Add host field to Post an event V2 API

.generator/schemas/v2/openapi.yaml

@@ -20219,6 +20219,13 @@ components:
           $ref: '#/components/schemas/EventPayloadAttributes'
         category:
           $ref: '#/components/schemas/EventCategory'
+        host:
+          description: Host name to associate with the event. Any tags associated
+            with the host are also applied to this event. Limited to 255 characters.
+          example: hostname
+          maxLength: 255
+          minLength: 1
+          type: string
         integration_id:
           $ref: '#/components/schemas/EventPayloadIntegrationId'
         message:
@@ -67608,6 +67615,7 @@ paths:
                           rule:
                             datacenter: devcycle.us1.prod
                       category: change
+                      host: hostname
                       integration_id: custom-events
                       message: payment_processed feature flag has been enabled
                       tags:

cassettes/v2/Events_3416228/Post-an-event-returns-Bad-request-response_947004866/frozen.json

@@ -1 +1 @@
-"2025-06-10T15:38:58.529Z"
+"2025-12-10T21:31:06.468Z"

cassettes/v2/Events_3416228/Post-an-event-returns-Bad-request-response_947004866/recording.har

@@ -8,11 +8,11 @@
     },
     "entries": [
       {
-        "_id": "b35f8f8450dc70b83d7661b05817ff7e",
+        "_id": "df20247753285206f854ba0313ce3ab1",
         "_order": 0,
         "cache": {},
         "request": {
-          "bodySize": 867,
+          "bodySize": 886,
           "cookies": [],
           "headers": [
             {
@@ -26,13 +26,13 @@
               "value": "application/json"
             }
           ],
-          "headersSize": 592,
+          "headersSize": 590,
           "httpVersion": "HTTP/1.1",
           "method": "POST",
           "postData": {
             "mimeType": "application/json",
             "params": [],
-            "text": "{\"data\":{\"attributes\":{\"aggregation_key\":\"aggregation_key_123\",\"attributes\":{\"author\":{\"name\":\"[email protected]\",\"type\":\"user\"},\"change_metadata\":{\"dd\":{\"team\":\"datadog_team\",\"user_email\":\"[email protected]\",\"user_id\":\"datadog_user_id\",\"user_name\":\"datadog_username\"},\"resource_link\":\"datadog.com/feature/fallback_payments_test\"},\"changed_resource\":{\"name\":\"fallback_payments_test\",\"type\":\"feature_flag\"},\"impacted_resources\":[{\"name\":\"payments_api\",\"type\":\"service\"}],\"new_value\":{\"enabled\":true,\"percentage\":\"50%\",\"rule\":{\"datacenter\":\"devcycle.us1.prod\"}},\"prev_value\":{\"enabled\":true,\"percentage\":\"10%\",\"rule\":{\"datacenter\":\"devcycle.us1.prod\"}}},\"category\":\"invalid\",\"integration_id\":\"custom-events\",\"message\":\"payment_processed feature flag has been enabled\",\"tags\":[\"env:api_client_test\"],\"title\":\"payment_processed feature flag updated\"},\"type\":\"event\"}}"
+            "text": "{\"data\":{\"attributes\":{\"aggregation_key\":\"aggregation_key_123\",\"attributes\":{\"author\":{\"name\":\"[email protected]\",\"type\":\"user\"},\"change_metadata\":{\"dd\":{\"team\":\"datadog_team\",\"user_email\":\"[email protected]\",\"user_id\":\"datadog_user_id\",\"user_name\":\"datadog_username\"},\"resource_link\":\"datadog.com/feature/fallback_payments_test\"},\"changed_resource\":{\"name\":\"fallback_payments_test\",\"type\":\"feature_flag\"},\"impacted_resources\":[{\"name\":\"payments_api\",\"type\":\"service\"}],\"new_value\":{\"enabled\":true,\"percentage\":\"50%\",\"rule\":{\"datacenter\":\"devcycle.us1.prod\"}},\"prev_value\":{\"enabled\":true,\"percentage\":\"10%\",\"rule\":{\"datacenter\":\"devcycle.us1.prod\"}}},\"category\":\"invalid\",\"host\":\"test-host\",\"integration_id\":\"custom-events\",\"message\":\"payment_processed feature flag has been enabled\",\"tags\":[\"env:api_client_test\"],\"title\":\"payment_processed feature flag updated\"},\"type\":\"event\"}}"
           },
           "queryString": [],
           "url": "https://event-management-intake.datadoghq.com/api/v2/events"
@@ -57,8 +57,8 @@
           "status": 400,
           "statusText": "Bad Request"
         },
-        "startedDateTime": "2025-06-10T15:38:58.757Z",
-        "time": 189
+        "startedDateTime": "2025-12-10T21:31:06.473Z",
+        "time": 204
       }
     ],
     "pages": [],

cassettes/v2/Events_3416228/Post-an-event-returns-OK-response_1209415328/frozen.json

