initial

accounting/service.go

@@ -0,0 +1,49 @@
+package accounting
+
+import (
+	"github.com/nspcc-dev/neofs-proto/decimal"
+	"github.com/nspcc-dev/neofs-proto/internal"
+	"github.com/nspcc-dev/neofs-proto/refs"
+)
+
+type (
+	// OwnerID type alias.
+	OwnerID = refs.OwnerID
+
+	// Decimal type alias.
+	Decimal = decimal.Decimal
+
+	// Filter is used to filter accounts by criteria.
+	Filter func(acc *Account) bool
+)
+
+const (
+	// ErrEmptyAddress is raised when passed Address is empty.
+	ErrEmptyAddress = internal.Error("empty address")
+
+	// ErrEmptyLockTarget is raised when passed LockTarget is empty.
+	ErrEmptyLockTarget = internal.Error("empty lock target")
+
+	// ErrEmptyContainerID is raised when passed CID is empty.
+	ErrEmptyContainerID = internal.Error("empty container ID")
+
+	// ErrEmptyParentAddress is raised when passed ParentAddress is empty.
+	ErrEmptyParentAddress = internal.Error("empty parent address")
+)
+
+// SetTTL sets ttl to BalanceRequest to satisfy TTLRequest interface.
+func (m BalanceRequest) SetTTL(v uint32) { m.TTL = v }
+
+// SumFunds goes through all accounts and sums up active funds.
+func SumFunds(accounts []*Account) (res *decimal.Decimal) {
+	res = decimal.Zero.Copy()
+
+	for i := range accounts {
+		if accounts[i] == nil {
+			continue
+		}
+
+		res = res.Add(accounts[i].ActiveFunds)
+	}
+	return
+}