def new(cls, io): IO_SIZE = 1000 BUFFER_SIZE = 10000 INDEX_COUNT = 50 OUTPOINTS_SIZE = 1000 fileheader = FileHeader() io.write(FileHeaderSerializer.serialize(fileheader)) #write chunks chunkfile = ChunkFile(io) chunkfile.append_chunk( LOG_INDEX_NAME, INDEX_COUNT * LogIndexEntrySerializer.SERIALIZED_LENGTH) chunkfile.append_chunk( LOG_BUFFER_NAME, BUFFER_SIZE ) chunkfile.append_chunk( OUTPOINTS_NAME, OUTPOINTS_SIZE ) #Load log index and log buffer _, _logindexheader, logindexio = chunkfile.open_chunk(LOG_INDEX_NAME) logindex_reader = LogIndexReader(logindexio, INDEX_COUNT) logindex = SerializedLogIndex.new(logindex_reader) _, logbufferheader, logbufferio = chunkfile.open_chunk(LOG_BUFFER_NAME) buffer_reader = LogBufferReader(logbufferio, logbufferheader.length) logbuffer = LogBuffer(buffer_reader) # format other chunks ( not transactionally) _, outpointsheader, outpointsio = chunkfile.open_chunk(OUTPOINTS_NAME) outpoint_dict = SerializedDict.new(outpointsio, outpointsheader.length, serializer=OutpointIndexSerializer) SerializedItemSet.load(outpoint_dict) # txlog = TransactionLog(chunkfile, logindex, logbuffer) outpointchunk, outpointchunkheader = chunkfile.get_chunk(OUTPOINTS_NAME) outpoint_io = TransactionalIO(txlog, outpointchunk) outpoint_reader = SerializedDict.load(outpoint_io, OUTPOINTS_SIZE, OutpointIndexSerializer) outpoints = SerializedItemSet.load(outpoint_reader) return cls(txlog, outpoints)
def new(cls, io): IO_SIZE = 1000 BUFFER_SIZE = 10000 INDEX_COUNT = 50 OUTPOINTS_SIZE = 1000 fileheader = FileHeader() io.write(FileHeaderSerializer.serialize(fileheader)) #write chunks chunkfile = ChunkFile(io) chunkfile.append_chunk( LOG_INDEX_NAME, INDEX_COUNT * LogIndexEntrySerializer.SERIALIZED_LENGTH) chunkfile.append_chunk(LOG_BUFFER_NAME, BUFFER_SIZE) chunkfile.append_chunk(OUTPOINTS_NAME, OUTPOINTS_SIZE) #Load log index and log buffer _, _logindexheader, logindexio = chunkfile.open_chunk(LOG_INDEX_NAME) logindex_reader = LogIndexReader(logindexio, INDEX_COUNT) logindex = SerializedLogIndex.new(logindex_reader) _, logbufferheader, logbufferio = chunkfile.open_chunk(LOG_BUFFER_NAME) buffer_reader = LogBufferReader(logbufferio, logbufferheader.length) logbuffer = LogBuffer(buffer_reader) # format other chunks ( not transactionally) _, outpointsheader, outpointsio = chunkfile.open_chunk(OUTPOINTS_NAME) outpoint_dict = SerializedDict.new(outpointsio, outpointsheader.length, serializer=OutpointIndexSerializer) SerializedItemSet.load(outpoint_dict) # txlog = TransactionLog(chunkfile, logindex, logbuffer) outpointchunk, outpointchunkheader = chunkfile.get_chunk( OUTPOINTS_NAME) outpoint_io = TransactionalIO(txlog, outpointchunk) outpoint_reader = SerializedDict.load(outpoint_io, OUTPOINTS_SIZE, OutpointIndexSerializer) outpoints = SerializedItemSet.load(outpoint_reader) return cls(txlog, outpoints)