mirror of
https://github.com/imartinez/privateGPT.git
synced 2025-04-28 03:32:18 +00:00
* Extract optional dependencies * Separate local mode into llms-llama-cpp and embeddings-huggingface for clarity * Support Ollama embeddings * Upgrade to llamaindex 0.10.14. Remove legacy use of ServiceContext in ContextChatEngine * Fix vector retriever filters
116 lines
4.7 KiB
Python
116 lines
4.7 KiB
Python
import logging
|
|
|
|
from injector import inject, singleton
|
|
from llama_index.core.llms import LLM, MockLLM
|
|
from llama_index.core.settings import Settings as LlamaIndexSettings
|
|
from llama_index.core.utils import set_global_tokenizer
|
|
from transformers import AutoTokenizer # type: ignore
|
|
|
|
from private_gpt.components.llm.prompt_helper import get_prompt_style
|
|
from private_gpt.paths import models_cache_path, models_path
|
|
from private_gpt.settings.settings import Settings
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
@singleton
|
|
class LLMComponent:
|
|
llm: LLM
|
|
|
|
@inject
|
|
def __init__(self, settings: Settings) -> None:
|
|
llm_mode = settings.llm.mode
|
|
if settings.llm.tokenizer:
|
|
set_global_tokenizer(
|
|
AutoTokenizer.from_pretrained(
|
|
pretrained_model_name_or_path=settings.llm.tokenizer,
|
|
cache_dir=str(models_cache_path),
|
|
)
|
|
)
|
|
|
|
logger.info("Initializing the LLM in mode=%s", llm_mode)
|
|
match settings.llm.mode:
|
|
case "llamacpp":
|
|
try:
|
|
from llama_index.llms.llama_cpp import LlamaCPP # type: ignore
|
|
except ImportError as e:
|
|
raise ImportError(
|
|
"Local dependencies not found, install with `poetry install --extras llms-llama-cpp`"
|
|
) from e
|
|
|
|
prompt_style = get_prompt_style(settings.llamacpp.prompt_style)
|
|
|
|
self.llm = LlamaCPP(
|
|
model_path=str(models_path / settings.llamacpp.llm_hf_model_file),
|
|
temperature=0.1,
|
|
max_new_tokens=settings.llm.max_new_tokens,
|
|
context_window=settings.llm.context_window,
|
|
generate_kwargs={},
|
|
callback_manager=LlamaIndexSettings.callback_manager,
|
|
# All to GPU
|
|
model_kwargs={"n_gpu_layers": -1, "offload_kqv": True},
|
|
# transform inputs into Llama2 format
|
|
messages_to_prompt=prompt_style.messages_to_prompt,
|
|
completion_to_prompt=prompt_style.completion_to_prompt,
|
|
verbose=True,
|
|
)
|
|
|
|
case "sagemaker":
|
|
try:
|
|
from private_gpt.components.llm.custom.sagemaker import SagemakerLLM
|
|
except ImportError as e:
|
|
raise ImportError(
|
|
"Sagemaker dependencies not found, install with `poetry install --extras llms-sagemaker`"
|
|
) from e
|
|
|
|
self.llm = SagemakerLLM(
|
|
endpoint_name=settings.sagemaker.llm_endpoint_name,
|
|
max_new_tokens=settings.llm.max_new_tokens,
|
|
context_window=settings.llm.context_window,
|
|
)
|
|
case "openai":
|
|
try:
|
|
from llama_index.llms.openai import OpenAI # type: ignore
|
|
except ImportError as e:
|
|
raise ImportError(
|
|
"OpenAI dependencies not found, install with `poetry install --extras llms-openai`"
|
|
) from e
|
|
|
|
openai_settings = settings.openai
|
|
self.llm = OpenAI(
|
|
api_base=openai_settings.api_base,
|
|
api_key=openai_settings.api_key,
|
|
model=openai_settings.model,
|
|
)
|
|
case "openailike":
|
|
try:
|
|
from llama_index.llms.openai_like import OpenAILike # type: ignore
|
|
except ImportError as e:
|
|
raise ImportError(
|
|
"OpenAILike dependencies not found, install with `poetry install --extras llms-openai-like`"
|
|
) from e
|
|
|
|
openai_settings = settings.openai
|
|
self.llm = OpenAILike(
|
|
api_base=openai_settings.api_base,
|
|
api_key=openai_settings.api_key,
|
|
model=openai_settings.model,
|
|
is_chat_model=True,
|
|
max_tokens=None,
|
|
api_version="",
|
|
)
|
|
case "ollama":
|
|
try:
|
|
from llama_index.llms.ollama import Ollama # type: ignore
|
|
except ImportError as e:
|
|
raise ImportError(
|
|
"Ollama dependencies not found, install with `poetry install --extras llms-ollama`"
|
|
) from e
|
|
|
|
ollama_settings = settings.ollama
|
|
self.llm = Ollama(
|
|
model=ollama_settings.llm_model, base_url=ollama_settings.api_base
|
|
)
|
|
case "mock":
|
|
self.llm = MockLLM()
|