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java.lang.Objectcom.alibaba.dubbo.registry.support.AbstractRegistry
com.alibaba.dubbo.registry.support.FailbackRegistry
public abstract class FailbackRegistry
FailbackRegistry. (SPI, Prototype, ThreadSafe)
Constructor Summary | |
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FailbackRegistry(URL url)
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Method Summary | |
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void |
destroy()
destroy. |
Map<URL,Map<NotifyListener,List<URL>>> |
getFailedNotified()
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Set<URL> |
getFailedRegistered()
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Map<URL,Set<NotifyListener>> |
getFailedSubscribed()
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Set<URL> |
getFailedUnregistered()
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Map<URL,Set<NotifyListener>> |
getFailedUnsubscribed()
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Future<?> |
getRetryFuture()
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void |
register(URL url)
注册数据,比如:提供者地址,消费者地址,路由规则,覆盖规则,等数据。 |
void |
subscribe(URL url,
NotifyListener listener)
订阅符合条件的已注册数据,当有注册数据变更时自动推送. |
void |
unregister(URL url)
取消注册. |
void |
unsubscribe(URL url,
NotifyListener listener)
取消订阅. |
Methods inherited from class com.alibaba.dubbo.registry.support.AbstractRegistry |
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doSaveProperties, getCacheFile, getCacheProperties, getCacheUrls, getLastCacheChanged, getNotified, getRegistered, getSubscribed, getUrl, lookup, toString |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface com.alibaba.dubbo.common.Node |
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isAvailable |
Constructor Detail |
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public FailbackRegistry(URL url)
Method Detail |
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public Future<?> getRetryFuture()
public Set<URL> getFailedRegistered()
public Set<URL> getFailedUnregistered()
public Map<URL,Set<NotifyListener>> getFailedSubscribed()
public Map<URL,Set<NotifyListener>> getFailedUnsubscribed()
public Map<URL,Map<NotifyListener,List<URL>>> getFailedNotified()
public void register(URL url)
RegistryService
注册需处理契约:
1. 当URL设置了check=false时,注册失败后不报错,在后台定时重试,否则抛出异常。
2. 当URL设置了dynamic=false参数,则需持久存储,否则,当注册者出现断电等情况异常退出时,需自动删除。
3. 当URL设置了category=routers时,表示分类存储,缺省类别为providers,可按分类部分通知数据。
4. 当注册中心重启,网络抖动,不能丢失数据,包括断线自动删除数据。
5. 允许URI相同但参数不同的URL并存,不能覆盖。
register
in interface RegistryService
register
in class AbstractRegistry
url
- 注册信息,不允许为空,如:dubbo://10.20.153.10/com.alibaba.foo.BarService?version=1.0.0&application=kylinpublic void unregister(URL url)
RegistryService
取消注册需处理契约:
1. 如果是dynamic=false的持久存储数据,找不到注册数据,则抛IllegalStateException,否则忽略。
2. 按全URL匹配取消注册。
unregister
in interface RegistryService
unregister
in class AbstractRegistry
url
- 注册信息,不允许为空,如:dubbo://10.20.153.10/com.alibaba.foo.BarService?version=1.0.0&application=kylinpublic void subscribe(URL url, NotifyListener listener)
RegistryService
订阅需处理契约:
1. 当URL设置了check=false时,订阅失败后不报错,在后台定时重试。
2. 当URL设置了category=routers,只通知指定分类的数据,多个分类用逗号分隔,并允许星号通配,表示订阅所有分类数据。
3. 允许以interface,group,version,classifier作为条件查询,如:interface=com.alibaba.foo.BarService&version=1.0.0
4. 并且查询条件允许星号通配,订阅所有接口的所有分组的所有版本,或:interface=*&group=*&version=*&classifier=*
5. 当注册中心重启,网络抖动,需自动恢复订阅请求。
6. 允许URI相同但参数不同的URL并存,不能覆盖。
7. 必须阻塞订阅过程,等第一次通知完后再返回。
subscribe
in interface RegistryService
subscribe
in class AbstractRegistry
url
- 订阅条件,不允许为空,如:consumer://10.20.153.10/com.alibaba.foo.BarService?version=1.0.0&application=kylinlistener
- 变更事件监听器,不允许为空public void unsubscribe(URL url, NotifyListener listener)
RegistryService
取消订阅需处理契约:
1. 如果没有订阅,直接忽略。
2. 按全URL匹配取消订阅。
unsubscribe
in interface RegistryService
unsubscribe
in class AbstractRegistry
url
- 订阅条件,不允许为空,如:consumer://10.20.153.10/com.alibaba.foo.BarService?version=1.0.0&application=kylinlistener
- 变更事件监听器,不允许为空public void destroy()
Node
destroy
in interface Node
destroy
in class AbstractRegistry
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