Java HostAndPort類代碼示例

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
/**
 * 注意：
 * 這裏返回的JedisCluster是單例的，並且可以直接注入到其他類中去使用
 * @return
 */
@Bean
public JedisCluster getJedisCluster() {
    //獲取服務器數組(這裏要相信自己的輸入，所以沒有考慮空指針問題)
    String[] serverArray = redisProperties.getClusterNodes().split(",");
    Set<HostAndPort> nodes = new HashSet<>();

    for (String ipPort : serverArray) {
        String[] ipPortPair = ipPort.split(":");
        nodes.add(new HostAndPort(ipPortPair[0].trim(), Integer.valueOf(ipPortPair[1].trim())));
    }

    return new JedisCluster(nodes,10000,
            1000,1,redisProperties.getPassword() ,
            new GenericObjectPoolConfig());
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
@Override
public Jedis getResource() {
    while (true) {
        Jedis jedis = super.getResource();
        jedis.setDataSource(this);

        // get a reference because it can change concurrently
        final HostAndPort master = currentHostMaster;
        final HostAndPort connection = new HostAndPort(jedis.getClient().getHost(), jedis.getClient()
                .getPort());

        if (master.equals(connection)) {
            // connected to the correct master
            return jedis;
        } else {
            returnBrokenResource(jedis);
        }
    }
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
private void forceFailover(JedisSentinelPool pool) throws InterruptedException {
  HostAndPort oldMaster = pool.getCurrentHostMaster();

  // jedis connection should be master
  Jedis beforeFailoverJedis = pool.getResource();
  assertEquals("PONG", beforeFailoverJedis.ping());

  waitForFailover(pool, oldMaster);

  Jedis afterFailoverJedis = pool.getResource();
  assertEquals("PONG", afterFailoverJedis.ping());
  assertEquals("foobared", afterFailoverJedis.configGet("requirepass").get(1));
  assertEquals(2, afterFailoverJedis.getDB().intValue());

  // returning both connections to the pool should not throw
  beforeFailoverJedis.close();
  afterFailoverJedis.close();
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
@Test
public void testCalculateConnectionPerSlot() {
  Set<HostAndPort> jedisClusterNode = new HashSet<HostAndPort>();
  jedisClusterNode.add(new HostAndPort("127.0.0.1", 7379));
  JedisCluster jc = new JedisCluster(jedisClusterNode, DEFAULT_TIMEOUT, DEFAULT_TIMEOUT, DEFAULT_REDIRECTIONS, "cluster", DEFAULT_CONFIG);
  jc.set("foo", "bar");
  jc.set("test", "test");
  assertEquals("bar", node3.get("foo"));
  assertEquals("test", node2.get("test"));
  
  JedisCluster jc2 = new JedisCluster(new HostAndPort("127.0.0.1", 7379), DEFAULT_TIMEOUT, DEFAULT_TIMEOUT, DEFAULT_REDIRECTIONS, "cluster", DEFAULT_CONFIG);
  jc2.set("foo", "bar");
  jc2.set("test", "test");
  assertEquals("bar", node3.get("foo"));
  assertEquals("test", node2.get("test"));
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
@Test
public void testStableSlotWhenMigratingNodeOrImportingNodeIsNotSpecified()
    throws InterruptedException {
  Set<HostAndPort> jedisClusterNode = new HashSet<HostAndPort>();
  jedisClusterNode.add(new HostAndPort(nodeInfo1.getHost(), nodeInfo1.getPort()));
  JedisCluster jc = new JedisCluster(jedisClusterNode, DEFAULT_TIMEOUT, DEFAULT_TIMEOUT, DEFAULT_REDIRECTIONS, "cluster", DEFAULT_CONFIG);

  int slot51 = JedisClusterCRC16.getSlot("51");
  jc.set("51", "foo");
  // node2 is responsible of taking care of slot51 (7186)

  node3.clusterSetSlotImporting(slot51, JedisClusterTestUtil.getNodeId(node2.clusterNodes()));
  assertEquals("foo", jc.get("51"));
  node3.clusterSetSlotStable(slot51);
  assertEquals("foo", jc.get("51"));

  node2.clusterSetSlotMigrating(slot51, JedisClusterTestUtil.getNodeId(node3.clusterNodes()));
  // assertEquals("foo", jc.get("51")); // it leads Max Redirections
  node2.clusterSetSlotStable(slot51);
  assertEquals("foo", jc.get("51"));
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
@Bean//bean
public JedisCluster getJedisCluster() {
    //解析字符串
    Set<HostAndPort> nodes = new HashSet<>();
    try {
        String[] cNodes = clusterNodes.split(",");
        for (String cNode : cNodes) {
            //192.168.123.1:7001
            String[] hp = cNode.split(":");
            nodes.add(new HostAndPort(hp[0], Integer.parseInt(hp[1])));

