feature: withdraw print config functionality from drift to be a general function

pkg/bbgo/exit.go

@@ -1,6 +1,8 @@
 package bbgo
 
 import (
+	"bytes"
+	"encoding/json"
 	"reflect"
 
 	"github.com/pkg/errors"
@@ -35,6 +37,47 @@ type ExitMethod struct {
 	TrailingStop              *TrailingStop2             `json:"trailingStop"`
 }
 
+func (e ExitMethod) String() string {
+	var buf bytes.Buffer
+	if e.RoiStopLoss != nil {
+		b, _ := json.Marshal(e.RoiStopLoss)
+		if string(b) != "null" {
+			buf.WriteString("roiStopLoss: " + string(b) + ", ")
+		}
+	}
+	if e.ProtectiveStopLoss != nil {
+		b, _ := json.Marshal(e.ProtectiveStopLoss)
+		if string(b) != "null" {
+			buf.WriteString("protectiveStopLoss: " + string(b) + ", ")
+		}
+	}
+	if e.RoiTakeProfit != nil {
+		b, _ := json.Marshal(e.RoiTakeProfit)
+		if string(b) != "null" {
+			buf.WriteString("rioTakeProft: " + string(b) + ", ")
+		}
+	}
+	if e.LowerShadowTakeProfit == nil {
+		b, _ := json.Marshal(e.LowerShadowTakeProfit)
+		if string(b) != "null" {
+			buf.WriteString("lowerShadowTakeProft: " + string(b) + ", ")
+		}
+	}
+	if e.CumulatedVolumeTakeProfit == nil {
+		b, _ := json.Marshal(e.CumulatedVolumeTakeProfit)
+		if string(b) != "null" {
+			buf.WriteString("cumulatedVolumeTakeProfit: " + string(b) + ", ")
+		}
+	}
+	if e.TrailingStop == nil {
+		b, _ := json.Marshal(e.TrailingStop)
+		if string(b) != "null" {
+			buf.WriteString("trailingStop: " + string(b) + ", ")
+		}
+	}
+	return buf.String()
+}
+
 // Inherit is used for inheriting properties from the given strategy struct
 // for example, some exit method requires the default interval and symbol name from the strategy param object
 func (m *ExitMethod) Inherit(parent interface{}) {

pkg/bbgo/interact.go

@@ -526,7 +526,7 @@ func (it *CoreInteraction) Initialize() error {
 // getStrategySignature returns strategy instance unique signature
 func getStrategySignature(strategy SingleExchangeStrategy) (string, error) {
 	// Returns instance ID
-	var signature = callID(strategy)
+	var signature = CallID(strategy)
 	if signature != "" {
 		return signature, nil
 	}

pkg/bbgo/persistence.go

@@ -82,7 +82,7 @@ func (p *Persistence) Save(val interface{}, subIDs ...string) error {
 }
 
 func (p *Persistence) Sync(obj interface{}) error {
-	id := callID(obj)
+	id := CallID(obj)
 	if len(id) == 0 {
 		return nil
 	}
@@ -93,7 +93,7 @@ func (p *Persistence) Sync(obj interface{}) error {
 
 // Sync syncs the object properties into the persistence layer
 func Sync(obj interface{}) {
-	id := callID(obj)
+	id := CallID(obj)
 	if len(id) == 0 {
 		log.Warnf("InstanceID() is not provided, can not sync persistence")
 		return

pkg/bbgo/persistence_test.go

@@ -21,7 +21,6 @@ func (s *TestStructWithoutInstanceID) ID() string {
 	return "test-struct-no-instance-id"
 }
 
-
 type TestStruct struct {
 	*Environment
 
@@ -56,15 +55,15 @@ func preparePersistentServices() []service.PersistenceService {
 	return pss
 }
 
