public boolean next() throws IOException {
   pointer++;
   if (pointer < docFreq) {
     in.seek(postingMaps[pointer].offset);
     freq = in.readVInt();
     position = 0;
     return true;
   }
   return false;
 }
Exemple #2
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 private void corruptFile(Directory dir, String fileIn, String fileOut) throws IOException {
   IndexInput input = dir.openInput(fileIn, IOContext.READONCE);
   IndexOutput output = dir.createOutput(fileOut, IOContext.DEFAULT);
   long len = input.length();
   byte[] b = new byte[1024];
   long broken = randomInt((int) len);
   long pos = 0;
   while (pos < len) {
     int min = (int) Math.min(input.length() - pos, b.length);
     input.readBytes(b, 0, min);
     if (broken >= pos && broken < pos + min) {
       // Flip one byte
       int flipPos = (int) (broken - pos);
       b[flipPos] = (byte) (b[flipPos] ^ 42);
     }
     output.writeBytes(b, min);
     pos += min;
   }
   IOUtils.close(input, output);
 }
Exemple #3
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 @Test
 public void testVerifyingIndexOutput() throws IOException {
   Directory dir = newDirectory();
   IndexOutput output = dir.createOutput("foo.bar", IOContext.DEFAULT);
   int iters = scaledRandomIntBetween(10, 100);
   for (int i = 0; i < iters; i++) {
     BytesRef bytesRef = new BytesRef(TestUtil.randomRealisticUnicodeString(random(), 10, 1024));
     output.writeBytes(bytesRef.bytes, bytesRef.offset, bytesRef.length);
   }
   CodecUtil.writeFooter(output);
   output.close();
   IndexInput indexInput = dir.openInput("foo.bar", IOContext.DEFAULT);
   String checksum = Store.digestToString(CodecUtil.retrieveChecksum(indexInput));
   indexInput.seek(0);
   BytesRef ref = new BytesRef(scaledRandomIntBetween(1, 1024));
   long length = indexInput.length();
   IndexOutput verifyingOutput =
       new Store.LuceneVerifyingIndexOutput(
           new StoreFileMetaData("foo1.bar", length, checksum),
           dir.createOutput("foo1.bar", IOContext.DEFAULT));
   while (length > 0) {
     if (random().nextInt(10) == 0) {
       verifyingOutput.writeByte(indexInput.readByte());
       length--;
     } else {
       int min = (int) Math.min(length, ref.bytes.length);
       indexInput.readBytes(ref.bytes, ref.offset, min);
       verifyingOutput.writeBytes(ref.bytes, ref.offset, min);
       length -= min;
     }
   }
   Store.verify(verifyingOutput);
   verifyingOutput.writeByte((byte) 0x0);
   try {
     Store.verify(verifyingOutput);
     fail("should be a corrupted index");
   } catch (CorruptIndexException | IndexFormatTooOldException | IndexFormatTooNewException ex) {
     // ok
   }
   IOUtils.close(indexInput, verifyingOutput, dir);
 }
Exemple #4
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  @Test
  public void testVerifyingIndexInput() throws IOException {
    Directory dir = newDirectory();
    IndexOutput output = dir.createOutput("foo.bar", IOContext.DEFAULT);
    int iters = scaledRandomIntBetween(10, 100);
    for (int i = 0; i < iters; i++) {
      BytesRef bytesRef = new BytesRef(TestUtil.randomRealisticUnicodeString(random(), 10, 1024));
      output.writeBytes(bytesRef.bytes, bytesRef.offset, bytesRef.length);
    }
    CodecUtil.writeFooter(output);
    output.close();

    // Check file
    IndexInput indexInput = dir.openInput("foo.bar", IOContext.DEFAULT);
    long checksum = CodecUtil.retrieveChecksum(indexInput);
    indexInput.seek(0);
    IndexInput verifyingIndexInput =
        new Store.VerifyingIndexInput(dir.openInput("foo.bar", IOContext.DEFAULT));
    readIndexInputFullyWithRandomSeeks(verifyingIndexInput);
    Store.verify(verifyingIndexInput);
    assertThat(checksum, equalTo(((ChecksumIndexInput) verifyingIndexInput).getChecksum()));
    IOUtils.close(indexInput, verifyingIndexInput);

