/**
* get meta, that is correct target of timestamp if present
*
* @param timestamp
*/
private ChunkMeta getChunkMeta(BTreeMap<Integer, ChunkMeta> chunkMetaMap, int timestamp) {
int timestamp_year = TimeUtil.roundLowerYear(timestamp);
int timestamp_next_year = TimeUtil.roundNextYear(timestamp);
Integer key = chunkMetaMap.ceilingKey(timestamp_year);
if (key == null) {
return null;
}
if (timestamp_next_year <= key) {
return null;
}
ChunkMeta chunkMeta = chunkMetaMap.get(key);
throwNull(chunkMeta);
return chunkMeta;
}