-func Test_callID(t *testing.T) {
+func Test_CallID(t *testing.T) {
 	t.Run("default", func(t *testing.T) {
-		id := callID(&TestStruct{})
+		id := CallID(&TestStruct{})
 		assert.NotEmpty(t, id)
 		assert.Equal(t, "test-struct", id)
 	})
 
 	t.Run("fallback", func(t *testing.T) {
-		id := callID(&TestStructWithoutInstanceID{Symbol: "BTCUSDT"})
+		id := CallID(&TestStructWithoutInstanceID{Symbol: "BTCUSDT"})
 		assert.Equal(t, "test-struct-no-instance-id:BTCUSDT", id)
 	})
 }
@@ -122,7 +121,7 @@ func Test_storePersistenceFields(t *testing.T) {
 	for _, ps := range pss {
 		psName := reflect.TypeOf(ps).Elem().String()
 		t.Run("all/"+psName, func(t *testing.T) {
-			id := callID(a)
+			id := CallID(a)
 			err := storePersistenceFields(a, id, ps)
 			assert.NoError(t, err)
 

pkg/bbgo/reflect.go

@@ -10,7 +10,7 @@ type InstanceIDProvider interface {
 	InstanceID() string
 }
 
-func callID(obj interface{}) string {
+func CallID(obj interface{}) string {
 	sv := reflect.ValueOf(obj)
 	st := reflect.TypeOf(obj)
 	if st.Implements(reflect.TypeOf((*InstanceIDProvider)(nil)).Elem()) {
@@ -30,4 +30,3 @@ func callID(obj interface{}) string {
 	ret := m.Call(nil)
 	return ret[0].String() + ":"
 }
-

pkg/bbgo/trader.go

@@ -384,7 +384,7 @@ func (trader *Trader) LoadState() error {
 	log.Infof("loading strategies states...")
 
 	return trader.IterateStrategies(func(strategy StrategyID) error {
-		id := callID(strategy)
+		id := CallID(strategy)
 		return loadPersistenceFields(strategy, id, ps)
 	})
 }
@@ -420,7 +420,7 @@ func (trader *Trader) SaveState() error {
 
 	log.Infof("saving strategies states...")
 	return trader.IterateStrategies(func(strategy StrategyID) error {
-		id := callID(strategy)
+		id := CallID(strategy)
 		if len(id) == 0 {
 			return nil
 		}

pkg/strategy/drift/output.go

@@ -4,14 +4,10 @@ import (
 	"fmt"
 	"io"
 	"reflect"
-	"sort"
-	"strings"
 	"unsafe"
 
-	"github.com/c9s/bbgo/pkg/util"
-	"github.com/fatih/color"
+	"github.com/c9s/bbgo/pkg/strategy"
 	"github.com/jedib0t/go-pretty/v6/table"
-	"github.com/jedib0t/go-pretty/v6/text"
 )
 
 type jsonStruct struct {
@@ -26,6 +22,16 @@ func (a jsonArr) Len() int           { return len(a) }
 func (a jsonArr) Less(i, j int) bool { return a[i].key < a[j].key }
 func (a jsonArr) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
 
+func canInt(v reflect.Value) bool {
+	k := v.Type().Kind()
+	switch k {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return true
+	default:
+		return false
+	}
+}
+
 func (s *Strategy) ParamDump(f io.Writer, seriesLength ...int) {
 	length := 1
 	if len(seriesLength) > 0 && seriesLength[0] > 0 {
@@ -75,7 +81,7 @@ func (s *Strategy) ParamDump(f io.Writer, seriesLength ...int) {
 			}
 		} else if canString {
 			fmt.Fprintf(f, "%s: %s\n", fieldName, stringFunc.Call(nil)[0].String())
-		} else if field.CanConvert(reflect.TypeOf(int(0))) {
+		} else if canInt(field) {
 			fmt.Fprintf(f, "%s: %d\n", fieldName, field.Int())
 		} else if field.CanConvert(reflect.TypeOf(float64(0))) {
 			fmt.Fprintf(f, "%s: %.4f\n", fieldName, field.Float())
@@ -107,104 +113,9 @@ func (s *Strategy) ParamDump(f io.Writer, seriesLength ...int) {
 }
 
