程序包 org.apache.dubbo.registry.dns

类 DNSServiceDiscovery

java.lang.Object

org.apache.dubbo.registry.client.SelfHostMetaServiceDiscovery

org.apache.dubbo.registry.dns.DNSServiceDiscovery

所有已实现的接口:

Comparable<Prioritized>, Prioritized, ServiceDiscovery

public class DNSServiceDiscovery
extends SelfHostMetaServiceDiscovery

字段概要

从接口继承的字段 org.apache.dubbo.common.lang.Prioritized

COMPARATOR, MAX_PRIORITY, MIN_PRIORITY, NORMAL_PRIORITY

构造器概要

构造器

构造器	说明
DNSServiceDiscovery()

方法概要

修饰符和类型	方法	说明
void	addServiceInstancesChangedListener(ServiceInstancesChangedListener listener)	Add an instance of ServiceInstancesChangedListener for specified service
void	doDestroy()
void	doInitialize(URL registryURL)
List<ServiceInstance>	getInstances(String serviceName)	Gets all service instances by the specified service name.
Set<String>	getServices()	Gets all service names
void	setDnsResolver(DNSResolver dnsResolver)	已过时。

从类继承的方法 org.apache.dubbo.registry.client.SelfHostMetaServiceDiscovery

destroy, doRegister, doUnregister, doUpdate, fillServiceInstance, getCachedServiceInstances, getLocalInstance, getUrl, initialize, isDestroy, notifyListener, register, unregister, update

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.dubbo.common.lang.Prioritized

compareTo, getPriority

从接口继承的方法 org.apache.dubbo.registry.client.ServiceDiscovery

createListener, dispatchServiceInstancesChangedEvent, dispatchServiceInstancesChangedEvent, dispatchServiceInstancesChangedEvent, dispatchServiceInstancesChangedEvent, getDefaultPageSize, getDelay, getInstances, getInstances, getInstances, removeServiceInstancesChangedListener, toString

构造器详细资料

DNSServiceDiscovery

public DNSServiceDiscovery()

方法详细资料

doInitialize

public void doInitialize(URL registryURL)
                  throws Exception

覆盖:

doInitialize 在类中 SelfHostMetaServiceDiscovery

抛出:

Exception

doDestroy

public void doDestroy()
               throws Exception

覆盖:

doDestroy 在类中 SelfHostMetaServiceDiscovery

抛出:

Exception

getServices

public Set<String> getServices()

从接口复制的说明: ServiceDiscovery

Gets all service names

返回:

non-null read-only Set

getInstances

public List<ServiceInstance> getInstances(String serviceName)
                                   throws NullPointerException

从接口复制的说明: ServiceDiscovery

Gets all service instances by the specified service name.

参数:

serviceName - the service name

返回:

non-null List

抛出:

NullPointerException - if serviceName is null

addServiceInstancesChangedListener

public void addServiceInstancesChangedListener(ServiceInstancesChangedListener listener)
                                        throws NullPointerException,
                                               IllegalArgumentException

从接口复制的说明: ServiceDiscovery

Add an instance of ServiceInstancesChangedListener for specified service

Default, Current method will be invoked by the ServiceDiscoveryRegistry on the subscription, this method is used to trigger or adapt the vendor's change notification mechanism typically, like Zookeeper Watcher, Nacos EventListener. If the registry observes the change, It's suggested that the implementation could invoke ServiceDiscovery.dispatchServiceInstancesChangedEvent(String) method or variants

参数:

listener - an instance of ServiceInstancesChangedListener

抛出:

NullPointerException

IllegalArgumentException

setDnsResolver

@Deprecated
public void setDnsResolver(DNSResolver dnsResolver)

已过时。

UT used only