예제 #1
0
 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);
 }
예제 #2
0
 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;
     }
   }
 }
예제 #3
0
 @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);
 }
예제 #4
0
  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();
  }