webhooks/sentry: Improve message formatting and punctuation.

zerver/webhooks/sentry/tests.py

@@ -8,7 +8,14 @@ class SentryHookTests(WebhookTestCase):
 
     def test_error_issue_message(self) -> None:
         expected_topic = u"zulip"
-        expected_message = u"New ERROR [issue](https://sentry.io/zulip/zulip/issues/156699934/): This is an example python exception."
+        expected_message = """
+New [issue](https://sentry.io/zulip/zulip/issues/156699934/) (level: ERROR):
+
+``` quote
+This is an example python exception
+```
+""".strip()
+
         self.send_and_test_stream_message(
             'exception_message',
             expected_topic,

zerver/webhooks/sentry/view.py

@@ -9,13 +9,24 @@ from zerver.lib.response import json_success
 from zerver.lib.webhooks.common import check_send_webhook_message
 from zerver.models import UserProfile
 
+MESSAGE_TEMPLATE = """
+New [issue]({url}) (level: {level}):
+
+``` quote
+{message}
+```
+""".strip()
+
 @api_key_only_webhook_view('Sentry')
 @has_request_variables
 def api_sentry_webhook(request: HttpRequest, user_profile: UserProfile,
                        payload: Dict[str, Any] = REQ(argument_type='body')) -> HttpResponse:
     subject = "{}".format(payload.get('project_name'))
-    body = "New {} [issue]({}): {}.".format(payload['level'].upper(),
-                                            payload.get('url'),
-                                            payload.get('message'))
+    body = MESSAGE_TEMPLATE.format(
+        level=payload['level'].upper(),
+        url=payload.get('url'),
+        message=payload.get('message')
+    )
+
     check_send_webhook_message(request, user_profile, subject, body)
     return json_success()