Move EDDNWSGIHandler into its own file

src/eddn/Gateway.py

@@ -14,7 +14,6 @@ from typing import Dict
 from urllib.parse import parse_qs
 
 import gevent
-import gevent.pywsgi
 import simplejson
 import zmq.green as zmq
 from gevent import monkey
@@ -51,6 +50,7 @@ validator = Validator()
 
 # This import must be done post-monkey-patching!
 from eddn.core.StatsCollector import StatsCollector  # noqa: E402
+from eddn.core.EDDNWSGIHandler import EDDNWSGIHandler
 
 stats_collector = StatsCollector()
 stats_collector.start()
@@ -425,55 +425,6 @@ def apply_cors() -> None:
     )
 
 
-class EDDNWSGIHandler(gevent.pywsgi.WSGIHandler):
-    """iHandles overriding request logging."""
-
-    def format_request(self):
-        """
-        Format information about the request for logging.
-
-        The default causes, e.g.:
-
-        <client IP> - - [2022-03-12 16:44:39] "POST /upload/ HTTP/1.1" 400 399 0.000566
-
-        and makes no attempt to handle reverse proxying where we know that
-        X-Forwarded-For has been set by our reverse proxy.  So this will use
-        that header if present to output the correct IP.
-
-        Also, as we're pointing output at our logger, there is no need to
-        include a timestamp in the output.
-
-        This is why we're overriding *this* and not `handle_one_response()`,
-        where we'd change self.client_address there instead.  This does,
-        unfortunately, mean re-creating most of the super-class'es version
-        of the function.
-
-        Resulting output:
-
-        2022-03-12 16:44:39.132 - INFO - pywsgi:1226: <client IP> - - "POST /upload/ HTTP/1.1" 400 399 0.000566
-        """
-        # Start with the same as the super-class would use...
-        client_address = self.client_address[0] if isinstance(self.client_address, tuple) else self.client_address
-
-        # ... but now over-ride it if the header is set.
-        if self.environ.get("HTTP_X_FORWARDED_FOR"):
-            client_address = self.environ["HTTP_X_FORWARDED_FOR"]
-
-        length = self.response_length or '-'
-
-        if self.time_finish:
-            d = self.time_finish - self.time_start
-            delta = f"{d:6f}"
-
-        else:
-            delta = '-'
-
-        # This differs from the super-class version in not having a datestamp
-        return f"{client_address or '-'} - - \"{self.requestline or '-'}\"" \
-               f" {(self._orig_status or self.status or '000').split()[0]}" \
-               f" {length} {delta}"
-
-
 def main() -> None:
     """Handle setting up and running the bottle app."""
     cl_args = parse_cl_args()

src/eddn/core/EDDNWSGIHandler.py

@@ -0,0 +1,56 @@
+"""
+Sub-class of main gevent.pywsgi.WSGIHandler.
+
+Necessary in order to override some behaviour.
+"""
+import gevent
+import gevent.pywsgi
+
+
+class EDDNWSGIHandler(gevent.pywsgi.WSGIHandler):
+    """Handles overriding request logging."""
+
+    def format_request(self) -> str:
+        """
+        Format information about the request for logging.
+
+        The default causes, e.g.:
+
+        <client IP> - - [2022-03-12 16:44:39] "POST /upload/ HTTP/1.1" 400 399 0.000566
+
+        and makes no attempt to handle reverse proxying where we know that
+        X-Forwarded-For has been set by our reverse proxy.  So this will use
+        that header if present to output the correct IP.
+
+        Also, as we're pointing output at our logger, there is no need to
+        include a timestamp in the output.
+
+        This is why we're overriding *this* and not `handle_one_response()`,
+        where we'd change self.client_address there instead.  This does,
+        unfortunately, mean re-creating most of the super-class'es version
+        of the function.
+
+        Resulting output:
+
+        2022-03-12 16:44:39.132 - INFO - pywsgi:1226: <client IP> - - "POST /upload/ HTTP/1.1" 400 399 0.000566
+        """
+        # Start with the same as the super-class would use...
+        client_address = self.client_address[0] if isinstance(self.client_address, tuple) else self.client_address
+
+        # ... but now over-ride it if the header is set.
+        if self.environ.get("HTTP_X_FORWARDED_FOR"):
+            client_address = self.environ["HTTP_X_FORWARDED_FOR"]
+
+        length = self.response_length or '-'
+
+        if self.time_finish:
+            d = self.time_finish - self.time_start
+            delta = f"{d:6f}"
+
+        else:
+            delta = '-'
+
+        # This differs from the super-class version in not having a datestamp
+        return f"{client_address or '-'} - - \"{self.requestline or '-'}\"" \
+               f" {(self._orig_status or self.status or '000').split()[0]}" \
+               f" {length} {delta}"