Permify /
permify
| Conditions | 46 |
| Total Lines | 363 |
| Code Lines | 223 |
| Lines | 0 |
| Ratio | 0 % |
| Changes | 0 | ||
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
Complex classes like cmd.serve often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
| 1 | package cmd |
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| 136 | func serve() func(cmd *cobra.Command, args []string) error { |
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| 137 | return func(cmd *cobra.Command, args []string) error { |
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| 138 | var cfg *config.Config |
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| 139 | var err error |
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| 140 | cfgFile := viper.GetString("config.file") |
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| 141 | if cfgFile != "" { |
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| 142 | cfg, err = config.NewConfigWithFile(cfgFile) |
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| 143 | if err != nil { |
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| 144 | return fmt.Errorf("failed to create new config: %w", err) |
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| 145 | } |
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| 146 | |||
| 147 | if err = viper.Unmarshal(cfg); err != nil { |
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| 148 | return fmt.Errorf("failed to unmarshal config: %w", err) |
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| 149 | } |
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| 150 | } else { |
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| 151 | // Load configuration |
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| 152 | cfg, err = config.NewConfig() |
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| 153 | if err != nil { |
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| 154 | return fmt.Errorf("failed to create new config: %w", err) |
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| 155 | } |
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| 156 | |||
| 157 | if err = viper.Unmarshal(cfg); err != nil { |
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| 158 | return fmt.Errorf("failed to unmarshal config: %w", err) |
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| 159 | } |
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| 160 | } |
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| 161 | |||
| 162 | // Print banner and initialize logger |
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| 163 | internal.PrintBanner() |
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| 164 | |||
| 165 | var handler slog.Handler |
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| 166 | switch cfg.Log.Output { |
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| 167 | case "json": |
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| 168 | handler = slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{ |
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| 169 | Level: getLogLevel(cfg.Log.Level), |
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| 170 | }) |
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| 171 | case "text": |
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| 172 | handler = slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{ |
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| 173 | Level: getLogLevel(cfg.Log.Level), |
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| 174 | }) |
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| 175 | default: |
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| 176 | handler = slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{ |
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| 177 | Level: getLogLevel(cfg.Log.Level), |
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| 178 | }) |
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| 179 | } |
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| 180 | |||
| 181 | logger := slog.New(handler) |
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| 182 | |||
| 183 | slog.SetDefault(logger) |
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| 184 | |||
| 185 | slog.Info("🚀 starting permify service...") |
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| 186 | |||
| 187 | internal.Identifier = cfg.AccountID |
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| 188 | if internal.Identifier == "" { |
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| 189 | message := "Account ID is not set. Please fill in the Account ID for better support. Get your Account ID from https://permify.co/account" |
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| 190 | slog.Error(message) |
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| 191 | |||
| 192 | ticker := time.NewTicker(24 * time.Hour) |
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| 193 | defer ticker.Stop() |
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| 194 | |||
| 195 | go func() { |
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| 196 | for range ticker.C { |
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| 197 | slog.Error(message) |
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| 198 | } |
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| 199 | }() |
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| 200 | } |
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| 201 | |||
| 202 | // Set up context and signal handling |
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| 203 | ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM) |
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| 204 | defer stop() |
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| 205 | |||
| 206 | // Run database migration if enabled |
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| 207 | if cfg.Database.AutoMigrate { |
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| 208 | err = storage.Migrate(cfg.Database) |
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| 209 | if err != nil { |
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| 210 | slog.Error("failed to migrate database", slog.Any("error", err)) |
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| 211 | } |
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| 212 | } |
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| 213 | |||
| 214 | // Initialize database |
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| 215 | db, err := factories.DatabaseFactory(cfg.Database) |
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| 216 | if err != nil { |
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| 217 | slog.Error("failed to initialize database", slog.Any("error", err)) |
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| 218 | return err |
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| 219 | } |
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| 220 | defer func() { |
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| 221 | if err = db.Close(); err != nil { |
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| 222 | slog.Error("failed to close database", slog.Any("error", err)) |
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| 223 | } |
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| 224 | }() |
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| 225 | |||
| 226 | // Tracing |
