mirror of
https://git.sr.ht/~ashkeel/strimertul
synced 2024-09-18 01:50:50 +00:00
251 lines
6.9 KiB
Go
251 lines
6.9 KiB
Go
package main
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import (
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"embed"
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"flag"
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"fmt"
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"io/fs"
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"log"
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"math/rand"
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"os"
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"runtime"
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"time"
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"go.uber.org/zap/zapcore"
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jsoniter "github.com/json-iterator/go"
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"go.uber.org/zap"
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"github.com/strimertul/strimertul/modules"
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"github.com/strimertul/strimertul/modules/database"
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"github.com/strimertul/strimertul/modules/http"
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"github.com/strimertul/strimertul/modules/loyalty"
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"github.com/strimertul/strimertul/modules/stulbe"
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"github.com/strimertul/strimertul/modules/twitch"
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"github.com/dgraph-io/badger/v3"
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"github.com/pkg/browser"
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_ "net/http/pprof"
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)
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const AppHeader = `
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_ _ _ O O _
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__| |_ _ _(_)_ __ ___ _ _| |_ _ _| |
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(_-< _| '_| | ' \/ -_) '_| _| || | |
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/__/\__|_| |_|_|_|_\___|_| \__|\_,_|_| `
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var appVersion = "v0.0.0-UNKNOWN"
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//go:embed frontend/dist/*
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var frontend embed.FS
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var logger *zap.Logger
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type ModuleConstructor = func(manager *modules.Manager) error
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var moduleList = map[modules.ModuleID]ModuleConstructor{
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modules.ModuleStulbe: stulbe.Register,
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modules.ModuleLoyalty: loyalty.Register,
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modules.ModuleTwitch: twitch.Register,
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}
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func main() {
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// Get cmd line parameters
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noHeader := flag.Bool("no-header", false, "Do not print the app header")
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dbDir := flag.String("database-dir", "data", "Path to strimertül database dir")
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debug := flag.Bool("debug", false, "Start in debug mode (more logging)")
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json := flag.Bool("json", false, "Print logging in JSON format")
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cleanup := flag.Bool("run-gc", false, "Run garbage collection and exit immediately after")
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exportDB := flag.Bool("export", false, "Export database as JSON")
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importDB := flag.String("import", "", "Import database from JSON file")
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restoreDB := flag.String("restore", "", "Restore database from backup file")
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backupDir := flag.String("backup-dir", "backups", "Path to directory with database backups")
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backupInterval := flag.Int("backup-interval", 60, "Backup database every X minutes, 0 to disable")
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flag.Parse()
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rand.Seed(time.Now().UnixNano())
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if *debug {
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cfg := zap.NewDevelopmentConfig()
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if *json {
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cfg.Encoding = "json"
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}
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logger, _ = cfg.Build()
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} else {
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cfg := zap.NewProductionConfig()
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if !*json {
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cfg.Encoding = "console"
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cfg.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
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cfg.EncoderConfig.CallerKey = zapcore.OmitKey
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}
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logger, _ = cfg.Build()
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}
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defer logger.Sync()
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undo := zap.RedirectStdLog(logger)
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defer undo()
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if !*noHeader {
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// Print the app header and version info
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_, _ = fmt.Fprintf(os.Stderr, "%s\n\n %s - %s/%s (%s)\n\n", AppHeader, appVersion, runtime.GOOS, runtime.GOARCH, runtime.Version())
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}
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// Create module manager
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manager := modules.NewManager(logger)
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// Loading routine
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db, err := database.Open(badger.DefaultOptions(*dbDir), manager)
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failOnError(err, "Could not open DB")
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defer func() {
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if err := db.Close(); err != nil {
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logger.Error("Could not close DB", zap.Error(err))
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}
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}()
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if *cleanup {
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// Run DB garbage collection until it's done
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var err error
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for err == nil {
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err = db.Client().RunValueLogGC(0.5)
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}
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return
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}
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if *exportDB {
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// Export database to stdout
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data, err := db.GetAll("")
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failOnError(err, "Could not export database")
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failOnError(jsoniter.ConfigFastest.NewEncoder(os.Stdout).Encode(data), "Could not encode database")
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return
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}
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if *importDB != "" {
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file, err := os.Open(*importDB)
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failOnError(err, "Could not open import file")
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var entries map[string]string
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err = jsoniter.ConfigFastest.NewDecoder(file).Decode(&entries)
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failOnError(err, "Could not decode import file")
