| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cassandra.io.sstable; |
| |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.Collections; |
| import java.util.concurrent.atomic.AtomicReference; |
| import java.util.stream.Stream; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.db.DecoratedKey; |
| import org.apache.cassandra.db.RegularAndStaticColumns; |
| import org.apache.cassandra.db.SerializationHeader; |
| import org.apache.cassandra.db.partitions.PartitionUpdate; |
| import org.apache.cassandra.db.rows.EncodingStats; |
| import org.apache.cassandra.io.sstable.format.SSTableFormat; |
| import org.apache.cassandra.io.util.File; |
| import org.apache.cassandra.schema.TableMetadataRef; |
| import org.apache.cassandra.service.ActiveRepairService; |
| |
| /** |
| * Base class for the sstable writers used by CQLSSTableWriter. |
| */ |
| abstract class AbstractSSTableSimpleWriter implements Closeable |
| { |
| protected final File directory; |
| protected final TableMetadataRef metadata; |
| protected final RegularAndStaticColumns columns; |
| protected SSTableFormat<?, ?> format = DatabaseDescriptor.getSelectedSSTableFormat(); |
| protected static final AtomicReference<SSTableId> id = new AtomicReference<>(SSTableIdFactory.instance.defaultBuilder().generator(Stream.empty()).get()); |
| protected boolean makeRangeAware = false; |
| |
| protected AbstractSSTableSimpleWriter(File directory, TableMetadataRef metadata, RegularAndStaticColumns columns) |
| { |
| this.metadata = metadata; |
| this.directory = directory; |
| this.columns = columns; |
| } |
| |
| protected void setSSTableFormatType(SSTableFormat<?, ?> type) |
| { |
| this.format = type; |
| } |
| |
| protected void setRangeAwareWriting(boolean makeRangeAware) |
| { |
| this.makeRangeAware = makeRangeAware; |
| } |
| |
| protected SSTableTxnWriter createWriter(SSTable.Owner owner) throws IOException |
| { |
| SerializationHeader header = new SerializationHeader(true, metadata.get(), columns, EncodingStats.NO_STATS); |
| |
| if (makeRangeAware) |
| return SSTableTxnWriter.createRangeAware(metadata, 0, ActiveRepairService.UNREPAIRED_SSTABLE, ActiveRepairService.NO_PENDING_REPAIR, false, format, 0, header); |
| |
| return SSTableTxnWriter.create(metadata, |
| createDescriptor(directory, metadata.keyspace, metadata.name, format), |
| 0, |
| ActiveRepairService.UNREPAIRED_SSTABLE, |
| ActiveRepairService.NO_PENDING_REPAIR, |
| false, |
| 0, |
| header, |
| Collections.emptySet(), |
| owner); |
| } |
| |
| private static Descriptor createDescriptor(File directory, final String keyspace, final String columnFamily, final SSTableFormat<?, ?> fmt) throws IOException |
| { |
| SSTableId nextGen = getNextId(directory, columnFamily); |
| return new Descriptor(directory, keyspace, columnFamily, nextGen, fmt); |
| } |
| |
| private static SSTableId getNextId(File directory, final String columnFamily) throws IOException |
| { |
| while (true) |
| { |
| try (Stream<Path> existingPaths = Files.list(directory.toPath())) |
| { |
| Stream<SSTableId> existingIds = existingPaths.map(File::new) |
| .map(SSTable::tryDescriptorFromFile) |
| .filter(d -> d != null && d.cfname.equals(columnFamily)) |
| .map(d -> d.id); |
| |
| SSTableId lastId = id.get(); |
| SSTableId newId = SSTableIdFactory.instance.defaultBuilder().generator(Stream.concat(existingIds, Stream.of(lastId))).get(); |
| if (id.compareAndSet(lastId, newId)) |
| return newId; |
| } |
| } |
| } |
| |
| PartitionUpdate.Builder getUpdateFor(ByteBuffer key) throws IOException |
| { |
| return getUpdateFor(metadata.get().partitioner.decorateKey(key)); |
| } |
| |
| /** |
| * Returns a PartitionUpdate suitable to write on this writer for the provided key. |
| * |
| * @param key they partition key for which the returned update will be. |
| * @return an update on partition {@code key} that is tied to this writer. |
| */ |
| abstract PartitionUpdate.Builder getUpdateFor(DecoratedKey key) throws IOException; |
| } |
| |