) -> Union[
llama_types.CreateChatCompletionResponse,
Iterator[llama_types.CreateChatCompletionStreamResponse],
]:
result = f(
messages=messages,
functions=functions,
function_call=function_call,
)
prompt = result.prompt
if result.stop is not None:
stop = [] if stop is None else [stop] if isinstance(stop, str) else stop
rstop = result.stop if isinstance(result.stop, list) else [result.stop]
stop = stop + rstop
if response_format is not None and response_format["type"] == "json_object":
grammar = llama_grammar.LlamaGrammar.from_string(
llama_grammar.JSON_GBNF
)
completion_or_chunks = llama.create_completion(
prompt=prompt,
temperature=temperature,
top_p=top_p,
top_k=top_k,
min_p=min_p,
typical_p=typical_p,
stream=stream,
stop=stop,
seed=seed,
max_tokens=max_tokens,
presence_penalty=presence_penalty,
frequency_penalty=frequency_penalty,
repeat_penalty=repeat_penalty,
tfs_z=tfs_z,
mirostat_mode=mirostat_mode,
mirostat_tau=mirostat_tau,
mirostat_eta=mirostat_eta,
model=model,
logits_processor=logits_processor,
grammar=grammar,
logit_bias=logit_bias,
)
return _convert_completion_to_chat(completion_or_chunks, stream=stream)
register_chat_completion_handler(name)(basic_create_chat_completion)
return f
return decorator
def get_chat_format(name: str):
try:
return _CHAT_FORMATS[name]
except KeyError:
raise ValueError(
f"Invalid chat format: {name} (valid formats: {list(_CHAT_FORMATS.keys())})"
)
def hf_autotokenizer_to_chat_formatter(
pretrained_model_name_or_path: Union[str, os.PathLike[str]]
) -> ChatFormatter:
# https://huggingface.co/docs/transformers/main/chat_templating
# https://huggingface.co/mistralai/Mistral-7B-Instruct-v0.1#instruction-format
# https://huggingface.co/mistralai/Mistral-7B-Instruct-v0.1/blob/main/tokenizer_config.json
from transformers import AutoTokenizer
tokenizer = AutoTokenizer.from_pretrained(pretrained_model_name_or_path)
def format_autotokenizer(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
tokenizer.use_default_system_prompt = False
_prompt = tokenizer.apply_chat_template(messages, tokenize=False)
# Return formatted prompt and eos token by default
return ChatFormatterResponse(prompt=_prompt, stop=tokenizer.eos_token)
return format_autotokenizer
# see https://github.com/huggingface/transformers/blob/main/src/transformers/models/llama/tokenization_llama.py
# system prompt is "embedded" in the first message
@register_chat_format("llama-2")
def format_llama2(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_system_template = "<s>[INST] <<SYS>>\n{system_message}\n<</SYS>>"
_roles = dict(user="<s>[INST]", assistant="[/INST]")
_messages = _map_roles(messages, _roles)
system_message = _get_system_message(messages)
if system_message:
system_message = _system_template.format(system_message=system_message)
_prompt = _format_llama2(system_message, _messages, " ", "</s>") + "[/INST]"
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("alpaca")
def format_alpaca(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_roles = dict(user="### Instruction", assistant="### Response")
_sep = "\n\n"
_sep2 = "</s>"
system_message = _get_system_message(messages)
_messages = _map_roles(messages, _roles)
_prompt = _format_add_colon_two(system_message, _messages, _sep, _sep2)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("qwen")
def format_qwen(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_roles = dict(user="<|im_start|>user", assistant="<|im_start|>assistant")
system_message="You are a helpful assistant."
system_template="<|im_start|>system\n{system_message}"
system_message=system_template.format(system_message=system_message)
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_sep = "<|im_end|>"
_prompt = _format_chatml(system_message, _messages, _sep)
_sep2 = "<|endoftext|>"
return ChatFormatterResponse(prompt=_prompt,stop=_sep2)
@register_chat_format("vicuna")
def format(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_system_message = "A chat between a curious user and an artificial intelligence assistant. The assistant gives helpful, detailed, and polite answers to the user's questions."