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| 227 | if cfg.Tracer.Enabled { |
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| 228 | headers := map[string]string{} |
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| 229 | for _, header := range cfg.Tracer.Headers { |
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| 230 | h := strings.Split(header, ":") |
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| 231 | if len(h) != 2 { |
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| 232 | return errors.New("invalid header format; expected 'key:value'") |
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| 233 | } |
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| 234 | headers[h[0]] = h[1] |
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| 235 | } |
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| 236 | |||
| 237 | var exporter trace.SpanExporter |
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| 238 | exporter, err = tracerexporters.ExporterFactory( |
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| 239 | cfg.Tracer.Exporter, |
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| 240 | cfg.Tracer.Endpoint, |
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| 241 | cfg.Tracer.Insecure, |
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| 242 | cfg.Tracer.URLPath, |
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| 243 | headers, |
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| 244 | ) |
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| 245 | if err != nil { |
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| 246 | slog.Error(err.Error()) |
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| 247 | } |
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| 248 | |||
| 249 | shutdown := telemetry.NewTracer(exporter) |
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| 250 | |||
| 251 | defer func() { |
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| 252 | if err = shutdown(context.Background()); err != nil { |
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| 253 | slog.Error(err.Error()) |
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| 254 | } |
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| 255 | }() |
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| 256 | } |
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| 257 | |||
| 258 | // Garbage collection |
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| 259 | if cfg.Database.GarbageCollection.Timeout > 0 && cfg.Database.GarbageCollection.Enabled && cfg.Database.Engine != "memory" { |
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| 260 | slog.Info("🗑️ starting database garbage collection...") |
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| 261 | |||
| 262 | garbageCollector := gc.NewGC( |
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| 263 | db.(*PQDatabase.Postgres), |
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| 264 | gc.Interval(cfg.Database.GarbageCollection.Interval), |
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| 265 | gc.Window(cfg.Database.GarbageCollection.Window), |
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| 266 | gc.Timeout(cfg.Database.GarbageCollection.Timeout), |
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| 267 | ) |
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| 268 | |||
| 269 | go func() { |
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| 270 | err = garbageCollector.Start(ctx) |
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| 271 | if err != nil { |
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| 272 | slog.Error(err.Error()) |
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| 273 | } |
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| 274 | }() |
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| 275 | } |
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| 276 | |||
| 277 | // Meter |
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| 278 | meter := telemetry.NewNoopMeter() |
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| 279 | if cfg.Meter.Enabled { |
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| 280 | headers := map[string]string{} |
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| 281 | for _, header := range cfg.Meter.Headers { |
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| 282 | h := strings.Split(header, ":") |
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| 283 | if len(h) != 2 { |
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| 284 | return errors.New("invalid header format; expected 'key:value'") |
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| 285 | } |
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| 286 | headers[h[0]] = h[1] |
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| 287 | } |
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| 288 | |||
| 289 | var exporter metric.Exporter |
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| 290 | exporter, err = meterexporters.ExporterFactory( |
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| 291 | cfg.Meter.Exporter, |
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| 292 | cfg.Meter.Endpoint, |
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| 293 | cfg.Meter.Insecure, |
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| 294 | cfg.Meter.URLPath, |
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| 295 | headers, |
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| 296 | ) |
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| 297 | if err != nil { |
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| 298 | slog.Error(err.Error()) |
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| 299 | } |
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| 300 | |||
| 301 | meter, err = telemetry.NewMeter(exporter) |
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| 302 | if err != nil { |
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| 303 | slog.Error(err.Error()) |
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| 304 | } |
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| 305 | } |
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| 306 | |||
| 307 | // schema cache |
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| 308 | var schemaCache pkgcache.Cache |
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| 309 | schemaCache, err = ristretto.New(ristretto.NumberOfCounters(cfg.Service.Schema.Cache.NumberOfCounters), ristretto.MaxCost(cfg.Service.Schema.Cache.MaxCost)) |
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| 310 | if err != nil { |
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| 311 | slog.Error(err.Error()) |
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| 312 | return err |
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| 313 | } |
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| 314 | |||
| 315 | // engines cache cache |
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| 316 | var engineKeyCache pkgcache.Cache |
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| 317 | engineKeyCache, err = ristretto.New(ristretto.NumberOfCounters(cfg.Service.Permission.Cache.NumberOfCounters), ristretto.MaxCost(cfg.Service.Permission.Cache.MaxCost)) |
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| 318 | if err != nil { |
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| 319 | slog.Error(err.Error()) |
