Missing Request Body for Write Operation Actuator Endpoints

[mathieu-amblard]

Describe the bug
After adding springdoc.show-actuator=true, I can see all the actuator endpoints 👍 but I cannot see the Request Body field for the @WriteOperation endpoints (for example https://github.com/spring-projects/spring-boot/blob/47516b50c39bd6ea924a1f6720ce6d4a71088651/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/logging/LoggersEndpoint.java#L99).
In the following class it seems that only parameters are managed :

springdoc-openapi/springdoc-openapi-common/src/main/java/org/springdoc/core/customizers/ActuatorOpenApiCustomizer.java

Line 23 in f39b640

public class ActuatorOpenApiCustomizer implements OpenApiCustomiser {

To Reproduce
Steps to reproduce the behavior:

• What version of spring-boot you are using? Tried with 2.5.10 and 2.6.4
• What modules and versions of springdoc-openapi are you using? Tried with 1.6.2 and 1.6.6

        <dependency>
            <groupId>org.springdoc</groupId>
            <artifactId>springdoc-openapi-webmvc-core</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springdoc</groupId>
            <artifactId>springdoc-openapi-ui</artifactId>
        </dependency>

• What is the actual and the expected result using OpenAPI Description (yml or json)?

"post": {
    "tags": ["Actuator"],
    "summary": "Actuator web endpoint 'loggers-name'",
    "operationId": "loggers-name_7",
    "parameters": [{
            "name": "name",
            "in": "path",
            "required": true,
            "schema": {
                "type": "string"
            }
        }
    ],
    "responses": {...},
}

Expected behavior

• A clear and concise description of what you expected to happen.
  We expect to have the Request Body field in case of @WriteOperation if it is possible as there is not @RequestBody annotation.
• What is the expected result using OpenAPI Description (yml or json)?
  Something like this for the LoggersEndpoint :

"post": {
    "tags": ["Actuator"],
    "summary": "Actuator web endpoint 'loggers-name'",
    "operationId": "loggers-name_7",
    "parameters": [{
            "name": "name",
            "in": "path",
            "required": true,
            "schema": {
                "type": "string"
            }
        }
    ],
    "requestBody": {
        "content": {
            "application/json": {
                "schema": {
                    "type": "object",
                    "properties": {
                        "configuredLevel": {
                            "type": "string",
                            "required": true
                        }
                    }
                }
            }
        },
        "required": true
    },
    "responses": {...},
}

[bnasslahsen]

@mathieu-amblard,

I have added a fix, to handle this case out of the box.
Feel free to test with the latest SNAPSHOT and provide your feedback.

[mathieu-amblard]

I works well, thank you for the fix and for your reactivity 👍