_roles = dict(user="USER", assistant="ASSISTANT")
_sep = " "
_sep2 = "</s>"
system_message = _system_message
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_add_colon_two(system_message, _messages, _sep, _sep2)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("oasst_llama")
def format_oasst_llama(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_system_template = "[INST] <<SYS>>\n{system_message}\n<</SYS>>\n\n"
_roles = dict(user="<|prompter|>", assistant="<|assistant|>")
_sep = "</s>"
system_message = _get_system_message(messages)
system_message = _system_template.format(system_message=system_message)
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_no_colon_single(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("baichuan-2")
def format_baichuan2(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_system_template = "{system_message}"
_roles = dict(user="<reserved_106>", assistant="<reserved_107>")
_sep = ""
system_message = _get_system_message(messages)
system_message = _system_template.format(system_message=system_message)
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_no_colon_single(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("baichuan")
def format_baichuan(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_system_template = "{system_message}"
_roles = dict(user="<reserved_102>", assistant="<reserved_103>")
_sep = ""
system_message = _get_system_message(messages)
system_message = _system_template.format(system_message=system_message)
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_no_colon_single(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("openbuddy")
def format_openbuddy(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_system_message = """Consider a conversation between User (a human) and Assistant (named Buddy).
Buddy is an INTP-T, a friendly, intelligent and multilingual AI assistant, by OpenBuddy team. GitHub: https://github.com/OpenBuddy/OpenBuddy
Buddy cannot access the Internet.
Buddy can fluently speak the user's language (e.g. English, Chinese).
Buddy can generate poems, stories, code, essays, songs, parodies, and more.
Buddy possesses vast knowledge about the world, history, and culture.
Buddy's responses are always safe, creative, high-quality, human-like, and interesting.
Buddy strictly refuses to discuss political, NSFW, or other unsafe topics.
User: Hi.
Assistant: Hi, I'm Buddy, your AI assistant. How can I help you today?"""
_roles = dict(user="User", assistant="Assistant")
_sep = "\n"
system_message = _system_message
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_add_colon_single(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("redpajama-incite")
def format_redpajama_incite(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_system_message = _get_system_message(messages)
_roles = dict(user="<human>", assistant="<bot>")
_sep = "\n"
_stop = "<human>"
system_message = _system_message
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_add_colon_single(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt, stop=_stop)
@register_chat_format("snoozy")
def format_snoozy(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
system_template = "### Instruction:\n{system_message}"
default_system_message = "The prompt below is a question to answer, a task to complete, or a conversation to respond to; decide which and write an appropriate response."
_system_message = _get_system_message(messages)
_system_message = (
_system_message if _system_message != "" else default_system_message
)
system_message = system_template.format(system_message=_system_message)
_roles = dict(user="### Prompt", assistant="### Response")
_sep = "\n"
_stop = "###"
system_message = _system_message
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_add_colon_single(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt, stop=_stop)
@register_chat_format("phind")
def format_phind(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_roles = dict(user="### User Message", assistant="### Assistant")
_sep = "\n\n"
_system_message = "### System Prompt\nYou are an intelligent programming assistant."
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_add_colon_single(_system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("intel")
def format_intel(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_roles = dict(user="### User:", assistant="### Assistant:")
_sep = "\n"
_system_message = "### System:\n{system_message}"
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_add_colon_single(_system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("open-orca")
def format_open_orca(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
system_template = "{system_message}"
system_message = (
"You are a helpful assistant. Please answer truthfully and write out your "
"thinking step by step to be sure you get the right answer. If you make a mistake or encounter "
"an error in your thinking, say so out loud and attempt to correct it. If you don't know or "
"aren't sure about something, say so clearly. You will act as a professional logician, mathematician, "
"and physicist. You will also act as the most appropriate type of expert to answer any particular "
"question or solve the relevant problem; state which expert type your are, if so. Also think of "
"any particular named expert that would be ideal to answer the relevant question or solve the "
"relevant problem; name and act as them, if appropriate."
