61 lines
1.7 KiB
Go
61 lines
1.7 KiB
Go
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// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package ipld
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import (
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"github.com/ipfs/go-cid"
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mh "github.com/multiformats/go-multihash"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/rlp"
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)
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// EthHeader (eth-block, codec 0x90), represents an ethereum block header
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type EthHeader struct {
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cid cid.Cid
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rawdata []byte
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}
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// Static (compile time) check that EthHeader satisfies the node.Node interface.
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var _ IPLD = (*EthHeader)(nil)
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// NewEthHeader converts a *types.Header into an EthHeader IPLD node
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func NewEthHeader(header *types.Header) (*EthHeader, error) {
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headerRLP, err := rlp.EncodeToBytes(header)
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if err != nil {
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return nil, err
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}
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c, err := RawdataToCid(MEthHeader, headerRLP, mh.KECCAK_256)
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if err != nil {
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return nil, err
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}
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return &EthHeader{
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cid: c,
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rawdata: headerRLP,
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}, nil
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}
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// RawData returns the binary of the RLP encode of the block header.
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func (b *EthHeader) RawData() []byte {
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return b.rawdata
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}
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// Cid returns the cid of the block header.
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func (b *EthHeader) Cid() cid.Cid {
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return b.cid
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}
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