| /* |
| * 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.hints; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.file.Files; |
| import java.nio.file.StandardOpenOption; |
| import java.util.Iterator; |
| import java.util.UUID; |
| import java.util.concurrent.TimeUnit; |
| import java.util.function.Function; |
| |
| import com.google.common.collect.Iterables; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.SchemaLoader; |
| import org.apache.cassandra.db.Mutation; |
| import org.apache.cassandra.db.RowUpdateBuilder; |
| import org.apache.cassandra.db.marshal.ValueAccessors; |
| import org.apache.cassandra.db.rows.Cell; |
| import org.apache.cassandra.db.rows.Row; |
| import org.apache.cassandra.exceptions.UnknownTableException; |
| import org.apache.cassandra.io.FSReadError; |
| import org.apache.cassandra.io.util.DataInputBuffer; |
| import org.apache.cassandra.io.util.FileUtils; |
| import org.apache.cassandra.schema.KeyspaceParams; |
| import org.apache.cassandra.schema.MigrationManager; |
| import org.apache.cassandra.schema.Schema; |
| import org.apache.cassandra.schema.TableMetadata; |
| |
| import static junit.framework.Assert.assertEquals; |
| import static junit.framework.Assert.assertNotNull; |
| import static org.apache.cassandra.Util.dk; |
| import static org.apache.cassandra.utils.ByteBufferUtil.bytes; |
| |
| public class HintsReaderTest |
| { |
| private static final String CF_STANDARD1 = "Standard1"; |
| private static final String CF_STANDARD2 = "Standard2"; |
| |
| private static HintsDescriptor descriptor; |
| |
| private static File directory; |
| |
| @BeforeClass |
| public static void defineSchema() throws Exception |
| { |
| SchemaLoader.prepareServer(); |
| |
| descriptor = new HintsDescriptor(UUID.randomUUID(), System.currentTimeMillis()); |
| } |
| |
| private static Mutation createMutation(int index, long timestamp, String ks, String tb) |
| { |
| TableMetadata table = Schema.instance.getTableMetadata(ks, tb); |
| return new RowUpdateBuilder(table, timestamp, bytes(index)) |
| .clustering(bytes(index)) |
| .add("val", bytes(index)) |
| .build(); |
| } |
| |
| private void generateHints(int num, String ks) throws IOException |
| { |
| try (HintsWriter writer = HintsWriter.create(directory, descriptor)) |
| { |
| ByteBuffer buffer = ByteBuffer.allocateDirect(256 * 1024); |
| try (HintsWriter.Session session = writer.newSession(buffer)) |
| { |
| for (int i = 0; i < num; i++) |
| { |
| long timestamp = descriptor.timestamp + i; |
| Mutation m = createMutation(i, TimeUnit.MILLISECONDS.toMicros(timestamp), ks, CF_STANDARD1); |
| session.append(Hint.create(m, timestamp)); |
| m = createMutation(i, TimeUnit.MILLISECONDS.toMicros(timestamp), ks, CF_STANDARD2); |
| session.append(Hint.create(m, timestamp)); |
| } |
| } |
| FileUtils.clean(buffer); |
| } |
| } |
| |
| private void readHints(int num, int numTable) |
| { |
| readAndVerify(num, numTable, HintsReader.Page::hintsIterator); |
| readAndVerify(num, numTable, this::deserializePageBuffers); |
| } |
| |
| private void readAndVerify(int num, int numTable, Function<HintsReader.Page, Iterator<Hint>> getHints) |
| { |
| long baseTimestamp = descriptor.timestamp; |
| int index = 0; |
| try (HintsReader reader = HintsReader.open(new File(directory, descriptor.fileName()))) |
| { |
| for (HintsReader.Page page : reader) |
| { |
| Iterator<Hint> hints = getHints.apply(page); |
| while (hints.hasNext()) |
| { |
