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* feat(agents): database-backed storage for custom agent definitions Add an agent_storage.backend switch (default file, behaviour-unchanged) with a db backend that stores each custom agent as a row in the shared SQL persistence layer, so a multi-instance deployment sees the same agents on every node (#4331, #4357). Introduces an AgentStore interface routing all read/write surfaces, an agents table + migration 0006, startup validation, and a file->db importer. Follows the thread_meta store / run_events backend-switch / 0003_scheduled_tasks migration patterns; no new dependency. * fix(agents): make db storage path production-ready (review round 1) Addresses review feedback on the db/sync agent-storage path: - sql.py: mirror the async engine's per-connection SQLite PRAGMAs on the sync engine (busy_timeout=30000, synchronous=NORMAL, foreign_keys=ON, WAL) so both engines behave identically against the shared DB; guard the engine cache with a lock (double-checked) so concurrent first-touch cannot build duplicate engines or register the connect listener twice. - routers/agents.py + routers/assistants_compat.py: offload the sync-store reads that ran on the event loop (list/get/check, update's pre-read + legacy guard + refresh, and assistants_compat's four list routes) via asyncio.to_thread — on db+postgres each was a network round trip stalling the loop. Writes were already offloaded. - file.py: translate the create() mkdir(exist_ok=False) race FileExistsError into AgentExistsError (router 409, matching SqlAgentStore's IntegrityError path); correct the _write docstring — per-file atomic replace, two commits sequential not transactional. Tests: sync-engine PRAGMA + engine-cache reuse assertions; file create-race -> AgentExistsError; strict Blockbuster anchor over the read endpoints so a regression back onto the loop fails CI. * fix(agents): address round-2 review on the db store path - update_agent tool: align the docstring/inline comment with FileAgentStore._write. Cross-field write atomicity is db-only; the file backend commits config then soul via two sequential os.replace (a crash between them can leave a fresh config.yaml beside a stale SOUL.md). The dropped partial-write *reporting* is an intentional tradeoff — the stage-then-replace safety is preserved (test_update_agent_soul_failure_does_not_replace_config still holds). - SqlAgentStore.update(): true upsert. Catch IntegrityError on the insert-on-missing branch, re-fetch and apply, so two concurrent first-time writes (e.g. two setup_agent handshakes) converge instead of surfacing a raw UNIQUE(user_id, name) violation as a 500. Symmetric with create(). - get_agent_store(): document the graph-subprocess config-resolution invariant (the except->file fallback is a genuine no-config path, not a mask for a misconfigured graph process) and pin it with two tests driving the real get_app_config() file resolution: db resolves from an on-disk config.yaml, file fallback when config is unresolvable. * test(agents): cover SqlAgentStore.update() write-race upsert recovery Mandatory-TDD test for the round-2 fix in 0680340a: two concurrent first-time update()s where the loser's insert hits UNIQUE(user_id, name). Deterministically forces the IntegrityError recovery path by making the first _row probe miss the committed winner, and asserts last-writer-wins instead of a surfaced 500.
94 lines
3.6 KiB
Python
94 lines
3.6 KiB
Python
#!/usr/bin/env python
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"""One-shot importer: copy file-backed custom agents into the ``db`` agent store.
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For operators switching ``agent_storage.backend`` from ``file`` to ``db``. Reads
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every agent from the on-disk layout (both the per-user
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``{base_dir}/users/{user_id}/agents/`` and the legacy shared
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``{base_dir}/agents/``, with the same shadowing rule the file store uses) and
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writes each as a row in the shared ``agents`` table.
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Design (mirrors ``scripts/migrate_user_isolation.py``):
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- Explicit, operator-run. Nothing auto-imports on boot.
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- Idempotent: an agent already present in the db is skipped, so re-running is safe.
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- Non-destructive: the on-disk files are left untouched, so unsetting
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``agent_storage.backend`` (back to ``file``) is a clean rollback.
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Usage::
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python scripts/migrate_agents_to_db.py [--dry-run]
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Requires ``database.backend`` to be ``sqlite`` or ``postgres`` in config.yaml.
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"""
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from __future__ import annotations
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import argparse
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import asyncio
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import logging
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import sys
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from deerflow.config.app_config import get_app_config
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from deerflow.persistence.agents.base import AgentExistsError
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from deerflow.persistence.agents.file import FileAgentStore
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from deerflow.persistence.agents.sql import SqlAgentStore
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logger = logging.getLogger("migrate_agents_to_db")
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def main() -> int:
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parser = argparse.ArgumentParser(description="Import file-backed custom agents into the db agent store.")
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parser.add_argument("--dry-run", action="store_true", help="List what would be imported without writing to the database.")
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args = parser.parse_args()
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logging.basicConfig(level=logging.INFO, format="%(message)s")
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config = get_app_config()
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db_backend = getattr(config.database, "backend", None)
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if db_backend not in ("sqlite", "postgres"):
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logger.error(
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"database.backend is %r; this importer needs 'sqlite' or 'postgres'. Set it in config.yaml (the same database the gateway uses).",
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db_backend,
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)
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return 1
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source = FileAgentStore()
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agents = source.list_all()
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if not agents:
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logger.info("No file-backed agents found — nothing to import.")
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return 0
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if args.dry_run:
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for user_id, cfg in agents:
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logger.info("[dry-run] would import %s/%s", user_id, cfg.name)
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logger.info("[dry-run] %d agent(s) would be imported. Source files are left in place.", len(agents))
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return 0
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# Ensure the schema exists (creates the ``agents`` table via the same
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# Alembic bootstrap the gateway runs) before the sync store writes rows.
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from deerflow.persistence.engine import init_engine_from_config
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asyncio.run(init_engine_from_config(config.database))
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dest = SqlAgentStore(config.database.app_sync_sqlalchemy_url)
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imported = 0
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skipped = 0
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for user_id, cfg in agents:
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soul = source.get_soul(cfg.name, user_id=user_id) or ""
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# exclude_unset keeps the stored document as sparse as the source file
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# (only the keys the operator actually wrote), matching the file layout.
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document = cfg.model_dump(exclude_unset=True)
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try:
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dest.create(cfg.name, document, soul, user_id=user_id)
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imported += 1
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logger.info("imported %s/%s", user_id, cfg.name)
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except AgentExistsError:
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skipped += 1
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logger.info("skip %s/%s: already present in db", user_id, cfg.name)
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logger.info("Done: %d imported, %d already present. Source files left in place (rollback: revert agent_storage.backend to 'file').", imported, skipped)
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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