FEATURE: support dynamic metrics for config fields

pkg/bbgo/interact.go

@@ -565,7 +565,9 @@ func getStrategySignatures(exchangeStrategies map[string]SingleExchangeStrategy)
 
 // filterStrategies filters the exchange strategies by a filter tester function
 // if filter() returns true, the strategy will be added to the returned map.
-func filterStrategies(exchangeStrategies map[string]SingleExchangeStrategy, filter func(s SingleExchangeStrategy) bool) (map[string]SingleExchangeStrategy, error) {
+func filterStrategies(
+	exchangeStrategies map[string]SingleExchangeStrategy, filter func(s SingleExchangeStrategy) bool,
+) (map[string]SingleExchangeStrategy, error) {
 	retStrategies := make(map[string]SingleExchangeStrategy)
 	for signature, strategy := range exchangeStrategies {
 		if ok := filter(strategy); ok {
@@ -594,14 +596,18 @@ func testInterface(obj interface{}, checkType interface{}) bool {
 	return reflect.TypeOf(obj).Implements(rt)
 }
 
-func filterStrategiesByInterface(exchangeStrategies map[string]SingleExchangeStrategy, checkInterface interface{}) (map[string]SingleExchangeStrategy, error) {
+func filterStrategiesByInterface(
+	exchangeStrategies map[string]SingleExchangeStrategy, checkInterface interface{},
+) (map[string]SingleExchangeStrategy, error) {
 	rt := reflect.TypeOf(checkInterface).Elem()
 	return filterStrategies(exchangeStrategies, func(s SingleExchangeStrategy) bool {
 		return reflect.TypeOf(s).Implements(rt)
 	})
 }
 
-func filterStrategiesByField(exchangeStrategies map[string]SingleExchangeStrategy, fieldName string, fieldType reflect.Type) (map[string]SingleExchangeStrategy, error) {
+func filterStrategiesByField(
+	exchangeStrategies map[string]SingleExchangeStrategy, fieldName string, fieldType reflect.Type,
+) (map[string]SingleExchangeStrategy, error) {
 	return filterStrategies(exchangeStrategies, func(s SingleExchangeStrategy) bool {
 		r := reflect.ValueOf(s).Elem()
 		f := r.FieldByName(fieldName)

pkg/bbgo/trader.go

@@ -13,34 +13,20 @@ import (
 
 	"github.com/c9s/bbgo/pkg/dynamic"
 	"github.com/c9s/bbgo/pkg/interact"
+	"github.com/c9s/bbgo/pkg/types"
 )
 
-// Strategy method calls:
-// -> Defaults()     (optional method)
-//
-//	setup default static values from constants
-//
-// -> Initialize()   (optional method)
-//
-//	initialize dynamic runtime objects
-//
-// -> Subscribe()
-//
-//	register the subscriptions
-//
-// -> Validate()     (optional method)
-// -> Run()          (optional method)
-// -> Shutdown(shutdownCtx context.Context, wg *sync.WaitGroup)
-type StrategyID interface {
-	ID() string
-}
-
 // SingleExchangeStrategy represents the single Exchange strategy
 type SingleExchangeStrategy interface {
-	StrategyID
+	types.StrategyID
 	Run(ctx context.Context, orderExecutor OrderExecutor, session *ExchangeSession) error
 }
 
+type CrossExchangeStrategy interface {
+	types.StrategyID
+	CrossRun(ctx context.Context, orderExecutionRouter OrderExecutionRouter, sessions map[string]*ExchangeSession) error
+}
+
 // StrategyInitializer's Initialize method is called before the Subscribe method call.
 type StrategyInitializer interface {
 	Initialize() error
@@ -68,11 +54,6 @@ type CrossExchangeSessionSubscriber interface {
 	CrossSubscribe(sessions map[string]*ExchangeSession)
 }
 
-type CrossExchangeStrategy interface {
-	StrategyID
-	CrossRun(ctx context.Context, orderExecutionRouter OrderExecutionRouter, sessions map[string]*ExchangeSession) error
-}
-
 type Logging interface {
 	EnableLogging()
 	DisableLogging()
@@ -358,7 +339,7 @@ func (trader *Trader) Run(ctx context.Context) error {
 // It sets the default values and validates the strategy configurations.
 // And calls the Initialize method if the strategy implements the Initialize method.
 func (trader *Trader) Initialize(ctx context.Context) error {
-	return trader.IterateStrategies(func(strategy StrategyID) error {
+	return trader.IterateStrategies(func(strategy types.StrategyID) error {
 		if defaulter, ok := strategy.(StrategyDefaulter); ok {
 			if err := defaulter.Defaults(); err != nil {
 				return err
@@ -388,13 +369,13 @@ func (trader *Trader) LoadState(ctx context.Context) error {
 	ps := isolation.persistenceServiceFacade.Get()
 
 	log.Infof("loading strategies states...")
-	return trader.IterateStrategies(func(strategy StrategyID) error {
+	return trader.IterateStrategies(func(strategy types.StrategyID) error {
 		id := dynamic.CallID(strategy)
 		return loadPersistenceFields(strategy, id, ps)
 	})
 }
 
