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package types
import (
"bytes"
"github.com/pkg/errors"
)
// BlockMeta contains meta information.
type BlockMeta struct {
BlockID BlockID `json:"block_id"`
BlockSize int `json:"block_size"`
Header Header `json:"header"`
NumTxs int `json:"num_txs"`
}
// NewBlockMeta returns a new BlockMeta.
func NewBlockMeta(block *Block, blockParts *PartSet) *BlockMeta {
return &BlockMeta{
BlockID: BlockID{block.Hash(), blockParts.Header()},
BlockSize: block.Size(),
Header: block.Header,
NumTxs: len(block.Data.Txs),
}
}
//-----------------------------------------------------------
// These methods are for Protobuf Compatibility
// Size returns the size of the amino encoding, in bytes.
func (bm *BlockMeta) Size() int {
bs, _ := bm.Marshal()
return len(bs)
}
// Marshal returns the amino encoding.
func (bm *BlockMeta) Marshal() ([]byte, error) {
return cdc.MarshalBinaryBare(bm)
}
// MarshalTo calls Marshal and copies to the given buffer.
func (bm *BlockMeta) MarshalTo(data []byte) (int, error) {
bs, err := bm.Marshal()
if err != nil {
return -1, err
}
return copy(data, bs), nil
}
// Unmarshal deserializes from amino encoded form.
func (bm *BlockMeta) Unmarshal(bs []byte) error {
return cdc.UnmarshalBinaryBare(bs, bm)
}
// ValidateBasic performs basic validation.
func (bm *BlockMeta) ValidateBasic() error {
if err := bm.BlockID.ValidateBasic(); err != nil {
return err
}
if !bytes.Equal(bm.BlockID.Hash, bm.Header.Hash()) {
return errors.Errorf("expected BlockID#Hash and Header#Hash to be the same, got %X != %X",
bm.BlockID.Hash, bm.Header.Hash())
}
return nil
}