| /* |
| * 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.marshaller; |
| |
| import java.util.LinkedList; |
| import java.util.Map; |
| import java.util.Queue; |
| import java.util.UUID; |
| import java.util.concurrent.atomic.AtomicReference; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.IgniteLogger; |
| import org.apache.ignite.cluster.ClusterNode; |
| import org.apache.ignite.internal.GridKernalContext; |
| import org.apache.ignite.internal.GridTopic; |
| import org.apache.ignite.internal.managers.communication.GridIoManager; |
| import org.apache.ignite.internal.managers.communication.GridIoPolicy; |
| import org.apache.ignite.internal.managers.discovery.GridDiscoveryManager; |
| import org.apache.ignite.internal.util.future.GridFutureAdapter; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Future responsible for requesting missing marshaller mapping from one of available server nodes. |
| * |
| * Handles scenarios when server nodes leave cluster. If node that was requested for mapping leaves the cluster or fails, |
| * mapping is automatically requested from the next node available in topology. |
| */ |
| final class ClientRequestFuture extends GridFutureAdapter<MappingExchangeResult> { |
| /** */ |
| private static final AtomicReference<IgniteLogger> logRef = new AtomicReference<>(); |
| |
| /** */ |
| private static IgniteLogger log; |
| |
| /** */ |
| private final GridIoManager ioMgr; |
| |
| /** */ |
| private final GridDiscoveryManager discoMgr; |
| |
| /** */ |
| private final MarshallerMappingItem item; |
| |
| /** */ |
| private final Map<MarshallerMappingItem, ClientRequestFuture> syncMap; |
| |
| /** */ |
| private final Queue<ClusterNode> aliveSrvNodes; |
| |
| /** */ |
| private ClusterNode pendingNode; |
| |
| /** |
| * @param ctx Context. |
| * @param item Item. |
| * @param syncMap Sync map. |
| */ |
| ClientRequestFuture( |
| GridKernalContext ctx, |
| MarshallerMappingItem item, |
| Map<MarshallerMappingItem, ClientRequestFuture> syncMap |
| ) { |
| ioMgr = ctx.io(); |
| discoMgr = ctx.discovery(); |
| aliveSrvNodes = new LinkedList<>(discoMgr.aliveServerNodes()); |
| this.item = item; |
| this.syncMap = syncMap; |
| |
| if (log == null) |
| log = U.logger(ctx, logRef, ClientRequestFuture.class); |
| } |
| |
| /** |
| * |
| */ |
| void requestMapping() { |
| boolean noSrvsInCluster; |
| |
| synchronized (this) { |
| while (!aliveSrvNodes.isEmpty()) { |
| ClusterNode srvNode = aliveSrvNodes.poll(); |
| |
| try { |
| ioMgr.sendToGridTopic( |
| srvNode, |
| GridTopic.TOPIC_MAPPING_MARSH, |
| new MissingMappingRequestMessage( |
| item.platformId(), |
| item.typeId()), |
| GridIoPolicy.SYSTEM_POOL); |
| |
| if (discoMgr.node(srvNode.id()) == null) |
| continue; |
| |
| pendingNode = srvNode; |
| |
| break; |
| } |
| catch (IgniteCheckedException ignored) { |
| U.warn(log, |
| "Failed to request marshaller mapping from remote node (proceeding with the next one): " |
| + srvNode); |
| } |
| } |
| |
| noSrvsInCluster = pendingNode == null; |
| } |
| |
| if (noSrvsInCluster) |
| onDone(MappingExchangeResult.createFailureResult( |
| new IgniteCheckedException( |
| "All server nodes have left grid, cannot request mapping [platformId: " |
| + item.platformId() |
| + "; typeId: " |
| + item.typeId() + "]"))); |
| } |
| |
| /** |
| * @param nodeId Node ID. |
| * @param res Mapping Request Result. |
| */ |
| void onResponse(UUID nodeId, MappingExchangeResult res) { |
| MappingExchangeResult res0 = null; |
| |
| synchronized (this) { |
| if (pendingNode != null && pendingNode.id().equals(nodeId)) |
| res0 = res; |
| } |
| |
| if (res0 != null) |
| onDone(res0); |
| } |
| |
| /** |
| * If left node is actually the one latest mapping request was sent to, |
| * request is sent again to the next node in topology. |
| * |
| * @param leftNodeId Left node id. |
| */ |
| void onNodeLeft(UUID leftNodeId) { |
| boolean reqAgain = false; |
| |
| synchronized (this) { |
| if (pendingNode != null && pendingNode.id().equals(leftNodeId)) { |
| aliveSrvNodes.remove(pendingNode); |
| |
| pendingNode = null; |
| |
| reqAgain = true; |
| } |
| } |
| |
| if (reqAgain) |
| requestMapping(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean onDone(@Nullable MappingExchangeResult res, @Nullable Throwable err) { |
| assert res != null; |
| |
| boolean done = super.onDone(res, err); |
| |
| if (done) |
| syncMap.remove(item); |
| |
| return done; |
| } |
| } |