| /* |
| * 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.datastructures; |
| |
| import java.io.Externalizable; |
| import org.apache.ignite.IgniteCacheRestartingException; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.IgniteLogger; |
| import org.apache.ignite.internal.GridKernalContext; |
| import org.apache.ignite.internal.processors.cache.GridCacheContext; |
| import org.apache.ignite.internal.processors.cache.IgniteInternalCache; |
| import org.apache.ignite.internal.processors.cluster.IgniteChangeGlobalStateSupport; |
| import org.apache.ignite.internal.util.future.GridFutureAdapter; |
| import org.apache.ignite.internal.util.future.IgniteFutureImpl; |
| import org.apache.ignite.internal.util.typedef.internal.U; |
| |
| public abstract class AtomicDataStructureProxy<V extends AtomicDataStructureValue> |
| implements GridCacheRemovable,IgniteChangeGlobalStateSupport { |
| /** Logger. */ |
| protected IgniteLogger log; |
| |
| /** Removed flag. */ |
| protected volatile boolean rmvd; |
| |
| /** Suspended future. */ |
| private volatile GridFutureAdapter<Void> suspendFut; |
| |
| /** Check removed flag. */ |
| private boolean rmvCheck; |
| |
| /** Structure name. */ |
| protected String name; |
| |
| /** Structure key. */ |
| protected GridCacheInternalKey key; |
| |
| /** Structure projection. */ |
| protected IgniteInternalCache<GridCacheInternalKey, V> cacheView; |
| |
| /** Cache context. */ |
| protected volatile GridCacheContext<GridCacheInternalKey, V> ctx; |
| |
| /** |
| * Empty constructor required by {@link Externalizable}. |
| */ |
| public AtomicDataStructureProxy() { |
| // No-op. |
| } |
| |
| /** |
| * Default constructor. |
| * |
| * @param name Structure name. |
| * @param key Structure key. |
| * @param cacheView Cache projection. |
| */ |
| public AtomicDataStructureProxy(String name, |
| GridCacheInternalKey key, |
| IgniteInternalCache<GridCacheInternalKey, V> cacheView) |
| { |
| assert key != null; |
| assert cacheView != null; |
| |
| this.ctx = cacheView.context(); |
| this.key = key; |
| this.cacheView = cacheView; |
| this.name = name; |
| |
| log = ctx.logger(getClass()); |
| } |
| |
| /** |
| * @return Datastructure name. |
| */ |
| public String name() { |
| return name; |
| } |
| |
| /** |
| * @return Key value. |
| */ |
| public GridCacheInternalKey key() { |
| return key; |
| } |
| |
| /** |
| * @return Removed flag. |
| */ |
| public boolean removed() { |
| return rmvd; |
| } |
| |
| /** |
| * Check removed status. |
| * |
| * @throws IllegalStateException If removed. |
| */ |
| protected void checkRemoved() throws IllegalStateException { |
| if (rmvd) |
| throw removedError(); |
| |
| GridFutureAdapter<Void> suspendFut0 = suspendFut; |
| |
| if (suspendFut0 != null && !suspendFut0.isDone()) |
| throw suspendedError(); |
| |
| if (rmvCheck) { |
| try { |
| rmvd = cacheView.get(key) == null; |
| } |
| catch (IgniteCheckedException e) { |
| throw U.convertException(e); |
| } |
| |
| rmvCheck = false; |
| |
| if (rmvd) { |
| ctx.kernalContext().dataStructures().onRemoved(key, this); |
| |
| throw removedError(); |
| } |
| } |
| } |
| |
| /** |
| * @return Error. |
| */ |
| private IllegalStateException removedError() { |
| return new IllegalStateException("Sequence was removed from cache: " + name); |
| } |
| |
| /** |
| * @return Error. |
| */ |
| private IllegalStateException suspendedError() { |
| throw new IgniteCacheRestartingException(new IgniteFutureImpl<>(suspendFut), "Underlying cache is restarting: " + ctx.name()); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean onRemoved() { |
| return rmvd = true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void needCheckNotRemoved() { |
| rmvCheck = true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void suspend() { |
| suspendFut = new GridFutureAdapter<>(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void restart(IgniteInternalCache cache) { |
| invalidateLocalState(); |
| |
| cacheView = cache; |
| ctx = cache.context(); |
| rmvCheck = true; |
| suspendFut.onDone(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onActivate(GridKernalContext kctx) throws IgniteCheckedException { |
| this.ctx = kctx.cache().<GridCacheInternalKey, V>context().cacheContext(ctx.cacheId()); |
| this.cacheView = ctx.cache(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onDeActivate(GridKernalContext kctx) { |
| // No-op. |
| } |
| |
| protected void invalidateLocalState() { |
| // No-op |
| } |
| |
| } |