Question

请参阅以下事件监听器代码。

尝试成为听众的客户端节点：

Ignition.setClientMode(true);
IgniteConfiguration cfg = new IgniteConfiguration();
TcpDiscoveryVmIpFinder ipFinder = new TcpDiscoveryVmIpFinder();
ipFinder.setAddresses(Arrays.asList("127.0.0.1", "127.0.0.1:47500..47509"));
TcpDiscoverySpi spi = new TcpDiscoverySpi();
spi.setIpFinder(ipFinder);
cfg.setDiscoverySpi(spi);
cfg.setIncludeEventTypes(EventType.EVTS_CACHE);
IgnitePredicate<CacheEvent> rmtLsnr = (CacheEvent cacheEvent) -> {

if(cacheEvent.type() == EventType.EVT_CACHE_OBJECT_PUT) {
System.out.println(cacheEvent.name() + "," + cacheEvent.key());

}
            return true;
 };
Ignite ignite = Ignition.start(cfg);
ignite.events(ignite.cluster()
                .forCacheNodes(TestConstants.IgniteEventsTest.ORDER_CACHE))
                .remoteListen(null,rmtLsnr,EventType.EVTS_CACHE);

托管缓存的服务器节点：

IgniteConfiguration cfg = new IgniteConfiguration();

TcpDiscoveryVmIpFinder ipFinder = new TcpDiscoveryVmIpFinder();

ipFinder.setAddresses(Arrays.asList("127.0.0.1", "127.0.0.1:47500..47509"));

TcpDiscoverySpi spi = new TcpDiscoverySpi();

spi.setIpFinder(ipFinder);

cfg.setDiscoverySpi(spi);

Ignite ignite = Ignition.start(cfg);
CacheConfiguration cacheCfg = new CacheConfiguration(TestConstants.IgniteEventsTest.ORDER_CACHE);
cacheCfg.setCacheMode(CacheMode.PARTITIONED);
cacheCfg.setWriteSynchronizationMode(FULL_ASYNC);
cacheCfg.setBackups(1);

远程客户端更新缓存：

Ignition.setClientMode(true);
IgniteConfiguration cfg = new IgniteConfiguration();
TcpDiscoveryVmIpFinder ipFinder = new TcpDiscoveryVmIpFinder();
ipFinder.setAddresses(Arrays.asList("127.0.0.1", "127.0.0.1:47500..47509"));
TcpDiscoverySpi spi = new TcpDiscoverySpi();
spi.setIpFinder(ipFinder);
cfg.setDiscoverySpi(spi);

Ignite ignite = Ignition.start(cfg);
CacheConfiguration cacheCfg = new CacheConfiguration(TestConstants.IgniteEventsTest.ORDER_CACHE);
cacheCfg.setCacheMode(CacheMode.PARTITIONED);
cacheCfg.setWriteSynchronizationMode(FULL_SYNC);
IgniteCache<Integer, Order> 
clientOrderCache  = ignite.getOrCreateCache(cacheCfg);

in a loop...

clientOrderCache.put(key , order);

我的观察是，当事件监听器上的ClientMode = true时，我们不接收事件。如果事件监听器必须处于服务器模式以监听事件，请告诉我吗？或者我做错了什么？

Answer 1

您没有定义本地侦听器（代码中的null）。始终在触发事件的地方执行远程过滤器，在高速缓存更新的情况下，它是其中一个服务器节点。如果您也创建了本地侦听器，则远程过滤器返回true的所有事件都将传播到客户端。

请参阅CacheEventsExample [1]以获取代码示例。

[1] https://github.com/apache/ignite/blob/master/examples/src/main/java/org/apache/ignite/examples/datagrid/CacheEventsExample.java

当setClientMode = true时，Apache Ignite事件侦听器不会收到远程事件

1 个答案: