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