예제 #1
0
파일: dblock.go 프로젝트: 6londe/FactomCode
// ProcessDBlockBatche inserts the DBlock and update all it's dbentries in DB
func (db *LevelDb) ProcessDBlockBatch(dblock *common.DirectoryBlock) error {

	if dblock != nil {
		if db.lbatch == nil {
			db.lbatch = new(leveldb.Batch)
		}

		defer db.lbatch.Reset()

		binaryDblock, err := dblock.MarshalBinary()
		if err != nil {
			return err
		}

		if dblock.DBHash == nil {
			dblock.DBHash = common.Sha(binaryDblock)
		}

		if dblock.KeyMR == nil {
			dblock.BuildKeyMerkleRoot()
		}

		// Insert the binary directory block
		var key []byte = []byte{byte(TBL_DB)}
		key = append(key, dblock.DBHash.Bytes()...)
		db.lbatch.Put(key, binaryDblock)

		// Insert block height cross reference
		var dbNumkey []byte = []byte{byte(TBL_DB_NUM)}
		var buf bytes.Buffer
		binary.Write(&buf, binary.BigEndian, dblock.Header.DBHeight)
		dbNumkey = append(dbNumkey, buf.Bytes()...)
		db.lbatch.Put(dbNumkey, dblock.DBHash.Bytes())

		// Insert the directory block merkle root cross reference
		key = []byte{byte(TBL_DB_MR)}
		key = append(key, dblock.KeyMR.Bytes()...)
		binaryDBHash, _ := dblock.DBHash.MarshalBinary()
		db.lbatch.Put(key, binaryDBHash)

		// Update the chain head reference
		key = []byte{byte(TBL_CHAIN_HEAD)}
		key = append(key, common.D_CHAINID...)
		db.lbatch.Put(key, dblock.KeyMR.Bytes())

		err = db.lDb.Write(db.lbatch, db.wo)
		if err != nil {
			return err
		}

		// Update DirBlock Height cache
		db.lastDirBlkHeight = int64(dblock.Header.DBHeight)
		db.lastDirBlkSha, _ = wire.NewShaHash(dblock.DBHash.Bytes())
		db.lastDirBlkShaCached = true

	}
	return nil
}
예제 #2
0
// 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
}