@POST @ApiIgnore // until documented
  @Path("{componentName}")
  @Produces("text/plain")
  public Response createComponent(String body, @Context HttpHeaders headers, @Context UriInfo ui,
                                @PathParam("componentName") String componentName) {

    return handleRequest(headers, body, ui, Request.Type.POST,
        createComponentResource(m_clusterName, m_serviceName, componentName));
  }
Handles: POST /clusters/{clusterID}/services/{serviceID}/components/{componentID}
Create a specific component.

@param body          http body
@param headers       http headers
@param ui            uri info
@param componentName component id

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