Official Go implementation of the Ethereum protocol
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 
go-ethereum/graphql/graphiql.go

88 lines
3.0 KiB

// The MIT License (MIT)
//
// Copyright (c) 2016 Muhammed Thanish
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package graphql
import (
"encoding/json"
"net/http"
"path/filepath"
"github.com/ethereum/go-ethereum/graphql/internal/graphiql"
"github.com/ethereum/go-ethereum/log"
)
// GraphiQL is an in-browser IDE for exploring GraphiQL APIs.
// This handler returns GraphiQL when requested.
//
// For more information, see https://github.com/graphql/graphiql.
type GraphiQL struct{}
func respOk(w http.ResponseWriter, body []byte, ctype string) {
w.Header().Set("Content-Type", ctype)
w.Header().Set("X-Content-Type-Options", "nosniff")
w.Write(body)
}
func respErr(w http.ResponseWriter, msg string, code int) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(code)
errMsg, _ := json.Marshal(struct {
Error string
}{Error: msg})
w.Write(errMsg)
}
func (h GraphiQL) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodGet {
respErr(w, "only GET allowed", http.StatusMethodNotAllowed)
return
}
switch r.URL.Path {
case "/graphql/ui/graphiql.min.css":
data, err := graphiql.Assets.ReadFile(filepath.Base(r.URL.Path))
if err != nil {
log.Warn("Error loading graphiql asset", "err", err)
respErr(w, "internal error", http.StatusInternalServerError)
return
}
respOk(w, data, "text/css")
case "/graphql/ui/graphiql.min.js",
"/graphql/ui/react.production.min.js",
"/graphql/ui/react-dom.production.min.js":
data, err := graphiql.Assets.ReadFile(filepath.Base(r.URL.Path))
if err != nil {
log.Warn("Error loading graphiql asset", "err", err)
respErr(w, "internal error", http.StatusInternalServerError)
return
}
respOk(w, data, "application/javascript; charset=utf-8")
default:
data, err := graphiql.Assets.ReadFile("index.html")
if err != nil {
log.Warn("Error loading graphiql asset", "err", err)
respErr(w, "internal error", http.StatusInternalServerError)
return
}
respOk(w, data, "text/html")
}
}