| /* |
| * 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.examples; |
| |
| import com.codahale.metrics.MetricRegistry; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.net.URI; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| |
| import org.apache.gossip.GossipService; |
| import org.apache.gossip.GossipSettings; |
| import org.apache.gossip.RemoteGossipMember; |
| import org.apache.gossip.crdt.OrSet; |
| import org.apache.gossip.model.SharedGossipDataMessage; |
| |
| public class StandAloneNodeCrdtOrSet { |
| public static void main (String [] args) throws InterruptedException, IOException{ |
| GossipSettings s = new GossipSettings(); |
| s.setWindowSize(10); |
| s.setConvictThreshold(1.0); |
| s.setGossipInterval(10); |
| GossipService gossipService = new GossipService("mycluster", URI.create(args[0]), args[1], new HashMap<String, String>(), |
| Arrays.asList( new RemoteGossipMember("mycluster", URI.create(args[2]), args[3])), s, (a,b) -> {}, new MetricRegistry()); |
| gossipService.start(); |
| |
| new Thread(() -> { |
| while (true){ |
| System.out.println("Live: " + gossipService.getGossipManager().getLiveMembers()); |
| System.out.println("Dead: " + gossipService.getGossipManager().getDeadMembers()); |
| System.out.println("---------- " + (gossipService.getGossipManager().findCrdt("abc") == null ? "": |
| gossipService.getGossipManager().findCrdt("abc").value())); |
| System.out.println("********** " + gossipService.getGossipManager().findCrdt("abc")); |
| try { |
| Thread.sleep(2000); |
| } catch (Exception e) {} |
| } |
| }).start(); |
| |
| String line = null; |
| try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in))){ |
| while ( (line = br.readLine()) != null){ |
| System.out.println(line); |
| char op = line.charAt(0); |
| String val = line.substring(2); |
| if (op == 'a'){ |
| addData(val, gossipService); |
| } else { |
| removeData(val, gossipService); |
| } |
| } |
| } |
| } |
| |
| private static void removeData(String val, GossipService gossipService){ |
| OrSet<String> s = (OrSet<String>) gossipService.getGossipManager().findCrdt("abc"); |
| SharedGossipDataMessage m = new SharedGossipDataMessage(); |
| m.setExpireAt(Long.MAX_VALUE); |
| m.setKey("abc"); |
| m.setPayload(new OrSet<String>(s , new OrSet.Builder<String>().remove(val))); |
| m.setTimestamp(System.currentTimeMillis()); |
| gossipService.getGossipManager().merge(m); |
| } |
| |
| private static void addData(String val, GossipService gossipService){ |
| SharedGossipDataMessage m = new SharedGossipDataMessage(); |
| m.setExpireAt(Long.MAX_VALUE); |
| m.setKey("abc"); |
| m.setPayload(new OrSet<String>(val)); |
| m.setTimestamp(System.currentTimeMillis()); |
| gossipService.getGossipManager().merge(m); |
| } |
| } |