159 lines
5.6 KiB
Python
159 lines
5.6 KiB
Python
import logging
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from ipaddress import IPv4Address
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from typing import Any, Dict
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import rapidjson
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import uvicorn
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from fastapi import Depends, FastAPI
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from fastapi.middleware.cors import CORSMiddleware
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from starlette.responses import JSONResponse
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from freqtrade.exceptions import OperationalException
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from freqtrade.rpc.api_server.uvicorn_threaded import UvicornServer
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from freqtrade.rpc.rpc import RPC, RPCException, RPCHandler
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logger = logging.getLogger(__name__)
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class FTJSONResponse(JSONResponse):
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media_type = "application/json"
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def render(self, content: Any) -> bytes:
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"""
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Use rapidjson for responses
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Handles NaN and Inf / -Inf in a javascript way by default.
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"""
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return rapidjson.dumps(content).encode("utf-8")
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class ApiServer(RPCHandler):
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__instance = None
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__initialized = False
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_rpc: RPC
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_has_rpc: bool = False
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_bgtask_running: bool = False
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_config: Dict[str, Any] = {}
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def __new__(cls, *args, **kwargs):
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"""
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This class is a singleton.
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We'll only have one instance of it around.
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"""
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if ApiServer.__instance is None:
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ApiServer.__instance = object.__new__(cls)
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ApiServer.__initialized = False
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return ApiServer.__instance
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def __init__(self, config: Dict[str, Any], standalone: bool = False) -> None:
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ApiServer._config = config
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if self.__initialized and (standalone or self._standalone):
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return
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self._standalone: bool = standalone
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self._server = None
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ApiServer.__initialized = True
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api_config = self._config['api_server']
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self.app = FastAPI(title="Freqtrade API",
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docs_url='/docs' if api_config.get('enable_openapi', False) else None,
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redoc_url=None,
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default_response_class=FTJSONResponse,
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)
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self.configure_app(self.app, self._config)
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self.start_api()
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def add_rpc_handler(self, rpc: RPC):
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"""
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Attach rpc handler
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"""
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if not self._has_rpc:
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self._rpc = rpc
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ApiServer._rpc = rpc
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ApiServer._has_rpc = True
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else:
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# This should not happen assuming we didn't mess up.
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raise OperationalException('RPC Handler already attached.')
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def cleanup(self) -> None:
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""" Cleanup pending module resources """
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if self._server:
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logger.info("Stopping API Server")
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self._server.cleanup()
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def send_msg(self, msg: Dict[str, str]) -> None:
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pass
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def handle_rpc_exception(self, request, exc):
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logger.exception(f"API Error calling: {exc}")
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return JSONResponse(
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status_code=502,
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content={'error': f"Error querying {request.url.path}: {exc.message}"}
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)
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def configure_app(self, app: FastAPI, config):
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from freqtrade.rpc.api_server.api_auth import http_basic_or_jwt_token, router_login
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from freqtrade.rpc.api_server.api_v1 import router as api_v1
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from freqtrade.rpc.api_server.api_v1 import router_public as api_v1_public
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from freqtrade.rpc.api_server.web_ui import router_ui
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app.include_router(api_v1_public, prefix="/api/v1")
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app.include_router(api_v1, prefix="/api/v1",
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dependencies=[Depends(http_basic_or_jwt_token)],
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)
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app.include_router(router_login, prefix="/api/v1", tags=["auth"])
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# UI Router MUST be last!
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app.include_router(router_ui, prefix='')
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app.add_middleware(
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CORSMiddleware,
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allow_origins=config['api_server'].get('CORS_origins', []),
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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app.add_exception_handler(RPCException, self.handle_rpc_exception)
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def start_api(self):
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"""
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Start API ... should be run in thread.
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"""
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rest_ip = self._config['api_server']['listen_ip_address']
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rest_port = self._config['api_server']['listen_port']
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logger.info(f'Starting HTTP Server at {rest_ip}:{rest_port}')
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if not IPv4Address(rest_ip).is_loopback:
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logger.warning("SECURITY WARNING - Local Rest Server listening to external connections")
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logger.warning("SECURITY WARNING - This is insecure please set to your loopback,"
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"e.g 127.0.0.1 in config.json")
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if not self._config['api_server'].get('password'):
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logger.warning("SECURITY WARNING - No password for local REST Server defined. "
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"Please make sure that this is intentional!")
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if (self._config['api_server'].get('jwt_secret_key', 'super-secret')
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in ('super-secret, somethingrandom')):
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logger.warning("SECURITY WARNING - `jwt_secret_key` seems to be default."
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"Others may be able to log into your bot.")
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logger.info('Starting Local Rest Server.')
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verbosity = self._config['api_server'].get('verbosity', 'error')
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uvconfig = uvicorn.Config(self.app,
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port=rest_port,
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host=rest_ip,
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use_colors=False,
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log_config=None,
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access_log=True if verbosity != 'error' else False,
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)
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try:
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self._server = UvicornServer(uvconfig)
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self._server.run_in_thread()
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except Exception:
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logger.exception("Api server failed to start.")
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