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package main
import (
"database/sql"
"flag"
"log"
"net/http"
"os"
"os/signal"
_ "github.com/lib/pq"
)
var (
db *sql.DB
)
func main() {
// Set up flags
log.Println("Setting up components")
registerHTTPFlags()
flag.Parse()
// Set up HTTP server
log.Printf("Running HTTP server on port %d", *port)
httpServer := setupHTTPServer()
// Set up the DB connection
database, err := setupDatabase()
if err != nil {
log.Println(err)
return
}
db = database
// React to system signals
signalChannel := make(chan os.Signal, 1)
signal.Notify(signalChannel)
go cleanup(signalChannel, httpServer)
// Start our HTTP server
log.Fatalln(httpServer.ListenAndServe())
}
func cleanup(signalChannel chan os.Signal, server http.Server) {
// Block until we receive a signal
<-signalChannel
log.Println("Requested shutdown")
// Stop everything
log.Println("Stopping HTTP server")
server.Close()
os.Exit(0)
}
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