-func (trader *Trader) IterateStrategies(f func(st StrategyID) error) error {
+func (trader *Trader) IterateStrategies(f func(st types.StrategyID) error) error {
 	for _, strategies := range trader.exchangeStrategies {
 		for _, strategy := range strategies {
 			if err := f(strategy); err != nil {
@@ -423,7 +404,7 @@ func (trader *Trader) SaveState(ctx context.Context) error {
 	ps := isolation.persistenceServiceFacade.Get()
 
 	log.Debugf("saving strategy persistence states...")
-	return trader.IterateStrategies(func(strategy StrategyID) error {
+	return trader.IterateStrategies(func(strategy types.StrategyID) error {
 		id := dynamic.CallID(strategy)
 		if len(id) == 0 {
 			return nil

pkg/cmd/backtest.go

@@ -378,7 +378,7 @@ var BacktestCmd = &cobra.Command{
 			}
 
 			stateRecorder := backtest.NewStateRecorder(reportDir)
-			err = trader.IterateStrategies(func(st bbgo.StrategyID) error {
+			err = trader.IterateStrategies(func(st types.StrategyID) error {
 				return stateRecorder.Scan(st.(backtest.Instance))
 			})
 			if err != nil {

pkg/dynamic/metric.go

@@ -0,0 +1,114 @@
+package dynamic
+
+import (
+	"fmt"
+	"reflect"
+	"regexp"
+	"strings"
+
+	"github.com/prometheus/client_golang/prometheus"
+
+	"github.com/c9s/bbgo/pkg/fixedpoint"
+	"github.com/c9s/bbgo/pkg/types"
+)
+
+var dynamicStrategyConfigMetrics = map[string]any{}
+
+func InitializeConfigMetrics(id, instanceId string, s types.StrategyID) error {
+	matchFirstCapRE := regexp.MustCompile("(.)([A-Z][a-z]+)")
+
+	tv := reflect.TypeOf(s).Elem()
+	sv := reflect.Indirect(reflect.ValueOf(s))
+
+	symbolField := sv.FieldByName("Symbol")
+	hasSymbolField := symbolField.IsValid()
+
+nextStructField:
+	for i := 0; i < tv.NumField(); i++ {
+		field := tv.Field(i)
+		jsonTag := field.Tag.Get("json")
+		if jsonTag == "" {
+			continue nextStructField
+		}
+
+		tagAttrs := strings.Split(jsonTag, ",")
+		if len(tagAttrs) == 0 {
+			continue nextStructField
+		}
+
+		fieldName := tagAttrs[0]
+		fieldName = strings.ToLower(matchFirstCapRE.ReplaceAllString(fieldName, "${1}_${2}"))
+
+		isStr := false
+
+		val := 0.0
+		valInf := sv.Field(i).Interface()
+		switch tt := valInf.(type) {
+		case string:
+			isStr = true
+
+		case fixedpoint.Value:
+			val = tt.Float64()
+		case *fixedpoint.Value:
+			if tt != nil {
+				val = tt.Float64()
+			}
+		case float64:
+			val = tt
+		case int:
+			val = float64(tt)
+		case int32:
+			val = float64(tt)
+		case int64:
+			val = float64(tt)
+		case bool:
+			if tt {
+				val = 1.0
+			} else {
+				val = 0.0
+			}
+		default:
+			continue nextStructField
+		}
+
+		if isStr {
+			continue nextStructField
+		}
+
+		symbol := ""
+		if hasSymbolField {
+			symbol = symbolField.String()
+		}
+
+		metricName := id + "_config_" + fieldName
+		anyMetric, ok := dynamicStrategyConfigMetrics[metricName]
+		if !ok {
+			gaugeMetric := prometheus.NewGaugeVec(
+				prometheus.GaugeOpts{
+					Name: metricName,
+					Help: id + " config value of " + field.Name,
+				},
+				[]string{"strategy_type", "strategy_id", "symbol"},
+			)
+			if err := prometheus.Register(gaugeMetric); err != nil {
+				return fmt.Errorf("unable to register metrics on field %+v, error: %+v", field.Name, err)
+			}
+
+			anyMetric = gaugeMetric
+			dynamicStrategyConfigMetrics[metricName] = anyMetric
+		}
+
+		if anyMetric != nil {
+			switch metric := anyMetric.(type) {
+			case *prometheus.GaugeVec:
+				metric.With(prometheus.Labels{
+					"strategy_type": id,
+					"strategy_id":   instanceId,
+					"symbol":        symbol,
+				}).Set(val)
+			}
+		}
+	}
+
+	return nil
+}

pkg/strategy/liquiditymaker/strategy.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/c9s/bbgo/pkg/bbgo"
 	"github.com/c9s/bbgo/pkg/dbg"
+	"github.com/c9s/bbgo/pkg/dynamic"
 	"github.com/c9s/bbgo/pkg/fixedpoint"
 	indicatorv2 "github.com/c9s/bbgo/pkg/indicator/v2"
 	"github.com/c9s/bbgo/pkg/strategy/common"
@@ -200,6 +201,11 @@ func (s *Strategy) Run(ctx context.Context, _ bbgo.OrderExecutor, session *bbgo.
 		s.stopEMA = session.Indicators(s.Symbol).EMA(s.StopEMA.IntervalWindow)
 	}
 
