2019-02-24 08:25:39 +00:00
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package router
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import (
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"fmt"
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2020-04-02 20:50:39 +01:00
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"github.com/gorilla/mux"
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"io"
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2019-02-24 08:25:39 +00:00
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"log"
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"net/http"
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2020-04-02 20:50:39 +01:00
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"os"
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"strconv"
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2019-02-24 08:25:39 +00:00
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)
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2020-04-02 20:50:39 +01:00
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type Handler func(context *Context, w http.ResponseWriter, r *http.Request) *HTTPError
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type HTTPError struct {
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Message string
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StatusCode int
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}
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2019-02-24 08:25:39 +00:00
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2020-04-02 20:50:39 +01:00
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// Context contains any information to be shared with middlewares.
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type Context struct {}
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func Handle(handlers ...Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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context := &Context{}
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2019-02-24 08:25:39 +00:00
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for _, handler := range handlers {
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2020-04-02 20:50:39 +01:00
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err := handler(context, w, r)
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2019-02-24 08:25:39 +00:00
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if err != nil {
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log.Printf("%v", err)
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w.Write([]byte(http.StatusText(err.StatusCode)))
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return
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}
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}
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})
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}
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2020-04-02 20:50:39 +01:00
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2019-02-24 08:25:39 +00:00
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// Actual router, define endpoints here.
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func Init() *mux.Router {
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r := mux.NewRouter()
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// "Static" paths
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2020-03-22 00:18:19 +00:00
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r.PathPrefix("/javascript/").Handler(http.StripPrefix("/javascript/", http.FileServer(http.Dir("assets/web/javascript"))))
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r.PathPrefix("/css/").Handler(http.StripPrefix("/css/", http.FileServer(http.Dir("assets/web/css"))))
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2019-02-24 08:25:39 +00:00
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// Paths that require specific handlers
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r.Handle("/", Handle(
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rootHandler(),
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)).Methods("GET")
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2019-07-14 04:19:28 +01:00
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2020-02-24 18:07:47 +00:00
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r.Handle("/api/providers", Handle(
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ListProviders(),
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2019-04-02 06:43:57 +01:00
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)).Methods("GET")
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2020-02-24 18:07:47 +00:00
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2020-03-22 00:18:19 +00:00
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r.Handle(`/api/files/{provider:[a-zA-Z0-9]+\/*}`, Handle(
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2020-02-24 18:07:47 +00:00
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HandleProvider(),
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2020-03-30 20:51:26 +01:00
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)).Methods("GET", "POST")
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2019-07-28 05:43:05 +01:00
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2020-04-03 02:24:18 +01:00
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r.Handle(`/api/files/{provider:[a-zA-Z0-9]+}/{file:[a-zA-Z0-9=\-\/\s.,&_+]+}`, Handle(
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2020-02-24 18:07:47 +00:00
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HandleProvider(),
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2020-03-30 20:51:26 +01:00
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)).Methods("GET", "POST")
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2019-02-24 08:25:39 +00:00
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return r
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}
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2020-04-02 20:50:39 +01:00
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// Handles serving index page.
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func rootHandler() Handler {
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return func(context *Context, w http.ResponseWriter, r *http.Request) *HTTPError {
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f, err := os.Open("assets/web/index.html")
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2019-07-14 04:19:28 +01:00
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if err != nil {
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2020-04-02 20:50:39 +01:00
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return &HTTPError{
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Message: fmt.Sprintf("error serving index page from assets/web"),
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2019-07-14 04:19:28 +01:00
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StatusCode: http.StatusInternalServerError,
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}
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}
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2020-04-02 20:50:39 +01:00
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defer f.Close()
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stats, err := f.Stat()
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2019-07-14 04:19:28 +01:00
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if err != nil {
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2020-04-02 20:50:39 +01:00
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return &HTTPError{
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Message: fmt.Sprintf("error serving index page from assets/web"),
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StatusCode: http.StatusInternalServerError,
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2019-07-14 04:19:28 +01:00
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}
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2020-04-02 20:50:39 +01:00
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} else {
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w.Header().Add("Content-Length", strconv.FormatInt(stats.Size(), 10))
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2019-07-14 04:19:28 +01:00
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}
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2020-04-02 20:50:39 +01:00
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_, err = io.Copy(w, f)
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if err != nil {
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return &HTTPError{
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Message: fmt.Sprintf("error serving index page from assets/web"),
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StatusCode: http.StatusInternalServerError,
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2019-02-24 08:25:39 +00:00
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}
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}
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2020-04-02 20:50:39 +01:00
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return nil
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2019-02-24 08:25:39 +00:00
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}
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}
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