Refactor codebase to by DRY

ops_bot/pagerduty.py

@@ -1,7 +1,10 @@
 import json
-from typing import Any, Tuple
+from typing import Any, List, Tuple
+
+from fastapi import Request
 
 from ops_bot.common import COLOR_ALARM, COLOR_UNKNOWN
+from ops_bot.config import RoutingKey
 
 
 def urgency_color(urgency: str) -> str:
@@ -11,7 +14,11 @@ def urgency_color(urgency: str) -> str:
         return COLOR_UNKNOWN
 
 
-def parse_pagerduty_event(payload: Any) -> Tuple[str, str]:
+async def parse_pagerduty_event(
+    route: RoutingKey,
+    payload: Any,
+    request: Request,
+) -> List[Tuple[str, str]]:
     """
     Parses a pagerduty webhook v3 event into a human readable message.
     Returns a tuple where the first item is plain text, and the second item is matrix html formatted text
@@ -37,12 +44,14 @@ def parse_pagerduty_event(payload: Any) -> Tuple[str, str]:
         else:
             color = urgency_color(urgency)
         formatted = f"<strong><font color={color}>{header_str}</font></strong> on {service_name}:  [{title}]({url})"
-        return plain, formatted
+        return [(plain, formatted)]
 
     payload_str = json.dumps(payload, sort_keys=True, indent=2)
-    return (
-        "unhandled",
-        f"""**unhandled pager duty event** (this may or may not be a critical problem, please look carefully)
+    return [
+        (
+            "unhandled",
+            f"""**unhandled pager duty event** (this may or may not be a critical problem, please look carefully)
     <pre><code class="language-json">{payload_str}</code></pre>
     """,
-    )
+        )
+    ]