mirror of
https://github.com/GNS3/gns3-server.git
synced 2026-08-27 12:30:13 +03:00
b780bfaf53
- Replace separate user_id and jwt_token parameters with unified llm_config dict - Simplify model factory to accept llm_config directly instead of fetching from API - Update llm_call and generate_title nodes to extract llm_config from LangGraph config - Remove deprecated API fetching logic from model factory - Maintain backward compatibility for existing tool usage patterns This change centralizes LLM configuration management, reducing API calls and improving performance by passing configuration directly from the API layer rather than fetching it repeatedly.
408 lines
16 KiB
Python
408 lines
16 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2020 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import asyncio
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import time
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import os
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from fastapi import FastAPI
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from pydantic import ValidationError
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from typing import List, Optional
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from sqlalchemy import event
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from sqlalchemy.engine import Engine
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from sqlalchemy.exc import SQLAlchemyError
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import sqlalchemy as sa
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from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession
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from alembic import command, config
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from alembic.script import ScriptDirectory
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from alembic.runtime.migration import MigrationContext
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from alembic.util.exc import CommandError
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from watchdog.observers import Observer
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from watchdog.events import FileSystemEvent, PatternMatchingEventHandler
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from gns3server.db.repositories.computes import ComputesRepository
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from gns3server.db.repositories.images import ImagesRepository
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from gns3server.utils.images import md5sum, discover_images, read_image_info, InvalidImageError
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from gns3server.utils.asyncio import wait_run_in_executor
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from gns3server import schemas
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from .models import Base
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from gns3server.config import Config
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import logging
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log = logging.getLogger(__name__)
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def run_upgrade(connection, cfg):
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cfg.attributes["connection"] = connection
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try:
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command.upgrade(cfg, "head")
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except CommandError as e:
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log.error(f"Could not upgrade database: {e}")
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def run_stamp(connection, cfg):
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cfg.attributes["connection"] = connection
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try:
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command.stamp(cfg, "head")
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except CommandError as e:
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log.error(f"Could not stamp database: {e}")
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def check_revision(connection, cfg):
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script = ScriptDirectory.from_config(cfg)
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head_rev = script.get_revision("head").revision
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context = MigrationContext.configure(connection)
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current_rev = context.get_current_revision()
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return current_rev, head_rev
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async def connect_to_db(app: FastAPI) -> None:
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db_path = os.path.join(Config.instance().config_dir, "gns3_controller.db")
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db_url = os.environ.get("GNS3_DATABASE_URI", f"sqlite+aiosqlite:///{db_path}")
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engine = create_async_engine(db_url, connect_args={"check_same_thread": False, "timeout": 20}, future=True, pool_size=512, max_overflow=1024)
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alembic_cfg = config.Config()
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alembic_cfg.set_main_option("script_location", "gns3server:db_migrations")
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#alembic_cfg.set_main_option('sqlalchemy.url', db_url)
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try:
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async with engine.connect() as conn:
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current_rev, head_rev = await conn.run_sync(check_revision, alembic_cfg)
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log.info(f"Current database revision is {current_rev}")
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if current_rev is None:
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# No version tracking found. Check if this is a truly new database
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# or an old database that needs migration.
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def check_db_state(connection):
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# Check if llm_model_configs table exists
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inspector = sa.inspect(connection)
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tables = inspector.get_table_names()
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if 'users' not in tables:
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return 'new' # Truly new database
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# Check for new feature columns that indicate this is already migrated
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columns = [col['name'] for col in inspector.get_columns('users')]
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if 'llm_model_configs' in tables:
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# The llm_model_configs table already exists (created from code)
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return 'new_with_llm_configs'
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else:
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# Old database without llm_model_configs table, needs migration
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return 'old_needs_migration'
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db_state = await conn.run_sync(check_db_state)
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if db_state == 'new':
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# Truly new database: create all tables and stamp
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await conn.run_sync(Base.metadata.create_all)
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await conn.run_sync(run_stamp, alembic_cfg)
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await conn.commit()
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log.info("Created new database and stamped to head revision")
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elif db_state == 'new_with_llm_configs':
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# Database already has llm_model_configs table (from Base.metadata.create_all)
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# Just stamp the version
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await conn.run_sync(run_stamp, alembic_cfg)
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await conn.commit()
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log.info("Database has llm_model_configs table, stamped to head revision")
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else:
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# Old database without llm_model_configs table: run migrations
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log.info("Old database detected, running migrations to add llm_model_configs table...")
