/**
* Locate the right sibling for this index partition.
*
* <p>Note: default key/val serializers are used.
*
* @return The locator for the right sibling -or- <code>null</code> if no right sibling could be
* found (which is an error).
* @todo This does not have to be a batch lookup any more. It could use the {@link
* ClientIndexView} class.
*/
private PartitionLocator getRightSiblingLocator(
final String scaleOutIndexName, final long lastCommitTime) {
final BatchLookup op =
BatchLookupConstructor.INSTANCE.newInstance(
0 /* fromIndex */,
1 /* toIndex */,
new byte[][] {vmd.pmd.getRightSeparatorKey()},
null /* vals */);
final ResultBuffer resultBuffer;
try {
resultBuffer =
(ResultBuffer)
resourceManager
.getFederation()
.getMetadataService()
.submit(
TimestampUtility.asHistoricalRead(lastCommitTime),
MetadataService.getMetadataIndexName(scaleOutIndexName),
op)
.get();
} catch (Exception e) {
log.error("Could not locate rightSiblings: index=" + scaleOutIndexName, e);
return null;
}
// the locator for the rightSibling.
return (PartitionLocator) SerializerUtil.deserialize(resultBuffer.getValues().get(0));
}
/**
* Utility to return a ByteBuffer containing the external version of the object.
*
* @return The {@link ByteBuffer}. The position will be zero. The limit will be the #of bytes in
* the serialized object.
*/
private ByteBuffer bufferObject(final Object obj) throws IOException {
// Note: pos=0; limit=capacity=length.
return ByteBuffer.wrap(SerializerUtil.serialize(obj));
}