Fix crash when using custom datasources (#651)

Author: droserasprout

CHANGELOG.md

@@ -6,9 +6,10 @@ The format is based on [Keep a Changelog], and this project adheres to [Semantic
 
 ## [Unreleased]
 
-### Fixes
+### Fixed
 
 - config: Enable early realtime mode when config contains bigmap indexes with `skip_history`.
+- http: Fixed crash when using custom datasources.
 
 ## [6.5.4] - 2022-03-31
 

src/dipdup/datasources/datasource.py

@@ -37,6 +37,8 @@
 
 
 class Datasource(HTTPGateway):
+    _default_http_config = HTTPConfig()
+
     def __init__(self, url: str, http_config: HTTPConfig | None = None) -> None:
         config = ResolvedHTTPConfig.create(self._default_http_config, http_config)
         super().__init__(url, config)

src/dipdup/http.py

@@ -21,7 +21,6 @@
 from aiolimiter import AsyncLimiter
 
 from dipdup import __version__
-from dipdup.config import HTTPConfig
 from dipdup.config import ResolvedHTTPConfig
 from dipdup.exceptions import FrameworkException
 from dipdup.exceptions import InvalidRequestError
@@ -38,8 +37,6 @@
 class HTTPGateway(AbstractAsyncContextManager[None]):
     """Base class for datasources which connect to remote HTTP endpoints"""
 
-    _default_http_config: HTTPConfig
-
     def __init__(self, url: str, http_config: ResolvedHTTPConfig) -> None:
         self._http_config = http_config
         self._http = _HTTPGateway(url, self._http_config)