| /* |
| * 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.db.commitlog; |
| |
| import java.io.File; |
| |
| import org.apache.cassandra.db.Mutation; |
| import org.apache.cassandra.io.util.FileUtils; |
| |
| public class CommitLogSegmentManagerStandard extends AbstractCommitLogSegmentManager |
| { |
| public CommitLogSegmentManagerStandard(final CommitLog commitLog, String storageDirectory) |
| { |
| super(commitLog, storageDirectory); |
| } |
| |
| public void discard(CommitLogSegment segment, boolean delete) |
| { |
| segment.close(); |
| if (delete) |
| FileUtils.deleteWithConfirm(segment.logFile); |
| addSize(-segment.onDiskSize()); |
| } |
| |
| /** |
| * Initiates the shutdown process for the management thread. |
| */ |
| public void shutdown() |
| { |
| run = false; |
| wakeManager(); |
| } |
| |
| /** |
| * Reserve space in the current segment for the provided mutation or, if there isn't space available, |
| * create a new segment. allocate() is blocking until allocation succeeds as it waits on a signal in advanceAllocatingFrom |
| * |
| * @param mutation mutation to allocate space for |
| * @param size total size of mutation (overhead + serialized size) |
| * @return the provided Allocation object |
| */ |
| public CommitLogSegment.Allocation allocate(Mutation mutation, int size) |
| { |
| CommitLogSegment segment = allocatingFrom(); |
| |
| CommitLogSegment.Allocation alloc; |
| while ( null == (alloc = segment.allocate(mutation, size)) ) |
| { |
| // failed to allocate, so move to a new segment with enough room |
| advanceAllocatingFrom(segment); |
| segment = allocatingFrom; |
| } |
| |
| return alloc; |
| } |
| |
| /** |
| * Simply delete untracked segment files w/standard, as it'll be flushed to sstables during recovery |
| * |
| * @param file segment file that is no longer in use. |
| */ |
| void handleReplayedSegment(final File file) |
| { |
| // (don't decrease managed size, since this was never a "live" segment) |
| logger.trace("(Unopened) segment {} is no longer needed and will be deleted now", file); |
| FileUtils.deleteWithConfirm(file); |
| } |
| |
| public CommitLogSegment createSegment() |
| { |
| return CommitLogSegment.createSegment(commitLog, this, () -> wakeManager()); |
| } |
| } |