        }
        return new JedisCluster(nodes);
    } catch (ArrayIndexOutOfBoundsException | PatternSyntaxException | NullPointerException e) {
        e.printStackTrace();
    }
    return null;


}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
/**
 * This method is called by PDI during transformation startup. 
 *
 * @param smi 	step meta interface implementation, containing the step settings
 * @param sdi	step data interface implementation, used to store runtime information
 * 
 * @return true if initialization completed successfully, false if there was an error preventing the step from working. 
 *  
 */
public boolean init(StepMetaInterface smi, StepDataInterface sdi) {
	// Casting to step-specific implementation classes is safe
	RedisOutputStepMeta meta = (RedisOutputStepMeta) smi;
	RedisOutputStepData data = (RedisOutputStepData) sdi;
       String url = environmentSubstitute(meta.getUrl());
       logBasic("creating redis session factory, addresses=" + url);
       if (url == null || url.isEmpty()) {
       	throw new IllegalArgumentException("redis cluster url set configured");
	}
	String[] redisNodes = url.split(",");
	Set<HostAndPort> jedisClusterNodes = new HashSet<>();
	try {
           for (String redisNode: redisNodes) {
               String[] config = redisNode.split(":");
               jedisClusterNodes.add(new HostAndPort(config[0], Integer.parseInt(config[1])));
           }
	} catch (IllegalArgumentException ex) {
		throw new IllegalArgumentException("redis cluster url not configured correctly");
	}
       client = new JedisCluster(jedisClusterNodes, REDIS_TIMEOUT, new GenericObjectPoolConfig());
	return super.init(meta, data);
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
@Bean
public JedisCluster getJedisCluster() {
    List<String> serverArray = redisProperties.getNodes();
    Set<HostAndPort> nodes = new HashSet<>();

    for (String ipPort : serverArray) {
        String[] ipPortPair = ipPort.split(":");
        nodes.add(new HostAndPort(ipPortPair[0].trim(), Integer.valueOf(ipPortPair[1].trim())));
    }
    JedisPoolConfig config = new JedisPoolConfig();
    config.setMaxTotal(500);
    config.setMaxIdle(1000 * 60);
    config.setMaxWaitMillis(1000 * 10);
    config.setTestOnBorrow(true);
    return new JedisCluster(nodes, config);
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
/**
 * method to get jedis nodes
 * 
 * @param hosts
 * @param clusterEnabled
 * @return
 */
private Collection<? extends Serializable> getJedisNodes(String hosts, boolean clusterEnabled) {
	hosts = hosts.replaceAll("\\s", "");
	String[] hostPorts = hosts.split(",");

	List<String> node = null;
	Set<HostAndPort> nodes = null;

	for (String hostPort : hostPorts) {
		String[] hostPortArr = hostPort.split(":");

		if (clusterEnabled) {
			nodes = (nodes == null) ? new HashSet<HostAndPort>() : nodes;
			nodes.add(new HostAndPort(hostPortArr[0], Integer.valueOf(hostPortArr[1])));
		} else {
			int port = Integer.valueOf(hostPortArr[1]);
			if (!hostPortArr[0].isEmpty() && port > 0) {
				node = (node == null) ? new ArrayList<String>() : node;
				node.add(hostPortArr[0]);
				node.add(String.valueOf(port));
				break;
			}
		}
	}
	return clusterEnabled ? nodes : node;
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
private ScanPage exist(String cluster, ScanPage scanPage) throws Exception {
	scanPage.setHasMore(false);
	List<D_RedisClusterNode> nodes = clusterNodeService.getAllClusterNodes(cluster);
	Set<HostAndPort> masters = new HashSet<HostAndPort>();
	nodes.forEach(node->{
		masters.add(new HostAndPort(node.getHost(), node.getPort()));
	});
	JedisCluster jedis = new JedisCluster(masters);
	try {
		if(jedis.exists(scanPage.getQuery())){
			scanPage.setKeys(new HashSet<String>());
			scanPage.getKeys().add(scanPage.getQuery());
		}
	} finally {
		jedis.close();
	}
	return scanPage;
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
public ScanPage query(String cluster, ScanPage scanPage) throws Exception {
	D_ClusterNode_Tree tree = clusterNodeService.getClusterTree(cluster);
	Set<HostAndPort> masters = new HashSet<HostAndPort>();
	for (D_ClusterNode_Master nodes : tree.getMasters()) {//每一個分片獲取一個節點
		D_RedisClusterNode node = nodes.getMaster();
		if(node.getStatus() == RedisNodeStatus.CONNECT){
			masters.add(new HostAndPort(node.getHost(), node.getPort()));
		}else{
			for (D_RedisClusterNode slave : nodes.getSlaves()) {
				if(slave.getStatus() == RedisNodeStatus.CONNECT){
					masters.add(new HostAndPort(slave.getHost(), slave.getPort()));
					break;
				}
			}
		}
	}
	RedisClusterScan scan = new RedisClusterScan(masters);
	scanPage.setKeys(null);
	return scan.scan(scanPage);
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
@SuppressWarnings("unchecked")
public M_ClusterSlots(List<Object> clusterSlot, Map<HostAndPort, M_clusterNode> hpNodes){
	hpSlots = new HashMap<HostAndPort, List<Slot>>();
	idSlots = new HashMap<M_clusterNode, List<Slot>>();
	
