70 lines
2.4 KiB
Go
70 lines
2.4 KiB
Go
package wallet
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import (
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"context"
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"errors"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/log"
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)
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var (
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// ErrServiceNotInitialized returned when wallet is not initialized/started,.
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ErrServiceNotInitialized = errors.New("wallet service is not initialized")
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)
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func NewAPI(s *Service) *API {
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return &API{s}
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}
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// API is class with methods available over RPC.
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type API struct {
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s *Service
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}
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// GetTransfers returns transfers in range of blocks. If `end` is nil all transfers from `start` will be returned.
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// TODO(dshulyak) benchmark loading many transfers from database. We can avoid json unmarshal/marshal if we will
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// read header, tx and receipt as a raw json.
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func (api *API) GetTransfers(ctx context.Context, start, end *hexutil.Big) ([]TransferView, error) {
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log.Debug("call to get transfers", "start", start, "end", end)
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if start == nil {
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return nil, errors.New("start of the query must be provided. use 0 if you want to load all transfers")
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}
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if api.s.db == nil {
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return nil, ErrServiceNotInitialized
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}
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rst, err := api.s.db.GetTransfers((*big.Int)(start), (*big.Int)(end))
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if err != nil {
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return nil, err
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}
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log.Debug("result from database for transfers", "start", start, "end", end, "len", len(rst))
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return castToTransferViews(rst), nil
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}
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// GetTransfersByAddress returns transfers for a single address between two blocks.
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func (api *API) GetTransfersByAddress(ctx context.Context, address common.Address, start, end *hexutil.Big) ([]TransferView, error) {
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log.Debug("call to get transfers for an address", "address", address, "start", start, "end", end)
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if start == nil {
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return nil, errors.New("start of the query must be provided. use 0 if you want to load all transfers")
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}
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if api.s.db == nil {
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return nil, ErrServiceNotInitialized
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}
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rst, err := api.s.db.GetTransfersByAddress(address, (*big.Int)(start), (*big.Int)(end))
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if err != nil {
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return nil, err
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}
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log.Debug("result from database for address", "address", address, "start", start, "end", end, "len", len(rst))
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return castToTransferViews(rst), nil
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}
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// GetTokensBalances return mapping of token balances for every account.
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func (api *API) GetTokensBalances(ctx context.Context, accounts, tokens []common.Address) (map[common.Address]map[common.Address]*big.Int, error) {
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if api.s.client == nil {
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return nil, ErrServiceNotInitialized
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}
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return GetTokensBalances(ctx, api.s.client, accounts, tokens)
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}
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