bbgo: add comments to the quota methods

pkg/bbgo/quota.go

@@ -12,12 +12,16 @@ type Quota struct {
 	Locked    fixedpoint.Value
 }
 
+// Add adds the fund to the available quota
 func (q *Quota) Add(fund fixedpoint.Value) {
 	q.mu.Lock()
 	q.Available = q.Available.Add(fund)
 	q.mu.Unlock()
 }
 
+// Lock locks the fund from the available quota
+// returns true if the fund is locked successfully
+// returns false if the fund is not enough
 func (q *Quota) Lock(fund fixedpoint.Value) bool {
 	if fund.Compare(q.Available) > 0 {
 		return false
@@ -31,12 +35,15 @@ func (q *Quota) Lock(fund fixedpoint.Value) bool {
 	return true
 }
 
+// Commit commits the locked fund
 func (q *Quota) Commit() {
 	q.mu.Lock()
 	q.Locked = fixedpoint.Zero
 	q.mu.Unlock()
 }
 
+// Rollback rolls back the locked fund
+// this will move the locked fund to the available quota
 func (q *Quota) Rollback() {
 	q.mu.Lock()
 	q.Available = q.Available.Add(q.Locked)
@@ -44,12 +51,14 @@ func (q *Quota) Rollback() {
 	q.mu.Unlock()
 }
 
+// QuotaTransaction is a transactional quota manager
 type QuotaTransaction struct {
 	mu         sync.Mutex
 	BaseAsset  Quota
 	QuoteAsset Quota
 }
 
+// Commit commits the transaction
 func (m *QuotaTransaction) Commit() bool {
 	m.mu.Lock()
 	m.BaseAsset.Commit()
@@ -58,6 +67,7 @@ func (m *QuotaTransaction) Commit() bool {
 	return true
 }
 
+// Rollback rolls back the transaction
 func (m *QuotaTransaction) Rollback() bool {
 	m.mu.Lock()
 	m.BaseAsset.Rollback()

pkg/strategy/xmaker/strategy.go

@@ -504,6 +504,8 @@ func (s *Strategy) updateQuote(ctx context.Context) {
 		s.logger.Infof("%s maker bid disabled: quote balance %s not found", s.Symbol, b.String())
 	}
 
+	s.logger.Infof("maker quota: %+v", makerQuota)
+
 	// if
 	//  1) the source session is a margin session
 	//  2) the min margin level is configured