refactor: moving items around into related files/packages
This commit is contained in:
Jon Lundy
120
pkg/gql/graphiql/playground.go
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120
pkg/gql/graphiql/playground.go
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@@ -0,0 +1,120 @@
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package graphiql
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import (
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"html/template"
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"net/http"
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"net/url"
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)
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var page = template.Must(template.New("graphiql").Parse(`<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>{{.title}}</title>
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<style>
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body {
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height: 100%;
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margin: 0;
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width: 100%;
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overflow: hidden;
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}
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#graphiql {
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height: 100vh;
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}
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</style>
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<script
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src="https://cdn.jsdelivr.net/npm/react@{{.reactVersion}}/umd/react.production.min.js"
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integrity="{{.reactSRI}}"
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crossorigin="anonymous"
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></script>
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<script
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src="https://cdn.jsdelivr.net/npm/react-dom@{{.reactVersion}}/umd/react-dom.production.min.js"
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integrity="{{.reactDOMSRI}}"
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crossorigin="anonymous"
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></script>
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<link
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rel="stylesheet"
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href="https://cdn.jsdelivr.net/npm/graphiql@{{.version}}/graphiql.min.css"
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x-integrity="{{.cssSRI}}"
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crossorigin="anonymous"
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/>
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</head>
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<body>
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<div id="graphiql">Loading...</div>
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<script
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src="https://cdn.jsdelivr.net/npm/graphiql@{{.version}}/graphiql.min.js"
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x-integrity="{{.jsSRI}}"
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crossorigin="anonymous"
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></script>
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<script>
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{{- if .endpointIsAbsolute}}
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const url = {{.endpoint}};
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const subscriptionUrl = {{.subscriptionEndpoint}};
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{{- else}}
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const url = location.protocol + '//' + location.host + {{.endpoint}};
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const wsProto = location.protocol == 'https:' ? 'wss:' : 'ws:';
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const subscriptionUrl = wsProto + '//' + location.host + {{.endpoint}};
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{{- end}}
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const fetcher = GraphiQL.createFetcher({ url, subscriptionUrl });
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ReactDOM.render(
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React.createElement(GraphiQL, {
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fetcher: fetcher,
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isHeadersEditorEnabled: true,
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shouldPersistHeaders: true
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}),
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document.getElementById('graphiql'),
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);
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</script>
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</body>
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</html>
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`))
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// Handler responsible for setting up the playground
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func Handler(title string, endpoint string) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Add("Content-Type", "text/html; charset=UTF-8")
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err := page.Execute(w, map[string]interface{}{
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"title": title,
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"endpoint": endpoint,
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"endpointIsAbsolute": endpointHasScheme(endpoint),
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"subscriptionEndpoint": getSubscriptionEndpoint(endpoint),
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"version": "2.0.13",
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"reactVersion": "17.0.2",
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"cssSRI": "sha256-qKvndYgkAMQOBoa1SZF9NlbIig+kQ3Fk4f8wlrEqBLw=",
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"jsSRI": "sha256-dExtzxjgqXfOgQ94xw079jAjd4dPAFrO2Qz6I3Yd9Ko=",
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"reactSRI": "sha256-Ipu/TQ50iCCVZBUsZyNJfxrDk0E2yhaEIz0vqI+kFG8=",
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"reactDOMSRI": "sha256-nbMykgB6tsOFJ7OdVmPpdqMFVk4ZsqWocT6issAPUF0=",
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})
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if err != nil {
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panic(err)
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}
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}
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}
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// endpointHasScheme checks if the endpoint has a scheme.
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func endpointHasScheme(endpoint string) bool {
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u, err := url.Parse(endpoint)
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return err == nil && u.Scheme != ""
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}
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// getSubscriptionEndpoint returns the subscription endpoint for the given
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// endpoint if it is parsable as a URL, or an empty string.
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func getSubscriptionEndpoint(endpoint string) string {
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u, err := url.Parse(endpoint)
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if err != nil {
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return ""
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}
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switch u.Scheme {
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case "https":
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u.Scheme = "wss"
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default:
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u.Scheme = "ws"
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}
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return u.String()
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}
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62
pkg/gql/playground/playground.go
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62
pkg/gql/playground/playground.go
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@@ -0,0 +1,62 @@
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package playground
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import (
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"html/template"
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"net/http"
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)
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var page = template.Must(template.New("graphiql").Parse(`<!DOCTYPE html>
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<html>
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<head>
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<meta charset=utf-8/>
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<meta name="viewport" content="user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, minimal-ui">
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<link rel="shortcut icon" href="https://graphcool-playground.netlify.com/favicon.png">
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/graphql-playground-react@{{ .version }}/build/static/css/index.css"
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integrity="{{ .cssSRI }}" crossorigin="anonymous"/>
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<link rel="shortcut icon" href="https://cdn.jsdelivr.net/npm/graphql-playground-react@{{ .version }}/build/favicon.png"
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integrity="{{ .faviconSRI }}" crossorigin="anonymous"/>
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<script src="https://cdn.jsdelivr.net/npm/graphql-playground-react@{{ .version }}/build/static/js/middleware.js"
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integrity="{{ .jsSRI }}" crossorigin="anonymous"></script>
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<title>{{.title}}</title>
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</head>
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<body>
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<style type="text/css">
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html { font-family: "Open Sans", sans-serif; overflow: hidden; }
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body { margin: 0; background: #172a3a; }
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</style>
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<div id="root"/>
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<script type="text/javascript">
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window.addEventListener('load', function (event) {
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const root = document.getElementById('root');
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root.classList.add('playgroundIn');
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const wsProto = location.protocol == 'https:' ? 'wss:' : 'ws:'
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GraphQLPlayground.init(root, {
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endpoint: location.protocol + '//' + location.host + '{{.endpoint}}',