+	instanceID := s.InstanceID()
+	if err := dynamic.InitializeConfigMetrics(ID, instanceID, s); err != nil {
+		return err
+	}
+
 	s.metricsLabels["exchange"] = session.ExchangeName.String()
 
 	s.orderGenerator = &LiquidityOrderGenerator{

pkg/strategy/xmaker/metrics.go

@@ -71,30 +71,6 @@ var aggregatedSignalMetrics = prometheus.NewGaugeVec(
 		Help: "",
 	}, []string{"strategy_type", "strategy_id", "exchange", "symbol"})
 
-var configNumOfLayersMetrics = prometheus.NewGaugeVec(
-	prometheus.GaugeOpts{
-		Name: "xmaker_config_num_of_layers",
-		Help: "",
-	}, []string{"strategy_type", "strategy_id", "symbol"})
-
-var configMaxExposureMetrics = prometheus.NewGaugeVec(
-	prometheus.GaugeOpts{
-		Name: "xmaker_config_max_exposure",
-		Help: "",
-	}, []string{"strategy_type", "strategy_id", "symbol"})
-
-var configBidMarginMetrics = prometheus.NewGaugeVec(
-	prometheus.GaugeOpts{
-		Name: "xmaker_config_bid_margin",
-		Help: "",
-	}, []string{"strategy_type", "strategy_id", "symbol"})
-
-var configAskMarginMetrics = prometheus.NewGaugeVec(
-	prometheus.GaugeOpts{
-		Name: "xmaker_config_ask_margin",
-		Help: "",
-	}, []string{"strategy_type", "strategy_id", "symbol"})
-
 var netProfitMarginHistogram = prometheus.NewHistogramVec(
 	prometheus.HistogramOpts{
 		Name:    "xmaker_net_profit_margin",
@@ -113,10 +89,6 @@ func init() {
 		aggregatedSignalMetrics,
 		cancelOrderDurationMetrics,
 		makerOrderPlacementDurationMetrics,
-		configNumOfLayersMetrics,
-		configMaxExposureMetrics,
-		configBidMarginMetrics,
-		configAskMarginMetrics,
 		delayedHedgeCounterMetrics,
 		delayedHedgeMaxDurationMetrics,
 		netProfitMarginHistogram,

pkg/strategy/xmaker/strategy.go

@@ -1884,6 +1884,10 @@ func (s *Strategy) CrossRun(
 	s.PrintConfig(configWriter, true, false)
 	s.logger.Infof("config: %s", configWriter.String())
 
+	if err := dynamic.InitializeConfigMetrics(ID, instanceID, s); err != nil {
+		return err
+	}
+
 	// configure sessions
 	sourceSession, ok := sessions[s.SourceExchange]
 	if !ok {
@@ -1926,21 +1930,13 @@ func (s *Strategy) CrossRun(
 	s.groupID = util.FNV32(instanceID)
 	s.logger.Infof("using group id %d from fnv(%s)", s.groupID, instanceID)
 
-	configLabels := prometheus.Labels{"strategy_id": s.InstanceID(), "strategy_type": ID, "symbol": s.Symbol}
-	configNumOfLayersMetrics.With(configLabels).Set(float64(s.NumLayers))
-	configMaxExposureMetrics.With(configLabels).Set(s.MaxExposurePosition.Float64())
-	configBidMarginMetrics.With(configLabels).Set(s.BidMargin.Float64())
-	configAskMarginMetrics.With(configLabels).Set(s.AskMargin.Float64())
-
 	if s.Position == nil {
 		s.Position = types.NewPositionFromMarket(s.makerMarket)
-		s.Position.Strategy = ID
-		s.Position.StrategyInstanceID = instanceID
-	} else {
-		s.Position.Strategy = ID
-		s.Position.StrategyInstanceID = instanceID
 	}
 
+	s.Position.Strategy = ID
+	s.Position.StrategyInstanceID = instanceID
+
 	if s.makerSession.MakerFeeRate.Sign() > 0 || s.makerSession.TakerFeeRate.Sign() > 0 {
 		s.Position.SetExchangeFeeRate(types.ExchangeName(s.MakerExchange), types.ExchangeFee{
 			MakerFeeRate: s.makerSession.MakerFeeRate,

pkg/types/strategy.go

@@ -0,0 +1,21 @@
+package types
+
+// Strategy method calls:
+// -> Defaults()     (optional method)
+//
+//	setup default static values from constants
+//
+// -> Initialize()   (optional method)
+//
+//	initialize dynamic runtime objects
+//
+// -> Subscribe()
+//
+//	register the subscriptions
+//
+// -> Validate()     (optional method)
+// -> Run()          (optional method)
+// -> Shutdown(shutdownCtx context.Context, wg *sync.WaitGroup)
+type StrategyID interface {
+	ID() string
+}