static Map<String, String> readChecksums(Directory[] dirs, Map<String, String> defaultValue)
throws IOException {
long lastFound = -1;
Directory lastDir = null;
for (Directory dir : dirs) {
for (String name : dir.listAll()) {
if (!isChecksum(name)) {
continue;
}
long current = Long.parseLong(name.substring(CHECKSUMS_PREFIX.length()));
if (current > lastFound) {
lastFound = current;
lastDir = dir;
}
}
}
if (lastFound == -1) {
return defaultValue;
}
IndexInput indexInput = lastDir.openInput(CHECKSUMS_PREFIX + lastFound, IOContext.READONCE);
try {
indexInput.readInt(); // version
return indexInput.readStringStringMap();
} catch (Exception e) {
// failed to load checksums, ignore and return an empty map
return defaultValue;
} finally {
indexInput.close();
}
}
// LUCENE-1196
public void testIllegalEOF() throws Exception {
RAMDirectory dir = new RAMDirectory();
IndexOutput o = dir.createOutput("out");
byte[] b = new byte[1024];
o.writeBytes(b, 0, 1024);
o.close();
IndexInput i = dir.openInput("out");
i.seek(1024);
i.close();
dir.close();
}
private void verifyData(ByteBufferDirectory dir) throws IOException {
byte[] test = new byte[] {1, 2, 3, 4, 5, 6, 7, 8};
assertThat(dir.fileExists("value1"), equalTo(true));
assertThat(dir.fileLength("value1"), equalTo(38l));
IndexInput indexInput = dir.openInput("value1", IOContext.DEFAULT);
indexInput.readBytes(test, 0, 5);
assertThat(test[0], equalTo((byte) 8));
assertThat(indexInput.readInt(), equalTo(-1));
assertThat(indexInput.readLong(), equalTo((long) 10));
assertThat(indexInput.readInt(), equalTo(0));
assertThat(indexInput.readInt(), equalTo(0));
indexInput.readBytes(test, 0, 8);
assertThat(test[0], equalTo((byte) 1));
assertThat(test[7], equalTo((byte) 8));
indexInput.readBytes(test, 0, 5);
assertThat(test[0], equalTo((byte) 1));
assertThat(test[4], equalTo((byte) 5));
indexInput.seek(28);
assertThat(indexInput.readByte(), equalTo((byte) 4));
indexInput.seek(30);
assertThat(indexInput.readByte(), equalTo((byte) 6));
indexInput.seek(0);
indexInput.readBytes(test, 0, 5);
assertThat(test[0], equalTo((byte) 8));
indexInput.close();
indexInput = dir.openInput("value1", IOContext.DEFAULT);
// iterate over all the data
for (int i = 0; i < 38; i++) {
indexInput.readByte();
}
indexInput.close();
}
// LUCENE-2852
public void testSeekToEOFThenBack() throws Exception {
RAMDirectory dir = new RAMDirectory();
IndexOutput o = dir.createOutput("out");
byte[] bytes = new byte[3 * RAMInputStream.BUFFER_SIZE];
o.writeBytes(bytes, 0, bytes.length);
o.close();
IndexInput i = dir.openInput("out");
i.seek(2 * RAMInputStream.BUFFER_SIZE - 1);
i.seek(3 * RAMInputStream.BUFFER_SIZE);
i.seek(RAMInputStream.BUFFER_SIZE);
i.readBytes(bytes, 0, 2 * RAMInputStream.BUFFER_SIZE);
i.close();
dir.close();
}
@Override
public void close() throws IOException {
main.close();
}
