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mxpv-podsync/cmd/app/main.go
2017-11-04 17:27:01 -07:00

123 lines
2.4 KiB
Go

package main
import (
"context"
"fmt"
"log"
"net"
"net/http"
"os"
"os/signal"
"strings"
"syscall"
"github.com/GoogleCloudPlatform/cloudsql-proxy/proxy/proxy"
"github.com/go-pg/pg"
"github.com/mxpv/podsync/pkg/api"
"github.com/mxpv/podsync/pkg/builders"
"github.com/mxpv/podsync/pkg/config"
"github.com/mxpv/podsync/pkg/feeds"
"github.com/mxpv/podsync/pkg/handler"
"github.com/mxpv/podsync/pkg/stats"
"github.com/mxpv/podsync/pkg/support"
"github.com/pkg/errors"
)
func main() {
stop := make(chan os.Signal)
signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Create core sevices
cfg, err := config.ReadConfiguration()
if err != nil {
panic(err)
}
database, err := createPg(cfg.PostgresConnectionURL)
if err != nil {
panic(err)
}
statistics, err := stats.NewRedisStats(cfg.RedisURL)
if err != nil {
panic(err)
}
patreon := support.NewPatreon(database)
// Builders
youtube, err := builders.NewYouTubeBuilder(cfg.YouTubeApiKey)
if err != nil {
panic(err)
}
vimeo, err := builders.NewVimeoBuilder(ctx, cfg.VimeoApiKey)
if err != nil {
panic(err)
}
feed, err := feeds.NewFeedService(
feeds.WithPostgres(database),
feeds.WithStats(statistics),
feeds.WithBuilder(api.ProviderYoutube, youtube),
feeds.WithBuilder(api.ProviderVimeo, vimeo),
)
if err != nil {
panic(err)
}
srv := http.Server{
Addr: fmt.Sprintf(":%d", 5001),
Handler: handler.New(feed, patreon, cfg),
}
go func() {
log.Println("running listener")
if err := srv.ListenAndServe(); err != nil {
log.Fatal(err)
}
}()
<-stop
log.Printf("shutting down server")
srv.Shutdown(ctx)
database.Close()
statistics.Close()
log.Printf("server gracefully stopped")
}
func createPg(connectionURL string) (*pg.DB, error) {
opts, err := pg.ParseURL(connectionURL)
if err != nil {
return nil, err
}
// If host format is "projection:region:host", than use Google SQL Proxy
// See https://github.com/go-pg/pg/issues/576
if strings.Count(opts.Addr, ":") == 2 {
log.Print("using GCP SQL proxy")
opts.Dialer = func(network, addr string) (net.Conn, error) {
return proxy.Dial(addr)
}
}
db := pg.Connect(opts)
// Check database connectivity
if _, err := db.ExecOne("SELECT 1"); err != nil {
db.Close()
return nil, errors.Wrap(err, "failed to check database connectivity")
}
return db, nil
}