| /* |
| * 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.gossip.protocol; |
| |
| import com.codahale.metrics.Meter; |
| import com.codahale.metrics.MetricRegistry; |
| import org.apache.gossip.GossipSettings; |
| import org.apache.gossip.manager.PassiveGossipConstants; |
| import org.apache.gossip.model.Base; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| // doesn't serialize anything besides longs. Uses a static lookup table to read and write objects. |
| public class UnitTestProtocolManager implements ProtocolManager { |
| |
| // so it can be shared across gossipers. this works as long as each object has a different memory address. |
| private static final Map<Long, Base> lookup = new ConcurrentHashMap<>(); |
| private final Meter meter; |
| |
| public UnitTestProtocolManager(GossipSettings settings, String id, MetricRegistry registry) { |
| meter = settings.isSignMessages() ? |
| registry.meter(PassiveGossipConstants.SIGNED_MESSAGE) : |
| registry.meter(PassiveGossipConstants.UNSIGNED_MESSAGE); |
| } |
| |
| private static byte[] longToBytes(long val) { |
| byte[] b = new byte[8]; |
| b[7] = (byte) (val); |
| b[6] = (byte) (val >>> 8); |
| b[5] = (byte) (val >>> 16); |
| b[4] = (byte) (val >>> 24); |
| b[3] = (byte) (val >>> 32); |
| b[2] = (byte) (val >>> 40); |
| b[1] = (byte) (val >>> 48); |
| b[0] = (byte) (val >>> 56); |
| return b; |
| } |
| |
| static long bytesToLong(byte[] b) { |
| return ((b[7] & 0xFFL)) + |
| ((b[6] & 0xFFL) << 8) + |
| ((b[5] & 0xFFL) << 16) + |
| ((b[4] & 0xFFL) << 24) + |
| ((b[3] & 0xFFL) << 32) + |
| ((b[2] & 0xFFL) << 40) + |
| ((b[1] & 0xFFL) << 48) + |
| (((long) b[0]) << 56); |
| } |
| |
| @Override |
| public byte[] write(Base message) throws IOException { |
| long hashCode = System.identityHashCode(message); |
| byte[] serialized = longToBytes(hashCode); |
| lookup.put(hashCode, message); |
| meter.mark(); |
| return serialized; |
| } |
| |
| @Override |
| public Base read(byte[] buf) throws IOException { |
| long hashCode = bytesToLong(buf); |
| return lookup.remove(hashCode); |
| } |
| } |