Package org.apache.dubbo.rpc.cluster.governance

Class DefaultGovernanceRuleRepositoryImpl

java.lang.Object

org.apache.dubbo.rpc.cluster.governance.DefaultGovernanceRuleRepositoryImpl

All Implemented Interfaces:

GovernanceRuleRepository

public class DefaultGovernanceRuleRepositoryImpl
extends Object
implements GovernanceRuleRepository

Field Summary

Fields inherited from interface org.apache.dubbo.rpc.cluster.governance.GovernanceRuleRepository

DEFAULT_GROUP

Constructor Summary

Constructors

Constructor	Description
DefaultGovernanceRuleRepositoryImpl(org.apache.dubbo.rpc.model.ModuleModel moduleModel)

Method Summary

Modifier and Type	Method	Description
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.
String	getRule(String key, String group, long timeout)	Get the governance rule mapped to the given key and the given group.
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.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.dubbo.rpc.cluster.governance.GovernanceRuleRepository

addListener, getRule, removeListener

Constructor Details

DefaultGovernanceRuleRepositoryImpl

public DefaultGovernanceRuleRepositoryImpl(org.apache.dubbo.rpc.model.ModuleModel moduleModel)

Method Details

addListener

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

Description copied from interface: GovernanceRuleRepository

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.

Specified by:

addListener in interface GovernanceRuleRepository

Parameters:

key - the key to represent a configuration

group - the group where the key belongs to

listener - configuration listener

removeListener

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

Description copied from interface: GovernanceRuleRepository

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

Specified by:

removeListener in interface GovernanceRuleRepository

Parameters:

key - the key to represent a configuration

group - the group where the key belongs to

listener - configuration listener

getRule

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

Description copied from interface: GovernanceRuleRepository

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.

Specified by:

getRule in interface GovernanceRuleRepository

Parameters:

key - the key to represent a configuration

group - the group where the key belongs to

timeout - timeout value for fetching the target config

Returns:

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

Throws:

IllegalStateException