初始化提交
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@@ -17,19 +17,22 @@ def load_configs():
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def get_documents():
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documents = []
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config = load_configs()
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if config is None or len(config.items()) == 0:
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return documents
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for loader_type, loader_config in config.items():
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logger.info(
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f"Loading documents from loader: {loader_type}, config: {loader_config}"
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)
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loader_config = loader_config or []
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match loader_type:
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case "file":
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document = get_file_documents(FileLoaderConfig(**loader_config))
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case "web":
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document = get_web_documents(WebLoaderConfig(**loader_config))
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case "db":
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document = get_db_documents(
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configs=[DBLoaderConfig(**cfg) for cfg in loader_config]
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)
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document = get_db_documents(configs=[DBLoaderConfig(**cfg) for cfg in loader_config])
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case _:
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raise ValueError(f"Invalid loader type: {loader_type}")
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documents.extend(document)
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@@ -1,26 +1,187 @@
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import os
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import logging
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from typing import List
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from typing import Any, List, Optional
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from llama_index.core.readers.base import BaseReader
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from llama_index.core.schema import Document
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from llama_index.core.utilities.sql_wrapper import SQLDatabase
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from sqlalchemy import text
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from sqlalchemy.engine import Engine
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from llama_index.core import SQLDatabase, Document
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from llama_index.core.objects import SQLTableSchema, SQLTableNodeMapping
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from llama_index.core.readers.base import BaseReader
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from llama_index.readers.database import DatabaseReader
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from pydantic import BaseModel, validator
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from llama_index.core.indices.vector_store import VectorStoreIndex
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from sqlalchemy import create_engine
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logger = logging.getLogger(__name__)
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class CustomDatabaseReader(BaseReader):
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"""Simple Database reader.
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Concatenates each row into Document used by LlamaIndex.
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Args:
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sql_database (Optional[SQLDatabase]): SQL database to use,
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including table names to specify.
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See :ref:`Ref-Struct-Store` for more details.
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OR
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engine (Optional[Engine]): SQLAlchemy Engine object of the database connection.
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OR
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uri (Optional[str]): uri of the database connection.
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OR
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scheme (Optional[str]): scheme of the database connection.
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host (Optional[str]): host of the database connection.
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port (Optional[int]): port of the database connection.
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user (Optional[str]): user of the database connection.
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password (Optional[str]): password of the database connection.
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dbname (Optional[str]): dbname of the database connection.
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Returns:
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DatabaseReader: A DatabaseReader object.
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"""
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def __init__(
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self,
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sql_database: Optional[SQLDatabase] = None,
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engine: Optional[Engine] = None,
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uri: Optional[str] = None,
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scheme: Optional[str] = None,
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host: Optional[str] = None,
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port: Optional[str] = None,
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user: Optional[str] = None,
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password: Optional[str] = None,
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dbname: Optional[str] = None,
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*args: Any,
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**kwargs: Any,
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) -> None:
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"""Initialize with parameters."""
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if sql_database:
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self.sql_database = sql_database
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elif engine:
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self.sql_database = SQLDatabase(engine, *args, **kwargs)
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elif uri:
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self.uri = uri
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self.sql_database = SQLDatabase.from_uri(uri, *args, **kwargs)
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elif scheme and host and port and user and password and dbname:
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uri = f"{scheme}://{user}:{password}@{host}:{port}/{dbname}"
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self.uri = uri
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self.sql_database = SQLDatabase.from_uri(uri, *args, **kwargs)
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else:
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raise ValueError(
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"You must provide either a SQLDatabase, "
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"a SQL Alchemy Engine, a valid connection URI, or a valid "
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"set of credentials."
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)
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def load_data(self, query: str) -> List[Document]:
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"""Query and load data from the Database, returning a list of Documents.
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Args:
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query (str): Query parameter to filter tables and rows.
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Returns:
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List[Document]: A list of Document objects.
