forked from cerc-io/ipld-eth-server
82 lines
2.4 KiB
Go
82 lines
2.4 KiB
Go
|
package eth
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
|
||
|
|
"github.com/ethereum/go-ethereum/core/types"
|
||
|
|
|
||
|
|
"github.com/ethereum/go-ethereum/common/hexutil"
|
||
|
|
"github.com/ethereum/go-ethereum/rpc"
|
||
|
|
)
|
||
|
|
|
||
|
|
// APIName is the namespace used for the state diffing service API
|
||
|
|
const APIName = "eth"
|
||
|
|
|
||
|
|
// APIVersion is the version of the state diffing service API
|
||
|
|
const APIVersion = "0.0.1"
|
||
|
|
|
||
|
|
type PublicEthAPI struct {
|
||
|
|
b Backend
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewPublicEthAPI creates a new PublicEthAPI with the provided underlying Backend
|
||
|
|
func NewPublicEthAPI(b Backend) *PublicEthAPI {
|
||
|
|
return &PublicEthAPI{
|
||
|
|
b: b,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
to start, need
|
||
|
|
eth_blockNumber
|
||
|
|
eth_getLogs
|
||
|
|
eth_getHeaderByNumber
|
||
|
|
*/
|
||
|
|
|
||
|
|
// BlockNumber returns the block number of the chain head.
|
||
|
|
func (pea *PublicEthAPI) BlockNumber() hexutil.Uint64 {
|
||
|
|
number, _ := pea.b.retriever.RetrieveLastBlockNumber()
|
||
|
|
return hexutil.Uint64(number)
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetHeaderByNumber returns the requested canonical block header.
|
||
|
|
// * When blockNr is -1 the chain head is returned.
|
||
|
|
func (pea *PublicEthAPI) GetHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (map[string]interface{}, error) {
|
||
|
|
header, err := pea.b.HeaderByNumber(ctx, number)
|
||
|
|
if header != nil && err == nil {
|
||
|
|
return pea.rpcMarshalHeader(header), err
|
||
|
|
}
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
// rpcMarshalHeader uses the generalized output filler, then adds the total difficulty field, which requires
|
||
|
|
// a `PublicBlockchainAPI`.
|
||
|
|
func (pea *PublicEthAPI) rpcMarshalHeader(header *types.Header) map[string]interface{} {
|
||
|
|
fields := RPCMarshalHeader(header)
|
||
|
|
fields["totalDifficulty"] = (*hexutil.Big)(pea.b.GetTd(header.Hash()))
|
||
|
|
return fields
|
||
|
|
}
|
||
|
|
|
||
|
|
// RPCMarshalHeader converts the given header to the RPC output .
|
||
|
|
func RPCMarshalHeader(head *types.Header) map[string]interface{} {
|
||
|
|
return map[string]interface{}{
|
||
|
|
"number": (*hexutil.Big)(head.Number),
|
||
|
|
"hash": head.Hash(),
|
||
|
|
"parentHash": head.ParentHash,
|
||
|
|
"nonce": head.Nonce,
|
||
|
|
"mixHash": head.MixDigest,
|
||
|
|
"sha3Uncles": head.UncleHash,
|
||
|
|
"logsBloom": head.Bloom,
|
||
|
|
"stateRoot": head.Root,
|
||
|
|
"miner": head.Coinbase,
|
||
|
|
"difficulty": (*hexutil.Big)(head.Difficulty),
|
||
|
|
"extraData": hexutil.Bytes(head.Extra),
|
||
|
|
"size": hexutil.Uint64(head.Size()),
|
||
|
|
"gasLimit": hexutil.Uint64(head.GasLimit),
|
||
|
|
"gasUsed": hexutil.Uint64(head.GasUsed),
|
||
|
|
"timestamp": hexutil.Uint64(head.Time),
|
||
|
|
"transactionsRoot": head.TxHash,
|
||
|
|
"receiptsRoot": head.ReceiptHash,
|
||
|
|
}
|
||
|
|
}
|