traefik/web.go

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package main
import (
"github.com/gorilla/mux"
"net/http"
"os"
"github.com/gorilla/handlers"
"github.com/unrolled/render"
"fmt"
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"io/ioutil"
"encoding/json"
"log"
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)
var renderer = render.New()
type WebProvider struct {
Address string
}
type Page struct {
Configuration Configuration
}
func (provider *WebProvider) Provide(configurationChan chan<- *Configuration){
systemRouter := mux.NewRouter()
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systemRouter.Methods("GET").PathPrefix("/web/").Handler(handlers.CombinedLoggingHandler(os.Stdout, http.HandlerFunc(GetHtmlConfigHandler)))
systemRouter.Methods("GET").PathPrefix("/api/").Handler(handlers.CombinedLoggingHandler(os.Stdout, http.HandlerFunc(GetConfigHandler)))
systemRouter.Methods("POST").PathPrefix("/api/").Handler(handlers.CombinedLoggingHandler(os.Stdout, http.HandlerFunc(
func(rw http.ResponseWriter, r *http.Request){
configuration := new(Configuration)
b, _ := ioutil.ReadAll(r.Body)
err:= json.Unmarshal(b, configuration)
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if (err == nil) {
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configurationChan <- configuration
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GetConfigHandler(rw, r)
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}else{
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log.Printf("Error parsing configuration %+v\n", err)
http.Error(rw, fmt.Sprintf("%+v", err), http.StatusBadRequest)
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}
})))
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systemRouter.PathPrefix("/static/").Handler(http.StripPrefix("/static/", http.FileServer(http.Dir("static/"))))
go http.ListenAndServe(provider.Address, systemRouter)
}
func GetConfigHandler(rw http.ResponseWriter, r *http.Request) {
renderer.JSON(rw, http.StatusOK, currentConfiguration)
}
func GetHtmlConfigHandler(response http.ResponseWriter, request *http.Request) {
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renderer.HTML(response, http.StatusOK, "configuration", Page{Configuration:*currentConfiguration})
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}