@@ -1 +1 @@
-"2025-06-10T15:38:58.954Z"
+"2025-12-10T21:30:25.683Z"

cassettes/v2/Events_3416228/Post-an-event-returns-OK-response_1209415328/recording.har

@@ -8,11 +8,11 @@
     },
     "entries": [
       {
-        "_id": "12f2ce8ce9b919c06a471c2b7d261fb3",
+        "_id": "7b0f8268441829ad8e3e52424c7477bd",
         "_order": 0,
         "cache": {},
         "request": {
-          "bodySize": 866,
+          "bodySize": 885,
           "cookies": [],
           "headers": [
             {
@@ -32,17 +32,17 @@
           "postData": {
             "mimeType": "application/json",
             "params": [],
-            "text": "{\"data\":{\"attributes\":{\"aggregation_key\":\"aggregation_key_123\",\"attributes\":{\"author\":{\"name\":\"[email protected]\",\"type\":\"user\"},\"change_metadata\":{\"dd\":{\"team\":\"datadog_team\",\"user_email\":\"[email protected]\",\"user_id\":\"datadog_user_id\",\"user_name\":\"datadog_username\"},\"resource_link\":\"datadog.com/feature/fallback_payments_test\"},\"changed_resource\":{\"name\":\"fallback_payments_test\",\"type\":\"feature_flag\"},\"impacted_resources\":[{\"name\":\"payments_api\",\"type\":\"service\"}],\"new_value\":{\"enabled\":true,\"percentage\":\"50%\",\"rule\":{\"datacenter\":\"devcycle.us1.prod\"}},\"prev_value\":{\"enabled\":true,\"percentage\":\"10%\",\"rule\":{\"datacenter\":\"devcycle.us1.prod\"}}},\"category\":\"change\",\"integration_id\":\"custom-events\",\"message\":\"payment_processed feature flag has been enabled\",\"tags\":[\"env:api_client_test\"],\"title\":\"payment_processed feature flag updated\"},\"type\":\"event\"}}"
+            "text": "{\"data\":{\"attributes\":{\"aggregation_key\":\"aggregation_key_123\",\"attributes\":{\"author\":{\"name\":\"[email protected]\",\"type\":\"user\"},\"change_metadata\":{\"dd\":{\"team\":\"datadog_team\",\"user_email\":\"[email protected]\",\"user_id\":\"datadog_user_id\",\"user_name\":\"datadog_username\"},\"resource_link\":\"datadog.com/feature/fallback_payments_test\"},\"changed_resource\":{\"name\":\"fallback_payments_test\",\"type\":\"feature_flag\"},\"impacted_resources\":[{\"name\":\"payments_api\",\"type\":\"service\"}],\"new_value\":{\"enabled\":true,\"percentage\":\"50%\",\"rule\":{\"datacenter\":\"devcycle.us1.prod\"}},\"prev_value\":{\"enabled\":true,\"percentage\":\"10%\",\"rule\":{\"datacenter\":\"devcycle.us1.prod\"}}},\"category\":\"change\",\"host\":\"test-host\",\"integration_id\":\"custom-events\",\"message\":\"payment_processed feature flag has been enabled\",\"tags\":[\"env:api_client_test\"],\"title\":\"payment_processed feature flag updated\"},\"type\":\"event\"}}"
           },
           "queryString": [],
           "url": "https://event-management-intake.datadoghq.com/api/v2/events"
         },
         "response": {
-          "bodySize": 191,
+          "bodySize": 218,
           "content": {
             "mimeType": "application/json",
-            "size": 191,
-            "text": "{\"data\":{\"attributes\":{\"attributes\":{\"evt\":{\"uid\":\"AZdafqaTAACKG_iMQ82pmAAA\"}}},\"id\":\"_\",\"type\":\"event\"},\"links\":{\"self\":\"https://app.datadoghq.com/event/event?uid=AZdafqaTAACKG_iMQ82pmAAA\"}}"
+            "size": 218,
+            "text": "{\"data\":{\"attributes\":{\"attributes\":{\"evt\":{\"id\":\"8407723285051133019\",\"uid\":\"AZsKLCxvAACrUQTfNDwMWwAA\"}}},\"id\":\"_\",\"type\":\"event\"},\"links\":{\"self\":\"https://app.datadoghq.com/event/event?uid=AZsKLCxvAACrUQTfNDwMWwAA\"}}"
           },
           "cookies": [],
           "headers": [
@@ -57,8 +57,8 @@
           "status": 202,
           "statusText": "Accepted"
         },
-        "startedDateTime": "2025-06-10T15:38:58.956Z",
-        "time": 212
+        "startedDateTime": "2025-12-10T21:30:25.687Z",
+        "time": 1083
       }
     ],
     "pages": [],