)
roles = ("User", "Assistant")
sep = "<|end_of_turn|>\n"
# stop_token_ids=[32000, 32001], # "<|end_of_turn|>"
stop_str = "User"
system_message = system_template.format(system_message=system_message)
_messages = _map_roles(messages, dict(zip(roles, roles)))
_messages.append((roles[1], None))
_prompt = _format_add_colon_space_single(system_message, _messages, sep)
return ChatFormatterResponse(prompt=_prompt, stop=stop_str)
@register_chat_format("mistrallite")
def format_mistrallite(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
_roles = dict(user="<|prompter|>", assistant="</s>\n<|assistant|>")
_sep = " "
system_template = """<|system|>{system_message}</s>"""
system_message = _get_system_message(messages)
system_message = system_template.format(system_message=system_message)
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_no_colon_single(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt)
@register_chat_format("zephyr")
def format_zephyr(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
system_template = """<|system|>
{system_message}"""
system_message = _get_system_message(messages)
system_message = system_template.format(system_message=system_message)
_roles = dict(user="<|user|>\n", assistant="<|assistant|>\n")
_sep = "</s>"
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_chatml(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt, stop=_sep)
@register_chat_format("pygmalion")
def format_pygmalion(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
system_template = """<|system|>{system_message}"""
system_message = _get_system_message(messages)
system_message = system_template.format(system_message=system_message)
_roles = dict(user="<|user|>", assistant="<|model|>")
_sep = "\n"
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_chatml(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt, stop=_sep)
@register_chat_format("chatml")
def format_chatml(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
system_template = """<|im_start|>system
{system_message}"""
system_message = _get_system_message(messages)
system_message = system_template.format(system_message=system_message)
_roles = dict(user="<|im_start|>user", assistant="<|im_start|>assistant")
_sep = "<|im_end|>"
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_chatml(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt, stop=_sep)
@register_chat_format("chatglm3")
def format_chatglm3(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
system_template = """<|system|>
{system_message}"""
system_message = _get_system_message(messages)
system_message = system_template.format(system_message=system_message)
_roles = dict(user="<|user|>", assistant="<|assistant|>")
_sep = "</s>"
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_chatglm3(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt, stop=_sep)
@register_chat_format("openchat")
def format_openchat(
messages: List[llama_types.ChatCompletionRequestMessage],
**kwargs: Any,
) -> ChatFormatterResponse:
system_template = "{system_message}<|end_of_turn|>"
system_message = _get_system_message(messages)
system_message = system_template.format(system_message=system_message)
_roles = dict(
user="GPT4 Correct User: ", assistant="<|end_of_turn|>GPT4 Correct Assistant: "
)
_sep = "<|end_of_turn|>"
_messages = _map_roles(messages, _roles)
_messages.append((_roles["assistant"], None))
_prompt = _format_chatml(system_message, _messages, _sep)
return ChatFormatterResponse(prompt=_prompt, stop=_sep)
# Chat format for Saiga models, see more details and available models:
# https://huggingface.co/collections/IlyaGusev/saiga2-saigamistral-6505d4ccc3d1e53166b636cd
@register_chat_format("saiga")
def format_saiga(
messages: list[llama_types.ChatCompletionRequestMessage],
**kwargs,
) -> ChatFormatterResponse:
_message_template = "<s>{role}\n{content}</s>"
_roles = dict(user="user", bot="bot", system="system")
_messages = _map_roles(messages, _roles)
_prompt = ""
for role, content in _messages:
if content:
_prompt += _message_template.format(role=role, content=content)
