ev/main.go
2022-08-14 13:56:55 -06:00

110 lines
2.5 KiB
Go

package main
import (
"context"
"log"
"net/http"
"os"
"os/signal"
"time"
"github.com/99designs/gqlgen/graphql/handler"
"github.com/ravilushqa/otelgqlgen"
"github.com/rs/cors"
"golang.org/x/sync/errgroup"
"github.com/sour-is/ev/api/gql_ev"
"github.com/sour-is/ev/internal/graph"
"github.com/sour-is/ev/internal/graph/generated"
"github.com/sour-is/ev/internal/logz"
"github.com/sour-is/ev/pkg/domain"
"github.com/sour-is/ev/pkg/es"
diskstore "github.com/sour-is/ev/pkg/es/driver/disk-store"
memstore "github.com/sour-is/ev/pkg/es/driver/mem-store"
"github.com/sour-is/ev/pkg/es/driver/streamer"
"github.com/sour-is/ev/pkg/msgbus"
"github.com/sour-is/ev/pkg/playground"
)
const AppName string = "sour.is-ev"
func main() {
ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, os.Kill)
go func() {
<-ctx.Done()
defer cancel()
}()
ctx, stop := logz.Init(ctx, AppName)
defer stop()
Mup, err := logz.Meter(ctx).SyncInt64().UpDownCounter("up")
if err != nil {
log.Fatal(err)
}
Mup.Add(ctx, 1)
if err := run(ctx); err != nil && err != http.ErrServerClosed {
log.Fatal(err)
}
}
func run(ctx context.Context) error {
diskstore.Init(ctx)
memstore.Init(ctx)
if err := domain.Init(ctx); err != nil {
return err
}
es, err := es.Open(ctx, env("EV_DATA", "file:data"), streamer.New(ctx))
if err != nil {
return err
}
svc, err := msgbus.New(ctx, es, env("EV_BASE_URL", "https://ev.sour.is/inbox/"))
if err != nil {
return err
}
r, err := gql_ev.New(es)
if err != nil {
return err
}
res := graph.New(r)
gql := handler.NewDefaultServer(generated.NewExecutableSchema(generated.Config{Resolvers: res}))
gql.Use(otelgqlgen.Middleware())
s := http.Server{
Addr: env("EV_HTTP", ":8080"),
}
mux := http.NewServeMux()
mux.Handle("/", playground.Handler("GraphQL playground", "/gql"))
mux.Handle("/gql", logz.Htrace(res.ChainMiddlewares(gql), "gql"))
mux.Handle("/inbox/", logz.Htrace(http.StripPrefix("/inbox/", svc), "inbox"))
mux.Handle("/.well-known/salty/", logz.Htrace(svc, "lookup"))
mux.Handle("/metrics", logz.PromHTTP(ctx))
s.Handler = cors.AllowAll().Handler(mux)
log.Print("Listen on ", s.Addr)
g, ctx := errgroup.WithContext(ctx)
g.Go(s.ListenAndServe)
g.Go(func() error {
<-ctx.Done()
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
return s.Shutdown(ctx)
})
return g.Wait()
}
func env(name, defaultValue string) string {
if v := os.Getenv(name); v != "" {
log.Println("# ", name, " = ", v)
return v
}
return defaultValue
}