Exemplo n.º 1
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// maybeCreateIndexes determines if each of the enabled indexes have already
// been created and creates them if not.
func (m *Manager) maybeCreateIndexes(dbTx database.Tx) error {
	indexesBucket := dbTx.Metadata().Bucket(indexTipsBucketName)
	for _, indexer := range m.enabledIndexes {
		// Nothing to do if the index tip already exists.
		idxKey := indexer.Key()
		if indexesBucket.Get(idxKey) != nil {
			continue
		}

		// The tip for the index does not exist, so create it and
		// invoke the create callback for the index so it can perform
		// any one-time initialization it requires.
		if err := indexer.Create(dbTx); err != nil {
			return err
		}

		// Set the tip for the index to values which represent an
		// uninitialized index (the genesis block hack and height).
		genesisBlockHash := m.params.GenesisBlock.BlockSha()
		err := dbPutIndexerTip(dbTx, idxKey, &genesisBlockHash, 0)
		if err != nil {
			return err
		}
	}

	return nil
}
Exemplo n.º 2
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// DbPutBestState uses an existing database transaction to update the best chain
// state with the given parameters.
func DbPutBestState(dbTx database.Tx, bcs BestChainState) error {
	// Serialize the current best chain state.
	serializedData := serializeBestChainState(bcs)

	// Store the current best chain state into the database.
	return dbTx.Metadata().Put(dbnamespace.StakeChainStateKeyName, serializedData)
}
Exemplo n.º 3
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// TxRegionsForAddress returns a slice of block regions which identify each
// transaction that involves the passed address according to the specified
// number to skip, number requested, and whether or not the results should be
// reversed.  It also returns the number actually skipped since it could be less
// in the case where there are not enough entries.
//
// NOTE: These results only include transactions confirmed in blocks.  See the
// UnconfirmedTxnsForAddress method for obtaining unconfirmed transactions
// that involve a given address.
//
// This function is safe for concurrent access.
func (idx *AddrIndex) TxRegionsForAddress(dbTx database.Tx, addr dcrutil.Address, numToSkip, numRequested uint32, reverse bool) ([]database.BlockRegion, uint32, error) {
	addrKey, err := addrToKey(addr, idx.chainParams)
	if err != nil {
		return nil, 0, err
	}

	var regions []database.BlockRegion
	var skipped uint32
	err = idx.db.View(func(dbTx database.Tx) error {
		// Create closure to lookup the block hash given the ID using
		// the database transaction.
		fetchBlockHash := func(id []byte) (chainhash.Hash, error) {
			// Deserialize and populate the result.
			return dbFetchBlockHashBySerializedID(dbTx, id)
		}

		var err error
		addrIdxBucket := dbTx.Metadata().Bucket(addrIndexKey)
		regions, skipped, err = dbFetchAddrIndexEntries(addrIdxBucket,
			addrKey, numToSkip, numRequested, reverse,
			fetchBlockHash)
		return err
	})

	return regions, skipped, err
}
Exemplo n.º 4
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// dbFetchTxIndexEntry uses an existing database transaction to fetch the block
// region for the provided transaction hash from the transaction index.  When
// there is no entry for the provided hash, nil will be returned for the both
// the region and the error.
func dbFetchTxIndexEntry(dbTx database.Tx, txHash chainhash.Hash) (*database.BlockRegion, error) {
	// Load the record from the database and return now if it doesn't exist.
	txIndex := dbTx.Metadata().Bucket(txIndexKey)
	serializedData := txIndex.Get(txHash[:])
	if len(serializedData) == 0 {
		return nil, nil
	}

	// Ensure the serialized data has enough bytes to properly deserialize.
	if len(serializedData) < 12 {
		return nil, database.Error{
			ErrorCode: database.ErrCorruption,
			Description: fmt.Sprintf("corrupt transaction index "+
				"entry for %s", txHash),
		}
	}

	// Load the block hash associated with the block ID.
	hash, err := dbFetchBlockHashBySerializedID(dbTx, serializedData[0:4])
	if err != nil {
		return nil, database.Error{
			ErrorCode: database.ErrCorruption,
			Description: fmt.Sprintf("corrupt transaction index "+
				"entry for %s: %v", txHash, err),
		}
	}

