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65 lines
2.4 KiB
65 lines
2.4 KiB
package hmyapi
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import (
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"context"
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"github.com/ethereum/go-ethereum/common"
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"github.com/harmony-one/harmony/accounts"
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"github.com/harmony-one/harmony/core/types"
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"github.com/harmony-one/harmony/hmy"
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"github.com/harmony-one/harmony/internal/utils"
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)
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// PrivateAccountAPI provides an API to access accounts managed by this node.
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// It offers methods to create, (un)lock en list accounts. Some methods accept
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// passwords and are therefore considered private by default.
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type PrivateAccountAPI struct {
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am *accounts.Manager
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nonceLock *AddrLocker
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b *hmy.APIBackend
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}
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// NewAccount will create a new account and returns the address for the new account.
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func (s *PrivateAccountAPI) NewAccount(password string) (common.Address, error) {
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// TODO: port
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return common.Address{}, nil
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}
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// SendTransaction will create a transaction from the given arguments and
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// tries to sign it with the key associated with args.To. If the given passwd isn't
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// able to decrypt the key it fails.
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func (s *PrivateAccountAPI) SendTransaction(ctx context.Context, args SendTxArgs, passwd string) (common.Hash, error) {
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if args.Nonce == nil {
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// Hold the addresse's mutex around signing to prevent concurrent assignment of
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// the same nonce to multiple accounts.
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s.nonceLock.LockAddr(args.From)
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defer s.nonceLock.UnlockAddr(args.From)
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}
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signed, err := s.signTransaction(ctx, &args, passwd)
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if err != nil {
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utils.GetLogger().Warn("Failed transaction send attempt", "from", args.From, "to", args.To, "value", args.Value.ToInt(), "err", err)
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return common.Hash{}, err
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}
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return SubmitTransaction(ctx, s.b, signed)
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}
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// signTransaction sets defaults and signs the given transaction
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// NOTE: the caller needs to ensure that the nonceLock is held, if applicable,
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// and release it after the transaction has been submitted to the tx pool
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func (s *PrivateAccountAPI) signTransaction(ctx context.Context, args *SendTxArgs, passwd string) (*types.Transaction, error) {
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// Look up the wallet containing the requested signer
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account := accounts.Account{Address: args.From}
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wallet, err := s.am.Find(account)
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if err != nil {
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return nil, err
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}
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// Set some sanity defaults and terminate on failure
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if err := args.setDefaults(ctx, s.b); err != nil {
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return nil, err
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}
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// Assemble the transaction and sign with the wallet
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tx := args.toTransaction()
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return wallet.SignTxWithPassphrase(account, passwd, tx, s.b.ChainConfig().ChainID)
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}
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