else:
_prompt += f"<s>{role}\n"
# Response template
_prompt += "<s>bot"
return ChatFormatterResponse(prompt=_prompt.strip())
@register_chat_completion_handler("functionary")
def functionary_chat_handler(
llama: llama.Llama,
messages: List[llama_types.ChatCompletionRequestMessage],
functions: Optional[List[llama_types.ChatCompletionFunction]] = None,
function_call: Optional[llama_types.ChatCompletionRequestFunctionCall] = None,
tools: Optional[List[llama_types.ChatCompletionTool]] = None,
tool_choice: Optional[llama_types.ChatCompletionToolChoiceOption] = None,
temperature: float = 0.2,
top_p: float = 0.95,
top_k: int = 40,
min_p: float = 0.05,
typical_p: float = 1.0,
stream: bool = False,
stop: Optional[Union[str, List[str]]] = [],
response_format: Optional[llama_types.ChatCompletionRequestResponseFormat] = None,
max_tokens: Optional[int] = None,
presence_penalty: float = 0.0,
frequency_penalty: float = 0.0,
repeat_penalty: float = 1.1,
tfs_z: float = 1.0,
mirostat_mode: int = 0,
mirostat_tau: float = 5.0,
mirostat_eta: float = 0.1,
model: Optional[str] = None,
logits_processor: Optional[llama.LogitsProcessorList] = None,
grammar: Optional[llama.LlamaGrammar] = None,
**kwargs, # type: ignore
) -> Union[llama_types.ChatCompletion, Iterator[llama_types.ChatCompletionChunk]]:
SYSTEM_MESSAGE = """A chat between a curious user and an artificial intelligence assistant. The assistant gives helpful, detailed, and polite answers to the user's questions. The assistant calls functions with appropriate input when necessary"""
def generate_type_definition(
param: Dict[str, llama_types.JsonType], indent_level: int, shared_defs
) -> str:
indent = " " * indent_level
if "$ref" in param:
# Reference to a shared definition
ref_name = param["$ref"].split("/")[
-1
] # Extract the type name from the reference
return ref_name
elif param.get("type") == "array":
items = param.get("items", {})
item_type = generate_type_definition(items, indent_level + 1, shared_defs)
return f"Array<{item_type}>"
elif param.get("type") == "object":
properties = param.get("properties", {})
nested_schema = "{\n"
for nested_param_name, nested_param in properties.items():
nested_param_type = generate_type_definition(
nested_param, indent_level + 1, shared_defs
)
nested_schema += (
f"{indent} {nested_param_name}: {nested_param_type},\n"
)
nested_schema += indent + "}"
return nested_schema
elif "enum" in param:
# Enum type
return " | ".join([f'"{enum_value}"' for enum_value in param["enum"]])
else:
# Simple type
return param.get("type", "any")
def generate_shared_definitions(shared_defs, indent_level: int) -> str:
indent = " " * indent_level
shared_definitions = ""
for def_name, def_properties in shared_defs.items():
shared_definitions += f"{indent}type {def_name} = "
if def_properties.get("type") == "object":
shared_definitions += generate_type_definition(
def_properties, indent_level, shared_defs
)
elif "enum" in def_properties:
# Enum type
shared_definitions += " | ".join(
[f'"{enum_value}"' for enum_value in def_properties["enum"]]
)
shared_definitions += ";\n"
return shared_definitions
def generate_schema_from_functions(functions, namespace="functions") -> str:
schema = (
"// Supported function definitions that should be called when necessary.\n"
)
schema += f"namespace {namespace} {{\n\n"
# Generate shared definitions
shared_definitions = {}
for function in functions:
parameters = function.get("parameters", {})
shared_definitions.update(parameters.get("$defs", {}))
schema += generate_shared_definitions(shared_definitions, 1)
for function in functions:
function_name = function["name"]
description = function.get("description", "")
parameters = function.get("parameters", {})
required_params = parameters.get("required", [])
schema += f" // {description}\n"
schema += f" type {function_name} = (_: {{\n"
for param_name, param in parameters.get("properties", {}).items():
param_description = param.get("description", "")
param_type = generate_type_definition(param, 2, shared_definitions)
optional_indicator = "" if param_name in required_params else "?"
