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server.go
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server.go
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// Copyright 2019-present Facebook
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"context"
"net/http"
"time"
"github.com/99designs/gqlgen/graphql/handler"
"github.com/99designs/gqlgen/graphql/handler/debug"
"github.com/99designs/gqlgen/graphql/playground"
"github.com/alecthomas/kong"
"github.com/dmalykh/entcontrib/entgql"
todo "github.com/dmalykh/entcontrib/entgql/internal/todouuid"
"github.com/dmalykh/entcontrib/entgql/internal/todouuid/ent"
"go.uber.org/zap"
_ "github.com/dmalykh/entcontrib/entgql/internal/todouuid/ent/runtime"
_ "github.com/mattn/go-sqlite3"
)
func main() {
var cli struct {
Addr string `name:"address" default:":8081" help:"Address to listen on."`
Debug bool `name:"debug" help:"Enable debugging mode."`
}
kong.Parse(&cli)
log, _ := zap.NewDevelopment()
client, err := ent.Open(
"sqlite3",
"file:ent?mode=memory&cache=shared&_fk=1",
)
if err != nil {
log.Fatal("opening ent client", zap.Error(err))
}
if err := client.Schema.Create(context.Background()); err != nil {
log.Fatal("running schema migration", zap.Error(err))
}
srv := handler.NewDefaultServer(todo.NewSchema(client))
srv.Use(entgql.Transactioner{TxOpener: client})
if cli.Debug {
srv.Use(&debug.Tracer{})
}
http.Handle("/",
playground.Handler("Todo", "/query"),
)
http.Handle("/query", srv)
log.Info("listening on", zap.String("address", cli.Addr))
server := &http.Server{
Addr: cli.Addr,
ReadHeaderTimeout: 30 * time.Second,
}
if err := server.ListenAndServe(); err != nil {
log.Error("http server terminated", zap.Error(err))
}
}