frostfs-node/pkg/morph/client/balance/balanceOf.go

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package balance
import (
"math/big"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/pkg/errors"
)
// GetBalanceOfArgs groups the arguments
// of "balance of" test invoke call.
type GetBalanceOfArgs struct {
wallet []byte // wallet script hash
}
// GetBalanceOfValues groups the stack parameters
// returned by "balance of" test invoke.
type GetBalanceOfValues struct {
amount *big.Int // wallet funds amount
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}
// SetWallet sets the wallet script hash
// in a binary format.
func (g *GetBalanceOfArgs) SetWallet(v []byte) {
g.wallet = v
}
// Amount returns the amount of funds.
func (g *GetBalanceOfValues) Amount() *big.Int {
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return g.amount
}
// BalanceOf performs the test invoke of "balance of"
// method of NeoFS Balance contract.
func (c *Client) BalanceOf(args GetBalanceOfArgs) (*GetBalanceOfValues, error) {
prms, err := c.client.TestInvoke(
c.balanceOfMethod,
args.wallet,
)
if err != nil {
return nil, errors.Wrapf(err, "could not perform test invocation (%s)", c.balanceOfMethod)
} else if ln := len(prms); ln != 1 {
return nil, errors.Errorf("unexpected stack item count (%s): %d", c.balanceOfMethod, ln)
}
amount, err := client.BigIntFromStackItem(prms[0])
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if err != nil {
return nil, errors.Wrapf(err, "could not get integer stack item from stack item (%s)", c.balanceOfMethod)
}
return &GetBalanceOfValues{
amount: amount,
}, nil
}