public Entry<InternalKey, Slice> next(int bucket, long minSeq) {
if (hasNext()) {
// parse the key in the block
Entry<InternalKey, Slice> entry = iterator.next();
InternalKey internalKey = entry.getKey();
Preconditions.checkState(
internalKey != null, "Corrupt key for %s", internalKey.getUserKey().toString(UTF_8));
if (internalKey.bucket() == bucket && internalKey.getSequenceNumber() > minSeq) {
return entry;
}
}
return null;
}
private int readWriteBatch(int bucket, SliceInput record, int updateSize, Entrys entries)
throws IOException {
List<Entry<Slice, Slice>> list = Lists.newArrayListWithCapacity(updateSize);
int count = 0;
while (record.isReadable()) {
count++;
ValueType valueType = ValueType.getValueTypeByPersistentId(record.readByte());
if (valueType == VALUE) {
Slice key = readLengthPrefixedBytes(record);
Slice value = readLengthPrefixedBytes(record);
list.add(new BlockEntry(key, value));
} else if (valueType == DELETION) {
Slice key = readLengthPrefixedBytes(record);
list.add(new BlockEntry(key, Slices.EMPTY_SLICE));
} else {
throw new IllegalStateException("Unexpected value type " + valueType);
}
}
if (count != updateSize) {
throw new IOException(
String.format(
"Expected %d entries in log record but found %s entries", updateSize, entries));
}
int available = 0;
for (Entry<Slice, Slice> e : list) {
InternalKey iKey =
new InternalKey(e.getKey(), 0, e.getValue().length() != 0 ? VALUE : DELETION);
if (bucket == iKey.bucket()) {
entries.add(e);
available++;
}
}
return available;
}
