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import json
import os
import subprocess
from functools import cached_property
from typing import List, Tuple
from llama_index import (
Document,
GPTVectorStoreIndex,
StorageContext,
load_index_from_storage,
)
from llama_index.langchain_helpers.text_splitter import TokenTextSplitter
from ..util.logging import logger
from .update import filter_ignored_files, load_gpt_index_documents
class ChromaIndexManager:
workspace_dir: str
def __init__(self, workspace_dir: str):
self.workspace_dir = workspace_dir
@cached_property
def current_commit(self) -> str:
"""Get the current commit."""
return (
subprocess.check_output(
["git", "rev-parse", "HEAD"], cwd=self.workspace_dir
)
.decode("utf-8")
.strip()
)
@cached_property
def current_branch(self) -> str:
"""Get the current branch."""
return (
subprocess.check_output(
["git", "rev-parse", "--abbrev-ref", "HEAD"], cwd=self.workspace_dir
)
.decode("utf-8")
.strip()
)
@cached_property
def index_dir(self) -> str:
return os.path.join(
self.workspace_dir, ".continue", "chroma", self.current_branch
)
@cached_property
def git_root_dir(self):
"""Get the root directory of a Git repository."""
try:
return (
subprocess.check_output(
["git", "rev-parse", "--show-toplevel"], cwd=self.workspace_dir
)
.strip()
.decode()
)
except subprocess.CalledProcessError:
return None
def check_index_exists(self):
return os.path.exists(os.path.join(self.index_dir, "metadata.json"))
def create_codebase_index(self):
"""Create a new index for the current branch."""
if not self.check_index_exists():
os.makedirs(self.index_dir)
else:
return
documents = load_gpt_index_documents(self.workspace_dir)
chunks = {}
doc_chunks = []
for doc in documents:
text_splitter = TokenTextSplitter()
try:
text_chunks = text_splitter.split_text(doc.text)
except:
logger.warning(f"ERROR (probably found special token): {doc.text}")
continue # lol
filename = doc.extra_info["filename"]
chunks[filename] = len(text_chunks)
for i, text in enumerate(text_chunks):
doc_chunks.append(Document(text, doc_id=f"{filename}::{i}"))
with open(f"{self.index_dir}/metadata.json", "w") as f:
json.dump({"commit": self.current_commit, "chunks": chunks}, f, indent=4)
index = GPTVectorStoreIndex([])
for chunk in doc_chunks:
index.insert(chunk)
# d = 1536 # Dimension of text-ada-embedding-002
# faiss_index = faiss.IndexFlatL2(d)
# index = GPTFaissIndex(documents, faiss_index=faiss_index)
# index.save_to_disk(f"{index_dir_for(branch)}/index.json", faiss_index_save_path=f"{index_dir_for(branch)}/index_faiss_core.index")
index.storage_context.persist(persist_dir=self.index_dir)
logger.debug("Codebase index created")
def get_modified_deleted_files(self) -> Tuple[List[str], List[str]]:
"""Get a list of all files that have been modified since the last commit."""
metadata = f"{self.index_dir}/metadata.json"
with open(metadata, "r") as f:
previous_commit = json.load(f)["commit"]
modified_deleted_files = (
subprocess.check_output(
["git", "diff", "--name-only", previous_commit, self.current_commit]
)
.decode("utf-8")
.strip()
)
modified_deleted_files = modified_deleted_files.split("\n")
modified_deleted_files = [f for f in modified_deleted_files if f]
deleted_files = [
f
for f in modified_deleted_files
if not os.path.exists(os.path.join(self.workspace_dir, f))
]
modified_files = [
f
for f in modified_deleted_files
if os.path.exists(os.path.join(self.workspace_dir, f))
]
return filter_ignored_files(
modified_files, self.index_dir
), filter_ignored_files(deleted_files, self.index_dir)
def update_codebase_index(self):
"""Update the index with a list of files."""
if not self.check_index_exists():
self.create_codebase_index()
else:
# index = GPTFaissIndex.load_from_disk(f"{index_dir_for(branch)}/index.json", faiss_index_save_path=f"{index_dir_for(branch)}/index_faiss_core.index")
index = GPTVectorStoreIndex.load_from_disk(f"{self.index_dir}/index.json")
modified_files, deleted_files = self.get_modified_deleted_files()
with open(f"{self.index_dir}/metadata.json", "r") as f:
metadata = json.load(f)
for file in deleted_files:
num_chunks = metadata["chunks"][file]
for i in range(num_chunks):
index.delete(f"{file}::{i}")
del metadata["chunks"][file]
logger.debug(f"Deleted {file}")
for file in modified_files:
if file in metadata["chunks"]:
num_chunks = metadata["chunks"][file]
for i in range(num_chunks):
index.delete(f"{file}::{i}")
logger.debug(f"Deleted old version of {file}")
with open(file, "r") as f:
text = f.read()
text_splitter = TokenTextSplitter()
text_chunks = text_splitter.split_text(text)
for i, text in enumerate(text_chunks):
index.insert(Document(text, doc_id=f"{file}::{i}"))
metadata["chunks"][file] = len(text_chunks)
logger.debug(f"Inserted new version of {file}")
metadata["commit"] = self.current_commit
with open(f"{self.index_dir}/metadata.json", "w") as f:
json.dump(metadata, f, indent=4)
logger.debug("Codebase index updated")
def query_codebase_index(self, query: str) -> str:
"""Query the codebase index."""
if not self.check_index_exists():
logger.debug(f"No index found for the codebase at {self.index_dir}")
return ""
storage_context = StorageContext.from_defaults(persist_dir=self.index_dir)
index = load_index_from_storage(storage_context)
# index = GPTVectorStoreIndex.load_from_disk(path)
engine = index.as_query_engine()
return engine.query(query)
def query_additional_index(self, query: str) -> str:
"""Query the additional index."""
index = GPTVectorStoreIndex.load_from_disk(
os.path.join(self.index_dir, "additional_index.json")
)
return index.query(query)
def replace_additional_index(self, info: str):
"""Replace the additional index with the given info."""
with open(f"{self.index_dir}/additional_context.txt", "w") as f:
f.write(info)
documents = [Document(info)]
index = GPTVectorStoreIndex(documents)
index.save_to_disk(f"{self.index_dir}/additional_index.json")
logger.debug("Additional index replaced")
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