	// Deserialize the final entry.
	region := database.BlockRegion{Hash: &chainhash.Hash{}}
	copy(region.Hash[:], hash[:])
	region.Offset = byteOrder.Uint32(serializedData[4:8])
	region.Len = byteOrder.Uint32(serializedData[8:12])

	return &region, nil
}
Exemplo n.º 5
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// DbLoadAllTickets loads all the live tickets from the database into a treap.
func DbLoadAllTickets(dbTx database.Tx, ticketBucket []byte) (*tickettreap.Immutable, error) {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(ticketBucket)

	treap := tickettreap.NewImmutable()
	err := bucket.ForEach(func(k []byte, v []byte) error {
		if len(v) < 5 {
			return ticketDBError(ErrLoadAllTickets, fmt.Sprintf("short "+
				"read for ticket key %x when loading tickets", k))
		}

		h, err := chainhash.NewHash(k)
		if err != nil {
			return err
		}
		treapKey := tickettreap.Key(*h)
		missed, revoked, spent, expired := undoBitFlagsFromByte(v[4])
		treapValue := &tickettreap.Value{
			Height:  dbnamespace.ByteOrder.Uint32(v[0:4]),
			Missed:  missed,
			Revoked: revoked,
			Spent:   spent,
			Expired: expired,
		}

		treap = treap.Put(treapKey, treapValue)
		return nil
	})
	if err != nil {
		return nil, ticketDBError(ErrLoadAllTickets, fmt.Sprintf("failed to "+
			"load all tickets for the bucket %s", string(ticketBucket)))
	}

	return treap, nil
}
Exemplo n.º 6
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// DbPutDatabaseInfo uses an existing database transaction to store the database
// information.
func DbPutDatabaseInfo(dbTx database.Tx, dbi *DatabaseInfo) error {
	meta := dbTx.Metadata()
	subsidyBucket := meta.Bucket(dbnamespace.StakeDbInfoBucketName)
	val := serializeDatabaseInfo(dbi)

	// Store the current database info into the database.
	return subsidyBucket.Put(dbnamespace.StakeDbInfoBucketName, val[:])
}
Exemplo n.º 7
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// dbPutIndexerTip uses an existing database transaction to update or add the
// current tip for the given index to the provided values.
func dbPutIndexerTip(dbTx database.Tx, idxKey []byte, hash *chainhash.Hash, height uint32) error {
	serialized := make([]byte, chainhash.HashSize+4)
	copy(serialized, hash[:])
	byteOrder.PutUint32(serialized[chainhash.HashSize:], height)

	indexesBucket := dbTx.Metadata().Bucket(indexTipsBucketName)
	return indexesBucket.Put(idxKey, serialized)
}
Exemplo n.º 8
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// DbDropNewTickets drops new tickets for a mainchain block data at some height.
func DbDropNewTickets(dbTx database.Tx, height uint32) error {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(dbnamespace.TicketsInBlockBucketName)
	k := make([]byte, 4)
	dbnamespace.ByteOrder.PutUint32(k, height)

	return bucket.Delete(k)
}
Exemplo n.º 9
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// dbFetchBlockIDByHash uses an existing database transaction to retrieve the
// block id for the provided hash from the index.
func dbFetchBlockIDByHash(dbTx database.Tx, hash chainhash.Hash) (uint32, error) {
	hashIndex := dbTx.Metadata().Bucket(idByHashIndexBucketName)
	serializedID := hashIndex.Get(hash[:])
	if serializedID == nil {
		return 0, errNoBlockIDEntry
	}

	return byteOrder.Uint32(serializedID), nil
}
Exemplo n.º 10
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// DbPutBlockUndoData inserts block undo data into the database for a given height.
func DbPutBlockUndoData(dbTx database.Tx, height uint32, utds []UndoTicketData) error {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(dbnamespace.StakeBlockUndoDataBucketName)
	k := make([]byte, 4)
	dbnamespace.ByteOrder.PutUint32(k, height)
	v := serializeBlockUndoData(utds)

	return bucket.Put(k[:], v[:])
}
Exemplo n.º 11
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// DbPutNewTickets inserts new tickets for a mainchain block data into the
// database.
func DbPutNewTickets(dbTx database.Tx, height uint32, ths TicketHashes) error {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(dbnamespace.TicketsInBlockBucketName)
	k := make([]byte, 4)
	dbnamespace.ByteOrder.PutUint32(k, height)
	v := serializeTicketHashes(ths)

