| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.ignite.internal.processors.affinity; |
| |
| import java.util.List; |
| import org.apache.ignite.cache.affinity.AffinityFunctionContext; |
| import org.apache.ignite.cluster.ClusterNode; |
| import org.apache.ignite.events.DiscoveryEvent; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Cache affinity function context implementation. Simple bean that holds all required fields. |
| */ |
| public class GridAffinityFunctionContextImpl implements AffinityFunctionContext { |
| /** Topology snapshot. */ |
| private final List<ClusterNode> topSnapshot; |
| |
| /** Previous affinity assignment. */ |
| private final List<List<ClusterNode>> prevAssignment; |
| |
| /** Discovery event that caused this topology change. */ |
| private final DiscoveryEvent discoEvt; |
| |
| /** Topology version. */ |
| private final AffinityTopologyVersion topVer; |
| |
| /** Number of backups to assign. */ |
| private final int backups; |
| |
| /** |
| * @param topSnapshot Topology snapshot. |
| * @param topVer Topology version. |
| */ |
| public GridAffinityFunctionContextImpl(List<ClusterNode> topSnapshot, List<List<ClusterNode>> prevAssignment, |
| DiscoveryEvent discoEvt, @NotNull AffinityTopologyVersion topVer, int backups) { |
| this.topSnapshot = topSnapshot; |
| this.prevAssignment = prevAssignment; |
| this.discoEvt = discoEvt; |
| this.topVer = topVer; |
| this.backups = backups; |
| } |
| |
| /** {@inheritDoc} */ |
| @Nullable @Override public List<ClusterNode> previousAssignment(int part) { |
| return prevAssignment == null ? null : prevAssignment.get(part); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public List<ClusterNode> currentTopologySnapshot() { |
| return topSnapshot; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public AffinityTopologyVersion currentTopologyVersion() { |
| return topVer; |
| } |
| |
| /** {@inheritDoc} */ |
| @Nullable @Override public DiscoveryEvent discoveryEvent() { |
| return discoEvt; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int backups() { |
| return backups; |
| } |
| |
| /** |
| * Gets the previous assignment. |
| * |
| * @return Previous assignment |
| */ |
| public List<List<ClusterNode>> prevAssignment() { |
| return prevAssignment; |
| } |
| } |