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108 lines
3.1 KiB
Go
108 lines
3.1 KiB
Go
package gphttp
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"syscall"
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"github.com/yusing/go-proxy/internal/gperr"
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"github.com/yusing/go-proxy/internal/net/gphttp/httpheaders"
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)
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// ServerError is for handling server errors.
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//
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// It logs the error and returns http.StatusInternalServerError to the client.
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// Status code can be specified as an argument.
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func ServerError(w http.ResponseWriter, r *http.Request, err error, code ...int) {
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switch {
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case err == nil,
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errors.Is(err, context.Canceled),
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errors.Is(err, syscall.EPIPE),
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errors.Is(err, syscall.ECONNRESET):
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return
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}
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LogError(r).Msg(err.Error())
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if httpheaders.IsWebsocket(r.Header) {
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return
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}
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if len(code) == 0 {
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code = []int{http.StatusInternalServerError}
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}
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http.Error(w, http.StatusText(code[0]), code[0])
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}
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// ClientError is for responding to client errors.
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//
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// It returns http.StatusBadRequest with reason to the client.
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// Status code can be specified as an argument.
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//
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// For JSON marshallable errors (e.g. gperr.Error), it returns the error details as JSON.
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// Otherwise, it returns the error details as plain text.
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func ClientError(w http.ResponseWriter, r *http.Request, err error, code ...int) {
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if len(code) == 0 {
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code = []int{http.StatusBadRequest}
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}
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w.WriteHeader(code[0])
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accept := GetAccept(r.Header)
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switch {
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case accept.AcceptJSON():
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(err)
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case accept.AcceptMarkdown():
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w.Header().Set("Content-Type", "text/markdown")
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w.Write(gperr.Markdown(err))
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default:
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w.Header().Set("Content-Type", "text/plain")
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w.Write(gperr.Plain(err))
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}
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}
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// JSONError returns a JSON response of gperr.Error with the given status code.
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func JSONError(w http.ResponseWriter, err gperr.Error, code int) {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(code)
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json.NewEncoder(w).Encode(err)
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}
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// BadRequest returns a Bad Request response with the given error message.
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func BadRequest(w http.ResponseWriter, err string, code ...int) {
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if len(code) == 0 {
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code = []int{http.StatusBadRequest}
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}
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w.WriteHeader(code[0])
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w.Write([]byte(err))
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}
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// Unauthorized returns an Unauthorized response with the given error message.
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func Unauthorized(w http.ResponseWriter, err string) {
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BadRequest(w, err, http.StatusUnauthorized)
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}
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// Forbidden returns a Forbidden response with the given error message.
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func Forbidden(w http.ResponseWriter, err string) {
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BadRequest(w, err, http.StatusForbidden)
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}
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// NotFound returns a Not Found response with the given error message.
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func NotFound(w http.ResponseWriter, err string) {
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BadRequest(w, err, http.StatusNotFound)
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}
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func MissingKey(w http.ResponseWriter, k string) {
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BadRequest(w, k+" is required", http.StatusBadRequest)
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}
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func InvalidKey(w http.ResponseWriter, k string) {
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BadRequest(w, k+" is invalid", http.StatusBadRequest)
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}
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func KeyAlreadyExists(w http.ResponseWriter, k, v string) {
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BadRequest(w, fmt.Sprintf("%s %q already exists", k, v), http.StatusBadRequest)
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}
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func ValueNotFound(w http.ResponseWriter, k, v string) {
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BadRequest(w, fmt.Sprintf("%s %q not found", k, v), http.StatusNotFound)
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}
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