opensearch-project#844 Adding spec for UBI.

Signed-off-by: jzonthemtn <[email protected]>

Author: jzonthemtn

.github/workflows/test-spec.yml

@@ -59,6 +59,8 @@ jobs:
             tests: plugins/knn
           - version: 2.19.0
             tests: plugins/learning_to_rank
+          - version: 2.19.0
+            tests: plugins/user_behavior_insights
           - version: 2.19.0
             tests: plugins/security
             cert: tests/plugins/security/.kirk.pem

CHANGELOG.md

@@ -6,6 +6,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### Added
 
+- Added specs for UBI plugin endpoints ([#844](https://github.com/opensearch-project/opensearch-api-specification/pull/844))
 - Added defaults for Snapshot APIs ([#830](https://github.com/opensearch-project/opensearch-api-specification/pull/830))
 - Added specs for LTR plugin for stats endpoints ([#786](https://github.com/opensearch-project/opensearch-api-specification/issues/786/))
 - Added defaults for Cluster APIs ([#824](https://github.com/opensearch-project/opensearch-api-specification/pull/824/))

spec/namespaces/ubi.yaml

@@ -0,0 +1,23 @@
+openapi: 3.1.0
+info:
+  title: OpenSearch UBI API
+  description: OpenSearch UBI API.
+  version: 1.0.0
+paths:
+  /_plugins/ubi/initialize:
+    get:
+      operationId: ubi.initialize.0
+      x-operation-group: ubi.initialize
+      x-version-added: '1.0'
+      description: Initializes the UBI indexes.
+      responses:
+        '200':
+          $ref: '#/components/responses/ubi.initialize@200'
+
+components:
+  responses:
+    ubi.initialize@200:
+      content:
+        application/json:
+          schema:
+            $ref: '../schemas/ubi._common.yaml#/components/schemas/Initialize'

spec/schemas/ubi._common.yaml

@@ -0,0 +1,13 @@
+openapi: 3.1.0
+info:
+  title: Schemas of `ubi._common` Category
+  description: Schemas of `ubi._common` category.
+  version: 1.0.0
+paths: {}
+components:
+  schemas:
+    Initialize:
+      type: object
+      properties:
+        message:
+          type: string