    // Corrupt file and check again
    corruptFile(dir, "foo.bar", "foo1.bar");
    verifyingIndexInput =
        new Store.VerifyingIndexInput(dir.openInput("foo1.bar", IOContext.DEFAULT));
    readIndexInputFullyWithRandomSeeks(verifyingIndexInput);
    try {
      Store.verify(verifyingIndexInput);
      fail("should be a corrupted index");
    } catch (CorruptIndexException | IndexFormatTooOldException | IndexFormatTooNewException ex) {
      // ok
    }
    IOUtils.close(verifyingIndexInput);
    IOUtils.close(dir);
  }
Exemple #5
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 private void readIndexInputFullyWithRandomSeeks(IndexInput indexInput) throws IOException {
   BytesRef ref = new BytesRef(scaledRandomIntBetween(1, 1024));
   long pos = 0;
   while (pos < indexInput.length()) {
     assertEquals(pos, indexInput.getFilePointer());
     int op = random().nextInt(5);
     if (op == 0) {
       int shift = 100 - randomIntBetween(0, 200);
       pos = Math.min(indexInput.length() - 1, Math.max(0, pos + shift));
       indexInput.seek(pos);
     } else if (op == 1) {
       indexInput.readByte();
       pos++;
     } else {
       int min = (int) Math.min(indexInput.length() - pos, ref.bytes.length);
       indexInput.readBytes(ref.bytes, ref.offset, min);
       pos += min;
     }
   }
 }
Exemple #6
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  public void testCheckIntegrity() throws IOException {
    Directory dir = newDirectory();
    long luceneFileLength = 0;

    try (IndexOutput output = dir.createOutput("lucene_checksum.bin", IOContext.DEFAULT)) {
      int iters = scaledRandomIntBetween(10, 100);
      for (int i = 0; i < iters; i++) {
        BytesRef bytesRef = new BytesRef(TestUtil.randomRealisticUnicodeString(random(), 10, 1024));
        output.writeBytes(bytesRef.bytes, bytesRef.offset, bytesRef.length);
        luceneFileLength += bytesRef.length;
      }
      CodecUtil.writeFooter(output);
      luceneFileLength += CodecUtil.footerLength();
    }

    final Adler32 adler32 = new Adler32();
    long legacyFileLength = 0;
    try (IndexOutput output = dir.createOutput("legacy.bin", IOContext.DEFAULT)) {
      int iters = scaledRandomIntBetween(10, 100);
      for (int i = 0; i < iters; i++) {
        BytesRef bytesRef = new BytesRef(TestUtil.randomRealisticUnicodeString(random(), 10, 1024));
        output.writeBytes(bytesRef.bytes, bytesRef.offset, bytesRef.length);
        adler32.update(bytesRef.bytes, bytesRef.offset, bytesRef.length);
        legacyFileLength += bytesRef.length;
      }
    }
    final long luceneChecksum;
    final long adler32LegacyChecksum = adler32.getValue();
    try (IndexInput indexInput = dir.openInput("lucene_checksum.bin", IOContext.DEFAULT)) {
      assertEquals(luceneFileLength, indexInput.length());
      luceneChecksum = CodecUtil.retrieveChecksum(indexInput);
    }

    { // positive check
      StoreFileMetaData lucene =
          new StoreFileMetaData(
              "lucene_checksum.bin",
              luceneFileLength,
              Store.digestToString(luceneChecksum),
              Version.LUCENE_4_8_0);
      StoreFileMetaData legacy =
          new StoreFileMetaData(
              "legacy.bin", legacyFileLength, Store.digestToString(adler32LegacyChecksum));
      assertTrue(legacy.hasLegacyChecksum());
      assertFalse(lucene.hasLegacyChecksum());
      assertTrue(Store.checkIntegrityNoException(lucene, dir));
      assertTrue(Store.checkIntegrityNoException(legacy, dir));
    }

    { // negative check - wrong checksum
      StoreFileMetaData lucene =
          new StoreFileMetaData(
              "lucene_checksum.bin",
              luceneFileLength,
              Store.digestToString(luceneChecksum + 1),
              Version.LUCENE_4_8_0);
      StoreFileMetaData legacy =
          new StoreFileMetaData(
              "legacy.bin", legacyFileLength, Store.digestToString(adler32LegacyChecksum + 1));
      assertTrue(legacy.hasLegacyChecksum());
      assertFalse(lucene.hasLegacyChecksum());
      assertFalse(Store.checkIntegrityNoException(lucene, dir));
      assertFalse(Store.checkIntegrityNoException(legacy, dir));
    }

    { // negative check - wrong length
      StoreFileMetaData lucene =
          new StoreFileMetaData(
              "lucene_checksum.bin",
              luceneFileLength + 1,
              Store.digestToString(luceneChecksum),
              Version.LUCENE_4_8_0);
      StoreFileMetaData legacy =
          new StoreFileMetaData(
              "legacy.bin", legacyFileLength + 1, Store.digestToString(adler32LegacyChecksum));
      assertTrue(legacy.hasLegacyChecksum());
      assertFalse(lucene.hasLegacyChecksum());
      assertFalse(Store.checkIntegrityNoException(lucene, dir));
      assertFalse(Store.checkIntegrityNoException(legacy, dir));
    }