	for (Object object : clusterSlot) {
		List<Object> tmp = (List<Object>) object;
		Long start = (Long) tmp.get(0);
		Long end = (Long) tmp.get(1);
		for (int i = 2; i < tmp.size(); i++) {
			List<Object> nodeSlot = (List<Object>)tmp.get(i);
			HostAndPort hp = new HostAndPort(new String((byte[]) nodeSlot.get(0)), ((Long)nodeSlot.get(1)).intValue());
			M_clusterNode node = hpNodes.get(hp);
			
			List<Slot> slot;
			if(!hpSlots.containsKey(hp)){
				slot = new ArrayList<Slot>();
			}else{
				slot = hpSlots.get(hp);
			}
			slot.add(new Slot(start, end));
			hpSlots.put(hp, slot);
			idSlots.put(node, slot);
		}
	}
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
/**
 * 分配槽
 */
public static void assignSlot(List<HostAndPort> masters, Map<HostAndPort, RedisClusterTerminal> clients, Notify notify) {
	message(notify, ">> AssignSlot Start ... ");
	int slotSize = 16384 / masters.size();
	for (int i = 0; i < masters.size(); i++) {
		int start = i * slotSize;
		int end = (i + 1) * slotSize;
		if((i + 1) == masters.size()){
			end = 16384;
		}
		HostAndPort master = masters.get(i);
		RedisClusterTerminal cluster = clients.get(master);
		message(notify, ">> assignSlot from " + start + " to " + end + " with " + master);
		for(;start < end; start++) {
			if(start % 1000 == 0){
				message(notify, ">> " + start);
			}
			cluster.clusterAddSlots(start);
		}
	}
	message(notify, ">> assignSlot Done!");
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
/**
 * 將當前槽遷移到該節點
 */
public void reshard(int start,int end)throws Exception {
	message("start move slot from " + start + " to " + end);
	List<M_clusterNode> all = getClusterNode_list();
	Map<HostAndPort, M_clusterNode> hpNodes = new HashMap<HostAndPort, M_clusterNode>();
	M_clusterNode myself = null;
	for (M_clusterNode n : all) {
		if(n.getMaster() == null || "".equals(n.getMaster())){
			hpNodes.put(new HostAndPort(n.getHost(), n.getPort()), n);
		}
		if(n.getMyself()!= null && n.getMyself()){
			myself = n;
		}
	}
	M_ClusterSlots clusterSlots = new M_ClusterSlots(clusterSlots(), hpNodes);
	int i = start;
	while(i <= end){
		M_clusterNode sourceNode = clusterSlots.getNodeBySlot(i);
		if(sourceNode == null || !sourceNode.getNode().equals(myself.getNode())){
			message(">> move :" + i);
			moveSlot(myself, sourceNode, i);
		}
		i++;
	}
}
 

import redis.clients.jedis.HostAndPort; //導入依賴的package包/類
/**
 * 選取Slave節點
 */
private void selectSlave(Map<HostAndPort, List<HostAndPort>> tree, List<HostAndPort> list) {
	List<HostAndPort> keySets = new ArrayList<HostAndPort>(tree.keySet());
	while (list.size() > 0) {
		Collections.shuffle(list);
		Collections.shuffle(keySets);
		for (HostAndPort ipPort : keySets) {
			List<HostAndPort> slaves = tree.get(ipPort);
			List<HostAndPort> exist = new ArrayList<HostAndPort>(slaves);
			exist.add(ipPort);
			HostAndPort tmp = getOtherHost(list, exist);
			if(tmp != null){
				slaves.add(tmp);
				tree.put(ipPort, slaves);
			}
		}
	}
}