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nvr.go
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nvr.go
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// SPDX-License-Identifier: GPL-2.0-or-later
package nvr
import (
"context"
"encoding/json"
"flag"
"fmt"
"html/template"
"net/http"
"nvr/pkg/group"
"nvr/pkg/log"
"nvr/pkg/monitor"
"nvr/pkg/storage"
"nvr/pkg/system"
"nvr/pkg/video"
"nvr/pkg/web"
"nvr/pkg/web/auth"
"os"
"os/signal"
"path/filepath"
"strconv"
"sync"
"syscall"
"time"
)
// Run .
func Run() error {
envFlag := flag.String("env", "", "path to env.yaml")
flag.Parse()
if *envFlag == "" {
flag.Usage()
return nil
}
envPath, err := filepath.Abs(*envFlag)
if err != nil {
return fmt.Errorf("could not get absolute path of env.yaml: %w", err)
}
wg := &sync.WaitGroup{}
app, err := newApp(envPath, wg, hooks)
if err != nil {
return err
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
fatal := make(chan error, 1)
go func() { fatal <- app.run(ctx) }()
stop := make(chan os.Signal, 1)
signal.Notify(stop, syscall.SIGINT, syscall.SIGTERM)
select {
case err = <-fatal:
app.logf(log.LevelError, "fatal error: %v", err)
case signal := <-stop:
fmt.Println("") // New line.
app.logf(log.LevelInfo, "received %v, stopping", signal)
}
app.monitorManager.StopMonitors()
app.logf(log.LevelInfo, "Monitors stopped.")
cancel()
wg.Wait()
ctx2, cancel2 := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel2()
if err != nil {
return err
}
return app.server.Shutdown(ctx2)
}
// App is the main application.
type App struct {
WG *sync.WaitGroup
Logger *log.Logger
logStore *log.Store
Env storage.ConfigEnv
monitorManager *monitor.Manager
Auth auth.Authenticator
Storage *storage.Manager
videoServer *video.Server
Templater *web.Templater
Router *http.ServeMux
server *http.Server
}
func newApp(envPath string, wg *sync.WaitGroup, hooks *hookList) (*App, error) { //nolint:funlen
// Environment config.
envYAML, err := os.ReadFile(envPath)
if err != nil {
return nil, fmt.Errorf("could not read env.yaml: %w", err)
}
env, err := storage.NewConfigEnv(envPath, envYAML)
if err != nil {
return nil, fmt.Errorf("could not get environment config: %w", err)
}
general, err := storage.NewConfigGeneral(env.ConfigDir)
if err != nil {
return nil, fmt.Errorf("could not get general config: %w", err)
}
// Logs.
logDir := filepath.Join(env.StorageDir, "logs")
logger := log.NewLogger(wg, hooks.logSource)
logStore, err := log.NewStore(logDir, wg, general.DiskSpace)
if err != nil {
return nil, fmt.Errorf("could not create log store: %w", err)
}
// Video server.
videoServer := video.NewServer(logger, wg, *env)
// Monitors.
monitorConfigDir := filepath.Join(env.ConfigDir, "monitors")
monitorManager, err := monitor.NewManager(
monitorConfigDir,
*env,
logger,
videoServer,
hooks.monitor(),
)
if err != nil {
return nil, fmt.Errorf("could not create monitor manager: %w", err)
}
// Monitor groups.
groupConfigDir := filepath.Join(env.ConfigDir, "groups")
groupManager, err := group.NewManager(groupConfigDir)
if err != nil {
return nil, fmt.Errorf("could not create monitor manager: %w", err)
}
// Authentication.
if hooks.newAuthenticator == nil {
return nil, fmt.Errorf( //nolint:goerr113
"no authentication addon enabled, please enable one in '%v'", envPath)
}
a, err := hooks.newAuthenticator(*env, logger)
if err != nil {
return nil, fmt.Errorf("could not create authenticator: %w", err)
}
// Storage.
storageManager := storage.NewManager(env.StorageDir, general, logger)
crawler := storage.NewCrawler(os.DirFS(storageManager.RecordingsDir()))
// Time zone.
timeZone, err := system.TimeZone()
if err != nil {
return nil, err
}
// Templates.
t, err := web.NewTemplater(a, hooks.tplHooks())
if err != nil {
return nil, err
}
t.RegisterTemplateDataFuncs(
func(data template.FuncMap, _ string) {
data["theme"] = general.Get()["theme"]
},
func(data template.FuncMap, _ string) {
data["tz"] = timeZone
},
func(data template.FuncMap, page string) {
groups, _ := json.Marshal(groupManager.Configs())
data["groups"] = string(groups)
},
func(data template.FuncMap, page string) {
monitors, _ := json.Marshal(monitorManager.MonitorsInfo())
data["monitors"] = string(monitors)
},
func(data template.FuncMap, page string) {
data["logSources"] = logger.Sources()
},
)
t.RegisterTemplateDataFuncs(hooks.templateData...)