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| 320 | return err |
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| 321 | } |
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| 322 | |||
| 323 | watcher := storage.NewNoopWatcher() |
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| 324 | if cfg.Service.Watch.Enabled { |
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| 325 | watcher = factories.WatcherFactory(db) |
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| 326 | } |
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| 327 | |||
| 328 | // Initialize the storage with factory methods |
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| 329 | dataReader := factories.DataReaderFactory(db) |
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| 330 | dataWriter := factories.DataWriterFactory(db) |
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| 331 | bundleReader := factories.BundleReaderFactory(db) |
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| 332 | bundleWriter := factories.BundleWriterFactory(db) |
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| 333 | schemaReader := factories.SchemaReaderFactory(db) |
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| 334 | schemaWriter := factories.SchemaWriterFactory(db) |
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| 335 | tenantReader := factories.TenantReaderFactory(db) |
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| 336 | tenantWriter := factories.TenantWriterFactory(db) |
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| 337 | |||
| 338 | // Add caching to the schema reader using a decorator |
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| 339 | schemaReader = cacheDecorator.NewSchemaReader(schemaReader, schemaCache) |
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| 340 | |||
| 341 | dataReader = sfDecorator.NewDataReader(dataReader) |
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| 342 | schemaReader = sfDecorator.NewSchemaReader(schemaReader) |
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| 343 | |||
| 344 | // Check if circuit breaker should be enabled for services |
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| 345 | if cfg.Service.CircuitBreaker { |
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| 346 | var cb *gobreaker.CircuitBreaker |
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| 347 | var st gobreaker.Settings |
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| 348 | st.Name = "storage" |
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| 349 | st.ReadyToTrip = func(counts gobreaker.Counts) bool { |
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| 350 | failureRatio := float64(counts.TotalFailures) / float64(counts.Requests) |
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| 351 | return counts.Requests >= 10 && failureRatio >= 0.6 |
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| 352 | } |
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| 353 | |||
| 354 | cb = gobreaker.NewCircuitBreaker(st) |
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| 355 | |||
| 356 | // Add circuit breaker to the relationship reader using decorator |
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| 357 | dataReader = cbDecorator.NewDataReader(dataReader, cb) |
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| 358 | |||
| 359 | // Add circuit breaker to the bundle reader using decorators |
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| 360 | bundleReader = cbDecorator.NewBundleReader(bundleReader, cb) |
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| 361 | |||
| 362 | // Add circuit breaker to the schema reader using decorator |
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| 363 | schemaReader = cbDecorator.NewSchemaReader(schemaReader, cb) |
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| 364 | |||
| 365 | // Add circuit breaker to the tenant reader using decorator |
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| 366 | tenantReader = cbDecorator.NewTenantReader(tenantReader, cb) |
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| 367 | } |
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| 368 | |||
| 369 | // Initialize the engines using the key manager, schema reader, and relationship reader |
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| 370 | checkEngine := engines.NewCheckEngine(schemaReader, dataReader, engines.CheckConcurrencyLimit(cfg.Service.Permission.ConcurrencyLimit)) |
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| 371 | expandEngine := engines.NewExpandEngine(schemaReader, dataReader) |
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| 372 | |||
| 373 | // Declare a variable `checker` of type `invoke.Check`. |
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| 374 | var checker invoke.Check |
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| 375 | |||
| 376 | // Create the checker either with load balancing or caching capabilities. |
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| 377 | if cfg.Distributed.Enabled { |
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| 378 | |||
| 379 | if cfg.Authn.Enabled && cfg.Authn.Method == "oidc" { |
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| 380 | return errors.New("OIDC authentication method cannot be used in distributed mode. Please check your configuration") |
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| 381 | } |
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| 382 | |||
| 383 | checker, err = balancer.NewCheckEngineWithBalancer( |
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| 384 | context.Background(), |
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| 385 | checkEngine, |
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| 386 | schemaReader, |
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| 387 | &cfg.Distributed, |
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| 388 | &cfg.Server.GRPC, |
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| 389 | &cfg.Authn, |
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| 390 | ) |
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| 391 | // Handle potential error during checker creation. |
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| 392 | if err != nil { |
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| 393 | return err |
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| 394 | } |
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| 395 | checker = cache.NewCheckEngineWithCache( |
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| 396 | checker, |
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| 397 | schemaReader, |
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| 398 | engineKeyCache, |
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| 399 | meter, |
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| 400 | ) |
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| 401 | } else { |
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| 402 | checker = cache.NewCheckEngineWithCache( |
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| 403 | checkEngine, |
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| 404 | schemaReader, |
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| 405 | engineKeyCache, |
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| 406 | meter, |
