| /* |
| * 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.cache.partitioned; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.SystemFailure; |
| import org.apache.geode.annotations.internal.MakeNotStatic; |
| import org.apache.geode.distributed.internal.ClusterDistributionManager; |
| import org.apache.geode.distributed.internal.DistributionManager; |
| import org.apache.geode.distributed.internal.DistributionMessage; |
| import org.apache.geode.distributed.internal.DistributionStats; |
| import org.apache.geode.distributed.internal.HighPriorityDistributionMessage; |
| import org.apache.geode.distributed.internal.InternalDistributedSystem; |
| import org.apache.geode.distributed.internal.MessageWithReply; |
| import org.apache.geode.distributed.internal.OperationExecutors; |
| import org.apache.geode.distributed.internal.ReplyException; |
| import org.apache.geode.distributed.internal.ReplyProcessor21; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.internal.Assert; |
| import org.apache.geode.internal.logging.log4j.LogMarker; |
| import org.apache.geode.internal.serialization.DeserializationContext; |
| import org.apache.geode.internal.serialization.SerializationContext; |
| import org.apache.geode.logging.internal.log4j.api.LogService; |
| |
| /** |
| * A message sent to determine the most recent PartitionedRegion identity |
| * |
| * @since GemFire 5.0 |
| */ |
| public class IdentityRequestMessage extends DistributionMessage implements MessageWithReply { |
| private static final Logger logger = LogService.getLogger(); |
| |
| private static final int UNINITIALIZED = -1; |
| |
| /** |
| * This is the keeper of the latest PartitionedRegion Identity on a per VM basis |
| */ |
| @MakeNotStatic |
| private static int latestId = UNINITIALIZED; |
| |
| public static synchronized void setLatestId(int newlatest) { |
| if (newlatest > latestId) { |
| latestId = newlatest; |
| } |
| } |
| |
| /** |
| * Method public for test reasons |
| * |
| * @return the latest identity |
| */ |
| public static synchronized int getLatestId() { |
| return latestId; |
| } |
| |
| private int processorId; |
| |
| /** |
| * Empty constructor to conform to DataSerializer interface |
| * |
| */ |
| public IdentityRequestMessage() {} |
| |
| public IdentityRequestMessage(Set recipients, int processorId) { |
| setRecipients(recipients); |
| this.processorId = processorId; |
| } |
| |
| @Override |
| protected void process(ClusterDistributionManager dm) { |
| try { |
| if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) { |
| logger.trace(LogMarker.DM_VERBOSE, "{}: processing message {}", getClass().getName(), this); |
| } |
| |
| IdentityReplyMessage.send(getSender(), getProcessorId(), dm); |
| } catch (VirtualMachineError err) { |
| SystemFailure.initiateFailure(err); |
| // If this ever returns, rethrow the error. We're poisoned |
| // now, so don't let this thread continue. |
| throw err; |
| } catch (Throwable t) { |
| // Whenever you catch Error or Throwable, you must also |
| // catch VirtualMachineError (see above). However, there is |
| // _still_ a possibility that you are dealing with a cascading |
| // error condition, so you also need to check to see if the JVM |
| // is still usable: |
| SystemFailure.checkFailure(); |
| logger.debug("{} Caught throwable {}", this, t.getMessage(), t); |
| } |
| } |
| |
| @Override |
| public int getProcessorId() { |
| return this.processorId; |
| } |
| |
| |
| @Override |
| public int getProcessorType() { |
| return OperationExecutors.HIGH_PRIORITY_EXECUTOR; |
| } |
| |
| /** |
| * Sends a <code>IdentityRequest</code> to each <code>PartitionedRegion</code> |
| * {@link org.apache.geode.internal.cache.Node}. The <code>IdentityResponse</code> is used to |
| * fetch the highest current identity value. |
| * |
| * @return the response object to wait upon |
| */ |
| public static IdentityResponse send(Set recipients, InternalDistributedSystem is) { |
| Assert.assertTrue(recipients != null, "IdentityMessage NULL recipients set"); |
| int i = 0; |
| for (Iterator ri = recipients.iterator(); ri.hasNext(); i++) { |
| Assert.assertTrue(null != ri.next(), "IdenityMessage recipient " + i + " is null"); |
| } |
| |
| IdentityResponse p = new IdentityResponse(is, recipients); |
| IdentityRequestMessage m = new IdentityRequestMessage(recipients, p.getProcessorId()); |
| is.getDistributionManager().putOutgoing(m); |
| return p; |
| } |
| |
| |
| @Override |
| public int getDSFID() { |
| return PR_IDENTITY_REQUEST_MESSAGE; |
| } |
| |
| @Override |
| public void fromData(DataInput in, |
| DeserializationContext context) throws IOException, ClassNotFoundException { |
| super.fromData(in, context); |
| this.processorId = in.readInt(); |
| } |
| |
| @Override |
| public void toData(DataOutput out, |
| SerializationContext context) throws IOException { |
| super.toData(out, context); |
| out.writeInt(this.processorId); |
| } |
| |
| @Override |
| public String toString() { |
| return new StringBuffer().append(getClass().getName()).append("(sender=").append(getSender()) |
