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server.go
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server.go
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package main
import (
"log"
"net/http"
"net/http/httputil"
"net/url"
"github.com/codegangsta/negroni"
"github.com/essentier/spickspan"
"github.com/gorilla/mux"
)
func main() {
router := initRoutes()
n := negroni.Classic()
n.UseHandler(router)
log.Printf("Listening on port 8087")
log.Fatal(http.ListenAndServe(":8087", n))
}
func initRoutes() *mux.Router {
provider, err := spickspan.GetDefaultServiceProvider()
if err != nil {
log.Fatalf("Could not resolve spickspan provider. The error is %v", err)
return nil
}
todoService, err := spickspan.GetHttpService(provider, "todo-example", "/todos")
if err != nil {
log.Fatalf("Could not get the todo service. The error is %v", err)
return nil
}
helloService, err := spickspan.GetHttpService(provider, "hello-example", "/hello")
if err != nil {
log.Fatalf("Could not get the hello service. The error is %v", err)
return nil
}
router := mux.NewRouter()
setReverseProxyRoutes(router, todoService.GetUrl(), "/todo-example/")
setReverseProxyRoutes(router, helloService.GetUrl(), "/hello-example/")
return router
}
func setReverseProxyRoutes(router *mux.Router, targetUrl string, prefix string, handlers ...negroni.Handler) {
target, err := url.Parse(targetUrl)
if err != nil {
log.Fatal(err)
}
targetHandler := negroni.Wrap(http.StripPrefix(prefix, httputil.NewSingleHostReverseProxy(target)))
allHandlers := append(handlers, targetHandler)
router.Handle(prefix+"{rest:.*}", negroni.New(allHandlers...))
}