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