com.alibaba.cloud.dubbo.autoconfigure

Class DubboServiceDiscoveryAutoConfiguration.ZookeeperConfiguration

java.lang.Object

com.alibaba.cloud.dubbo.autoconfigure.DubboServiceDiscoveryAutoConfiguration.ZookeeperConfiguration

All Implemented Interfaces:

EventListener, org.springframework.context.ApplicationListener<org.springframework.cloud.client.discovery.event.InstanceRegisteredEvent>

Enclosing class:

DubboServiceDiscoveryAutoConfiguration

@Configuration(proxyBeanMethods=false)
 @ConditionalOnBean(name="org.springframework.cloud.zookeeper.discovery.ZookeeperDiscoveryAutoConfiguration")
public class DubboServiceDiscoveryAutoConfiguration.ZookeeperConfiguration
extends Object
implements org.springframework.context.ApplicationListener<org.springframework.cloud.client.discovery.event.InstanceRegisteredEvent>

Zookeeper Customized Configuration.

Field Summary

Fields

Modifier and Type	Field and Description
static String	CHILD_EVENT_POINTCUT_EXPRESSION The pointcut expression for ZookeeperServiceWatch.childEvent(CuratorFramework, TreeCacheEvent).
static String	NODE_PATH_SEPARATOR The path separator of Zookeeper node.

Method Summary

Modifier and Type	Method and Description
void	afterChildEvent(org.apache.curator.framework.CuratorFramework client, org.apache.curator.framework.recipes.cache.TreeCacheEvent event)
void	beforeChildEvent(org.apache.curator.framework.CuratorFramework client, org.apache.curator.framework.recipes.cache.TreeCacheEvent event) Try to dispatch ServiceInstancesChangedEvent before ZookeeperServiceWatch.childEvent(CuratorFramework, TreeCacheEvent) execution if required.
Predicate<org.springframework.cloud.client.discovery.event.HeartbeatEvent>	heartbeatEventChangedPredicate() Zookeeper uses TreeCacheEvent to trigger #dispatchServiceInstancesChangedEvent(String, Collection) , thus HeartbeatEvent handle is always ignored.
void	onApplicationEvent(org.springframework.cloud.client.discovery.event.InstanceRegisteredEvent event) Handle on InstanceRegisteredEvent after ZookeeperServiceWatch.onApplicationEvent(InstanceRegisteredEvent).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CHILD_EVENT_POINTCUT_EXPRESSION

public static final String CHILD_EVENT_POINTCUT_EXPRESSION

The pointcut expression for ZookeeperServiceWatch.childEvent(CuratorFramework, TreeCacheEvent).

See Also:

Constant Field Values

NODE_PATH_SEPARATOR

public static final String NODE_PATH_SEPARATOR

The path separator of Zookeeper node.

See Also:

Constant Field Values

Method Detail

heartbeatEventChangedPredicate

@Bean
public Predicate<org.springframework.cloud.client.discovery.event.HeartbeatEvent> heartbeatEventChangedPredicate()

Zookeeper uses TreeCacheEvent to trigger #dispatchServiceInstancesChangedEvent(String, Collection) , thus HeartbeatEvent handle is always ignored.

Returns:

false forever

onApplicationEvent

public void onApplicationEvent(org.springframework.cloud.client.discovery.event.InstanceRegisteredEvent event)

Handle on InstanceRegisteredEvent after ZookeeperServiceWatch.onApplicationEvent(InstanceRegisteredEvent).

Specified by:

onApplicationEvent in interface org.springframework.context.ApplicationListener<org.springframework.cloud.client.discovery.event.InstanceRegisteredEvent>

Parameters:

event - InstanceRegisteredEvent

See Also:

reattachTreeCacheListeners()

beforeChildEvent

public void beforeChildEvent(org.apache.curator.framework.CuratorFramework client,
                             org.apache.curator.framework.recipes.cache.TreeCacheEvent event)

Try to dispatch ServiceInstancesChangedEvent before ZookeeperServiceWatch.childEvent(CuratorFramework, TreeCacheEvent) execution if required.

Parameters:

client - CuratorFramework

event - TreeCacheEvent

afterChildEvent

public void afterChildEvent(org.apache.curator.framework.CuratorFramework client,
                            org.apache.curator.framework.recipes.cache.TreeCacheEvent event)