@Override
public GetResponse get(RpcController controller, GetRequest request) throws ServiceException {
boolean metaRegion =
isMetaRegion(request.getRegion().getValue().toByteArray(), request.getRegion().getType());
if (!metaRegion) {
return doGetResponse(request);
}
return doMetaGetResponse(meta, request);
}
private GetResponse doGetResponse(GetRequest request) {
ClientProtos.Result.Builder resultBuilder = ClientProtos.Result.newBuilder();
ByteString row = request.getGet().getRow();
resultBuilder.addCell(getStartCode(row));
GetResponse.Builder builder = GetResponse.newBuilder();
builder.setResult(resultBuilder.build());
return builder.build();
}
static GetResponse doMetaGetResponse(
final SortedMap<byte[], Pair<HRegionInfo, ServerName>> meta, final GetRequest request) {
ClientProtos.Result.Builder resultBuilder = ClientProtos.Result.newBuilder();
ByteString row = request.getGet().getRow();
Pair<HRegionInfo, ServerName> p = meta.get(row.toByteArray());
if (p == null) {
if (request.getGet().getClosestRowBefore()) {
byte[] bytes = row.toByteArray();
SortedMap<byte[], Pair<HRegionInfo, ServerName>> head =
bytes != null ? meta.headMap(bytes) : meta;
p = head == null ? null : head.get(head.lastKey());
}
}
if (p != null) {
resultBuilder.addCell(getRegionInfo(row, p.getFirst()));
resultBuilder.addCell(getServer(row, p.getSecond()));
}
resultBuilder.addCell(getStartCode(row));
GetResponse.Builder builder = GetResponse.newBuilder();
builder.setResult(resultBuilder.build());
return builder.build();
}