Golang DirectoryBlock.BuildBodyMR Examples

Example #1

File: init.go Project: FactomProject/FactomCode

// Validate a dir block
func validateDBlock(c *common.DChain, b *common.DirectoryBlock) (merkleRoot *common.Hash, dbHash *common.Hash, err error) {

	bodyMR, err := b.BuildBodyMR()
	if err != nil {
		return nil, nil, err
	}

	if !b.Header.BodyMR.IsSameAs(bodyMR) {
		return nil, nil, errors.New("Invalid body MR for dir block: " + string(b.Header.DBHeight))
	}

	for _, dbEntry := range b.DBEntries {
		switch dbEntry.ChainID.String() {
		case ecchain.ChainID.String():
			err := validateCBlockByMR(dbEntry.KeyMR)
			if err != nil {
				return nil, nil, err
			}
		case achain.ChainID.String():
			err := validateABlockByMR(dbEntry.KeyMR)
			if err != nil {
				return nil, nil, err
			}
		case wire.FChainID.String():
			err := validateFBlockByMR(dbEntry.KeyMR)
			if err != nil {
				return nil, nil, err
			}
		default:
			err := validateEBlockByMR(dbEntry.ChainID, dbEntry.KeyMR)
			if err != nil {
				return nil, nil, err
			}
		}
	}

	b.DBHash, _ = common.CreateHash(b)
	b.BuildKeyMerkleRoot()

	return b.KeyMR, b.DBHash, nil
}