    { // negative check - wrong file
      StoreFileMetaData lucene =
          new StoreFileMetaData(
              "legacy.bin",
              luceneFileLength,
              Store.digestToString(luceneChecksum),
              Version.LUCENE_4_8_0);
      StoreFileMetaData legacy =
          new StoreFileMetaData(
              "lucene_checksum.bin", legacyFileLength, Store.digestToString(adler32LegacyChecksum));
      assertTrue(legacy.hasLegacyChecksum());
      assertFalse(lucene.hasLegacyChecksum());
      assertFalse(Store.checkIntegrityNoException(lucene, dir));
      assertFalse(Store.checkIntegrityNoException(legacy, dir));
    }
    dir.close();
  }
Exemple #7
0
  // IF THIS TEST FAILS ON UPGRADE GO LOOK AT THE
  // OldSIMockingCodec!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  @Test
  public void testWriteLegacyChecksums() throws IOException {
    final ShardId shardId = new ShardId(new Index("index"), 1);
    DirectoryService directoryService = new LuceneManagedDirectoryService(random());
    Store store =
        new Store(
            shardId,
            ImmutableSettings.EMPTY,
            directoryService,
            randomDistributor(directoryService),
            new DummyShardLock(shardId));
    // set default codec - all segments need checksums
    final boolean usesOldCodec = randomBoolean();
    IndexWriter writer =
        new IndexWriter(
            store.directory(),
            newIndexWriterConfig(random(), new MockAnalyzer(random()))
                .setCodec(usesOldCodec ? new OldSIMockingCodec() : actualDefaultCodec()));
    int docs = 1 + random().nextInt(100);

    for (int i = 0; i < docs; i++) {
      Document doc = new Document();
      doc.add(
          new TextField("id", "" + i, random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
      doc.add(
          new TextField(
              "body",
              TestUtil.randomRealisticUnicodeString(random()),
              random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
      doc.add(
          new SortedDocValuesField(
              "dv", new BytesRef(TestUtil.randomRealisticUnicodeString(random()))));
      writer.addDocument(doc);
    }
    if (random().nextBoolean()) {
      for (int i = 0; i < docs; i++) {
        if (random().nextBoolean()) {
          Document doc = new Document();
          doc.add(
              new TextField(
                  "id", "" + i, random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
          doc.add(
              new TextField(
                  "body",
                  TestUtil.randomRealisticUnicodeString(random()),
                  random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
          writer.updateDocument(new Term("id", "" + i), doc);
        }
      }
    }
    if (random().nextBoolean()) {
      DirectoryReader.open(writer, random().nextBoolean()).close(); // flush
    }
    Store.MetadataSnapshot metadata;
    // check before we committed
    try {
      store.getMetadata();
      fail("no index present - expected exception");
    } catch (IndexNotFoundException ex) {
      // expected
    }
    assertThat(store.getMetadataOrEmpty(), is(Store.MetadataSnapshot.EMPTY)); // nothing committed

    writer.close();
    Store.LegacyChecksums checksums = new Store.LegacyChecksums();
    Map<String, StoreFileMetaData> legacyMeta = new HashMap<>();
    for (String file : store.directory().listAll()) {
      if (file.equals("write.lock") || file.equals(IndexFileNames.OLD_SEGMENTS_GEN)) {
        continue;
      }
      BytesRef hash = new BytesRef();
      if (file.startsWith("segments")) {
        hash = Store.MetadataSnapshot.hashFile(store.directory(), file);
      }
      StoreFileMetaData storeFileMetaData =
          new StoreFileMetaData(
              file, store.directory().fileLength(file), file + "checksum", null, hash);
      legacyMeta.put(file, storeFileMetaData);
      checksums.add(storeFileMetaData);
    }
    checksums.write(store);

    metadata = store.getMetadata();
    Map<String, StoreFileMetaData> stringStoreFileMetaDataMap = metadata.asMap();
    assertThat(legacyMeta.size(), equalTo(stringStoreFileMetaDataMap.size()));
    if (usesOldCodec) {
      for (StoreFileMetaData meta : legacyMeta.values()) {
        assertTrue(meta.toString(), stringStoreFileMetaDataMap.containsKey(meta.name()));
        assertEquals(meta.name() + "checksum", meta.checksum());
        assertTrue(
            meta + " vs. " + stringStoreFileMetaDataMap.get(meta.name()),
            stringStoreFileMetaDataMap.get(meta.name()).isSame(meta));
      }
    } else {

      // even if we have a legacy checksum - if we use a new codec we should reuse
      for (StoreFileMetaData meta : legacyMeta.values()) {
        assertTrue(meta.toString(), stringStoreFileMetaDataMap.containsKey(meta.name()));
        assertFalse(
            meta + " vs. " + stringStoreFileMetaDataMap.get(meta.name()),
            stringStoreFileMetaDataMap.get(meta.name()).isSame(meta));
        StoreFileMetaData storeFileMetaData = metadata.get(meta.name());
        try (IndexInput input =
            store.openVerifyingInput(meta.name(), IOContext.DEFAULT, storeFileMetaData)) {
          assertTrue(storeFileMetaData.toString(), input instanceof Store.VerifyingIndexInput);
          input.seek(meta.length());
          Store.verify(input);
        }
      }
    }
    assertDeleteContent(store, directoryService);
    IOUtils.close(store);
  }
 public int nextPosition() throws IOException {
   int positionIncrement = in.readVInt();
   position += positionIncrement;
   return position;
 }