/
init.go
84 lines (66 loc) · 2.01 KB
/
init.go
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package rest
import (
"net/http"
"sort"
"github.com/ottemo/commerce/api"
"github.com/ottemo/commerce/env"
"github.com/julienschmidt/httprouter"
)
// init performs the package self-initialization routine
func init() {
var _ api.InterfaceApplicationContext = new(DefaultRestApplicationContext)
instance := new(DefaultRestService)
if err := api.RegisterRestService(instance); err != nil {
_ = env.ErrorDispatch(err)
}
env.RegisterOnConfigIniStart(instance.startup)
}
// service pre-initialization stuff
func (it *DefaultRestService) startup() error {
it.ListenOn = ":3000"
if iniConfig := env.GetIniConfig(); iniConfig != nil {
if iniValue := iniConfig.GetValue("rest.listenOn", it.ListenOn); iniValue != "" {
it.ListenOn = iniValue
}
}
it.Router = httprouter.New()
it.Router.PanicHandler = func(w http.ResponseWriter, r *http.Request, params interface{}) {
w.WriteHeader(http.StatusNotFound)
if _, err := w.Write([]byte("page not found")); err != nil {
_ = env.ErrorDispatch(err)
}
}
it.Router.GET("/", it.rootPageHandler)
if err := api.OnRestServiceStart(); err != nil {
_ = env.ErrorDispatch(err)
}
return nil
}
// rootPageHandler Display a list of the registered endpoints
func (it *DefaultRestService) rootPageHandler(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
newline := []byte("\n")
w.Header().Add("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
if _, err := w.Write([]byte("Ottemo REST API:")); err != nil {
_ = env.ErrorDispatch(err)
}
if _, err := w.Write(newline); err != nil {
_ = env.ErrorDispatch(err)
}
if _, err := w.Write([]byte("----")); err != nil {
_ = env.ErrorDispatch(err)
}
if _, err := w.Write(newline); err != nil {
_ = env.ErrorDispatch(err)
}
// sorting handlers before output
sort.Strings(it.Handlers)
for _, handlerPath := range it.Handlers {
if _, err := w.Write([]byte(handlerPath)); err != nil {
_ = env.ErrorDispatch(err)
}
if _, err := w.Write(newline); err != nil {
_ = env.ErrorDispatch(err)
}
}
}