quivr/backend/models/files.py
Stan Girard 08e015af6c
feat(lcel): migrated to lcel and pydantic (#2185)
# Description

Please include a summary of the changes and the related issue. Please
also include relevant motivation and context.

## Checklist before requesting a review

Please delete options that are not relevant.

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged

## Screenshots (if appropriate):

---------

Co-authored-by: Antoine Dewez <44063631+Zewed@users.noreply.github.com>
2024-02-14 14:01:35 -08:00

144 lines
4.6 KiB
Python

import os
import tempfile
from typing import Any, Optional
from uuid import UUID
from fastapi import UploadFile
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain_core.documents import Document
from logger import get_logger
from models.databases.supabase.supabase import SupabaseDB
from models.settings import get_supabase_db
from modules.brain.service.brain_vector_service import BrainVectorService
from packages.files.file import compute_sha1_from_file
from pydantic import BaseModel
logger = get_logger(__name__)
class File(BaseModel):
id: Optional[UUID] = None
file: Optional[UploadFile] = None
file_name: Optional[str] = ""
file_size: Optional[int] = None
file_sha1: Optional[str] = ""
vectors_ids: Optional[list] = []
file_extension: Optional[str] = ""
content: Optional[Any] = None
chunk_size: int = 500
chunk_overlap: int = 0
documents: Optional[Document] = None
@property
def supabase_db(self) -> SupabaseDB:
return get_supabase_db()
def __init__(self, **kwargs):
super().__init__(**kwargs)
if self.file:
self.file_name = self.file.filename
self.file_size = self.file.size # pyright: ignore reportPrivateUsage=none
self.file_extension = os.path.splitext(
self.file.filename # pyright: ignore reportPrivateUsage=none
)[-1].lower()
async def compute_file_sha1(self):
"""
Compute the sha1 of the file using a temporary file
"""
with tempfile.NamedTemporaryFile(
delete=False,
suffix=self.file.filename, # pyright: ignore reportPrivateUsage=none
) as tmp_file:
await self.file.seek(0) # pyright: ignore reportPrivateUsage=none
self.content = (
await self.file.read() # pyright: ignore reportPrivateUsage=none
)
tmp_file.write(self.content)
tmp_file.flush()
self.file_sha1 = compute_sha1_from_file(tmp_file.name)
os.remove(tmp_file.name)
def compute_documents(self, loader_class):
"""
Compute the documents from the file
Args:
loader_class (class): The class of the loader to use to load the file
"""
logger.info(f"Computing documents from file {self.file_name}")
documents = []
with tempfile.NamedTemporaryFile(
delete=False,
suffix=self.file.filename, # pyright: ignore reportPrivateUsage=none
) as tmp_file:
tmp_file.write(self.content) # pyright: ignore reportPrivateUsage=none
tmp_file.flush()
loader = loader_class(tmp_file.name)
documents = loader.load()
os.remove(tmp_file.name)
text_splitter = RecursiveCharacterTextSplitter.from_tiktoken_encoder(
chunk_size=self.chunk_size, chunk_overlap=self.chunk_overlap
)
self.documents = text_splitter.split_documents(documents)
def set_file_vectors_ids(self):
"""
Set the vectors_ids property with the ids of the vectors
that are associated with the file in the vectors table
"""
self.vectors_ids = self.supabase_db.get_vectors_by_file_sha1(
self.file_sha1
).data
def file_already_exists(self):
"""
Check if file already exists in vectors table
"""
self.set_file_vectors_ids()
# if the file does not exist in vectors then no need to go check in brains_vectors
if len(self.vectors_ids) == 0: # pyright: ignore reportPrivateUsage=none
return False
return True
def file_already_exists_in_brain(self, brain_id):
"""
Check if file already exists in a brain
Args:
brain_id (str): Brain id
"""
response = self.supabase_db.get_brain_vectors_by_brain_id_and_file_sha1(
brain_id, self.file_sha1 # type: ignore
)
if len(response.data) == 0:
return False
return True
def file_is_empty(self):
"""
Check if file is empty by checking if the file pointer is at the beginning of the file
"""
return self.file.size < 1 # pyright: ignore reportPrivateUsage=none
def link_file_to_brain(self, brain_id):
self.set_file_vectors_ids()
if self.vectors_ids is None:
return
brain_vector_service = BrainVectorService(brain_id)
for vector_id in self.vectors_ids: # pyright: ignore reportPrivateUsage=none
brain_vector_service.create_brain_vector(vector_id["id"], self.file_sha1)