| .append("; processorId=").append(this.processorId).append(")").toString(); |
| } |
| |
| |
| /** |
| * The message that contains the <code>Integer</code> identity response to the |
| * {@link IdentityRequestMessage} |
| * |
| * @since GemFire 5.0 |
| */ |
| public static class IdentityReplyMessage extends HighPriorityDistributionMessage { |
| private int Id = UNINITIALIZED; |
| |
| /** The shared obj id of the ReplyProcessor */ |
| private int processorId; |
| |
| /** |
| * Empty constructor to conform to DataSerializable interface |
| */ |
| public IdentityReplyMessage() {} |
| |
| private IdentityReplyMessage(int processorId) { |
| this.processorId = processorId; |
| this.Id = IdentityRequestMessage.getLatestId(); |
| } |
| |
| public static void send(InternalDistributedMember recipient, int processorId, |
| DistributionManager dm) { |
| Assert.assertTrue(recipient != null, "IdentityReplyMessage NULL reply message"); |
| IdentityReplyMessage m = new IdentityReplyMessage(processorId); |
| m.setRecipient(recipient); |
| dm.putOutgoing(m); |
| } |
| |
| @Override |
| protected void process(final ClusterDistributionManager dm) { |
| final long startTime = getTimestamp(); |
| if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) { |
| logger.trace(LogMarker.DM_VERBOSE, |
| "{} process invoking reply processor with processorId:{}", getClass().getName(), |
| this.processorId); |
| } |
| |
| ReplyProcessor21 processor = ReplyProcessor21.getProcessor(this.processorId); |
| |
| if (processor == null) { |
| if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) { |
| logger.trace(LogMarker.DM_VERBOSE, "Processor not found: {}", getClass().getName()); |
| } |
| return; |
| } |
| processor.process(this); |
| |
| if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) { |
| logger.trace(LogMarker.DM_VERBOSE, "{} Processed {}", processor, this); |
| } |
| dm.getStats().incReplyMessageTime(DistributionStats.getStatTime() - startTime); |
| } |
| |
| @Override |
| public void toData(DataOutput out, |
| SerializationContext context) throws IOException { |
| super.toData(out, context); |
| out.writeInt(this.processorId); |
| out.writeInt(this.Id); |
| } |
| |
| @Override |
| public int getDSFID() { |
| return PR_IDENTITY_REPLY_MESSAGE; |
| } |
| |
| @Override |
| public void fromData(DataInput in, |
| DeserializationContext context) throws IOException, ClassNotFoundException { |
| super.fromData(in, context); |
| this.processorId = in.readInt(); |
| this.Id = in.readInt(); |
| } |
| |
| @Override |
| public String toString() { |
| return new StringBuffer().append(getClass().getName()).append("(sender=").append(getSender()) |
| .append("; processorId=").append(this.processorId).append("; PRId=").append(getId()) |
| .append(")").toString(); |
| } |
| |
| /** |
| * Fetch the current Identity number |
| * |
| * @return the identity Integer from the sender or null if the sender did not have the Integer |
| * initialized |
| */ |
| public Integer getId() { |
| if (this.Id == UNINITIALIZED) { |
| return null; |
| } |
| return Integer.valueOf(this.Id); |
| } |
| } |
| |
| /** |
| * The response to a {@link IdentityRequestMessage} use {@link #waitForId()} to capture the |
| * identity |
| * |
| * @since GemFire 5.0 |
| */ |
| public static class IdentityResponse extends ReplyProcessor21 { |
| private Integer returnValue; |
| |
| public IdentityResponse(InternalDistributedSystem system, Set initMembers) { |
| super(system, initMembers); |
| int localIdent = IdentityRequestMessage.getLatestId(); |
| if (localIdent != UNINITIALIZED) { |
| this.returnValue = Integer.valueOf(localIdent); |
| } |
| } |
| |
| @Override |
| public void process(DistributionMessage msg) { |
| try { |
| if (msg instanceof IdentityReplyMessage) { |
| IdentityReplyMessage reply = (IdentityReplyMessage) msg; |
| final Integer remoteId = reply.getId(); |
| synchronized (this) { |
| if (remoteId != null) { |
| if (this.returnValue == null) { |
| this.returnValue = remoteId; |
| } else { |
| if (remoteId.intValue() > this.returnValue.intValue()) { |
| this.returnValue = remoteId; |
| } |
| } |
| } |
| } |
| if (logger.isTraceEnabled(LogMarker.DM_VERBOSE)) { |
| logger.trace(LogMarker.DM_VERBOSE, "{} return value is {}", getClass().getName(), |
| this.returnValue); |
| } |
| } |
| } finally { |
| super.process(msg); |
| } |
| } |
| |
| /** |
| * Fetch the next <code>PartitionedRegion</code> identity, used to uniquely identify (globally) |
| * each instance of a <code>PartitionedRegion</code> |
| * |
| * @return the next highest Integer for the <code>PartitionedRegion</code> or null if this is |
| * the first identity |
| * |
| * @see PartitionMessage#getRegionId() |
| */ |
| public Integer waitForId() { |
| try { |
| waitForRepliesUninterruptibly(); |
| } catch (ReplyException e) { |
| logger.debug("{} waitBucketSizes ignoring exception {}", getClass().getName(), |
| e.getMessage(), e); |
| } |
| synchronized (this) { |
| return this.returnValue; |
| } |
| } |
| } |
| |
| } |