417 lines
16 KiB
Python
417 lines
16 KiB
Python
import logging
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import hashlib
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import os
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import uuid
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import pytz
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from datetime import datetime
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from typing import Any, Dict, Optional
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from pydantic import BaseModel, Field, ValidationError
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from mem0.llms.utils.tools import (
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ADD_MEMORY_TOOL,
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DELETE_MEMORY_TOOL,
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UPDATE_MEMORY_TOOL,
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)
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from mem0.configs.prompts import MEMORY_DEDUCTION_PROMPT
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from mem0.memory.base import MemoryBase
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from mem0.memory.setup import setup_config
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from mem0.memory.storage import SQLiteManager
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from mem0.memory.telemetry import capture_event
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from mem0.memory.utils import get_update_memory_messages
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from mem0.utils.factory import LlmFactory, EmbedderFactory, VectorStoreFactory
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from mem0.configs.base import MemoryItem, MemoryConfig
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# Setup user config
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setup_config()
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class Memory(MemoryBase):
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def __init__(self, config: MemoryConfig = MemoryConfig()):
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self.config = config
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self.embedding_model = EmbedderFactory.create(self.config.embedder.provider)
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self.vector_store = VectorStoreFactory.create(self.config.vector_store.provider, self.config.vector_store.config)
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self.llm = LlmFactory.create(self.config.llm.provider, self.config.llm.config)
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self.db = SQLiteManager(self.config.history_db_path)
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self.collection_name = self.config.vector_store.config.collection_name if "collection_name" in self.config.vector_store.config else "mem0"
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capture_event("mem0.init", self)
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@classmethod
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def from_config(cls, config_dict: Dict[str, Any]):
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try:
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config = MemoryConfig(**config_dict)
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except ValidationError as e:
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logging.error(f"Configuration validation error: {e}")
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raise
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return cls(config)
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def add(
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self,
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data,
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user_id=None,
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agent_id=None,
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run_id=None,
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metadata=None,
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filters=None,
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prompt=None,
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):
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"""
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Create a new memory.
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Args:
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data (str): Data to store in the memory.
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user_id (str, optional): ID of the user creating the memory. Defaults to None.
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agent_id (str, optional): ID of the agent creating the memory. Defaults to None.
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run_id (str, optional): ID of the run creating the memory. Defaults to None.
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metadata (dict, optional): Metadata to store with the memory. Defaults to None.
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filters (dict, optional): Filters to apply to the search. Defaults to None.
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prompt (str, optional): Prompt to use for memory deduction. Defaults to None.
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Returns:
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str: ID of the created memory.
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"""
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if metadata is None:
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metadata = {}
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embeddings = self.embedding_model.embed(data)
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filters = filters or {}
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if user_id:
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filters["user_id"] = metadata["user_id"] = user_id
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if agent_id:
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filters["agent_id"] = metadata["agent_id"] = agent_id
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if run_id:
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filters["run_id"] = metadata["run_id"] = run_id
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if not prompt:
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prompt = MEMORY_DEDUCTION_PROMPT.format(user_input=data, metadata=metadata)
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extracted_memories = self.llm.generate_response(
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messages=[
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{
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"role": "system",
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"content": "You are an expert at deducing facts, preferences and memories from unstructured text.",
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},
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{"role": "user", "content": prompt},
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]
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)
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existing_memories = self.vector_store.search(
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name=self.collection_name,
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query=embeddings,
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limit=5,
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filters=filters,
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)
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existing_memories = [
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MemoryItem(
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id=mem.id,
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score=mem.score,
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metadata=mem.payload,
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memory=mem.payload["data"],
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)
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for mem in existing_memories
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]
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serialized_existing_memories = [
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item.model_dump(include={"id", "text", "score"})
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for item in existing_memories
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]
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logging.info(f"Total existing memories: {len(existing_memories)}")
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messages = get_update_memory_messages(
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serialized_existing_memories, extracted_memories
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)
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# Add tools for noop, add, update, delete memory.
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tools = [ADD_MEMORY_TOOL, UPDATE_MEMORY_TOOL, DELETE_MEMORY_TOOL]
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response = self.llm.generate_response(messages=messages, tools=tools)
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tool_calls = response["tool_calls"]
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response = []
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if tool_calls:
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# Create a new memory
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available_functions = {
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"add_memory": self._create_memory_tool,
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"update_memory": self._update_memory_tool,
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"delete_memory": self._delete_memory_tool,
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}
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for tool_call in tool_calls:
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function_name = tool_call["name"]
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function_to_call = available_functions[function_name]
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function_args = tool_call["arguments"]
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logging.info(
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f"[openai_func] func: {function_name}, args: {function_args}"
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)
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# Pass metadata to the function if it requires it
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if function_name in ["add_memory", "update_memory"]:
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function_args["metadata"] = metadata
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function_result = function_to_call(**function_args)
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# Fetch the memory_id from the response
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response.append(
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{
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"id": function_result,
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"event": function_name.replace("_memory", ""),
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"data": function_args.get("data"),
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}
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)
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capture_event(
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"mem0.add.function_call",
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self,
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{"memory_id": function_result, "function_name": function_name},
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)
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capture_event("mem0.add", self)
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return {"message": "ok"}
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def get(self, memory_id):
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"""
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Retrieve a memory by ID.