	return bucket.Put(k[:], v[:])
}
Exemplo n.º 12
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// DbFetchBestState uses an existing database transaction to fetch the best chain
// state.
func DbFetchBestState(dbTx database.Tx) (BestChainState, error) {
	meta := dbTx.Metadata()
	v := meta.Get(dbnamespace.StakeChainStateKeyName)
	if v == nil {
		return BestChainState{}, ticketDBError(ErrMissingKey,
			"missing key for chain state data")
	}

	return deserializeBestChainState(v)
}
Exemplo n.º 13
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// dbRemoveTxIndexEntry uses an existing database transaction to remove the most
// recent transaction index entry for the given hash.
func dbRemoveTxIndexEntry(dbTx database.Tx, txHash chainhash.Hash) error {
	txIndex := dbTx.Metadata().Bucket(txIndexKey)
	serializedData := txIndex.Get(txHash[:])
	if len(serializedData) == 0 {
		return fmt.Errorf("can't remove non-existent transaction %s "+
			"from the transaction index", txHash)
	}

	return txIndex.Delete(txHash[:])
}
Exemplo n.º 14
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// dbFetchBlockHashBySerializedID uses an existing database transaction to
// retrieve the hash for the provided serialized block id from the index.
func dbFetchBlockHashBySerializedID(dbTx database.Tx, serializedID []byte) (chainhash.Hash, error) {
	idIndex := dbTx.Metadata().Bucket(hashByIDIndexBucketName)
	hashBytes := idIndex.Get(serializedID)
	if hashBytes == nil {
		return chainhash.Hash{}, errNoBlockIDEntry
	}

	var hash chainhash.Hash
	copy(hash[:], hashBytes)
	return hash, nil
}
Exemplo n.º 15
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// DbCreate initializes all the buckets required for the database and stores
// the current database version information.
func DbCreate(dbTx database.Tx) error {
	meta := dbTx.Metadata()

	// Create the bucket that houses information about the database's
	// creation and version.
	_, err := meta.CreateBucket(dbnamespace.StakeDbInfoBucketName)
	if err != nil {
		return err
	}

	dbInfo := &DatabaseInfo{
		Version:        currentDatabaseVersion,
		Date:           time.Now(),
		UpgradeStarted: false,
	}
	err = DbPutDatabaseInfo(dbTx, dbInfo)
	if err != nil {
		return err
	}

	// Create the bucket that houses the live tickets of the best node.
	_, err = meta.CreateBucket(dbnamespace.LiveTicketsBucketName)
	if err != nil {
		return err
	}

	// Create the bucket that houses the missed tickets of the best node.
	_, err = meta.CreateBucket(dbnamespace.MissedTicketsBucketName)
	if err != nil {
		return err
	}

	// Create the bucket that houses the revoked tickets of the best node.
	_, err = meta.CreateBucket(dbnamespace.RevokedTicketsBucketName)
	if err != nil {
		return err
	}

	// Create the bucket that houses block undo data for stake states on
	// the main chain.
	_, err = meta.CreateBucket(dbnamespace.StakeBlockUndoDataBucketName)
	if err != nil {
		return err
	}

	// Create the bucket that houses the tickets that were added with
	// this block into the main chain.
	_, err = meta.CreateBucket(dbnamespace.TicketsInBlockBucketName)
	if err != nil {
		return err
	}

	return nil
}
Exemplo n.º 16
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// DbPutTicket inserts a ticket into one of the ticket database buckets.
func DbPutTicket(dbTx database.Tx, ticketBucket []byte, hash *chainhash.Hash,
	height uint32, missed, revoked, spent, expired bool) error {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(ticketBucket)
	k := hash[:]
	v := make([]byte, 5)
	dbnamespace.ByteOrder.PutUint32(v, height)
	v[4] = undoBitFlagsToByte(missed, revoked, spent, expired)

	return bucket.Put(k[:], v[:])
}
Exemplo n.º 17
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// Create is invoked when the indexer manager determines the index needs
// to be created for the first time.  It creates the buckets for the hash-based
// transaction index and the internal block ID indexes.
//
// This is part of the Indexer interface.
func (idx *TxIndex) Create(dbTx database.Tx) error {
	meta := dbTx.Metadata()
	if _, err := meta.CreateBucket(idByHashIndexBucketName); err != nil {
		return err
	}
	if _, err := meta.CreateBucket(hashByIDIndexBucketName); err != nil {
		return err
	}
	_, err := meta.CreateBucket(txIndexKey)
	return err
}
Exemplo n.º 18
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// DbDeleteTicket removes a ticket from one of the ticket database buckets. This
// differs from the bucket deletion method in that it will fail if the value
// itself is missing.
func DbDeleteTicket(dbTx database.Tx, ticketBucket []byte, hash *chainhash.Hash) error {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(ticketBucket)