// Routes.
router := http.NewServeMux()
router.Handle("/live", a.User(t.Render("live.tpl")))
router.Handle("/recordings", a.User(t.Render("recordings.tpl")))
router.Handle("/settings", a.User(t.Render("settings.tpl")))
router.Handle("/settings.js", a.User(t.Render("settings.js")))
router.Handle("/logs", a.Admin(t.Render("logs.tpl")))
router.Handle("/debug", a.Admin(t.Render("debug.tpl")))
router.Handle("/static/", a.User(web.Static()))
router.Handle("/hls/", a.User(videoServer.HandleHLS()))
router.Handle("/api/system/time-zone", a.User(web.TimeZone(timeZone)))
router.Handle("/api/general", a.Admin(web.General(general)))
router.Handle("/api/general/set", a.Admin(a.CSRF(web.GeneralSet(general))))
router.Handle("/api/users", a.Admin(web.Users(a)))
router.Handle("/api/user/set", a.Admin(a.CSRF(web.UserSet(a))))
router.Handle("/api/user/delete", a.Admin(a.CSRF(web.UserDelete(a))))
router.Handle("/api/user/my-token", a.Admin(a.MyToken()))
router.Handle("/logout", a.Logout())
router.Handle("/api/monitor/configs", a.Admin(web.MonitorConfigs(monitorManager)))
router.Handle("/api/monitor/delete", a.Admin(a.CSRF(web.MonitorDelete(monitorManager))))
router.Handle("/api/monitor/list", a.User(web.MonitorList(monitorManager.MonitorsInfo)))
router.Handle("/api/monitor/restart", a.Admin(a.CSRF(web.MonitorRestart(monitorManager))))
router.Handle("/api/monitor/set", a.Admin(a.CSRF(web.MonitorSet(monitorManager))))
router.Handle("/api/group/configs", a.User(web.GroupConfigs(groupManager)))
router.Handle("/api/group/set", a.Admin(a.CSRF(web.GroupSet(groupManager))))
router.Handle("/api/group/delete", a.Admin(a.CSRF(web.GroupDelete(groupManager))))
router.Handle("/api/recording/delete/", a.Admin(a.CSRF(web.RecordingDelete(env.RecordingsDir()))))
router.Handle("/api/recording/thumbnail/", a.User(web.RecordingThumbnail(env.RecordingsDir())))
router.Handle("/api/recording/video/", a.User(web.RecordingVideo(logger, env.RecordingsDir())))
router.Handle("/api/recording/query", a.User(web.RecordingQuery(crawler, logger)))
router.Handle("/api/log/feed", a.Admin(web.LogFeed(logger, a)))
router.Handle("/api/log/query", a.Admin(web.LogQuery(logStore)))
router.Handle("/api/log/sources", a.Admin(web.LogSources(logger)))
return &App{
WG: wg,
Logger: logger,
logStore: logStore,
Env: *env,
monitorManager: monitorManager,
Auth: a,
Storage: storageManager,
videoServer: videoServer,
Templater: t,
Router: router,
}, nil
}
func (app *App) run(ctx context.Context) error {
// Main server.
address := ":" + strconv.Itoa(app.Env.Port)
app.server = &http.Server{Addr: address, Handler: app.Router}
if err := app.Logger.Start(ctx); err != nil {
return fmt.Errorf("could not start logger: %w", err)
}
app.Logger.LogToWriter(ctx, os.Stdout)
app.logStore.SaveLogs(ctx, app.Logger)
app.logStore.PurgeLoop(ctx, app.Logger)
time.Sleep(10 * time.Millisecond)
if err := hooks.appRun(ctx, app); err != nil {
return err
}
app.logf(log.LevelInfo, "Starting..")
if err := app.Env.PrepareEnvironment(); err != nil {
return fmt.Errorf("could not prepare environment: %w", err)
}
if err := app.videoServer.Start(ctx); err != nil {
return fmt.Errorf("could not start video server: %w", err)
}
app.monitorManager.StartMonitors()
go app.Storage.PurgeLoop(ctx, 10*time.Minute)
app.logf(log.LevelInfo, "Serving app on port %v", app.Env.Port)
return app.server.ListenAndServe()
}
func (app *App) logf(level log.Level, format string, a ...interface{}) {
app.Logger.Log(log.Entry{
Level: level,
Src: "app",
Msg: fmt.Sprintf(format, a...),
})
}