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server.go
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package main
import (
"io/ioutil"
"net/http"
"time"
graphql "github.com/graph-gophers/graphql-go"
log "github.com/sirupsen/logrus"
"github.com/graph-gophers/graphql-go/relay"
)
// nolint: gas
func main() {
s, err := getSchema("./schema.graphql")
if err != nil {
panic(err)
}
db, err := newDB("./db.sqlite")
if err != nil {
panic(err)
}
schema := graphql.MustParseSchema(s, &Resolver{db: db}, graphql.UseStringDescriptions())
mux := http.NewServeMux()
mux.Handle("/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Write(page)
}))
mux.Handle("/query", &relay.Handler{Schema: schema})
log.WithFields(log.Fields{"time": time.Now()}).Info("starting server")
log.Fatal(http.ListenAndServe("localhost:8080", logged(mux)))
}
var page = []byte(`
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.10.2/graphiql.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/fetch/1.1.0/fetch.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react-dom.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.10.2/graphiql.js"></script>
</head>
<body style="width: 100%; height: 100%; margin: 0; overflow: hidden;">
<div id="graphiql" style="height: 100vh;">Loading...</div>
<script>
function graphQLFetcher(graphQLParams) {
return fetch("/query", {
method: "post",
body: JSON.stringify(graphQLParams),
credentials: "include",
}).then(function (response) {
return response.text();
}).then(function (responseBody) {
try {
return JSON.parse(responseBody);
} catch (error) {
return responseBody;
}
});
}
ReactDOM.render(
React.createElement(GraphiQL, {fetcher: graphQLFetcher}),
document.getElementById("graphiql")
);
</script>
</body>
</html>
`)
func getSchema(path string) (string, error) {
b, err := ioutil.ReadFile(path)
if err != nil {
return "", err
}
return string(b), nil
}
// logging middleware
func logged(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
start := time.Now().UTC()
next.ServeHTTP(w, r)
log.WithFields(log.Fields{
"path": r.RequestURI,
"IP": r.RemoteAddr,
"elapsed": time.Now().UTC().Sub(start),
}).Info()
})
}