feat: implement HTTP event sink (#2116)

* feat: implement HTTP event sink

* Update events/event_sink.py

---------

Co-authored-by: Adrià Casajús <acasajus@users.noreply.github.com>

app/config.py

@@ -583,3 +583,6 @@ UPCLOUD_DB_ID = os.environ.get("UPCLOUD_DB_ID", None)
 STORE_TRANSACTIONAL_EMAILS = "STORE_TRANSACTIONAL_EMAILS" in os.environ
 
 EVENT_WEBHOOK = os.environ.get("EVENT_WEBHOOK", None)
+
+# We want it disabled by default, so only skip if defined
+EVENT_WEBHOOK_SKIP_VERIFY_SSL = "EVENT_WEBHOOK_SKIP_VERIFY_SSL" in os.environ

event_listener.py

@@ -3,9 +3,10 @@ from enum import Enum
 from sys import argv, exit
 
 from app.config import DB_URI
+from app.log import LOG
 from events.runner import Runner
 from events.event_source import DeadLetterEventSource, PostgresEventSource
-from events.event_sink import ConsoleEventSink
+from events.event_sink import ConsoleEventSink, HttpEventSink
 
 
 class Mode(Enum):
@@ -24,16 +25,20 @@ class Mode(Enum):
 
 def main(mode: Mode, dry_run: bool):
     if mode == Mode.DEAD_LETTER:
+        LOG.i("Using DeadLetterEventSource")
         source = DeadLetterEventSource()
     elif mode == Mode.LISTENER:
+        LOG.i("Using PostgresEventSource")
         source = PostgresEventSource(DB_URI)
     else:
         raise ValueError(f"Invalid mode: {mode}")
 
     if dry_run:
+        LOG.i("Starting with ConsoleEventSink")
         sink = ConsoleEventSink()
     else:
-        sink = ConsoleEventSink()
+        LOG.i("Starting with HttpEventSink")
+        sink = HttpEventSink()
 
     runner = Runner(source=source, sink=sink)
     runner.run()

events/event_sink.py

@@ -1,4 +1,7 @@
+import requests
+
 from abc import ABC, abstractmethod
+from app.config import EVENT_WEBHOOK, EVENT_WEBHOOK_SKIP_VERIFY_SSL
 from app.log import LOG
 from app.models import SyncEvent
 
@@ -11,7 +14,23 @@ class EventSink(ABC):
 
 class HttpEventSink(EventSink):
     def process(self, event: SyncEvent):
-        pass
+        if not EVENT_WEBHOOK:
+            LOG.warning("Skipping sending event because there is no webhook configured")
+            return
+        LOG.info(f"Sending event {event.id} to {EVENT_WEBHOOK}")
+
+        res = requests.post(
+            url=EVENT_WEBHOOK,
+            data=event.content,
+            headers={"Content-Type": "application/x-protobuf"},
+            verify=not EVENT_WEBHOOK_SKIP_VERIFY_SSL,
+        )
+        if res.status_code != 200:
+            LOG.warning(
+                f"Failed to send event to webhook: {res.status_code} {res.text}"
+            )
+        else:
+            LOG.info(f"Event {event.id} sent successfully to webhook")
 
 
 class ConsoleEventSink(EventSink):