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errors := 0
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imported := 0
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for key, value := range entries {
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err = db.PutKey(key, []byte(value))
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if err != nil {
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logger.Error("Could not import entry", zap.String("key", key), zap.Error(err))
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errors += 1
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} else {
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imported += 1
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}
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}
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_ = db.Client().Sync()
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logger.Info("Imported database from file", zap.Int("imported", imported), zap.Int("errors", errors))
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}
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if *restoreDB != "" {
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file, err := os.Open(*restoreDB)
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failOnError(err, "Could not open backup")
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err = db.RestoreOverwrite(file)
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failOnError(err, "Could not restore database")
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_ = db.Client().Sync()
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logger.Info("Restored database from backup")
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}
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// Set meta keys
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_ = db.PutKey("stul-meta/version", []byte(appVersion))
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runMigrations(db)
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for module, constructor := range moduleList {
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err := constructor(manager)
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if err != nil {
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logger.Error("Could not register module", zap.String("module", string(module)))
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} else {
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//goland:noinspection GoDeferInLoop
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defer func() {
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if err := manager.Modules[module].Close(); err != nil {
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logger.Error("Could not close module", zap.String("module", string(module)), zap.Error(err))
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}
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}()
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}
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}
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// Create logger and endpoints
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httpServer, err := http.NewServer(manager)
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failOnError(err, "Could not initialize http server")
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defer func() {
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if err := httpServer.Close(); err != nil {
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logger.Error("Could not close DB", zap.Error(err))
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}
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}()
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fedir, _ := fs.Sub(frontend, "frontend/dist")
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httpServer.SetFrontend(fedir)
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go func() {
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time.Sleep(time.Second) // THIS IS STUPID
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dashboardURL := fmt.Sprintf("http://%s/ui", httpServer.Config.Bind)
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err := browser.OpenURL(dashboardURL)
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if err != nil {
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logger.Warn(fmt.Sprintf("could not open browser, dashboard URL available at: %s", dashboardURL), zap.Error(err))
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}
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}()
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// Run garbage collection every once in a while
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go func() {
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ticker := time.NewTicker(15 * time.Minute)
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defer ticker.Stop()
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for range ticker.C {
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// Run DB garbage collection until it's done
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var err error
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for err == nil {
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err = db.Client().RunValueLogGC(0.5)
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}
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}
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}()
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// Backup database periodically
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go func() {
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if *backupDir == "" {
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logger.Warn("Backup directory not set, database backups are disabled (this is dangerous, power loss will result in your database being potentially wiped!)")
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return
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}
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err := os.MkdirAll(*backupDir, 0755)
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if err != nil {
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logger.Error("Could not create backup directory, moving to a temporary folder", zap.Error(err))
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*backupDir = os.TempDir()
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logger.Info("Using temporary directory", zap.String("backup-dir", *backupDir))
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return
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}
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ticker := time.NewTicker(time.Duration(*backupInterval) * time.Minute)
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defer ticker.Stop()
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for range ticker.C {
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// Run backup procedure
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file, err := os.Create(fmt.Sprintf("%s/%s.db", *backupDir, time.Now().Format("20060102-150405")))
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if err != nil {
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logger.Error("Could not create backup file", zap.Error(err))
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continue
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}
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_, err = db.Client().Backup(file, 0)
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if err != nil {
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logger.Error("Could not backup database", zap.Error(err))
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}
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_ = file.Close()
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logger.Info("Database backed up", zap.String("backup-file", file.Name()))
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}
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}()
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// Start HTTP server
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failOnError(httpServer.Listen(), "HTTP server stopped")
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}
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func failOnError(err error, text string) {
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if err != nil {
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fatalError(err, text)
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}
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}
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func fatalError(err error, text string) {
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log.Fatalf("FATAL ERROR OCCURRED: %s\n\n%s", text, err.Error())
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}
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