newrelic: ids are uuids, not integers.

The previous fixtures were not generated from New Relic directly, so
incorrectly implied that `id` was an integer.  See the examples for
`issueId` in their documentation[^1].

[^1]: https://docs.newrelic.com/docs/alerts-applied-intelligence/notifications/message-templates/

zerver/webhooks/newrelic/fixtures/incident_acknowledged_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "3576f543-dc3c-4d97-9f16-5c81f35195cb",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/fixtures/incident_active_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "8ceed342-f305-4bfa-adb8-97ba93f5dd26",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/fixtures/incident_closed_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "f0d98b28-bf9d-49e7-b9d0-ac7cbb52e73a",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/fixtures/incident_created_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "8114ada3-572e-4550-a310-12375371669e",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/fixtures/incident_default_fields_new.json

@@ -1,5 +1,5 @@
 {
-    "id": 1234,
+    "id": "e04156e4-4cac-4f39-9d27-75d361e40a6d",
     "createdAt": 1605133931151,
     "state": "activated"
 }

zerver/webhooks/newrelic/fixtures/incident_malformatted_time_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "3881eb6c-6d57-447e-beaf-b2f610f014b0",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/fixtures/incident_missing_state_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "279751d5-8ad8-41d4-adb8-9e895c58b606",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/fixtures/incident_missing_timestamp_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "6eba9b54-898f-43eb-8892-e41ddca4a10f",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/fixtures/incident_state_not_recognized_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "1d1fff5c-c723-4bf6-8458-bc63b253279e",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/fixtures/incident_time_too_large_new.json

@@ -1,6 +1,6 @@
 {
     "incident_acknowledge_url": "https://alerts.newrelic.com/accounts/2941966/incidents/1234/acknowledge",
-    "id": 1234,
+    "id": "37d07862-e156-480f-86f9-7e8e9b7ed4f4",
     "details": "Violation description test.",
     "alertPolicyNames": ["Test policy name"],
     "condition_name": "Server Down",

zerver/webhooks/newrelic/tests.py

@@ -131,7 +131,7 @@ No details.
     # corresponding json fixtures have "_new" trailing in the name
 
     def test_activated_new(self) -> None:
-        expected_topic = "Test policy name (1234)"
+        expected_topic = "Test policy name (8ceed342-f305-4bfa-adb8-97ba93f5dd26)"
         expected_message = """
 [Incident](https://alerts.newrelic.com/accounts/2941966/incidents/1234) **active** for condition: **Server Down** at <time:2020-11-11 22:32:11.151000+00:00>
 ``` quote
@@ -147,7 +147,7 @@ Violation description test.
         )
 
     def test_created_new(self) -> None:
-        expected_topic = "Test policy name (1234)"
+        expected_topic = "Test policy name (8114ada3-572e-4550-a310-12375371669e)"
         expected_message = """
 [Incident](https://alerts.newrelic.com/accounts/2941966/incidents/1234) **created** for condition: **Server Down**
 """.strip()
@@ -160,7 +160,7 @@ Violation description test.
         )
 
     def test_closed_new(self) -> None:
-        expected_topic = "Test policy name (1234)"
+        expected_topic = "Test policy name (f0d98b28-bf9d-49e7-b9d0-ac7cbb52e73a)"
         expected_message = """
 [Incident](https://alerts.newrelic.com/accounts/2941966/incidents/1234) **closed** for condition: **Server Down**
 """.strip()
@@ -173,7 +173,7 @@ Violation description test.
         )
 
     def test_acknowledged_new(self) -> None:
-        expected_topic = "Test policy name (1234)"
+        expected_topic = "Test policy name (3576f543-dc3c-4d97-9f16-5c81f35195cb)"
         expected_message = """
 [Incident](https://alerts.newrelic.com/accounts/2941966/incidents/1234) **acknowledged** by **Alice** for condition: **Server Down**
 """.strip()
@@ -199,7 +199,7 @@ Violation description test.
         )
 
     def test_missing_fields_new(self) -> None:
-        expected_topic = "Unknown Policy (1234)"
+        expected_topic = "Unknown Policy (e04156e4-4cac-4f39-9d27-75d361e40a6d)"
         expected_message = """
 [Incident](https://alerts.newrelic.com) **active** for condition: **Unknown condition** at <time:2020-11-11 22:32:11.151000+00:00>
 ``` quote

zerver/webhooks/newrelic/view.py

@@ -12,6 +12,7 @@ from zerver.lib.validator import (
     check_list,
     check_none_or,
     check_string,
+    check_string_fixed_length,
     check_union,
     to_wild_value,
 )
@@ -59,7 +60,7 @@ def api_newrelic_webhook(
 ) -> HttpResponse:
     # Handle old format
     # Once old is EOLed, delete if block and keep else block
-    if not payload.get("id").tame(check_none_or(check_int)):
+    if not payload.get("id").tame(check_none_or(check_string_fixed_length(36))):
         info = {
             "condition_name": payload.get("condition_name", "Unknown condition").tame(check_string),
             "details": payload.get("details", "No details.").tame(check_string),
@@ -160,9 +161,7 @@ def api_newrelic_webhook(
             policy_names_str = "Unknown Policy"
         topic_info = {
             "policy_name": policy_names_str,
-            "incident_id": payload.get("id", "Unknown ID").tame(
+            "incident_id": payload.get("id", "Unknown ID").tame(check_string),
-                check_union([check_string, check_int])
-            ),
         }
         topic = TOPIC_TEMPLATE.format(**topic_info)