mirror of
https://github.com/elyby/chrly.git
synced 2024-12-26 15:00:25 +05:30
110 lines
2.8 KiB
Go
110 lines
2.8 KiB
Go
package http
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import (
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"context"
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"encoding/json"
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"log/slog"
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"net/http"
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"time"
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"github.com/gorilla/mux"
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"go.opentelemetry.io/otel/codes"
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"go.opentelemetry.io/otel/trace"
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"ely.by/chrly/internal/security"
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)
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func StartServer(ctx context.Context, server *http.Server) {
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srvErr := make(chan error, 1)
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go func() {
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slog.Info("Starting the server", slog.String("addr", server.Addr))
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srvErr <- server.ListenAndServe()
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close(srvErr)
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}()
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select {
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case err := <-srvErr:
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slog.Error("Error in the server", slog.Any("error", err))
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case <-ctx.Done():
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slog.Info("Got stop signal, starting graceful shutdown")
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stopCtx, cancelFunc := context.WithTimeout(context.Background(), 3*time.Second)
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defer cancelFunc()
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_ = server.Shutdown(stopCtx)
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slog.Info("Graceful shutdown succeed, exiting")
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}
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}
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type Authenticator interface {
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Authenticate(req *http.Request, scope security.Scope) error
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}
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func NewAuthenticationMiddleware(authenticator Authenticator, scope security.Scope) mux.MiddlewareFunc {
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return func(handler http.Handler) http.Handler {
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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err := authenticator.Authenticate(req, scope)
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if err != nil {
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apiForbidden(resp, err.Error())
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return
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}
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handler.ServeHTTP(resp, req)
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})
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}
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}
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func NewConditionalMiddleware(cond func(req *http.Request) bool, m mux.MiddlewareFunc) mux.MiddlewareFunc {
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return func(handler http.Handler) http.Handler {
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return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
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if cond(req) {
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handler = m.Middleware(handler)
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}
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handler.ServeHTTP(resp, req)
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})
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}
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}
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func NotFoundHandler(response http.ResponseWriter, _ *http.Request) {
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data, _ := json.Marshal(map[string]string{
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"status": "404",
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"message": "Not Found",
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})
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response.Header().Set("Content-Type", "application/json")
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response.WriteHeader(http.StatusNotFound)
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_, _ = response.Write(data)
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}
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func apiBadRequest(resp http.ResponseWriter, errorsPerField map[string][]string) {
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resp.WriteHeader(http.StatusBadRequest)
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resp.Header().Set("Content-Type", "application/json")
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result, _ := json.Marshal(map[string]any{
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"errors": errorsPerField,
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})
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_, _ = resp.Write(result)
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}
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var internalServerError = []byte("Internal server error")
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func apiServerError(resp http.ResponseWriter, req *http.Request, err error) {
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span := trace.SpanFromContext(req.Context())
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span.SetStatus(codes.Error, "")
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span.RecordError(err)
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resp.WriteHeader(http.StatusInternalServerError)
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resp.Header().Set("Content-Type", "text/plain")
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_, _ = resp.Write(internalServerError)
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}
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func apiForbidden(resp http.ResponseWriter, reason string) {
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resp.WriteHeader(http.StatusForbidden)
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resp.Header().Set("Content-Type", "application/json")
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result, _ := json.Marshal(map[string]any{
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"error": reason,
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})
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_, _ = resp.Write(result)
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}
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