/** * @param mapping Mappings. * @param key Key to map. * @param topVer Topology version. * @return Near lock mapping. * @throws GridException If mapping for key failed. */ private GridNearLockMapping<K, V> map( K key, @Nullable GridNearLockMapping<K, V> mapping, long topVer) throws GridException { assert mapping == null || mapping.node() != null; GridNode primary = cctx.affinity().primary(key, topVer); if (cctx.discovery().node(primary.id()) == null) // If primary node left the grid before lock acquisition, fail the whole future. throw newTopologyException(null, primary.id()); if (inTx() && tx.groupLock() && !primary.isLocal()) throw new GridException( "Failed to start group lock transaction (local node is not primary for " + " key) [key=" + key + ", primaryNodeId=" + primary.id() + ']'); if (mapping == null || !primary.id().equals(mapping.node().id())) mapping = new GridNearLockMapping<>(primary, key); else mapping.addKey(key); return mapping; }