Add --db-max-handles (#1587)

cmd/juno/juno.go

@@ -63,6 +63,7 @@ const (
 	remoteDBF            = "remote-db"
 	rpcMaxBlockScanF     = "rpc-max-block-scan"
 	dbCacheSizeF         = "db-cache-size"
+	dbMaxHandlesF        = "db-max-handles"
 	gwAPIKeyF            = "gw-api-key" //nolint: gosec
 
 	defaultConfig              = ""
@@ -86,6 +87,7 @@ const (
 	defaultRemoteDB            = ""
 	defaultRPCMaxBlockScan     = math.MaxUint
 	defaultCacheSizeMb         = 8
+	defaultMaxHandles          = 1024
 	defaultGwAPIKey            = ""
 
 	configFlagUsage   = "The yaml configuration file."
@@ -119,6 +121,7 @@ const (
 	remoteDBUsage            = "gRPC URL of a remote Juno node"
 	rpcMaxBlockScanUsage     = "Maximum number of blocks scanned in single starknet_getEvents call"
 	dbCacheSizeUsage         = "Determines the amount of memory (in megabytes) allocated for caching data in the database."
+	dbMaxHandlesUsage        = "A soft limit on the number of open files that can be used by the DB"
 	gwAPIKeyUsage            = "API key for gateway endpoints to avoid throttling" //nolint: gosec
 )
 
@@ -249,6 +252,7 @@ func NewCmd(config *node.Config, run func(*cobra.Command, []string) error) *cobr
 	junoCmd.Flags().Uint(rpcMaxBlockScanF, defaultRPCMaxBlockScan, rpcMaxBlockScanUsage)
 	junoCmd.Flags().Uint(dbCacheSizeF, defaultCacheSizeMb, dbCacheSizeUsage)
 	junoCmd.Flags().String(gwAPIKeyF, defaultGwAPIKey, gwAPIKeyUsage)
+	junoCmd.Flags().Int(dbMaxHandlesF, defaultMaxHandles, dbMaxHandlesUsage)
 
 	return junoCmd
 }

cmd/juno/juno_test.go

@@ -46,6 +46,7 @@ func TestConfigPrecedence(t *testing.T) {
 	defaultMaxVMs := uint(3 * runtime.GOMAXPROCS(0))
 	defaultRPCMaxBlockScan := uint(math.MaxUint)
 	defaultMaxCacheSize := uint(8)
+	defaultMaxHandles := 1024
 
 	tests := map[string]struct {
 		cfgFile         bool
@@ -82,6 +83,7 @@ func TestConfigPrecedence(t *testing.T) {
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"config file path is empty string": {
@@ -111,6 +113,7 @@ func TestConfigPrecedence(t *testing.T) {
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"config file doesn't exist": {
@@ -145,6 +148,7 @@ func TestConfigPrecedence(t *testing.T) {
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"config file with all settings but without any other flags": {
@@ -181,6 +185,7 @@ pprof: true
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"config file with some settings but without any other flags": {
@@ -214,6 +219,7 @@ http-port: 4576
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"all flags without config file": {
@@ -245,6 +251,7 @@ http-port: 4576
 				MaxVMQueue:      2 * defaultMaxVMs,
 				RPCMaxBlockScan: defaultRPCMaxBlockScan,
 				DBCacheSize:     defaultMaxCacheSize,
+				DBMaxHandles:    defaultMaxHandles,
 			},
 		},
 		"some flags without config file": {
@@ -277,6 +284,7 @@ http-port: 4576
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"all setting set in both config file and flags": {
@@ -333,6 +341,7 @@ db-cache-size: 8
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         9,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"some setting set in both config file and flags": {
@@ -368,6 +377,7 @@ network: goerli
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"some setting set in default, config file and flags": {
@@ -399,6 +409,7 @@ network: goerli
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"only set env variables": {
@@ -428,6 +439,7 @@ network: goerli
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"some setting set in both env variables and flags": {
@@ -458,6 +470,7 @@ network: goerli
 				MaxVMQueue:          2 * defaultMaxVMs,
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 		"some setting set in both env variables and config file": {
@@ -489,6 +502,7 @@ network: goerli
 				RPCMaxBlockScan:     defaultRPCMaxBlockScan,
 				DBCacheSize:         defaultMaxCacheSize,
 				GatewayAPIKey:       "apikey",
+				DBMaxHandles:        defaultMaxHandles,
 			},
 		},
 	}

db/pebble/db.go

@@ -25,14 +25,15 @@ type DB struct {
 }
 
 // New opens a new database at the given path
-func New(path string, cache uint, logger pebble.Logger) (db.DB, error) {
+func New(path string, cache uint, maxOpenFiles int, logger pebble.Logger) (db.DB, error) {
 	// Ensure that the specified cache size meets a minimum threshold.
 	if cache < minCache {
 		cache = minCache
 	}
 	pDB, err := newPebble(path, &pebble.Options{
-		Logger: logger,
-		Cache:  pebble.NewCache(int64(cache * megabyte)),
+		Logger:       logger,
+		Cache:        pebble.NewCache(int64(cache * megabyte)),
+		MaxOpenFiles: maxOpenFiles,
 	})
 	if err != nil {
 		return nil, err

node/node.go

@@ -77,7 +77,8 @@ type Config struct {
 	MaxVMQueue      uint `mapstructure:"max-vm-queue"`
 	RPCMaxBlockScan uint `mapstructure:"rpc-max-block-scan"`
 
-	DBCacheSize uint `mapstructure:"db-cache-size"`
+	DBCacheSize  uint `mapstructure:"db-cache-size"`
+	DBMaxHandles int  `mapstructure:"db-max-handles"`
 
 	GatewayAPIKey string `mapstructure:"gw-api-key"`
 }
@@ -111,7 +112,7 @@ func New(cfg *Config, version string) (*Node, error) { //nolint:gocyclo,funlen
 	if dbIsRemote {
 		database, err = remote.New(cfg.RemoteDB, context.TODO(), log, grpc.WithTransportCredentials(insecure.NewCredentials()))
 	} else {
-		database, err = pebble.New(cfg.DatabasePath, cfg.DBCacheSize, dbLog)
+		database, err = pebble.New(cfg.DatabasePath, cfg.DBCacheSize, cfg.DBMaxHandles, dbLog)
 	}
 	if err != nil {
 		return nil, fmt.Errorf("open DB: %w", err)

node/node_test.go

@@ -67,7 +67,7 @@ func TestNetworkVerificationOnNonEmptyDB(t *testing.T) {
 		t.Run(description, func(t *testing.T) {
 			dbPath := t.TempDir()
 			log := utils.NewNopZapLogger()
-			database, err := pebble.New(dbPath, 1, log)
+			database, err := pebble.New(dbPath, 1, 1, log)
 			require.NoError(t, err)
 			chain := blockchain.New(database, network, log)
 			syncer := sync.New(chain, adaptfeeder.New(feeder.NewTestClient(t, network)), log, 0, false)