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bbgo/interact: refactor strategy filter functions

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c9s 2022-09-11 02:55:58 +08:00
parent 442ca9287d
commit 278aa026f2
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1 changed files with 27 additions and 28 deletions
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55
pkg/bbgo/interact.go
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@ -86,33 +86,32 @@ func getStrategySignatures(exchangeStrategies map[string]SingleExchangeStrategy)
return strategies
}
func filterStrategyByInterface(checkInterface interface{}, exchangeStrategies map[string]SingleExchangeStrategy) (strategies map[string]SingleExchangeStrategy, found bool) {
found = false
strategies = make(map[string]SingleExchangeStrategy)
rt := reflect.TypeOf(checkInterface).Elem()
// 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) {
retStrategies := make(map[string]SingleExchangeStrategy)
for signature, strategy := range exchangeStrategies {
if ok := reflect.TypeOf(strategy).Implements(rt); ok {
strategies[signature] = strategy
found = true
if ok := filter(strategy); ok {
retStrategies[signature] = strategy
}
}
return strategies, found
return retStrategies, nil
}
func filterStrategyByField(fieldName string, fieldType reflect.Type, exchangeStrategies map[string]SingleExchangeStrategy) (strategies map[string]SingleExchangeStrategy, found bool) {
found = false
strategies = make(map[string]SingleExchangeStrategy)
for signature, strategy := range exchangeStrategies {
r := reflect.ValueOf(strategy).Elem()
f := r.FieldByName(fieldName)
if !f.IsZero() && f.Type() == fieldType {
strategies[signature] = strategy
found = true
}
}
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)
})
}
return strategies, found
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)
return !f.IsZero() && f.Type() == fieldType
})
}
func generateStrategyButtonsForm(strategies map[string]SingleExchangeStrategy) [][3]string {
@ -172,7 +171,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
i.PrivateCommand("/position", "Show Position", func(reply interact.Reply) error {
// it.trader.exchangeStrategies
// send symbol options
if strategies, found := filterStrategyByInterface((*PositionReader)(nil), it.exchangeStrategies); found {
if strategies, err := filterStrategiesByInterface(it.exchangeStrategies, (*PositionReader)(nil)); err == nil && len(strategies) > 0 {
reply.AddMultipleButtons(generateStrategyButtonsForm(strategies))
reply.Message("Please choose one strategy")
} else {
@ -213,7 +212,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
i.PrivateCommand("/resetposition", "Reset position", func(reply interact.Reply) error {
// it.trader.exchangeStrategies
// send symbol options
if strategies, found := filterStrategyByInterface((*PositionResetter)(nil), it.exchangeStrategies); found {
if strategies, err := filterStrategiesByInterface(it.exchangeStrategies, (*PositionResetter)(nil)); err == nil && len(strategies) > 0 {
reply.AddMultipleButtons(generateStrategyButtonsForm(strategies))
reply.Message("Please choose one strategy")
} else {
@ -254,7 +253,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
i.PrivateCommand("/closeposition", "Close position", func(reply interact.Reply) error {
// it.trader.exchangeStrategies
// send symbol options
if strategies, found := filterStrategyByInterface((*PositionCloser)(nil), it.exchangeStrategies); found {
if strategies, err := filterStrategiesByInterface(it.exchangeStrategies, (*PositionCloser)(nil)); err == nil && len(strategies) > 0 {
reply.AddMultipleButtons(generateStrategyButtonsForm(strategies))
reply.Message("Please choose one strategy")
} else {
@ -323,7 +322,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
i.PrivateCommand("/status", "Strategy Status", func(reply interact.Reply) error {
// it.trader.exchangeStrategies
// send symbol options
if strategies, found := filterStrategyByInterface((*StrategyStatusReader)(nil), it.exchangeStrategies); found {
if strategies, err := filterStrategiesByInterface(it.exchangeStrategies, (*StrategyStatusReader)(nil)); err == nil && len(strategies) > 0 {
reply.AddMultipleButtons(generateStrategyButtonsForm(strategies))
reply.Message("Please choose a strategy")
} else {
@ -361,7 +360,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
i.PrivateCommand("/suspend", "Suspend Strategy", func(reply interact.Reply) error {
// it.trader.exchangeStrategies
// send symbol options
if strategies, found := filterStrategyByInterface((*StrategyToggler)(nil), it.exchangeStrategies); found {
if strategies, err := filterStrategiesByInterface(it.exchangeStrategies, (*StrategyToggler)(nil)); err == nil && len(strategies) > 0 {
reply.AddMultipleButtons(generateStrategyButtonsForm(strategies))
reply.Message("Please choose one strategy")
} else {
@ -403,7 +402,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
i.PrivateCommand("/resume", "Resume Strategy", func(reply interact.Reply) error {
// it.trader.exchangeStrategies
// send symbol options
if strategies, found := filterStrategyByInterface((*StrategyToggler)(nil), it.exchangeStrategies); found {
if strategies, err := filterStrategiesByInterface(it.exchangeStrategies, (*StrategyToggler)(nil)); err == nil && len(strategies) > 0 {
reply.AddMultipleButtons(generateStrategyButtonsForm(strategies))
reply.Message("Please choose one strategy")
} else {
@ -445,7 +444,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
i.PrivateCommand("/emergencystop", "Emergency Stop", func(reply interact.Reply) error {
// it.trader.exchangeStrategies
// send symbol options
if strategies, found := filterStrategyByInterface((*EmergencyStopper)(nil), it.exchangeStrategies); found {
if strategies, err := filterStrategiesByInterface(it.exchangeStrategies, (*EmergencyStopper)(nil)); err == nil && len(strategies) > 0 {
reply.AddMultipleButtons(generateStrategyButtonsForm(strategies))
reply.Message("Please choose one strategy")
} else {
@ -482,7 +481,7 @@ func (it *CoreInteraction) Commands(i *interact.Interact) {
i.PrivateCommand("/modifyposition", "Modify Strategy Position", func(reply interact.Reply) error {
// it.trader.exchangeStrategies
// send symbol options
if strategies, found := filterStrategyByField("Position", reflect.TypeOf(types.NewPosition("", "", "")), it.exchangeStrategies); found {
if strategies, err := filterStrategiesByField(it.exchangeStrategies, "Position", reflect.TypeOf(types.NewPosition("", "", ""))); err == nil && len(strategies) > 0 {
reply.AddMultipleButtons(generateStrategyButtonsForm(strategies))
reply.Message("Please choose one strategy")
} else {