Enable @openapi:ResourceInfo annotation for service contract type

module-ballerina-openapi/annotation.bal

@@ -100,7 +100,7 @@ public type Examples readonly & record {|
 |};
 
 # Annotation for additional OpenAPI information of a Ballerina resource function.
-public const annotation ResourceInformation ResourceInfo on object function;
+public const annotation ResourceInformation ResourceInfo on object function, object field;
 
 # Annotation for additional OpenAPI information of a Ballerina service.
 public annotation ServiceInformation ServiceInfo on service, type;

openapi-integration-tests/src/test/java/io/ballerina/openapi/cmd/BallerinaToOpenAPITests.java

@@ -209,6 +209,13 @@ public void openapiServiceConfigForServiceContractType() throws IOException, Int
                 "project_openapi_info_with_service_contract_type/result.yaml", true);
     }
 
+    @Test(description = "Generate openapi for service contract type with resourceInfo annotation")
+    public void openapiResourceConfigForServiceContractType() throws IOException, InterruptedException {
+        executeCommand("project_resource_info_with_service_contract_type/service_file.bal",
+                "v1_openapi.yaml",
+                "project_resource_info_with_service_contract_type/result.yaml", true);
+    }
+
     @AfterClass
     public void cleanUp() throws IOException {
         TestUtil.cleanDistribution();

openapi-integration-tests/src/test/resources/ballerina_sources/project_resource_info_with_service_contract_type/Ballerina.toml

@@ -0,0 +1,4 @@
+[package]
+org= "ballerina"
+name= "service_contract"
+version= "2.0.0"

openapi-integration-tests/src/test/resources/ballerina_sources/project_resource_info_with_service_contract_type/result.yaml

@@ -0,0 +1,83 @@
+openapi: 3.0.1
+info:
+  title: V1
+  version: 2.0.0
+servers:
+  - url: "http://{server}:{port}/v1"
+    variables:
+      server:
+        default: localhost
+      port:
+        default: "8080"
+paths:
+  /user:
+    post:
+      tags:
+        - user
+      operationId: postUser
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/User'
+            examples:
+              user01:
+                value:
+                  id: "123"
+                  name: Jessica
+        required: true
+      responses:
+        "201":
+          description: Created
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/User'
+              examples:
+                Jessica:
+                  value:
+                    id: "123"
+                    name: Jessica
+        "400":
+          description: BadRequest
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ErrorPayload'
+components:
+  schemas:
+    ErrorPayload:
+      required:
+        - message
+        - method
+        - path
+        - reason
+        - status
+        - timestamp
+      type: object
+      properties:
+        timestamp:
+          type: string
+        status:
+          type: integer
+          format: int64
+        reason:
+          type: string
+        message:
+          type: string
+        path:
+          type: string
+        method:
+          type: string
+    User:
+      required:
+        - id
+        - name
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+      additionalProperties: false

openapi-integration-tests/src/test/resources/ballerina_sources/project_resource_info_with_service_contract_type/service_file.bal

@@ -0,0 +1,58 @@
+// Copyright (c) 2024, WSO2 LLC. (http://www.wso2.com).
+//
+// WSO2 LLC. licenses this file to you under the Apache License,
+// Version 2.0 (the "License"); you may not use this file except
+// in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import ballerina/http;
+import ballerina/openapi;
+
+@http:ServiceConfig {basePath: "/v1"}
+type OASServiceType service object {
+    *http:ServiceContract;
+    @openapi:ResourceInfo {
+        tags: ["user"],
+        examples: {
+            response: {
+                "201": {
+                    "examples": {
+                        "application/json": {
+                            "Jessica": {
+                                "value": {
+                                    "id" : "123",
+                                    "name": "Jessica"
+                                }
+                            }
+                        }
+                    }
+                }
+            },
+            requestBody: {
+                "application/json": {
+                    "user01": {
+                        "value": {
+                            "id": "123",
+                            "name": "Jessica"
+                        }
+                    }
+                }
+            }
+        }
+    }
+    resource function post user(User user) returns User;
+};
+
+public type User record {|
+    int id;
+    string name;
+|};