	// Check to see if the value exists before we delete it.
	v := bucket.Get(hash[:])
	if v == nil {
		return ticketDBError(ErrMissingKey, fmt.Sprintf("missing key %v "+
			"to delete", hash))
	}

	return bucket.Delete(hash[:])
}
Exemplo n.º 19
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// DbFetchBlockUndoData fetches block undo data from the database.
func DbFetchBlockUndoData(dbTx database.Tx, height uint32) ([]UndoTicketData, error) {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(dbnamespace.StakeBlockUndoDataBucketName)

	k := make([]byte, 4)
	dbnamespace.ByteOrder.PutUint32(k, height)
	v := bucket.Get(k)
	if v == nil {
		return nil, ticketDBError(ErrMissingKey,
			fmt.Sprintf("missing key %v for block undo data", height))
	}

	return deserializeBlockUndoData(v)
}
Exemplo n.º 20
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// DbFetchNewTickets fetches new tickets for a mainchain block from the database.
func DbFetchNewTickets(dbTx database.Tx, height uint32) (TicketHashes, error) {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(dbnamespace.TicketsInBlockBucketName)

	k := make([]byte, 4)
	dbnamespace.ByteOrder.PutUint32(k, height)
	v := bucket.Get(k)
	if v == nil {
		return nil, ticketDBError(ErrMissingKey,
			fmt.Sprintf("missing key %v for new tickets", height))
	}

	return deserializeTicketHashes(v)
}
Exemplo n.º 21
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// dbPutBlockIDIndexEntry uses an existing database transaction to update or add
// the index entries for the hash to id and id to hash mappings for the provided
// values.
func dbPutBlockIDIndexEntry(dbTx database.Tx, hash chainhash.Hash, id uint32) error {
	// Serialize the height for use in the index entries.
	var serializedID [4]byte
	byteOrder.PutUint32(serializedID[:], id)

	// Add the block hash to ID mapping to the index.
	meta := dbTx.Metadata()
	hashIndex := meta.Bucket(idByHashIndexBucketName)
	if err := hashIndex.Put(hash[:], serializedID[:]); err != nil {
		return err
	}

	// Add the block ID to hash mapping to the index.
	idIndex := meta.Bucket(hashByIDIndexBucketName)
	return idIndex.Put(serializedID[:], hash[:])
}
Exemplo n.º 22
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// DbFetchDatabaseInfo uses an existing database transaction to
// fetch the database versioning and creation information.
func DbFetchDatabaseInfo(dbTx database.Tx) (*DatabaseInfo, error) {
	meta := dbTx.Metadata()
	bucket := meta.Bucket(dbnamespace.StakeDbInfoBucketName)

	// Uninitialized state.
	if bucket == nil {
		return nil, nil
	}

	dbInfoBytes := bucket.Get(dbnamespace.StakeDbInfoBucketName)
	if dbInfoBytes == nil {
		return nil, ticketDBError(ErrMissingKey, "missing key for database info")
	}

	return deserializeDatabaseInfo(dbInfoBytes)
}
Exemplo n.º 23
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// dbRemoveBlockIDIndexEntry uses an existing database transaction remove index
// entries from the hash to id and id to hash mappings for the provided hash.
func dbRemoveBlockIDIndexEntry(dbTx database.Tx, hash chainhash.Hash) error {
	// Remove the block hash to ID mapping.
	meta := dbTx.Metadata()
	hashIndex := meta.Bucket(idByHashIndexBucketName)
	serializedID := hashIndex.Get(hash[:])
	if serializedID == nil {
		return nil
	}
	if err := hashIndex.Delete(hash[:]); err != nil {
		return err
	}

