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server.go
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server.go
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package main
import (
"context"
"database/sql"
"fmt"
"net/http"
"os"
"time"
"github.com/99designs/gqlgen/graphql/playground"
"github.com/99designs/gqlgen/graphql"
"github.com/99designs/gqlgen/graphql/handler"
"github.com/99designs/gqlgen/graphql/handler/extension"
"github.com/99designs/gqlgen/graphql/handler/transport"
tb "github.com/didip/tollbooth"
tbc "github.com/didip/tollbooth_chi"
"github.com/go-chi/chi"
_ "github.com/go-sql-driver/mysql"
_ "github.com/joho/godotenv/autoload"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"github.com/volatiletech/sqlboiler/boil"
"github.com/web-ridge/gqlgen-sqlboiler/examples/social-network/auth"
"github.com/web-ridge/gqlgen-sqlboiler/examples/social-network/graphql_models"
"gitlab.com/webridge-git/api"
)
func initLogger() {
zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
level, levelError := zerolog.ParseLevel(os.Getenv("LOG_LEVEL"))
if levelError != nil {
// Default level for this example is info, unless debug flag is present
zerolog.SetGlobalLevel(zerolog.InfoLevel)
} else {
zerolog.SetGlobalLevel(level)
}
}
func initDb() *sql.DB {
// Start database connection
connStr := fmt.Sprintf(`%v:%v@tcp(%v:%v)/%v`,
os.Getenv("DATABASE_USER"),
os.Getenv("DATABASE_PASSWORD"),
os.Getenv("DATABASE_HOST"),
os.Getenv("DATABASE_PORT"),
os.Getenv("DATABASE_NAME"),
)
if os.Getenv("DATABASE_DEBUG") == "true" {
boil.DebugMode = true
}
// Open handle to database like normal
db, err := sql.Open("mysql", connStr)
if err != nil {
log.Fatal().Err(err).Msg("could not open database connection")
}
// https://www.alexedwards.net/blog/configuring-sqldb
db.SetMaxOpenConns(25)
db.SetMaxIdleConns(25)
db.SetConnMaxLifetime(5 * time.Minute)
if err = db.Ping(); err != nil {
log.Fatal().Err(err).Msg("no real database connection")
}
return db
}
func main() {
initLogger()
db := initDb()
port := os.Getenv("PORT")
// Create a limiter
lmt := tb.NewLimiter(100, nil)
lmt.SetOnLimitReached(api.HandleRateLimiting)
c := graphql_models.Config{
Resolvers: &Resolver{
db: db,
},
}
c.Directives.IsAuthenticated = func(ctx context.Context, obj interface{}, next graphql.Resolver) (interface{}, error) {
if exist := auth.ExistsInContext((ctx)); !exist {
return nil, fmt.Errorf("Access denied")
}
return next(ctx)
}
srv := handler.New(graphql_models.NewExecutableSchema(c))
srv.Use(extension.Introspection{})
srv.AddTransport(transport.Websocket{
KeepAlivePingInterval: 10 * time.Second,
})
srv.AddTransport(transport.Options{})
srv.AddTransport(transport.GET{})
srv.AddTransport(transport.POST{})
srv.AddTransport(transport.MultipartForm{})
// srv.Use(apollotracing.Tracer{})
r := chi.NewRouter()
r.Use(tbc.LimitHandler(lmt))
r.Use(auth.Middleware(db))
r.Handle("/", playground.Handler("GraphQL playground", "/graphql"))
r.Handle("/graphql", srv)
log.Info().Str("host", "localhost").Str("port", port).Msg("Connect GraphQL playground")
if err := http.ListenAndServe(":"+port, r); err != nil {
log.Fatal().Err(err).Str("Could not listen to port", port).Send()
}
}