always set SignalR events at the end of handlers (#445)

Addresses an issue where events meant for SignalR do not get sent to the service when an App Service instance spins down before a timer event fires.

src/api-service/__app__/containers/__init__.py

@@ -21,6 +21,7 @@ from ..onefuzzlib.azure.containers import (
 )
 from ..onefuzzlib.azure.storage import StorageType
 from ..onefuzzlib.endpoint_authorization import call_if_user
+from ..onefuzzlib.events import get_events
 from ..onefuzzlib.request import not_ok, ok, parse_request
 
 
@@ -89,7 +90,13 @@ def delete(req: func.HttpRequest) -> func.HttpResponse:
     return ok(BoolResult(result=delete_container(request.name, StorageType.corpus)))
 
 
-def main(req: func.HttpRequest) -> func.HttpResponse:
+def main(req: func.HttpRequest, dashboard: func.Out[str]) -> func.HttpResponse:
     methods = {"GET": get, "POST": post, "DELETE": delete}
     method = methods[req.method]
-    return call_if_user(req, method)
+    result = call_if_user(req, method)
+
+    events = get_events()
+    if events:
+        dashboard.set(events)
+
+    return result

src/api-service/__app__/containers/function.json

@@ -16,6 +16,12 @@
       "type": "http",
       "direction": "out",
       "name": "$return"
+    },
+    {
+      "type": "signalR",
+      "direction": "out",
+      "name": "dashboard",
+      "hubName": "dashboard"
     }
   ]
-}
+}