schema += f" // {param_description}\n"
schema += f" {param_name}{optional_indicator}: {param_type},\n"
schema += " }) => any;\n\n"
schema += "}} // namespace {}\n".format(namespace)
return schema
def prepare_messages_for_inference(
messages: List[llama_types.ChatCompletionRequestMessage],
functions: Optional[List[llama_types.ChatCompletionFunctions]] = None,
tools: Optional[List[llama_types.ChatCompletionTool]] = None,
):
all_messages: List[llama_types.ChatCompletionRequestMessage] = []
if functions is not None:
all_messages.append(
llama_types.ChatCompletionRequestSystemMessage(
role="system", content=generate_schema_from_functions(functions)
)
)
if tools is not None:
all_messages.append(
llama_types.ChatCompletionRequestSystemMessage(
role="system",
content=generate_schema_from_functions(
[
tool["function"]
for tool in tools
if tool["type"] == "function"
]
),
)
)
all_messages.append(
llama_types.ChatCompletionRequestSystemMessage(
role="system", content=SYSTEM_MESSAGE
)
)
for message in messages:
# Function call responses
if message["role"] == "function" and "name" in message:
message["name"] = f"functions.{message['name']}"
# Function call requests by assistant
if "function_call" in message:
message["function_call"][
"name"
] = f"functions.{message['function_call']['name']}"
all_messages.append(message)
all_messages.append(
llama_types.ChatCompletionRequestAssistantMessage(
role="assistant", content=None
)
)
def message_to_str(msg: llama_types.ChatCompletionRequestMessage):
if msg["role"] == "system":
return f"system:\n{msg['content']}\n"
elif msg["role"] == "function" and "name" in msg:
return f"function name={msg['name']}:\n{msg['content']}\n"
elif msg["role"] == "function" and "function_call" in msg:
return f"function name={msg['function_call']['name']}:\n{msg['function_call']['arguments']}\n"
elif msg["role"] == "tool":
if msg["content"] is not None:
return f"function name={msg['tool_call_id']}:\n{msg['content']}\n"
else:
return f"function name={msg['tool_call_id']}\n"
elif msg["role"] == "user":
if msg["content"] is None:
return "user:\n</s></s>\n"
else:
return f"user:\n</s>{msg['content']}</s>\n"
elif msg["role"] == "assistant":
if msg["content"] is not None and "function_call" in msg:
return f"assistant:\n{msg['content']}\nassistant to={msg['function_call']['name']}:\n{msg['function_call']['arguments']}</s>\n"
elif "function_call" in msg:
return f"assistant to={msg['function_call']['name']}:\n{msg['function_call']['arguments']}</s>\n"
elif "tool_calls" in msg and len(msg["tool_calls"]) > 0:
for tool_call in msg[
"tool_calls"
]: # NOTE: probably doesn't work with the functionary model
return f"assistant to={tool_call['id']}:\n{tool_call['function']['arguments']}</s>\n"
elif msg["content"] is None:
return "assistant"
else:
return f"assistant:\n{msg['content']}\n"
else:
raise ValueError(f"Unsupported role: {msg['role']}")
return "".join([message_to_str(msg) for msg in all_messages])
if tools is not None:
functions = [tool["function"] for tool in tools if tool["type"] == "function"]
if tool_choice is not None:
function_call = (
tool_choice if isinstance(tool_choice, str) else tool_choice["function"]
)
prompt = prepare_messages_for_inference(messages, functions, tools)
if function_call is None and (functions is None or len(functions) == 0):
completion_or_completion_chunks = llama.create_completion(
prompt=prompt + ":\n",
temperature=temperature,
top_p=top_p,
top_k=top_k,
min_p=min_p,
typical_p=typical_p,
stream=stream,
stop=["user:", "</s>"],
max_tokens=max_tokens,
presence_penalty=presence_penalty,
frequency_penalty=frequency_penalty,
repeat_penalty=repeat_penalty,
tfs_z=tfs_z,
mirostat_mode=mirostat_mode,
mirostat_tau=mirostat_tau,
mirostat_eta=mirostat_eta,