| /* |
| * 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.IOException; |
| |
| import org.apache.cassandra.io.util.File; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.db.Mutation; |
| import org.apache.cassandra.db.rows.DeserializationHelper; |
| import org.apache.cassandra.io.util.DataInputBuffer; |
| import org.apache.cassandra.io.util.RebufferingInputStream; |
| |
| /** |
| * Utility class that flags the replayer as having seen a CDC mutation and calculates offset but doesn't apply mutations |
| */ |
| public class CDCTestReplayer extends CommitLogReplayer |
| { |
| private static final Logger logger = LoggerFactory.getLogger(CDCTestReplayer.class); |
| |
| public CDCTestReplayer() throws IOException |
| { |
| super(CommitLog.instance, CommitLogPosition.NONE, null, ReplayFilter.create()); |
| CommitLog.instance.sync(true); |
| commitLogReader = new CommitLogTestReader(); |
| } |
| |
| public void examineCommitLog() throws IOException |
| { |
| replayFiles(new File(DatabaseDescriptor.getCommitLogLocation()).tryList()); |
| } |
| |
| private class CommitLogTestReader extends CommitLogReader |
| { |
| @Override |
| protected void readMutation(CommitLogReadHandler handler, |
| byte[] inputBuffer, |
| int size, |
| CommitLogPosition minPosition, |
| final int entryLocation, |
| final CommitLogDescriptor desc) throws IOException |
| { |
| RebufferingInputStream bufIn = new DataInputBuffer(inputBuffer, 0, size); |
| Mutation mutation; |
| try |
| { |
| mutation = Mutation.serializer.deserialize(bufIn, desc.getMessagingVersion(), DeserializationHelper.Flag.LOCAL); |
| if (mutation.trackedByCDC()) |
| sawCDCMutation = true; |
| } |
| catch (IOException e) |
| { |
| // Test fails. |
| throw new AssertionError(e); |
| } |
| } |
| } |
| } |