 func (s *Strategy) Print(f io.Writer, pretty bool, withColor ...bool) {
-	//b, _ := json.MarshalIndent(s.ExitMethods, "  ", "  ")
-
-	t := table.NewWriter()
-	style := table.Style{
-		Name:    "StyleRounded",
-		Box:     table.StyleBoxRounded,
-		Color:   table.ColorOptionsDefault,
-		Format:  table.FormatOptionsDefault,
-		HTML:    table.DefaultHTMLOptions,
-		Options: table.OptionsDefault,
-		Title:   table.TitleOptionsDefault,
-	}
-	var hiyellow func(io.Writer, string, ...interface{})
-	if len(withColor) > 0 && withColor[0] {
-		if pretty {
-			style.Color = table.ColorOptionsYellowWhiteOnBlack
-			style.Color.Row = text.Colors{text.FgHiYellow, text.BgHiBlack}
-			style.Color.RowAlternate = text.Colors{text.FgYellow, text.BgBlack}
-		}
-		hiyellow = color.New(color.FgHiYellow).FprintfFunc()
-	} else {
-		hiyellow = func(a io.Writer, format string, args ...interface{}) {
-			fmt.Fprintf(a, format, args...)
-		}
-	}
+	var style *table.Style
 	if pretty {
-		t.SetOutputMirror(f)
-		t.SetStyle(style)
-		t.AppendHeader(table.Row{"json", "struct field name", "type", "value"})
-	}
-	hiyellow(f, "------ %s Settings ------\n", s.InstanceID())
-
-	embeddedWhiteSet := map[string]struct{}{"Window": {}, "Interval": {}, "Symbol": {}}
-	redundantSet := map[string]struct{}{}
-	var rows []table.Row
-	val := reflect.ValueOf(*s)
-	var values jsonArr
-	for i := 0; i < val.Type().NumField(); i++ {
-		t := val.Type().Field(i)
-		if !t.IsExported() {
-			continue
-		}
-		fieldName := t.Name
-		switch jsonTag := t.Tag.Get("json"); jsonTag {
-		case "-":
-		case "":
-			if t.Anonymous {
-				var target reflect.Type
-				if t.Type.Kind() == util.Pointer {
-					target = t.Type.Elem()
-				} else {
-					target = t.Type
-				}
-				for j := 0; j < target.NumField(); j++ {
-					tt := target.Field(j)
-					if !tt.IsExported() {
-						continue
-					}
-					fieldName := tt.Name
-					if _, ok := embeddedWhiteSet[fieldName]; !ok {
-						continue
-					}
-
-					if jtag := tt.Tag.Get("json"); jtag != "" && jtag != "-" {
-						name := strings.Split(jtag, ",")[0]
-						if _, ok := redundantSet[name]; ok {
-							continue
-						}
-						redundantSet[name] = struct{}{}
-						var value interface{}
-						if t.Type.Kind() == util.Pointer {
-							value = val.Field(i).Elem().Field(j).Interface()
-						} else {
-							value = val.Field(i).Field(j).Interface()
-						}
-						values = append(values, jsonStruct{key: fieldName, json: name, tp: tt.Type.String(), value: value})
-					}
-				}
-			}
-		default:
-			name := strings.Split(jsonTag, ",")[0]
-			if _, ok := redundantSet[name]; ok {
-				continue
-			}
-			redundantSet[name] = struct{}{}
-			values = append(values, jsonStruct{key: fieldName, json: name, tp: t.Type.String(), value: val.Field(i).Interface()})
-		}
-	}
-	sort.Sort(values)
-	for _, value := range values {
-		if pretty {
-			rows = append(rows, table.Row{value.json, value.key, value.tp, value.value})
-		} else {
-			hiyellow(f, "%s: %v\n", value.json, value.value)
-		}
-	}
-	if pretty {
-		t.AppendRows(rows)
-		t.Render()
+		style = strategy.DefaultStyle()
 	}
+	strategy.PrintConfig(s, f, style, len(withColor) > 0 && withColor[0], strategy.DefaultWhiteList()...)
 }