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await conn.run_sync(run_upgrade, alembic_cfg)
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await conn.commit()
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log.info("Database migrations completed successfully")
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elif current_rev != head_rev:
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# upgrade the database if needed
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log.info(f"Upgrading database from revision {current_rev} to {head_rev}...")
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await conn.run_sync(run_upgrade, alembic_cfg)
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await conn.commit()
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log.info("Database upgrade completed successfully")
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app.state._db_engine = engine
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except SQLAlchemyError as e:
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log.fatal(f"Error while connecting to database '{db_url}: {e}")
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async def disconnect_from_db(app: FastAPI) -> None:
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# dispose of the connection pool used by the database engine
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if getattr(app.state, "_db_engine"):
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await app.state._db_engine.dispose()
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log.info(f"Disconnected from database")
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@event.listens_for(Engine, "connect")
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def set_sqlite_pragma(dbapi_connection, connection_record):
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# Enable SQL foreign key support for SQLite
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# https://docs.sqlalchemy.org/en/14/dialects/sqlite.html#foreign-key-support
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cursor = dbapi_connection.cursor()
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cursor.execute("PRAGMA foreign_keys=ON")
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cursor.close()
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async def get_computes(app: FastAPI) -> List[dict]:
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computes = []
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async with AsyncSession(app.state._db_engine) as db_session:
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db_computes = await ComputesRepository(db_session).get_computes()
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for db_compute in db_computes:
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try:
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compute = schemas.Compute.model_validate(db_compute)
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except ValidationError as e:
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log.error(f"Could not load compute '{db_compute.compute_id}' from database: {e}")
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continue
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computes.append(compute)
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return computes
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async def discover_images_on_filesystem(app: FastAPI) -> None:
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async with AsyncSession(app.state._db_engine) as db_session:
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images_repository = ImagesRepository(db_session)
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db_images = await images_repository.get_images()
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existing_image_paths = []
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for db_image in db_images:
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try:
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image = schemas.Image.model_validate(db_image)
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existing_image_paths.append(image.path)
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except ValidationError as e:
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log.error(f"Could not load image '{db_image.filename}' from database: {e}")
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continue
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for image_type in ("qemu", "ios", "iou"):
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discovered_images = await discover_images(image_type, existing_image_paths)
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for image in discovered_images:
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log.info(f"Adding discovered image '{image['path']}' to the database")
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try:
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await images_repository.add_image(**image)
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except SQLAlchemyError as e:
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log.warning(f"Error while adding image '{image['path']}' to the database: {e}")
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# monitor if images have been manually added
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asyncio.create_task(monitor_images_on_filesystem(app))
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async def update_disk_checksums(updated_disks: List[str]) -> None:
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"""
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Update the checksum of a list of disks in the database.
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:param updated_disks: list of updated disks
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"""
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from gns3server.api.server import app
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async with AsyncSession(app.state._db_engine) as db_session:
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images_repository = ImagesRepository(db_session)
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for path in updated_disks:
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image = await images_repository.get_image(path)
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if image:
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log.info(f"Updating image '{path}' in the database")
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checksum = await wait_run_in_executor(md5sum, path, cache_to_md5file=False)
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if image.checksum != checksum:
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await images_repository.update_image(path, checksum, "md5")
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class EventHandler(PatternMatchingEventHandler):
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"""
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Watchdog event handler.
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"""
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def __init__(self, queue: asyncio.Queue, loop: asyncio.BaseEventLoop, **kwargs):
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self._loop = loop
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self._queue = queue
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# ignore temporary files, md5sum files, hidden files and directories
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super().__init__(ignore_patterns=["*.tmp", "*.md5sum", ".*"], ignore_directories = True, **kwargs)
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def on_closed(self, event: FileSystemEvent) -> None:
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# monitor for closed files (e.g. when a file has finished to be copied)
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if "/lib/" in event.src_path or "/lib64/" in event.src_path:
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return # ignore custom IOU libraries
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self._loop.call_soon_threadsafe(self._queue.put_nowait, event)
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class EventIterator(object):
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"""
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Watchdog Event iterator.
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"""
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def __init__(self, queue: asyncio.Queue):
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self.queue = queue
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def __aiter__(self):
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return self
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async def __anext__(self):
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item = await self.queue.get()
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if item is None:
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raise StopAsyncIteration
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return item
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async def monitor_images_on_filesystem(app: FastAPI):
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def watchdog(
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path: str,
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queue: asyncio.Queue,
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loop: asyncio.BaseEventLoop,
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app: FastAPI, recursive: bool = False
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) -> None:
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"""
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Thread to monitor a directory for new images.