	// Remove the block ID to hash mapping.
	idIndex := meta.Bucket(hashByIDIndexBucketName)
	return idIndex.Delete(serializedID)
}
Exemplo n.º 24
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// dbFetchIndexerTip uses an existing database transaction to retrieve the
// hash and height of the current tip for the provided index.
func dbFetchIndexerTip(dbTx database.Tx, idxKey []byte) (*chainhash.Hash, uint32, error) {
	indexesBucket := dbTx.Metadata().Bucket(indexTipsBucketName)
	serialized := indexesBucket.Get(idxKey)
	if len(serialized) < chainhash.HashSize+4 {
		return nil, 0, database.Error{
			ErrorCode: database.ErrCorruption,
			Description: fmt.Sprintf("unexpected end of data for "+
				"index %q tip", string(idxKey)),
		}
	}

	var hash chainhash.Hash
	copy(hash[:], serialized[:chainhash.HashSize])
	height := byteOrder.Uint32(serialized[chainhash.HashSize:])
	return &hash, height, nil
}
Exemplo n.º 25
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// DisconnectBlock is invoked by the index manager when a block has been
// disconnected from the main chain.  This indexer removes the address mappings
// each transaction in the block involve.
//
// This is part of the Indexer interface.
func (idx *AddrIndex) DisconnectBlock(dbTx database.Tx, block, parent *dcrutil.Block, view *blockchain.UtxoViewpoint) error {
	// Build all of the address to transaction mappings in a local map.
	addrsToTxns := make(writeIndexData)
	idx.indexBlock(addrsToTxns, block, parent, view)

	// Remove all of the index entries for each address.
	bucket := dbTx.Metadata().Bucket(addrIndexKey)
	for addrKey, txIdxs := range addrsToTxns {
		err := dbRemoveAddrIndexEntries(bucket, addrKey, len(txIdxs))
		if err != nil {
			return err
		}
	}

	return nil
}
Exemplo n.º 26
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// ConnectBlock is invoked by the index manager when a new block has been
// connected to the main chain.  This indexer adds a mapping for each address
// the transactions in the block involve.
//
// This is part of the Indexer interface.
func (idx *AddrIndex) ConnectBlock(dbTx database.Tx, block, parent *dcrutil.Block,
	view *blockchain.UtxoViewpoint) error {
	// The offset and length of the transactions within the serialized
	// block for the regular transactions of the previous block, if
	// applicable.
	regularTxTreeValid := dcrutil.IsFlagSet16(block.MsgBlock().Header.VoteBits,
		dcrutil.BlockValid)
	var parentTxLocs []wire.TxLoc
	var parentBlockID uint32
	if regularTxTreeValid && block.Height() > 1 {
		var err error
		parentTxLocs, _, err = parent.TxLoc()
		if err != nil {
			return err
		}

		parentSha := parent.Sha()
		parentBlockID, err = dbFetchBlockIDByHash(dbTx, *parentSha)
		if err != nil {
			return err
		}
	}

	// The offset and length of the transactions within the serialized
	// block for the added stake transactions.
	_, blockStxLocs, err := block.TxLoc()
	if err != nil {
		return err
	}

	// Nothing to index, just return.
	if len(parentTxLocs)+len(blockStxLocs) == 0 {
		return nil
	}

	// Get the internal block ID associated with the block.
	blockSha := block.Sha()
	blockID, err := dbFetchBlockIDByHash(dbTx, *blockSha)
	if err != nil {
		return err
	}

	// Build all of the address to transaction mappings in a local map.
	addrsToTxns := make(writeIndexData)
	idx.indexBlock(addrsToTxns, block, parent, view)

	// Add all of the index entries for each address.
	stakeIdxsStart := len(parentTxLocs)
	allTxLocs := append(parentTxLocs, blockStxLocs...)
	addrIdxBucket := dbTx.Metadata().Bucket(addrIndexKey)
	for addrKey, txIdxs := range addrsToTxns {
		for _, txIdx := range txIdxs {
			// Switch to using the newest block ID for the stake transactions,
			// since these are not from the parent. Offset the index to be
			// correct for the location in this given block.
			blockIDToUse := parentBlockID
			if txIdx >= stakeIdxsStart {
				blockIDToUse = blockID
			}

			err := dbPutAddrIndexEntry(addrIdxBucket, addrKey,
				blockIDToUse, allTxLocs[txIdx])
			if err != nil {
				return err
			}
		}
	}

