| /* |
| * 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; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.geode.cache.CacheLoader; |
| import org.apache.geode.cache.CacheWriter; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.internal.ExternalizableDSFID; |
| import org.apache.geode.internal.InternalDataSerializer; |
| import org.apache.geode.internal.Version; |
| |
| /** |
| * Stores information about a PartitionedRegion singleton instance running inside a virtual machine. |
| * This Node is said to be a participant, cooperating with other Nodes to physically manage a |
| * logically named PartitionedRegion. |
| * <p> |
| * Nodes are stored in a list within PartitionedRegionConfig which is stored globally as the value |
| * of an named entry in the <code>DistributedHashMap.PARTITIONED_REGION_NAME</code>. Node must be |
| * Serializable and have a no args Constructor. Since Nodes are used as keys in each Thread's |
| * ThreadLocal map of Nodes to Connections, Node must implement hashCode and equals. |
| * <p> |
| * Node maintains a field for maxMemory (fixed) to enable other Nodes to determine whether the Node |
| * should be the target of a canRebalance request. If the Node's maxMemory is 0, then the Node is |
| * advertising that it never should receive a request to rebalance. |
| * |
| */ |
| public class Node extends ExternalizableDSFID { |
| private InternalDistributedMember memberId; |
| |
| public static final int NONE = 0; |
| public static final int ACCESSOR = 1; |
| public static final int DATASTORE = 2; |
| public static final int ACCESSOR_DATASTORE = 3; |
| public static final int FIXED_PR_ACCESSOR = 4; |
| public static final int FIXED_PR_DATASTORE = 5; |
| |
| private int prType = Node.NONE; |
| |
| private boolean isPersistent = false; |
| |
| private byte cacheLoaderWriterByte; |
| |
| private int serialNumber; |
| |
| public Node(InternalDistributedMember id, int serialNumber) { |
| this.memberId = id; |
| this.serialNumber = serialNumber; |
| } |
| |
| public Node(Node node) { |
| this.memberId = node.getMemberId(); |
| this.serialNumber = node.serialNumber; |
| } |
| |
| public Node(DataInput in) throws IOException, ClassNotFoundException { |
| fromData(in); |
| } |
| |
| // for Externalizable |
| public Node() {} |
| |
| public InternalDistributedMember getMemberId() { |
| return this.memberId; |
| } |
| |
| public boolean isPersistent() { |
| return this.isPersistent; |
| } |
| |
| public void setPersistence(boolean isPersistent) { |
| this.isPersistent = isPersistent; |
| } |
| |
| @Override |
| public String toString() { |
| return ("Node=[memberId=" + this.memberId + "; prType=" + prType + "; isPersistent=" |
| + isPersistent + "]"); |
| } |
| |
| @Override |
| public int hashCode() { |
| return this.memberId.hashCode() + 31 * serialNumber; |
| } |
| |
| public int getPRType() { |
| return prType; |
| } |
| |
| public void setPRType(int type) { |
| this.prType = type; |
| } |
| |
| void setLoaderAndWriter(CacheLoader loader, CacheWriter writer) { |
| byte loaderByte = (byte) (loader != null ? 0x01 : 0x00); |
| byte writerByte = (byte) (writer != null ? 0x02 : 0x00); |
| this.cacheLoaderWriterByte = (byte) (loaderByte + writerByte); |
| } |
| |
| public boolean isCacheLoaderAttached() { |
| if (this.cacheLoaderWriterByte == 0x01 || this.cacheLoaderWriterByte == 0x03) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| public boolean isCacheWriterAttached() { |
| if (this.cacheLoaderWriterByte == 0x02 || this.cacheLoaderWriterByte == 0x03) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| if (obj instanceof Node) { |
| Node n = (Node) obj; |
| if (this.memberId.equals(n.memberId) && this.serialNumber == n.serialNumber) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public int getDSFID() { |
| return PR_NODE; |
| } |
| |
| @Override |
| public void toData(DataOutput out) throws IOException { |
| InternalDataSerializer.invokeToData(this.memberId, out); |
| out.writeInt(this.prType); |
| out.writeBoolean(this.isPersistent); |
| out.writeByte(this.cacheLoaderWriterByte); |
| out.writeInt(serialNumber); |
| } |
| |
| @Override |
| public void fromData(DataInput in) throws IOException, ClassNotFoundException { |
| this.memberId = new InternalDistributedMember(); |
| InternalDataSerializer.invokeFromData(this.memberId, in); |
| this.prType = in.readInt(); |
| this.isPersistent = in.readBoolean(); |
| this.cacheLoaderWriterByte = in.readByte(); |
| this.serialNumber = in.readInt(); |
| } |
| |
| @Override |
| public Version[] getSerializationVersions() { |
| return null; |
| } |
| } |