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

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package balance
import (
"fmt"
"github.com/TrueCloudLab/frostfs-node/pkg/morph/client"
"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
"github.com/nspcc-dev/neo-go/pkg/util"
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)
// Client is a wrapper over StaticClient
// which makes calls with the names and arguments
// of the FrostFS Balance contract.
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//
// Working client must be created via constructor New.
// Using the Client that has been created with new(Client)
// expression (or just declaring a Client variable) is unsafe
// and can lead to panic.
type Client struct {
client *client.StaticClient // static Balance contract client
}
const (
transferXMethod = "transferX"
mintMethod = "mint"
burnMethod = "burn"
lockMethod = "lock"
balanceOfMethod = "balanceOf"
decimalsMethod = "decimals"
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)
// NewFromMorph returns the wrapper instance from the raw morph client.
func NewFromMorph(cli *client.Client, contract util.Uint160, fee fixedn.Fixed8, opts ...Option) (*Client, error) {
o := defaultOpts()
for i := range opts {
opts[i](o)
}
staticClient, err := client.NewStatic(cli, contract, fee, ([]client.StaticClientOption)(*o)...)
if err != nil {
return nil, fmt.Errorf("could not create static client of Balance contract: %w", err)
}
return &Client{
client: staticClient,
}, nil
}
// Option allows to set an optional
// parameter of Wrapper.
type Option func(*opts)
type opts []client.StaticClientOption
func defaultOpts() *opts {
return new(opts)
}
// TryNotary returns option to enable
// notary invocation tries.
func TryNotary() Option {
return func(o *opts) {
*o = append(*o, client.TryNotary())
}
}
// AsAlphabet returns option to sign main TX
// of notary requests with client's private
// key.
//
// Considered to be used by IR nodes only.
func AsAlphabet() Option {
return func(o *opts) {
*o = append(*o, client.AsAlphabet())
}
}