| int i = index / numTable; |
| Hint hint = hints.next(); |
| if (hint != null) |
| { |
| verifyHint(hint, baseTimestamp, i); |
| index++; |
| } |
| } |
| } |
| } |
| assertEquals(index, num); |
| } |
| |
| private void verifyHint(Hint hint, long baseTimestamp, int i) |
| { |
| long timestamp = baseTimestamp + i; |
| Mutation mutation = hint.mutation; |
| |
| assertEquals(timestamp, hint.creationTime); |
| assertEquals(dk(bytes(i)), mutation.key()); |
| |
| Row row = mutation.getPartitionUpdates().iterator().next().iterator().next(); |
| assertEquals(1, Iterables.size(row.cells())); |
| ValueAccessors.assertDataEquals(bytes(i), row.clustering().get(0)); |
| Cell<?> cell = row.cells().iterator().next(); |
| assertNotNull(cell); |
| ValueAccessors.assertDataEquals(bytes(i), cell.buffer()); |
| assertEquals(timestamp * 1000, cell.timestamp()); |
| } |
| |
| |
| private Iterator<Hint> deserializePageBuffers(HintsReader.Page page) |
| { |
| final Iterator<ByteBuffer> buffers = page.buffersIterator(); |
| return new Iterator<Hint>() |
| { |
| public boolean hasNext() |
| { |
| return buffers.hasNext(); |
| } |
| |
| public Hint next() |
| { |
| try |
| { |
| return Hint.serializer.deserialize(new DataInputBuffer(buffers.next(), false), |
| descriptor.messagingVersion()); |
| } |
| catch (UnknownTableException e) |
| { |
| return null; // ignore |
| } |
| catch (IOException e) |
| { |
| throw new RuntimeException("Unexpected error deserializing hint", e); |
| } |
| } |
| }; |
| } |
| |
| @Test |
| public void corruptFile() throws IOException |
| { |
| corruptFileHelper(new byte[100], "corruptFile"); |
| } |
| |
| @Test(expected = FSReadError.class) |
| public void corruptFileNotAllZeros() throws IOException |
| { |
| byte [] bs = new byte[100]; |
| bs[50] = 1; |
| corruptFileHelper(bs, "corruptFileNotAllZeros"); |
| } |
| |
| private void corruptFileHelper(byte[] toAppend, String ks) throws IOException |
| { |
| SchemaLoader.createKeyspace(ks, |
| KeyspaceParams.simple(1), |
| SchemaLoader.standardCFMD(ks, CF_STANDARD1), |
| SchemaLoader.standardCFMD(ks, CF_STANDARD2)); |
| int numTable = 2; |
| directory = Files.createTempDirectory(null).toFile(); |
| try |
| { |
| generateHints(3, ks); |
| File hintFile = new File(directory, descriptor.fileName()); |
| Files.write(hintFile.toPath(), toAppend, StandardOpenOption.APPEND); |
| readHints(3 * numTable, numTable); |
| } |
| finally |
| { |
| directory.delete(); |
| } |
| } |
| |
| @Test |
| public void testNormalRead() throws IOException |
| { |
| String ks = "testNormalRead"; |
| SchemaLoader.createKeyspace(ks, |
| KeyspaceParams.simple(1), |
| SchemaLoader.standardCFMD(ks, CF_STANDARD1), |
| SchemaLoader.standardCFMD(ks, CF_STANDARD2)); |
| int numTable = 2; |
| directory = Files.createTempDirectory(null).toFile(); |
| try |
| { |
| generateHints(3, ks); |
| readHints(3 * numTable, numTable); |
| } |
| finally |
| { |
| directory.delete(); |
| } |
| } |
| |
| @Test |
| public void testDroppedTableRead() throws IOException |
| { |
| String ks = "testDroppedTableRead"; |
| SchemaLoader.createKeyspace(ks, |
| KeyspaceParams.simple(1), |
| SchemaLoader.standardCFMD(ks, CF_STANDARD1), |
| SchemaLoader.standardCFMD(ks, CF_STANDARD2)); |
| |
| directory = Files.createTempDirectory(null).toFile(); |
| try |
| { |
| generateHints(3, ks); |
| MigrationManager.announceTableDrop(ks, CF_STANDARD1, true); |
| readHints(3, 1); |
| } |
| finally |
| { |
| directory.delete(); |
| } |
| } |
| } |