photoprism/internal/commands/start.go

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package commands
import (
"context"
"fmt"
"os"
"os/signal"
"strconv"
"syscall"
"time"
"github.com/photoprism/photoprism/internal/config"
"github.com/photoprism/photoprism/internal/server"
"github.com/photoprism/photoprism/internal/util"
"github.com/sevlyar/go-daemon"
"github.com/urfave/cli"
)
// Starts web server (user interface)
var StartCommand = cli.Command{
Name: "start",
Usage: "Starts web server",
Flags: startFlags,
Action: startAction,
}
var startFlags = []cli.Flag{
cli.BoolFlag{
Name: "detach-server, d",
Usage: "detach from the console (daemon mode)",
EnvVar: "PHOTOPRISM_DETACH_SERVER",
},
cli.BoolFlag{
Name: "config, c",
Usage: "show config",
},
}
func startAction(ctx *cli.Context) error {
conf := config.NewConfig(ctx)
if err := conf.CreateDirectories(); err != nil {
return err
}
if ctx.IsSet("config") {
fmt.Printf("NAME VALUE\n")
fmt.Printf("detach-server %t\n", conf.DetachServer())
fmt.Printf("sql-host %s\n", conf.SqlServerHost())
fmt.Printf("sql-port %d\n", conf.SqlServerPort())
fmt.Printf("sql-password %s\n", conf.SqlServerPassword())
fmt.Printf("sql-path %s\n", conf.SqlServerPath())
fmt.Printf("http-host %s\n", conf.HttpServerHost())
fmt.Printf("http-port %d\n", conf.HttpServerPort())
fmt.Printf("http-mode %s\n", conf.HttpServerMode())
return nil
}
// pass this context down the chain
cctx, cancel := context.WithCancel(context.Background())
if conf.HttpServerPort() < 1 || conf.HttpServerPort() > 65535 {
log.Fatal("server port must be a number between 1 and 65535")
}
if err := conf.CreateDirectories(); err != nil {
log.Fatal(err)
}
if err := conf.Init(cctx); err != nil {
log.Fatal(err)
}
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conf.MigrateDb()
dctx := new(daemon.Context)
dctx.LogFileName = conf.LogFilename()
dctx.PidFileName = conf.PIDFilename()
dctx.Args = ctx.Args()
if !daemon.WasReborn() && conf.DetachServer() {
conf.Shutdown()
cancel()
if pid, ok := childAlreadyRunning(conf.PIDFilename()); ok {
log.Infof("daemon already running with process id %v\n", pid)
return nil
}
child, err := dctx.Reborn()
if err != nil {
log.Fatal(err)
}
if child != nil {
if !util.Overwrite(conf.PIDFilename(), []byte(strconv.Itoa(child.Pid))) {
log.Fatalf("failed writing process id to \"%s\"", conf.PIDFilename())
}
log.Infof("daemon started with process id %v\n", child.Pid)
return nil
}
}
log.Infof("starting web server at %s:%d", conf.HttpServerHost(), conf.HttpServerPort())
if conf.ReadOnly() {
log.Infof("read-only mode enabled")
}
go server.Start(cctx, conf)
quit := make(chan os.Signal)
signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
<-quit
log.Info("shutting down...")
conf.Shutdown()
cancel()
err := dctx.Release()
if err != nil {
log.Error(err)
}
time.Sleep(3 * time.Second)
return nil
}