158 lines
3.5 KiB
Go
158 lines
3.5 KiB
Go
package client
|
|
|
|
import (
|
|
"context"
|
|
"crypto/ecdsa"
|
|
"time"
|
|
|
|
"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
|
|
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
|
|
"github.com/nspcc-dev/neo-go/pkg/rpc/client"
|
|
"github.com/nspcc-dev/neo-go/pkg/util"
|
|
"github.com/nspcc-dev/neo-go/pkg/wallet"
|
|
crypto "github.com/nspcc-dev/neofs-crypto"
|
|
"github.com/nspcc-dev/neofs-node/pkg/util/logger"
|
|
"go.uber.org/zap"
|
|
)
|
|
|
|
// Option is a client configuration change function.
|
|
type Option func(*cfg)
|
|
|
|
// groups the configurations with default values.
|
|
type cfg struct {
|
|
ctx context.Context // neo-go client context
|
|
|
|
dialTimeout time.Duration // client dial timeout
|
|
|
|
logger *logger.Logger // logging component
|
|
|
|
gas util.Uint160 // native gas script-hash
|
|
|
|
waitInterval time.Duration
|
|
}
|
|
|
|
const (
|
|
defaultDialTimeout = 5 * time.Second
|
|
defaultWaitInterval = 500 * time.Millisecond
|
|
)
|
|
|
|
func defaultConfig() *cfg {
|
|
return &cfg{
|
|
ctx: context.Background(),
|
|
dialTimeout: defaultDialTimeout,
|
|
logger: zap.L(),
|
|
waitInterval: defaultWaitInterval,
|
|
}
|
|
}
|
|
|
|
// New creates, initializes and returns the Client instance.
|
|
//
|
|
// If private key is nil, crypto.ErrEmptyPrivateKey is returned.
|
|
//
|
|
// Other values are set according to provided options, or by default:
|
|
// * client context: Background;
|
|
// * dial timeout: 5s;
|
|
// * blockchain network type: netmode.PrivNet;
|
|
// * logger: zap.L().
|
|
//
|
|
// If desired option satisfies the default value, it can be omitted.
|
|
// If multiple options of the same config value are supplied,
|
|
// the option with the highest index in the arguments will be used.
|
|
func New(key *ecdsa.PrivateKey, endpoint string, opts ...Option) (*Client, error) {
|
|
if key == nil {
|
|
return nil, crypto.ErrEmptyPrivateKey
|
|
}
|
|
|
|
privKeyBytes := crypto.MarshalPrivateKey(key)
|
|
|
|
wif, err := keys.WIFEncode(privKeyBytes, keys.WIFVersion, true)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
account, err := wallet.NewAccountFromWIF(wif)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// build default configuration
|
|
cfg := defaultConfig()
|
|
|
|
// apply options
|
|
for _, opt := range opts {
|
|
opt(cfg)
|
|
}
|
|
|
|
cli, err := client.New(cfg.ctx, endpoint, client.Options{
|
|
DialTimeout: cfg.dialTimeout,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = cli.Init() // magic number is set there based on RPC node answer
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
gas, err := cli.GetNativeContractHash(nativenames.Gas)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
neo, err := cli.GetNativeContractHash(nativenames.Neo)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &Client{
|
|
logger: cfg.logger,
|
|
client: cli,
|
|
acc: account,
|
|
gas: gas,
|
|
neo: neo,
|
|
waitInterval: cfg.waitInterval,
|
|
}, nil
|
|
}
|
|
|
|
// WithContext returns a client constructor option that
|
|
// specifies the neo-go client context.
|
|
//
|
|
// Ignores nil value.
|
|
//
|
|
// If option not provided, context.Background() is used.
|
|
func WithContext(ctx context.Context) Option {
|
|
return func(c *cfg) {
|
|
if ctx != nil {
|
|
c.ctx = ctx
|
|
}
|
|
}
|
|
}
|
|
|
|
// WithDialTimeout returns a client constructor option
|
|
// that specifies neo-go client dial timeout duration.
|
|
//
|
|
// Ignores non-positive value.
|
|
//
|
|
// If option not provided, 5s timeout is used.
|
|
func WithDialTimeout(dur time.Duration) Option {
|
|
return func(c *cfg) {
|
|
if dur > 0 {
|
|
c.dialTimeout = dur
|
|
}
|
|
}
|
|
}
|
|
|
|
// WithLogger returns a client constructor option
|
|
// that specifies the component for writing log messages.
|
|
//
|
|
// Ignores nil value.
|
|
//
|
|
// If option not provided, zap.L() is used.
|
|
func WithLogger(logger *logger.Logger) Option {
|
|
return func(c *cfg) {
|
|
if logger != nil {
|
|
c.logger = logger
|
|
}
|
|
}
|
|
}
|