| /* |
| * 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.platform.cache.affinity; |
| |
| import java.util.List; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.IgniteException; |
| import org.apache.ignite.cache.affinity.AffinityFunction; |
| import org.apache.ignite.cache.affinity.AffinityFunctionContext; |
| import org.apache.ignite.cluster.ClusterNode; |
| import org.apache.ignite.internal.binary.BinaryRawReaderEx; |
| import org.apache.ignite.internal.binary.BinaryRawWriterEx; |
| import org.apache.ignite.internal.processors.platform.PlatformAbstractTarget; |
| import org.apache.ignite.internal.processors.platform.PlatformContext; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| |
| /** |
| * Platform affinity function target: |
| * to be invoked when Platform function calls base implementation of one of the AffinityFunction methods. |
| */ |
| public class PlatformAffinityFunctionTarget extends PlatformAbstractTarget { |
| /** */ |
| private static final int OP_PARTITION = 1; |
| |
| /** */ |
| private static final int OP_REMOVE_NODE = 2; |
| |
| /** */ |
| private static final int OP_ASSIGN_PARTITIONS = 3; |
| |
| /** Inner function to delegate calls to. */ |
| private final AffinityFunction baseFunc; |
| |
| /** Thread local to hold the current affinity function context. */ |
| private static final ThreadLocal<AffinityFunctionContext> currentAffCtx = new ThreadLocal<>(); |
| |
| /** |
| * Constructor. |
| * |
| * @param platformCtx Context. |
| * @param baseFunc Function to wrap. |
| */ |
| protected PlatformAffinityFunctionTarget(PlatformContext platformCtx, AffinityFunction baseFunc) { |
| super(platformCtx); |
| |
| assert baseFunc != null; |
| this.baseFunc = baseFunc; |
| |
| try { |
| platformCtx.kernalContext().resource().injectGeneric(baseFunc); |
| } |
| catch (IgniteCheckedException e) { |
| throw U.convertException(e); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public long processInStreamOutLong(int type, BinaryRawReaderEx reader) throws IgniteCheckedException { |
| if (type == OP_PARTITION) |
| return baseFunc.partition(reader.readObjectDetached()); |
| else if (type == OP_REMOVE_NODE) { |
| baseFunc.removeNode(reader.readUuid()); |
| |
| return 0; |
| } |
| |
| return super.processInStreamOutLong(type, reader); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void processOutStream(int type, BinaryRawWriterEx writer) throws IgniteCheckedException { |
| if (type == OP_ASSIGN_PARTITIONS) { |
| AffinityFunctionContext affCtx = currentAffCtx.get(); |
| |
| if (affCtx == null) |
| throw new IgniteException("Thread-local AffinityFunctionContext is null. " + |
| "This may indicate an unsupported call to the base AffinityFunction."); |
| |
| final List<List<ClusterNode>> partitions = baseFunc.assignPartitions(affCtx); |
| |
| PlatformAffinityUtils.writePartitionAssignment(partitions, writer, platformContext()); |
| |
| return; |
| } |
| |
| super.processOutStream(type, writer); |
| } |
| |
| /** |
| * Sets the context for current operation. |
| * |
| * @param ctx Context. |
| */ |
| void setCurrentAffinityFunctionContext(AffinityFunctionContext ctx) { |
| currentAffCtx.set(ctx); |
| } |
| } |