pkg/strategy/output.go

@@ -0,0 +1,146 @@
+package strategy
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+	"sort"
+	"strings"
+
+	"github.com/c9s/bbgo/pkg/bbgo"
+	"github.com/c9s/bbgo/pkg/util"
+	"github.com/fatih/color"
+	"github.com/jedib0t/go-pretty/v6/table"
+	"github.com/jedib0t/go-pretty/v6/text"
+)
+
+type JsonStruct struct {
+	Key   string
+	Json  string
+	Type  string
+	Value interface{}
+}
+
+type JsonArr []JsonStruct
+
+func (a JsonArr) Len() int           { return len(a) }
+func (a JsonArr) Less(i, j int) bool { return a[i].Key < a[j].Key }
+func (a JsonArr) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+
+func DefaultStyle() *table.Style {
+	style := table.Style{
+		Name:    "StyleRounded",
+		Box:     table.StyleBoxRounded,
+		Format:  table.FormatOptionsDefault,
+		HTML:    table.DefaultHTMLOptions,
+		Options: table.OptionsDefault,
+		Title:   table.TitleOptionsDefault,
+		Color:   table.ColorOptionsYellowWhiteOnBlack,
+	}
+	style.Color.Row = text.Colors{text.FgHiYellow, text.BgHiBlack}
+	style.Color.RowAlternate = text.Colors{text.FgYellow, text.BgBlack}
+	return &style
+}
+
+func DefaultWhiteList() []string {
+	return []string{"Window", "Interval", "Symbol"}
+}
+
+func PrintConfig(s interface{}, f io.Writer, style *table.Style, withColor bool, whiteLists ...string) {
+	t := table.NewWriter()
+	var write func(io.Writer, string, ...interface{})
+
+	if withColor {
+		write = color.New(color.FgHiYellow).FprintfFunc()
+	} else {
+		write = func(a io.Writer, format string, args ...interface{}) {
+			fmt.Fprintf(a, format, args...)
+		}
+	}
+	if style != nil {
+		t.SetOutputMirror(f)
+		t.SetStyle(*style)
+		t.SetColumnConfigs([]table.ColumnConfig{
+			{Number: 4, WidthMax: 50, WidthMaxEnforcer: text.WrapText},
+		})
+		t.AppendHeader(table.Row{"json", "struct field name", "type", "value"})
+	}
+	write(f, "---- %s Settings ---\n", bbgo.CallID(s))
+
+	embeddedWhiteSet := map[string]struct{}{}
+	for _, whiteList := range whiteLists {
+		embeddedWhiteSet[whiteList] = struct{}{}
+	}
+
+	redundantSet := map[string]struct{}{}
+
+	var rows []table.Row
+
+	val := reflect.ValueOf(s)
+
+	if val.Type().Kind() == util.Pointer {
+		val = val.Elem()
+	}
+	var values JsonArr
+	for i := 0; i < val.Type().NumField(); i++ {
+		t := val.Type().Field(i)
+		if !t.IsExported() {
+			continue
+		}
+		fieldName := t.Name
+		switch jsonTag := t.Tag.Get("json"); jsonTag {
+		case "-":
+		case "":
+			// we only fetch fields from the first layer of the embedded struct
+			if t.Anonymous {
+				var target reflect.Type
+				var field reflect.Value
+				if t.Type.Kind() == util.Pointer {
+					target = t.Type.Elem()
+					field = val.Field(i).Elem()
+				} else {
+					target = t.Type
+					field = val.Field(i)
+				}
+				for j := 0; j < target.NumField(); j++ {
+					tt := target.Field(j)
+					if !tt.IsExported() {
+						continue
+					}
+					fieldName := tt.Name
+					if _, ok := embeddedWhiteSet[fieldName]; !ok {
+						continue
+					}
+					if jtag := tt.Tag.Get("json"); jtag != "" && jtag != "-" {
+						name := strings.Split(jtag, ",")[0]
+						if _, ok := redundantSet[name]; ok {
+							continue
+						}
+						redundantSet[name] = struct{}{}
+						value := field.Field(j).Interface()
+						values = append(values, JsonStruct{Key: fieldName, Json: name, Type: tt.Type.String(), Value: value})
+					}
+				}
+			}
+		default:
+			name := strings.Split(jsonTag, ",")[0]
+			if _, ok := redundantSet[name]; ok {
+				continue
+			}
+			redundantSet[name] = struct{}{}
+			values = append(values, JsonStruct{Key: fieldName, Json: name, Type: t.Type.String(), Value: val.Field(i).Interface()})
+		}
+	}
+	sort.Sort(values)
+	for _, value := range values {
+		if style != nil {
+			rows = append(rows, table.Row{value.Json, value.Key, value.Type, value.Value})
+		} else {
+			write(f, "%s: %v\n", value.Json, value.Value)
+		}
+	}
+	if style != nil {
+		t.AppendRows(rows)
+		t.Render()
+	}
+}