org.apache.dubbo.rpc.cluster.governance

接口 GovernanceRuleRepository

所有已知实现类:

DefaultGovernanceRuleRepositoryImpl

@SPI(value="default")
public interface GovernanceRuleRepository

字段概要

字段

限定符和类型	字段和说明
static String	DEFAULT_GROUP

方法概要

限定符和类型	方法和说明
default void	addListener(String key, org.apache.dubbo.common.config.configcenter.ConfigurationListener listener) addListener(String, String, ConfigurationListener)
void	addListener(String key, String group, org.apache.dubbo.common.config.configcenter.ConfigurationListener listener) Register a configuration listener for a specified key The listener only works for service governance purpose, so the target group would always be the value user specifies at startup or 'dubbo' by default.
default String	getRule(String key, String group) Get the governance rule mapped to the given key and the given group
String	getRule(String key, String group, long timeout) Get the governance rule mapped to the given key and the given group.
default void	removeListener(String key, org.apache.dubbo.common.config.configcenter.ConfigurationListener listener)
void	removeListener(String key, String group, org.apache.dubbo.common.config.configcenter.ConfigurationListener listener) Stops one listener from listening to value changes in the specified key.

字段详细资料

DEFAULT_GROUP

static final String DEFAULT_GROUP

另请参阅:

常量字段值

方法详细资料

addListener

default void addListener(String key,
                         org.apache.dubbo.common.config.configcenter.ConfigurationListener listener)

addListener(String, String, ConfigurationListener)

参数:

key - the key to represent a configuration

listener - configuration listener

removeListener

default void removeListener(String key,
                            org.apache.dubbo.common.config.configcenter.ConfigurationListener listener)

addListener

void addListener(String key,
                 String group,
                 org.apache.dubbo.common.config.configcenter.ConfigurationListener listener)

Register a configuration listener for a specified key The listener only works for service governance purpose, so the target group would always be the value user specifies at startup or 'dubbo' by default. This method will only register listener, which means it will not trigger a notification that contains the current value.

参数:

key - the key to represent a configuration

group - the group where the key belongs to

listener - configuration listener

removeListener

void removeListener(String key,
                    String group,
                    org.apache.dubbo.common.config.configcenter.ConfigurationListener listener)

Stops one listener from listening to value changes in the specified key.

参数:

key - the key to represent a configuration

group - the group where the key belongs to

listener - configuration listener

getRule

default String getRule(String key,
                       String group)

Get the governance rule mapped to the given key and the given group

参数:

key - the key to represent a configuration

group - the group where the key belongs to

返回:

target configuration mapped to the given key and the given group

getRule

String getRule(String key,
               String group,
               long timeout)
        throws IllegalStateException

Get the governance rule mapped to the given key and the given group. If the rule fails to return after timeout exceeds, IllegalStateException will be thrown.

参数:

key - the key to represent a configuration

group - the group where the key belongs to

timeout - timeout value for fetching the target config

返回:

target configuration mapped to the given key and the given group, IllegalStateException will be thrown if timeout exceeds.

抛出:

IllegalStateException