| /* |
| * 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.geode.internal.admin.remote; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.apache.geode.DataSerializer; |
| import org.apache.geode.GemFireCacheException; |
| import org.apache.geode.annotations.internal.MakeNotStatic; |
| import org.apache.geode.cache.CacheException; |
| import org.apache.geode.cache.CacheStatistics; |
| import org.apache.geode.cache.Region; |
| import org.apache.geode.cache.StatisticsDisabledException; |
| import org.apache.geode.distributed.internal.DistributionManager; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.internal.serialization.DeserializationContext; |
| import org.apache.geode.internal.serialization.SerializationContext; |
| |
| /** |
| * Responds to {@link ObjectDetailsRequest}. |
| */ |
| public class ObjectDetailsResponse extends AdminResponse implements Cancellable { |
| // instance variables |
| private Object objectValue; |
| private Object userAttribute; |
| private RemoteCacheStatistics stats; |
| private transient boolean cancelled; |
| |
| /** |
| * Returns a <code>ObjectValueResponse</code> that will be returned to the specified recipient. |
| * The message will contains a copy of the local manager's system config. |
| */ |
| public static ObjectDetailsResponse create(DistributionManager dm, |
| InternalDistributedMember recipient) { |
| ObjectDetailsResponse m = new ObjectDetailsResponse(); |
| m.setRecipient(recipient); |
| return m; |
| } |
| |
| void buildDetails(Region r, Object objName, int inspectionType) { |
| try { |
| objName = getObjectName(r, objName); |
| if (cancelled) |
| return; |
| if (r.containsKey(objName)) { |
| if (cancelled) |
| return; |
| // @todo darrel: race condition; could be unloaded between isPresent and get call. |
| Region.Entry e = r.getEntry(objName); |
| Object v = e.getValue(); |
| if (cancelled) |
| return; |
| objectValue = CacheDisplay.getCachedObjectDisplay(v, inspectionType); |
| if (cancelled) |
| return; |
| userAttribute = CacheDisplay.getCachedObjectDisplay(e.getUserAttribute(), inspectionType); |
| if (cancelled) |
| return; |
| try { |
| stats = new RemoteCacheStatistics(e.getStatistics()); |
| } catch (StatisticsDisabledException ignore) { |
| } |
| } |
| } catch (CacheException ex) { |
| throw new GemFireCacheException(ex); |
| } |
| } |
| |
| @Override |
| public synchronized void cancel() { |
| cancelled = true; |
| } |
| |
| // instance methods |
| public Object getObjectValue() { |
| return this.objectValue; |
| } |
| |
| public Object getUserAttribute() { |
| return this.userAttribute; |
| } |
| |
| public CacheStatistics getStatistics() { |
| return this.stats; |
| } |
| |
| @Override |
| public int getDSFID() { |
| return OBJECT_DETAILS_RESPONSE; |
| } |
| |
| @Override |
| public void toData(DataOutput out, |
| SerializationContext context) throws IOException { |
| super.toData(out, context); |
| DataSerializer.writeObject(this.objectValue, out); |
| DataSerializer.writeObject(this.userAttribute, out); |
| DataSerializer.writeObject(this.stats, out); |
| } |
| |
| @Override |
| public void fromData(DataInput in, |
| DeserializationContext context) throws IOException, ClassNotFoundException { |
| super.fromData(in, context); |
| this.objectValue = DataSerializer.readObject(in); |
| this.userAttribute = DataSerializer.readObject(in); |
| this.stats = (RemoteCacheStatistics) DataSerializer.readObject(in); |
| } |
| |
| @Override |
| public String toString() { |
| return "ObjectDetailsResponse from " + this.getRecipient(); |
| } |
| |
| |
| // Holds the last result of getObjectName to optimize the next call |
| @MakeNotStatic |
| private static Object lastObjectNameFound = null; |
| |
| static Object getObjectName(Region r, Object objName) throws CacheException { |
| if (objName instanceof RemoteObjectName) { |
| synchronized (ObjectDetailsResponse.class) { |
| if (objName.equals(lastObjectNameFound)) { |
| return lastObjectNameFound; |
| } |
| } |
| Object obj = null; |
| Set keys = r.keySet(); |
| synchronized (r) { |
| Iterator it = keys.iterator(); |
| while (it.hasNext()) { |
| Object o = it.next(); |
| if (objName.equals(o)) { |
| synchronized (ObjectDetailsResponse.class) { |
| lastObjectNameFound = o; |
| } |
| obj = o; |
| break; |
| } |
| } |
| } |
| if (obj != null) { |
| return obj; |
| } |
| // Didn't find it so just return the input RemoteObjectName instance. |
| // This should fail on the lookup and give a reasonable error. |
| synchronized (ObjectDetailsResponse.class) { |
| lastObjectNameFound = objName; |
| } |
| } |
| return objName; |
| } |
| } |