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"""
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dco_str = ""
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with self.sql_database.engine.connect() as connection:
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if query is None:
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raise ValueError("A query parameter is necessary to filter the data")
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else:
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result = connection.execute(text(query))
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dco_str = ", ".join(
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[f"{entry}" for entry in result.keys()]
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)
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for item in result.fetchall():
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# fetch each item
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record_str = ", ".join(
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[f"{entry}" for col, entry in zip(result.keys(), item)]
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)
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dco_str += record_str + "\n"
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doc = Document(text=dco_str)
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doc.metadata["name"] = query
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doc.metadata["context"] = query
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doc.metadata["file_type"] = "application/vnd.ms-excel"
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return [doc]
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class DBLoaderConfig(BaseModel):
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uri: str
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queries: List[str]
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def makeDescriptionByEngine(sql_database:SQLDatabase):
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reader = DatabaseReader(sql_database)
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table_names = sql_database.get_usable_table_names()
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table_schema_objs = []
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for table_name in table_names:
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columns = sql_database.get_table_columns(table_name)
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if len(columns) > 150:
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continue
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stats_txt = ""
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if table_name == 'gongchengshuxing':
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stats_txt = '该表中有以下属性:'
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documents = reader.load_data(query='select name from gongchengshuxing')
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for index in range(len(documents) if len(documents) < 30 else 30):
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if index == 0:
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continue
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elif index > 1:
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stats_txt += ','
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stats_txt += documents[index].text.split(':')[1]
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tbSchema = (SQLTableSchema(table_name=table_name, context_str=stats_txt))
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table_schema_objs.append(tbSchema)
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return table_schema_objs
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def get_db_documents(configs: list[DBLoaderConfig]):
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from llama_index.readers.database import DatabaseReader
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docs = []
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if len(configs) == 0 or configs[0].uri == "":
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logger.warning(
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f"Failed to load database, error message: uri is empty. Return as empty document list."
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)
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return docs
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metadata = {
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#'file_name':'',
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'file_type':'application/booway.document.zj',
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#'file_path':'',
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#'file_size':'',
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#'creation_date':'',
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#'last_modified_date':'',
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}
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#from llama_index.readers.database import DatabaseReader
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for entry in configs:
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loader = DatabaseReader(uri=entry.uri)
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for query in entry.queries:
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engine = create_engine(entry.uri)
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sql_database = SQLDatabase(engine)
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table_schema_objs = makeDescriptionByEngine(sql_database)
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table_node_mapping = SQLTableNodeMapping(sql_database)
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nodes = table_node_mapping.to_nodes(table_schema_objs)
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for node in nodes:
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node.metadata.update(metadata)
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docs.extend(nodes)
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queries = entry.queries or []
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loader = CustomDatabaseReader(sql_database)
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for query in queries:
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logger.info(f"Loading data from database with query: {query}")
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documents = loader.load_data(query=query)
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docs.extend(documents)
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return documents
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docs.extend(documents)
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return docs
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@@ -1,6 +1,9 @@
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import os
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import logging
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from typing import Dict
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from llama_index.core.readers.base import BaseReader
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from llama_index.core.readers.json import JSONReader
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from llama_parse import LlamaParse
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from pydantic import BaseModel, validator
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@@ -39,6 +42,9 @@ def llama_parse_extractor() -> Dict[str, LlamaParse]:
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parser = llama_parse_parser()
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return {file_type: parser for file_type in SUPPORTED_FILE_TYPES}
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def llama_local_extractor() -> Dict[str, BaseReader]:
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return {"json" : JSONReader}
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def get_file_documents(config: FileLoaderConfig):
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from llama_index.core.readers import SimpleDirectoryReader
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@@ -53,6 +59,9 @@ def get_file_documents(config: FileLoaderConfig):
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nest_asyncio.apply()
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file_extractor = llama_parse_extractor()
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else:
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file_extractor = llama_local_extractor()
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reader = SimpleDirectoryReader(
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config.data_dir,
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recursive=True,
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@@ -11,7 +11,7 @@ class CrawlUrl(BaseModel):
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class WebLoaderConfig(BaseModel):
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driver_arguments: list[str] = Field(default=None)
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urls: list[CrawlUrl]
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urls: list[CrawlUrl] = []
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def get_web_documents(config: WebLoaderConfig):
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@@ -25,6 +25,7 @@ def get_web_documents(config: WebLoaderConfig):
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options.add_argument(arg)
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docs = []
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urls = config.urls or []
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for url in config.urls:
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scraper = WholeSiteReader(
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prefix=url.prefix,
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