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| 407 | ) |
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| 408 | } |
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| 409 | |||
| 410 | // Create a localChecker which directly checks without considering distributed setup. |
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| 411 | // This also includes caching capabilities. |
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| 412 | localChecker := cache.NewCheckEngineWithCache( |
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| 413 | checkEngine, |
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| 414 | schemaReader, |
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| 415 | engineKeyCache, |
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| 416 | meter, |
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| 417 | ) |
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| 418 | |||
| 419 | // Initialize the lookupEngine, which is responsible for looking up certain entities or values. |
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| 420 | lookupEngine := engines.NewLookupEngine( |
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| 421 | checker, |
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| 422 | schemaReader, |
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| 423 | dataReader, |
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| 424 | // Set concurrency limit based on the configuration. |
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| 425 | engines.LookupConcurrencyLimit(cfg.Service.Permission.BulkLimit), |
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| 426 | ) |
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| 427 | |||
| 428 | // Initialize the subjectPermissionEngine, responsible for handling subject permissions. |
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| 429 | subjectPermissionEngine := engines.NewSubjectPermission( |
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| 430 | checker, |
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| 431 | schemaReader, |
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| 432 | // Set concurrency limit for the subject permission checks. |
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| 433 | engines.SubjectPermissionConcurrencyLimit(cfg.Service.Permission.ConcurrencyLimit), |
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| 434 | ) |
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| 435 | |||
| 436 | // Create a new invoker that is used to directly call various functions or engines. |
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| 437 | // It encompasses the schema, data, checker, and other engines. |
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| 438 | invoker := invoke.NewDirectInvoker( |
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| 439 | schemaReader, |
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| 440 | dataReader, |
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| 441 | checker, |
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| 442 | expandEngine, |
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| 443 | lookupEngine, |
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| 444 | subjectPermissionEngine, |
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| 445 | meter, |
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| 446 | ) |
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| 447 | |||
| 448 | // Associate the invoker with the checkEngine. |
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| 449 | checkEngine.SetInvoker(invoker) |
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| 450 | |||
| 451 | // Create a local invoker for local operations. |
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| 452 | localInvoker := invoke.NewDirectInvoker( |
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| 453 | schemaReader, |
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| 454 | dataReader, |
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| 455 | localChecker, |
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| 456 | expandEngine, |
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| 457 | lookupEngine, |
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| 458 | subjectPermissionEngine, |
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| 459 | meter, |
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| 460 | ) |
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| 461 | |||
| 462 | // Initialize the container which brings together multiple components such as the invoker, data readers/writers, and schema handlers. |
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| 463 | container := servers.NewContainer( |
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| 464 | invoker, |
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| 465 | dataReader, |
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| 466 | dataWriter, |
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| 467 | bundleReader, |
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| 468 | bundleWriter, |
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| 469 | schemaReader, |
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| 470 | schemaWriter, |
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| 471 | tenantReader, |
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| 472 | tenantWriter, |
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| 473 | watcher, |
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| 474 | ) |
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| 475 | |||
| 476 | // Create an error group with the provided context |
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| 477 | var g *errgroup.Group |
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| 478 | g, ctx = errgroup.WithContext(ctx) |
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| 479 | |||
| 480 | // Add the container.Run function to the error group |
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| 481 | g.Go(func() error { |
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| 482 | return container.Run( |
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| 483 | ctx, |
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| 484 | &cfg.Server, |
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| 485 | logger, |
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| 486 | &cfg.Distributed, |
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| 487 | &cfg.Authn, |
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| 488 | &cfg.Profiler, |
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| 489 | localInvoker, |
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| 490 | ) |
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| 491 | }) |
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| 492 | |||
| 493 | // Wait for the error group to finish and log any errors |
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| 494 | if err = g.Wait(); err != nil { |
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| 495 | slog.Error(err.Error()) |
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| 496 | } |
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| 497 | |||
| 498 | return nil |
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| 499 | } |
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| 517 |
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