// NewService creates and returns a new Service, initalized with a new
// restful.WebService configured with a route that dispatches to the supplied
// handler. The new Service must be registered before accepting traffic by
// calling Register.
func NewService(handler restful.RouteFunction) *Service {
restful.EnableTracing(true)
webService := new(restful.WebService)
webService.Consumes(restful.MIME_JSON, restful.MIME_XML)
webService.Produces(restful.MIME_JSON, restful.MIME_XML)
webService.Route(webService.POST("/expand").To(handler).
Doc("Expand a template.").
Reads(&expander.Template{}))
return &Service{webService}
}
// NewService encapsulates code to open an HTTP server on the given address:port that serves the
// expansion API using the given Expander backend to do the actual expansion. After calling
// NewService, call ListenAndServe to start the returned service.
func NewService(address string, port int, backend Expander) *Service {
restful.EnableTracing(true)
webService := new(restful.WebService)
webService.Consumes(restful.MIME_JSON)
webService.Produces(restful.MIME_JSON)
handler := func(req *restful.Request, resp *restful.Response) {
util.LogHandlerEntry("expansion service", req.Request)
request := &ServiceRequest{}
if err := req.ReadEntity(&request); err != nil {
badRequest(resp, err.Error())
return
}
reqMsg := fmt.Sprintf("\nhandling request:\n%s\n", util.ToYAMLOrError(request))
util.LogHandlerText("expansion service", reqMsg)
response, err := backend.ExpandChart(request)
if err != nil {
badRequest(resp, fmt.Sprintf("error expanding chart: %s", err))
return
}
util.LogHandlerExit("expansion service", http.StatusOK, "OK", resp.ResponseWriter)
respMsg := fmt.Sprintf("\nreturning response:\n%s\n", util.ToYAMLOrError(response.Resources))
util.LogHandlerText("expansion service", respMsg)
resp.WriteEntity(response)
}
webService.Route(
webService.POST("/expand").
To(handler).
Doc("Expand a chart.").
Reads(&ServiceRequest{}).
Writes(&ServiceResponse{}))
container := restful.DefaultContainer
container.Add(webService)
server := &http.Server{
Addr: fmt.Sprintf("%s:%d", address, port),
Handler: container,
}
return &Service{
webService: webService,
server: server,
container: container,
}
}