113 lines
3.8 KiB
Go
113 lines
3.8 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"github.com/elazarl/go-bindata-assetfs"
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"github.com/gorilla/mux"
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"io/ioutil"
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"net/http"
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)
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type WebProvider struct {
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Address string
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}
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type Page struct {
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Configuration Configuration
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}
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func (provider *WebProvider) Provide(configurationChan chan<- *Configuration) {
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systemRouter := mux.NewRouter()
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systemRouter.Methods("GET").Path("/").Handler(http.HandlerFunc(GetHtmlConfigHandler))
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systemRouter.Methods("GET").Path("/health").Handler(http.HandlerFunc(GetHealthHandler))
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systemRouter.Methods("GET").Path("/api").Handler(http.HandlerFunc(GetConfigHandler))
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systemRouter.Methods("PUT").Path("/api").Handler(http.HandlerFunc(
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func(rw http.ResponseWriter, r *http.Request) {
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configuration := new(Configuration)
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b, _ := ioutil.ReadAll(r.Body)
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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.Error("Error parsing configuration %+v\n", err)
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http.Error(rw, fmt.Sprintf("%+v", err), http.StatusBadRequest)
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}
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}))
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systemRouter.Methods("GET").Path("/api/backends").Handler(http.HandlerFunc(GetBackendsHandler))
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systemRouter.Methods("GET").Path("/api/backends/{backend}").Handler(http.HandlerFunc(GetBackendHandler))
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systemRouter.Methods("GET").Path("/api/backends/{backend}/servers").Handler(http.HandlerFunc(GetServersHandler))
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systemRouter.Methods("GET").Path("/api/backends/{backend}/servers/{server}").Handler(http.HandlerFunc(GetServerHandler))
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systemRouter.Methods("GET").Path("/api/frontends").Handler(http.HandlerFunc(GetFrontendsHandler))
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systemRouter.Methods("GET").Path("/api/frontends/{frontend}").Handler(http.HandlerFunc(GetFrontendHandler))
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systemRouter.Methods("GET").PathPrefix("/static/").Handler(http.StripPrefix("/static/", http.FileServer(&assetfs.AssetFS{Asset: Asset, AssetDir: AssetDir, Prefix: "static"})))
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go http.ListenAndServe(provider.Address, systemRouter)
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}
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func GetConfigHandler(rw http.ResponseWriter, r *http.Request) {
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templatesRenderer.JSON(rw, http.StatusOK, currentConfiguration)
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}
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func GetHtmlConfigHandler(response http.ResponseWriter, request *http.Request) {
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templatesRenderer.HTML(response, http.StatusOK, "configuration", Page{Configuration: *currentConfiguration})
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}
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func GetHealthHandler(rw http.ResponseWriter, r *http.Request) {
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templatesRenderer.JSON(rw, http.StatusOK, metrics.Data())
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}
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func GetBackendsHandler(rw http.ResponseWriter, r *http.Request) {
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templatesRenderer.JSON(rw, http.StatusOK, currentConfiguration.Backends)
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}
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func GetBackendHandler(rw http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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id := vars["backend"]
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if backend, ok := currentConfiguration.Backends[id]; ok {
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templatesRenderer.JSON(rw, http.StatusOK, backend)
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}else{
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http.NotFound(rw, r)
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}
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}
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func GetFrontendsHandler(rw http.ResponseWriter, r *http.Request) {
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templatesRenderer.JSON(rw, http.StatusOK, currentConfiguration.Frontends)
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}
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func GetFrontendHandler(rw http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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id := vars["frontend"]
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if frontend, ok := currentConfiguration.Frontends[id]; ok {
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templatesRenderer.JSON(rw, http.StatusOK, frontend)
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}else{
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http.NotFound(rw, r)
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}
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}
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func GetServersHandler(rw http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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backend := vars["backend"]
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if backend, ok := currentConfiguration.Backends[backend]; ok {
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templatesRenderer.JSON(rw, http.StatusOK, backend.Servers)
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}else{
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http.NotFound(rw, r)
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}
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}
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func GetServerHandler(rw http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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backend := vars["backend"]
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server := vars["server"]
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if backend, ok := currentConfiguration.Backends[backend]; ok {
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if server, ok := backend.Servers[server]; ok {
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templatesRenderer.JSON(rw, http.StatusOK, server)
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}else{
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http.NotFound(rw, r)
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}
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}else{
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http.NotFound(rw, r)
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}
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}
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