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subscriptionsEndpoint: wsProto + '//' + location.host + '{{.endpoint }}',
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shareEnabled: true,
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settings: {
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'request.credentials': 'same-origin'
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}
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})
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})
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</script>
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</body>
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</html>
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`))
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func Handler(title string, endpoint string) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Add("Content-Type", "text/html")
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err := page.Execute(w, map[string]string{
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"title": title,
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"endpoint": endpoint,
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"version": "1.7.28",
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"cssSRI": "sha256-dKnNLEFwKSVFpkpjRWe+o/jQDM6n/JsvQ0J3l5Dk3fc=",
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"faviconSRI": "sha256-GhTyE+McTU79R4+pRO6ih+4TfsTOrpPwD8ReKFzb3PM=",
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"jsSRI": "sha256-VVwEZwxs4qS5W7E+/9nXINYgr/BJRWKOi/rTMUdmmWg=",
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})
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if err != nil {
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panic(err)
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}
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}
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}
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141
pkg/gql/resolver/resolver.go
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141
pkg/gql/resolver/resolver.go
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@@ -0,0 +1,141 @@
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package resolver
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import (
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"context"
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"fmt"
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"net/http"
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"os"
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"reflect"
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"runtime/debug"
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"time"
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"github.com/99designs/gqlgen/graphql"
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"github.com/99designs/gqlgen/graphql/handler"
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"github.com/99designs/gqlgen/graphql/handler/extension"
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"github.com/99designs/gqlgen/graphql/handler/lru"
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"github.com/99designs/gqlgen/graphql/handler/transport"
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"github.com/vektah/gqlparser/v2/gqlerror"
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"github.com/gorilla/websocket"
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"github.com/ravilushqa/otelgqlgen"
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"github.com/sour-is/ev/internal/lg"
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"github.com/sour-is/ev/pkg/gql/graphiql"
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"github.com/sour-is/ev/pkg/gql/playground"
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)
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type BaseResolver interface {
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ExecutableSchema() graphql.ExecutableSchema
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BaseResolver() IsResolver
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}
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type Resolver[T BaseResolver] struct {
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res T
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}
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type IsResolver interface {
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IsResolver()
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}
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func New[T BaseResolver](ctx context.Context, base T, resolvers ...IsResolver) (*Resolver[T], error) {
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_, span := lg.Span(ctx)
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defer span.End()
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v := reflect.ValueOf(base)
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v = reflect.Indirect(v)
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noop := reflect.ValueOf(base.BaseResolver())
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outer:
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for _, idx := range reflect.VisibleFields(v.Type()) {
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field := v.FieldByIndex(idx.Index)
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for i := range resolvers {
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rs := reflect.ValueOf(resolvers[i])
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if field.IsNil() && rs.Type().Implements(field.Type()) {
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span.AddEvent(fmt.Sprint("found ", field.Type().Name()))
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field.Set(rs)
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continue outer
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}
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}
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span.AddEvent(fmt.Sprint("default ", field.Type().Name()))
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field.Set(noop)
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}
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return &Resolver[T]{base}, nil
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}
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func (r *Resolver[T]) Resolver() T {
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return r.res
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}
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// ChainMiddlewares will check all embeded resolvers for a GetMiddleware func and add to handler.
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func (r *Resolver[T]) ChainMiddlewares(h http.Handler) http.Handler {
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v := reflect.ValueOf(r) // Get reflected value of *Resolver
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v = reflect.Indirect(v) // Get the pointed value (returns a zero value on nil)
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n := v.NumField() // Get number of fields to iterate over.
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for i := 0; i < n; i++ {
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f := v.Field(i)
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if !f.CanInterface() { // Skip non-interface types.
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continue
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}
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if iface, ok := f.Interface().(interface {
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GetMiddleware() func(http.Handler) http.Handler
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}); ok {
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h = iface.GetMiddleware()(h) // Append only items that fulfill the interface.
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}
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}
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return h
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}
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func (r *Resolver[T]) RegisterHTTP(mux *http.ServeMux) {
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gql := NewServer(r.res.ExecutableSchema())
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gql.SetRecoverFunc(NoopRecover)
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gql.Use(otelgqlgen.Middleware())
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mux.Handle("/graphiql", graphiql.Handler("GraphiQL playground", "/gql"))
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mux.Handle("/gql", lg.Htrace(r.ChainMiddlewares(gql), "gql"))
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mux.Handle("/playground", playground.Handler("GraphQL playground", "/gql"))
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}
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func NoopRecover(ctx context.Context, err interface{}) error {
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if err, ok := err.(string); ok && err == "not implemented" {
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return gqlerror.Errorf("not implemented")
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}
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fmt.Fprintln(os.Stderr, err)
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fmt.Fprintln(os.Stderr)
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debug.PrintStack()
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return gqlerror.Errorf("internal system error")
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}
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func NewServer(es graphql.ExecutableSchema) *handler.Server {
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srv := handler.New(es)
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srv.AddTransport(transport.Websocket{
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Upgrader: websocket.Upgrader{
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CheckOrigin: func(r *http.Request) bool {
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switch r.Header.Get("Origin") {
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case "https://ev.sour.is", "https://www.graphqlbin.com", "http://localhost:8080":
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return true
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default:
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return false
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}
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},
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},
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KeepAlivePingInterval: 10 * time.Second,
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})
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srv.AddTransport(transport.Options{})
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srv.AddTransport(transport.GET{})
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srv.AddTransport(transport.POST{})
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srv.AddTransport(transport.MultipartForm{})
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srv.SetQueryCache(lru.New(1000))
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srv.Use(extension.Introspection{})
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srv.Use(extension.AutomaticPersistedQuery{
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Cache: lru.New(100),
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})
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return srv
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}
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