mirror of
https://gitee.com/wanwujie/deer-flow
synced 2026-04-19 20:34:45 +08:00
d664ae5a4b
* Add checkpointer configuration to config.example.yaml - Introduced a new section for checkpointer configuration to enable state persistence for the embedded DeerFlowClient. - Documented supported types: memory, sqlite, and postgres, along with examples for each. - Clarified that the LangGraph Server manages its own state persistence separately. * refactor(checkpointer): streamline checkpointer initialization and logging * fix(uv.lock): update revision and add new wheel URLs for brotlicffi package * feat: add langchain-anthropic dependency and update related configurations * Fix checkpointer lifecycle, docstring, and path resolution bugs from PR #1005 review (#4) * Initial plan * Address all review suggestions from PR #1005 Co-authored-by: foreleven <4785594+foreleven@users.noreply.github.com> * Fix resolve_path to always return real Path; move SQLite special-string handling to callers Co-authored-by: foreleven <4785594+foreleven@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: foreleven <4785594+foreleven@users.noreply.github.com> --------- Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com> Co-authored-by: foreleven <4785594+foreleven@users.noreply.github.com>
47 lines
1.7 KiB
Python
47 lines
1.7 KiB
Python
"""Configuration for LangGraph checkpointer."""
|
|
|
|
from typing import Literal
|
|
|
|
from pydantic import BaseModel, Field
|
|
|
|
CheckpointerType = Literal["memory", "sqlite", "postgres"]
|
|
|
|
|
|
class CheckpointerConfig(BaseModel):
|
|
"""Configuration for LangGraph state persistence checkpointer."""
|
|
|
|
type: CheckpointerType = Field(
|
|
description="Checkpointer backend type. "
|
|
"'memory' is in-process only (lost on restart). "
|
|
"'sqlite' persists to a local file (requires langgraph-checkpoint-sqlite). "
|
|
"'postgres' persists to PostgreSQL (requires langgraph-checkpoint-postgres)."
|
|
)
|
|
connection_string: str | None = Field(
|
|
default=None,
|
|
description="Connection string for sqlite (file path) or postgres (DSN). "
|
|
"Required for sqlite and postgres types. "
|
|
"For sqlite, use a file path like '.deer-flow/checkpoints.db' or ':memory:' for in-memory. "
|
|
"For postgres, use a DSN like 'postgresql://user:pass@localhost:5432/db'.",
|
|
)
|
|
|
|
|
|
# Global configuration instance — None means no checkpointer is configured.
|
|
_checkpointer_config: CheckpointerConfig | None = None
|
|
|
|
|
|
def get_checkpointer_config() -> CheckpointerConfig | None:
|
|
"""Get the current checkpointer configuration, or None if not configured."""
|
|
return _checkpointer_config
|
|
|
|
|
|
def set_checkpointer_config(config: CheckpointerConfig | None) -> None:
|
|
"""Set the checkpointer configuration."""
|
|
global _checkpointer_config
|
|
_checkpointer_config = config
|
|
|
|
|
|
def load_checkpointer_config_from_dict(config_dict: dict) -> None:
|
|
"""Load checkpointer configuration from a dictionary."""
|
|
global _checkpointer_config
|
|
_checkpointer_config = CheckpointerConfig(**config_dict)
|