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Args:
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memory_id (str): ID of the memory to retrieve.
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Returns:
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dict: Retrieved memory.
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"""
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capture_event("mem0.get", self, {"memory_id": memory_id})
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memory = self.vector_store.get(name=self.collection_name, vector_id=memory_id)
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if not memory:
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return None
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filters = {key: memory.payload[key] for key in ["user_id", "agent_id", "run_id"] if memory.payload.get(key)}
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# Prepare base memory item
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memory_item = MemoryItem(
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id=memory.id,
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memory=memory.payload["data"],
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hash=memory.payload.get("hash"),
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created_at=memory.payload.get("created_at"),
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updated_at=memory.payload.get("updated_at"),
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).model_dump(exclude={"score"})
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# Add metadata if there are additional keys
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excluded_keys = {"user_id", "agent_id", "run_id", "hash", "data", "created_at", "updated_at"}
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additional_metadata = {k: v for k, v in memory.payload.items() if k not in excluded_keys}
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if additional_metadata:
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memory_item["metadata"] = additional_metadata
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result = {**memory_item, **filters}
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return result
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def get_all(self, user_id=None, agent_id=None, run_id=None, limit=100):
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"""
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List all memories.
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Returns:
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list: List of all memories.
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"""
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filters = {}
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if user_id:
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filters["user_id"] = user_id
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if agent_id:
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filters["agent_id"] = agent_id
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if run_id:
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filters["run_id"] = run_id
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capture_event("mem0.get_all", self, {"filters": len(filters), "limit": limit})
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memories = self.vector_store.list(
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name=self.collection_name, filters=filters, limit=limit
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)
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excluded_keys = {"user_id", "agent_id", "run_id", "hash", "data", "created_at", "updated_at"}
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return [
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{
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**MemoryItem(
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id=mem.id,
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memory=mem.payload["data"],
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hash=mem.payload.get("hash"),
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created_at=mem.payload.get("created_at"),
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updated_at=mem.payload.get("updated_at"),
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).model_dump(exclude={"score"}),
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**{key: mem.payload[key] for key in ["user_id", "agent_id", "run_id"] if key in mem.payload},
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**({"metadata": {k: v for k, v in mem.payload.items() if k not in excluded_keys}}
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if any(k for k in mem.payload if k not in excluded_keys) else {})
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}
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for mem in memories[0]
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]
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def search(
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self, query, user_id=None, agent_id=None, run_id=None, limit=100, filters=None
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):
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"""
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Search for memories.
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Args:
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query (str): Query to search for.
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user_id (str, optional): ID of the user to search for. Defaults to None.
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agent_id (str, optional): ID of the agent to search for. Defaults to None.
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run_id (str, optional): ID of the run to search for. Defaults to None.
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limit (int, optional): Limit the number of results. Defaults to 100.
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filters (dict, optional): Filters to apply to the search. Defaults to None.
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Returns:
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list: List of search results.
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"""
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filters = filters or {}
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if user_id:
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filters["user_id"] = user_id
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if agent_id:
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filters["agent_id"] = agent_id
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if run_id:
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filters["run_id"] = run_id
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capture_event("mem0.search", self, {"filters": len(filters), "limit": limit})
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embeddings = self.embedding_model.embed(query)
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memories = self.vector_store.search(
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name=self.collection_name, query=embeddings, limit=limit, filters=filters
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)
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excluded_keys = {"user_id", "agent_id", "run_id", "hash", "data", "created_at", "updated_at"}
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return [
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{
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**MemoryItem(
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id=mem.id,
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memory=mem.payload["data"],
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hash=mem.payload.get("hash"),
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created_at=mem.payload.get("created_at"),
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updated_at=mem.payload.get("updated_at"),
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score=mem.score,
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).model_dump(),
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**{key: mem.payload[key] for key in ["user_id", "agent_id", "run_id"] if key in mem.payload},
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**({"metadata": {k: v for k, v in mem.payload.items() if k not in excluded_keys}}
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if any(k for k in mem.payload if k not in excluded_keys) else {})
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}
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for mem in memories
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]
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def update(self, memory_id, data):
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"""
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Update a memory by ID.
