@POST
   @Produces(MediaType.TEXT_PLAIN)
   @ApiOperation(value = "Creates a setting")
   @ApiImplicitParams({
     @ApiImplicitParam(dataType = SETTING_REQUEST_TYPE, paramType = PARAM_TYPE_BODY, required = true)
   })
   @ApiResponses({
     @ApiResponse(code = HttpStatus.SC_CREATED, message = MSG_SUCCESSFUL_OPERATION),
     @ApiResponse(code = HttpStatus.SC_ACCEPTED, message = MSG_REQUEST_ACCEPTED),
     @ApiResponse(code = HttpStatus.SC_BAD_REQUEST, message = MSG_INVALID_ARGUMENTS),
     @ApiResponse(code = HttpStatus.SC_NOT_FOUND, message = MSG_CLUSTER_NOT_FOUND),
     @ApiResponse(code = HttpStatus.SC_CONFLICT, message = MSG_RESOURCE_ALREADY_EXISTS),
     @ApiResponse(code = HttpStatus.SC_UNAUTHORIZED, message = MSG_NOT_AUTHENTICATED),
     @ApiResponse(code = HttpStatus.SC_FORBIDDEN, message = MSG_PERMISSION_DENIED),
     @ApiResponse(code = HttpStatus.SC_INTERNAL_SERVER_ERROR, message = MSG_SERVER_ERROR),
   })
   public Response createSetting(String body, @Context HttpHeaders headers, @Context UriInfo ui) {
     ResourceInstance resource = createSettingResource(null);
     return handleRequest(headers, body, ui, Request.Type.POST, resource);
  }
Handles: POST /settings
Create a specific setting.

@param headers      http headers
@param ui           uri info

@return information regarding the created setting
ambari-server/src/main/java/org/apache/ambari/server/api/services/SettingService.java