Mappings actuator should add "Produces" - Media type information

[hananiel]

To support App Live view, need to add a "Produces" field that reports the MediaType. Refer to the SpringBoot implementation to match it closely if possible.

[hananiel]

After investigation, the produces field on a spring boot app falls under the "details" section. The ALV team will adjust for this difference, since the rest of the "details" section is not applicable to dotnet apps.

[TimHess]

I can't tell from the original issue or the comment update: does the mappings actuator already include similar detail of what media type is supported for any given endpoint in a different location or way? Is that information needed?

[hananiel]

from a springboot app:

"dispatcherServlets": {
  "dispatcherServlet": [
     {
    "handler": "Actuator web endpoint 'configprops'",
    "predicate": "{GET [/actuator/configprops], produces [application/vnd.spring-boot.actuator.v3+json || application/vnd.spring-boot.actuator.v2+json || application/json]}",
      "details": {
        "handlerMethod": {
              "className": "org.springframework.boot.actuate.endpoint.web.servlet.AbstractWebMvcEndpointHandlerMapping.OperationHandler",
              "name": "handle",
              "descriptor": "(Ljavax/servlet/http/HttpServletRequest;Ljava/util/Map;)Ljava/lang/Object;"
               },
        "requestMappingConditions": {
              "consumes": [],
              "headers": [],
              "methods": [ "GET" ],
              "params": [],
              "patterns": [ "/actuator/configprops" ],
              "produces": [
                 { "mediaType": "application/vnd.spring-boot.actuator.v3+json", "negated": false },
                 { "mediaType": "application/vnd.spring-boot.actuator.v2+json", "negated": false },
                 { "mediaType": "application/json", "negated": false }
                 ]
                }
         }
   },
...

Steeltoe App:

"contexts": {
"application": {
"mappings": {
"dispatcherServlets": {
"Steeltoe.Actuators.Controllers.EmployeeController": [
{
"handler": "System.Collections.Generic.IEnumerable`1[Steeltoe.Actuators.Models.Employee] Get()",
"predicate": "{[api/Employee],methods=[GET],produces=[text/plain || application/json || text/json]}"
},

[hananiel]

Note the produces section is already available but at the predicate level.