	return nil
}
Exemplo n.º 27
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// ConnectBlock is invoked by the index manager when a new block has been
// connected to the main chain.  This indexer adds a key for each address
// the transactions in the block involve.
//
// This is part of the Indexer interface.
func (idx *ExistsAddrIndex) ConnectBlock(dbTx database.Tx, block, parent *dcrutil.Block, view *blockchain.UtxoViewpoint) error {
	regularTxTreeValid := dcrutil.IsFlagSet16(block.MsgBlock().Header.VoteBits,
		dcrutil.BlockValid)
	var parentTxs []*dcrutil.Tx
	if regularTxTreeValid && block.Height() > 1 {
		parentTxs = parent.Transactions()
	}
	blockTxns := block.STransactions()
	allTxns := append(parentTxs, blockTxns...)

	usedAddrs := make(map[[addrKeySize]byte]struct{})

	for _, tx := range allTxns {
		msgTx := tx.MsgTx()
		isSStx, _ := stake.IsSStx(msgTx)
		for _, txIn := range msgTx.TxIn {
			if txscript.IsMultisigSigScript(txIn.SignatureScript) {
				rs, err :=
					txscript.MultisigRedeemScriptFromScriptSig(
						txIn.SignatureScript)
				if err != nil {
					continue
				}

				class, addrs, _, err := txscript.ExtractPkScriptAddrs(
					txscript.DefaultScriptVersion, rs, idx.chainParams)
				if err != nil {
					// Non-standard outputs are skipped.
					continue
				}
				if class != txscript.MultiSigTy {
					// This should never happen, but be paranoid.
					continue
				}

				for _, addr := range addrs {
					k, err := addrToKey(addr, idx.chainParams)
					if err != nil {
						continue
					}

					usedAddrs[k] = struct{}{}
				}
			}
		}

		for _, txOut := range tx.MsgTx().TxOut {
			class, addrs, _, err := txscript.ExtractPkScriptAddrs(
				txOut.Version, txOut.PkScript, idx.chainParams)
			if err != nil {
				// Non-standard outputs are skipped.
				continue
			}

			if isSStx && class == txscript.NullDataTy {
				addr, err := stake.AddrFromSStxPkScrCommitment(txOut.PkScript,
					idx.chainParams)
				if err != nil {
					// Ignore unsupported address types.
					continue
				}

				addrs = append(addrs, addr)
			}

			for _, addr := range addrs {
				k, err := addrToKey(addr, idx.chainParams)
				if err != nil {
					// Ignore unsupported address types.
					continue
				}

				usedAddrs[k] = struct{}{}
			}
		}
	}

	// Write all the newly used addresses to the database,
	// skipping any keys that already exist. Write any
	// addresses we see in mempool at this time, too,
	// then remove them from the unconfirmed map drop
	// dropping the old map and reassigning a new map.
	idx.unconfirmedLock.Lock()
	for k := range idx.mpExistsAddr {
		usedAddrs[k] = struct{}{}
	}
	idx.mpExistsAddr = make(map[[addrKeySize]byte]struct{})
	idx.unconfirmedLock.Unlock()

	meta := dbTx.Metadata()
	existsAddrIndex := meta.Bucket(existsAddrIndexKey)
	newUsedAddrs := make(map[[addrKeySize]byte]struct{})
	for k := range usedAddrs {
		if !idx.existsAddress(existsAddrIndex, k) {
			newUsedAddrs[k] = struct{}{}
		}
	}

	for k := range newUsedAddrs {
		err := dbPutExistsAddr(existsAddrIndex, k)
		if err != nil {
			return err
		}
	}

	return nil
}
Exemplo n.º 28
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// dbPutTxIndexEntry uses an existing database transaction to update the
// transaction index given the provided serialized data that is expected to have
// been serialized putTxIndexEntry.
func dbPutTxIndexEntry(dbTx database.Tx, txHash chainhash.Hash, serializedData []byte) error {
	txIndex := dbTx.Metadata().Bucket(txIndexKey)
	return txIndex.Put(txHash[:], serializedData)
}
Exemplo n.º 29
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// Create is invoked when the indexer manager determines the index needs
// to be created for the first time.  It creates the bucket for the address
// index.
//
// This is part of the Indexer interface.
func (idx *ExistsAddrIndex) Create(dbTx database.Tx) error {
	_, err := dbTx.Metadata().CreateBucket(existsAddrIndexKey)
	return err
}