features/v2/events.feature

@@ -74,14 +74,14 @@ Feature: Events
   @team:DataDog/event-management
   Scenario: Post an event returns "Bad request" response
     Given new "CreateEvent" request
-    And body with value {"data": {"attributes": {"aggregation_key": "aggregation_key_123", "attributes": {"author": {"name": "[email protected]", "type": "user"}, "change_metadata": {"dd": {"team": "datadog_team", "user_email": "[email protected]", "user_id": "datadog_user_id", "user_name": "datadog_username"}, "resource_link": "datadog.com/feature/fallback_payments_test"}, "changed_resource": {"name": "fallback_payments_test", "type": "feature_flag"}, "impacted_resources": [{"name": "payments_api", "type": "service"}], "new_value": {"enabled": true, "percentage": "50%", "rule": {"datacenter": "devcycle.us1.prod"}}, "prev_value": {"enabled": true, "percentage": "10%", "rule": {"datacenter": "devcycle.us1.prod"}}}, "category": "invalid", "integration_id": "custom-events", "message": "payment_processed feature flag has been enabled", "tags": ["env:api_client_test"], "title": "payment_processed feature flag updated"}, "type": "event"}}
+    And body with value {"data": {"attributes": {"aggregation_key": "aggregation_key_123", "attributes": {"author": {"name": "[email protected]", "type": "user"}, "change_metadata": {"dd": {"team": "datadog_team", "user_email": "[email protected]", "user_id": "datadog_user_id", "user_name": "datadog_username"}, "resource_link": "datadog.com/feature/fallback_payments_test"}, "changed_resource": {"name": "fallback_payments_test", "type": "feature_flag"}, "impacted_resources": [{"name": "payments_api", "type": "service"}], "new_value": {"enabled": true, "percentage": "50%", "rule": {"datacenter": "devcycle.us1.prod"}}, "prev_value": {"enabled": true, "percentage": "10%", "rule": {"datacenter": "devcycle.us1.prod"}}}, "category": "invalid", "integration_id": "custom-events", "host": "test-host", "message": "payment_processed feature flag has been enabled", "tags": ["env:api_client_test"], "title": "payment_processed feature flag updated"}, "type": "event"}}
     When the request is sent
     Then the response status is 400 Bad request
 
   @skip-validation @team:DataDog/event-management
   Scenario: Post an event returns "OK" response
     Given new "CreateEvent" request
-    And body with value {"data": {"attributes": {"aggregation_key": "aggregation_key_123", "attributes": {"author": {"name": "[email protected]", "type": "user"}, "change_metadata": {"dd": {"team": "datadog_team", "user_email": "[email protected]", "user_id": "datadog_user_id", "user_name": "datadog_username"}, "resource_link": "datadog.com/feature/fallback_payments_test"}, "changed_resource": {"name": "fallback_payments_test", "type": "feature_flag"}, "impacted_resources": [{"name": "payments_api", "type": "service"}], "new_value": {"enabled": true, "percentage": "50%", "rule": {"datacenter": "devcycle.us1.prod"}}, "prev_value": {"enabled": true, "percentage": "10%", "rule": {"datacenter": "devcycle.us1.prod"}}}, "category": "change", "integration_id": "custom-events", "message": "payment_processed feature flag has been enabled", "tags": ["env:api_client_test"], "title": "payment_processed feature flag updated"}, "type": "event"}}
+    And body with value {"data": {"attributes": {"aggregation_key": "aggregation_key_123", "attributes": {"author": {"name": "[email protected]", "type": "user"}, "change_metadata": {"dd": {"team": "datadog_team", "user_email": "[email protected]", "user_id": "datadog_user_id", "user_name": "datadog_username"}, "resource_link": "datadog.com/feature/fallback_payments_test"}, "changed_resource": {"name": "fallback_payments_test", "type": "feature_flag"}, "impacted_resources": [{"name": "payments_api", "type": "service"}], "new_value": {"enabled": true, "percentage": "50%", "rule": {"datacenter": "devcycle.us1.prod"}}, "prev_value": {"enabled": true, "percentage": "10%", "rule": {"datacenter": "devcycle.us1.prod"}}}, "category": "change", "integration_id": "custom-events", "host": "test-host", "message": "payment_processed feature flag has been enabled", "tags": ["env:api_client_test"], "title": "payment_processed feature flag updated"}, "type": "event"}}
     When the request is sent
     Then the response status is 202 OK
     And the response "data.type" is equal to "event"

services/events/src/v2/models/EventPayload.ts

@@ -20,6 +20,10 @@ export class EventPayload {
    * Event category identifying the type of event.
    */
   "category": EventCategory;
+  /**
+   * Host name to associate with the event. Any tags associated with the host are also applied to this event. Limited to 255 characters.
+   */
+  "host"?: string;
   /**
    * Integration ID sourced from integration manifests.
    */
@@ -66,6 +70,10 @@ export class EventPayload {
       type: "EventCategory",
       required: true,
     },
+    host: {
+      baseName: "host",
+      type: "string",
+    },
     integrationId: {
       baseName: "integration_id",
       type: "EventPayloadIntegrationId",