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Args:
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memory_id (str): ID of the memory to update.
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data (dict): Data to update the memory with.
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Returns:
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dict: Updated memory.
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"""
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capture_event("mem0.update", self, {"memory_id": memory_id})
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self._update_memory_tool(memory_id, data)
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return {'message': 'Memory updated successfully!'}
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def delete(self, memory_id):
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"""
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Delete a memory by ID.
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Args:
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memory_id (str): ID of the memory to delete.
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"""
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capture_event("mem0.delete", self, {"memory_id": memory_id})
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self._delete_memory_tool(memory_id)
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return {'message': 'Memory deleted successfully!'}
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def delete_all(self, user_id=None, agent_id=None, run_id=None):
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"""
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Delete all memories.
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Args:
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user_id (str, optional): ID of the user to delete memories for. Defaults to None.
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agent_id (str, optional): ID of the agent to delete memories for. Defaults to None.
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run_id (str, optional): ID of the run to delete memories for. Defaults to None.
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"""
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filters = {}
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if user_id:
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filters["user_id"] = user_id
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if agent_id:
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filters["agent_id"] = agent_id
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if run_id:
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filters["run_id"] = run_id
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if not filters:
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raise ValueError(
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"At least one filter is required to delete all memories. If you want to delete all memories, use the `reset()` method."
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)
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capture_event("mem0.delete_all", self, {"filters": len(filters)})
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memories = self.vector_store.list(name=self.collection_name, filters=filters)[0]
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for memory in memories:
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self._delete_memory_tool(memory.id)
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return {'message': 'Memories deleted successfully!'}
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def history(self, memory_id):
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"""
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Get the history of changes for a memory by ID.
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Args:
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memory_id (str): ID of the memory to get history for.
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Returns:
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list: List of changes for the memory.
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"""
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capture_event("mem0.history", self, {"memory_id": memory_id})
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return self.db.get_history(memory_id)
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def _create_memory_tool(self, data, metadata=None):
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logging.info(f"Creating memory with {data=}")
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embeddings = self.embedding_model.embed(data)
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memory_id = str(uuid.uuid4())
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metadata = metadata or {}
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metadata["data"] = data
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metadata["hash"] = hashlib.md5(data.encode()).hexdigest()
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metadata["created_at"] = datetime.now(pytz.timezone('US/Pacific')).isoformat()
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self.vector_store.insert(
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name=self.collection_name,
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vectors=[embeddings],
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ids=[memory_id],
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payloads=[metadata],
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)
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self.db.add_history(memory_id, None, data, "ADD", created_at=metadata["created_at"])
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return memory_id
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def _update_memory_tool(self, memory_id, data, metadata=None):
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existing_memory = self.vector_store.get(
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name=self.collection_name, vector_id=memory_id
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)
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prev_value = existing_memory.payload.get("data")
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new_metadata = metadata or {}
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new_metadata["data"] = data
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new_metadata["created_at"] = existing_memory.payload.get("created_at")
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new_metadata["updated_at"] = datetime.now(pytz.timezone('US/Pacific')).isoformat()
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if "user_id" in existing_memory.payload:
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new_metadata["user_id"] = existing_memory.payload["user_id"]
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if "agent_id" in existing_memory.payload:
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new_metadata["agent_id"] = existing_memory.payload["agent_id"]
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if "run_id" in existing_memory.payload:
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new_metadata["run_id"] = existing_memory.payload["run_id"]
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embeddings = self.embedding_model.embed(data)
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self.vector_store.update(
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name=self.collection_name,
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vector_id=memory_id,
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vector=embeddings,
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payload=new_metadata,
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)
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logging.info(f"Updating memory with ID {memory_id=} with {data=}")
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self.db.add_history(memory_id, prev_value, data, "UPDATE", created_at=new_metadata["created_at"], updated_at=new_metadata["updated_at"])
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def _delete_memory_tool(self, memory_id):
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logging.info(f"Deleting memory with {memory_id=}")
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existing_memory = self.vector_store.get(
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name=self.collection_name, vector_id=memory_id
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)
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prev_value = existing_memory.payload["data"]
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self.vector_store.delete(name=self.collection_name, vector_id=memory_id)
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self.db.add_history(memory_id, prev_value, None, "DELETE", is_deleted=1)
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def reset(self):
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"""
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Reset the memory store.
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"""
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self.vector_store.delete_col(name=self.collection_name)
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self.db.reset()
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capture_event("mem0.reset", self)
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def chat(self, query):
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raise NotImplementedError("Chat function not implemented yet.")
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