| /* |
| * 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.jackrabbit.oak.segment.file.tar.binaries; |
| |
| import static org.apache.jackrabbit.oak.segment.file.tar.binaries.BinaryReferencesIndexLoaderV2.FOOTER_SIZE; |
| import static org.apache.jackrabbit.oak.segment.file.tar.binaries.BinaryReferencesIndexLoaderV2.MAGIC; |
| import static org.apache.jackrabbit.oak.segment.file.tar.binaries.BinaryReferencesIndexLoaderV2.loadBinaryReferencesIndex; |
| import static org.apache.jackrabbit.oak.segment.file.tar.binaries.BinaryReferencesIndexLoaderV2.parseBinaryReferencesIndex; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| |
| import java.nio.ByteBuffer; |
| import java.util.zip.CRC32; |
| |
| import com.google.common.base.Charsets; |
| import org.junit.Test; |
| |
| public class BinaryReferencesIndexLoaderV2Test { |
| |
| private static int length(String s) { |
| return bytes(s).length; |
| } |
| |
| private static byte[] bytes(String s) { |
| return s.getBytes(Charsets.UTF_8); |
| } |
| |
| private static BinaryReferencesIndex loadIndex(ByteBuffer buffer) throws Exception { |
| ByteBuffer data = loadBinaryReferencesIndex((whence, length) -> { |
| ByteBuffer slice = buffer.duplicate(); |
| slice.position(slice.limit() - whence); |
| slice.limit(slice.position() + length); |
| return slice.slice(); |
| }); |
| return parseBinaryReferencesIndex(data); |
| } |
| |
| private static void assertInvalidBinaryReferencesIndexException(ByteBuffer buffer, String message) throws Exception { |
| try { |
| loadIndex(buffer); |
| } catch (InvalidBinaryReferencesIndexException e) { |
| assertEquals(message, e.getMessage()); |
| throw e; |
| } |
| } |
| |
| private static int checksum(ByteBuffer buffer) { |
| CRC32 checksum = new CRC32(); |
| int position = buffer.position(); |
| checksum.update(buffer); |
| buffer.position(position); |
| return (int) checksum.getValue(); |
| } |
| |
| @Test(expected = InvalidBinaryReferencesIndexException.class) |
| public void testInvalidMagicNumber() throws Exception { |
| ByteBuffer buffer = ByteBuffer.allocate(FOOTER_SIZE); |
| assertInvalidBinaryReferencesIndexException(buffer, "Invalid magic number"); |
| } |
| |
| @Test(expected = InvalidBinaryReferencesIndexException.class) |
| public void testInvalidCount() throws Exception { |
| ByteBuffer buffer = ByteBuffer.allocate(FOOTER_SIZE); |
| buffer.duplicate() |
| .putInt(0) |
| .putInt(-1) |
| .putInt(0) |
| .putInt(MAGIC); |
| assertInvalidBinaryReferencesIndexException(buffer, "Invalid count"); |
| } |
| |
| @Test(expected = InvalidBinaryReferencesIndexException.class) |
| public void testInvalidSize() throws Exception { |
| ByteBuffer buffer = ByteBuffer.allocate(FOOTER_SIZE); |
| buffer.duplicate() |
| .putInt(0) |
| .putInt(0) |
| .putInt(0) |
| .putInt(MAGIC); |
| assertInvalidBinaryReferencesIndexException(buffer, "Invalid size"); |
| } |
| |
| @Test(expected = InvalidBinaryReferencesIndexException.class) |
| public void testInvalidChecksum() throws Exception { |
| ByteBuffer entries = ByteBuffer.allocate(512) |
| // First generation |
| .putInt(1).putInt(2).put((byte) 0) |
| .putInt(2) |
| // First generation, first segment |
| .putLong(1).putLong(1) |
| .putInt(2) |
| .putInt(length("1.1.1")).put(bytes("1.1.1")) |
| .putInt(length("1.1.2")).put(bytes("1.1.2")) |
| // First generation, second segment |
| .putLong(1).putLong(2) |
| .putInt(2) |
| .putInt(length("1.2.1")).put(bytes("1.2.1")) |
| .putInt(length("1.2.2")).put(bytes("1.2.2")) |
| // Second generation |
| .putInt(3).putInt(4).put((byte) 1) |
| .putInt(2) |
| // Second generation, second segment |
| .putLong(1).putLong(1) |
| .putInt(2) |
| .putInt(length("2.1.1")).put(bytes("2.1.1")) |
| .putInt(length("2.1.2")).put(bytes("2.1.2")) |
| // Second generation, second segment |
| .putLong(1).putLong(2) |
| .putInt(2) |
| .putInt(length("2.2.1")).put(bytes("2.2.1")) |
| .putInt(length("2.2.2")).put(bytes("2.2.2")); |
| entries.flip(); |
| |
| ByteBuffer buffer = ByteBuffer.allocate(entries.remaining() + FOOTER_SIZE); |
| buffer.duplicate() |
| .put(entries.duplicate()) |
| .putInt(checksum(entries) + 1) |
| .putInt(2) |
| .putInt(entries.remaining() + FOOTER_SIZE) |
| .putInt(MAGIC); |
| |
| assertInvalidBinaryReferencesIndexException(buffer, "Invalid checksum"); |
| } |
| |
| @Test |
| public void testParse() throws Exception { |
| ByteBuffer entries = ByteBuffer.allocate(512) |
| // First generation |
| .putInt(1).putInt(2).put((byte) 0) |
| .putInt(2) |
| // First generation, first segment |
| .putLong(1).putLong(1) |
| .putInt(2) |
| .putInt(length("1.1.1")).put(bytes("1.1.1")) |
| .putInt(length("1.1.2")).put(bytes("1.1.2")) |
| // First generation, second segment |
| .putLong(1).putLong(2) |
| .putInt(2) |
| .putInt(length("1.2.1")).put(bytes("1.2.1")) |
| .putInt(length("1.2.2")).put(bytes("1.2.2")) |
| // Second generation |
| .putInt(3).putInt(4).put((byte) 1) |
| .putInt(2) |
| // Second generation, second segment |
| .putLong(1).putLong(1) |
| .putInt(2) |
| .putInt(length("2.1.1")).put(bytes("2.1.1")) |
| .putInt(length("2.1.2")).put(bytes("2.1.2")) |
| // Second generation, second segment |
| .putLong(1).putLong(2) |
| .putInt(2) |
| .putInt(length("2.2.1")).put(bytes("2.2.1")) |
| .putInt(length("2.2.2")).put(bytes("2.2.2")); |
| entries.flip(); |
| |
| ByteBuffer buffer = ByteBuffer.allocate(entries.remaining() + FOOTER_SIZE); |
| buffer.duplicate() |
| .put(entries.duplicate()) |
| .putInt(checksum(entries)) |
| .putInt(2) |
| .putInt(entries.remaining() + FOOTER_SIZE) |
| .putInt(MAGIC); |
| |
| assertNotNull(loadIndex(buffer)); |
| } |
| |
| } |