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"""
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handler = EventHandler(queue, loop)
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observer = Observer()
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observer.schedule(handler, str(path), recursive=recursive)
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observer.start()
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log.info(f"Monitoring for new images in '{path}'")
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while True:
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time.sleep(1)
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# stop when the app is exiting
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if app.state.exiting:
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observer.stop()
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observer.join(10)
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log.info(f"Stopping monitoring for new images in '{path}'")
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loop.call_soon_threadsafe(queue.put_nowait, None)
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break
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queue = asyncio.Queue()
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loop = asyncio.get_event_loop()
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server_config = Config.instance().settings.Server
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image_dir = os.path.expanduser(server_config.images_path)
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asyncio.get_event_loop().run_in_executor(None, watchdog,image_dir, queue, loop, app, True)
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async for filesystem_event in EventIterator(queue):
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# read the file system event from the queue
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image_path = filesystem_event.src_path
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expected_image_type = None
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if "IOU" in image_path:
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expected_image_type = "iou"
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elif "QEMU" in image_path:
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expected_image_type = "qemu"
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elif "IOS" in image_path:
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expected_image_type = "ios"
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async with AsyncSession(app.state._db_engine) as db_session:
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images_repository = ImagesRepository(db_session)
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try:
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image = await read_image_info(image_path, expected_image_type)
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except InvalidImageError as e:
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log.warning(str(e))
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continue
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try:
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if await images_repository.get_image(image_path):
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continue
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await images_repository.add_image(**image)
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log.info(f"Discovered image '{image_path}' has been added to the database")
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except SQLAlchemyError as e:
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log.warning(f"Error while adding image '{image_path}' to the database: {e}")
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async def get_user_llm_config_full(user_id: str, app: FastAPI) -> Optional[dict]:
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"""
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Get user's full LLM configuration with decrypted API key for Copilot.
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This is a system-level function that bypasses API security restrictions.
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It retrieves the complete configuration including decrypted API keys,
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even for inherited group configurations.
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Args:
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user_id: User UUID
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app: FastAPI application instance
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Returns:
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Dictionary with LLM configuration (provider, model, api_key, etc.)
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or None if not found.
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"""
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from uuid import UUID
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from gns3server.db.repositories.llm_model_configs import LLMModelConfigsRepository
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from gns3server.utils.encryption import decrypt, is_encrypted
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try:
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user_uuid = UUID(user_id) if isinstance(user_id, str) else user_id
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async with AsyncSession(app.state._db_engine, expire_on_commit=False) as session:
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repo = LLMModelConfigsRepository(session)
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# Get effective configs (own + inherited from groups)
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result = await repo.get_user_effective_configs(
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user_uuid,
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current_user_id=user_uuid, # Viewing own config
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current_user_is_superadmin=False
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)
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if not result or not result.get("default_config"):
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log.warning(f"No default LLM configuration found for user {user_id}")
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return None
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default_config = result["default_config"]
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config_id = default_config["config_id"]
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source = default_config["source"] # "user" or "group"
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# Get full config from database
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if source == "user":
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full_config = await repo.get_user_config(config_id)
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else:
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full_config = await repo.get_group_config(config_id)
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if not full_config:
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log.error(f"Failed to retrieve full config from database: config_id={config_id}")
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return None
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# Decrypt API key
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config_data = full_config.config.copy()
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if "api_key" in config_data and config_data["api_key"]:
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try:
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if is_encrypted(config_data["api_key"]):
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config_data["api_key"] = decrypt(config_data["api_key"])
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log.debug(f"Successfully decrypted API key for user {user_id}")
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except Exception as e:
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log.error(f"Failed to decrypt API key: {e}")
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config_data["api_key"] = None
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# Build configuration dict
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llm_config = {
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"config_id": str(full_config.config_id),
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"name": full_config.name,
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"model_type": str(full_config.model_type),
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"source": source,
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"group_name": default_config.get("group_name"),
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"user_id": str(full_config.user_id) if full_config.user_id else None,
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"group_id": str(full_config.group_id) if full_config.group_id else None,
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**config_data # provider, api_key, model, temperature, etc.
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}
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# Validate required fields
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if not llm_config.get("provider"):
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log.error(f"LLM config missing 'provider' field: {config_id}")
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return None
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if not llm_config.get("model"):
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log.error(f"LLM config missing 'model' field: {config_id}")
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return None
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log.info(
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f"Retrieved LLM config for user {user_id}: "
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f"provider={llm_config.get('provider')}, model={llm_config.get('model')}, source={source}"
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)
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return llm_config
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except Exception as e:
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log.error(f"Failed to retrieve LLM config for user {user_id}: {e}", exc_info=True)
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return None
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