53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
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package block
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import (
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"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/util"
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)
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// ConsensusData represents primary index and nonce of block in the chain.
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type ConsensusData struct {
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// Primary index
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PrimaryIndex uint32 `json:"primary"`
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// Random number
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Nonce uint64 `json:"nonce"`
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// Hash of the ConsensusData (single SHA256)
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hash util.Uint256
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}
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// DecodeBinary implements Serializable interface.
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func (c *ConsensusData) DecodeBinary(br *io.BinReader) {
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c.PrimaryIndex = uint32(br.ReadVarUint())
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c.Nonce = br.ReadU64LE()
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}
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// EncodeBinary encodes implements Serializable interface.
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func (c *ConsensusData) EncodeBinary(bw *io.BinWriter) {
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bw.WriteVarUint(uint64(c.PrimaryIndex))
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bw.WriteU64LE(c.Nonce)
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}
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// Hash returns the hash of the consensus data.
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func (c *ConsensusData) Hash() util.Uint256 {
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if c.hash.Equals(util.Uint256{}) {
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if c.createHash() != nil {
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panic("failed to compute hash!")
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}
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}
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return c.hash
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}
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// createHash creates the hash of the consensus data.
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func (c *ConsensusData) createHash() error {
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buf := io.NewBufBinWriter()
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c.EncodeBinary(buf.BinWriter)
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if buf.Err != nil {
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return buf.Err
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}
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b := buf.Bytes()
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c.hash = hash.Sha256(b)
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return nil
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}
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