org.apache.dubbo.rpc.cluster.router.tag

Class TagRouter

java.lang.Object

org.apache.dubbo.rpc.cluster.router.AbstractRouter

org.apache.dubbo.rpc.cluster.router.tag.TagRouter

All Implemented Interfaces:

Comparable<Router>, EventListener, org.apache.dubbo.common.config.configcenter.ConfigurationListener, Router

public class TagRouter
extends AbstractRouter
implements org.apache.dubbo.common.config.configcenter.ConfigurationListener

TagRouter, "application.tag-router"

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Fields inherited from interface org.apache.dubbo.rpc.cluster.Router

DEFAULT_PRIORITY

Constructor Summary

Constructors

Constructor and Description
TagRouter(org.apache.dubbo.common.URL url)

Method Summary

Modifier and Type	Method and Description
org.apache.dubbo.common.URL	getUrl() Get the router url.
boolean	isForce() To decide whether this router should take effect when none of the invoker can match the router rule, which means the Router.route(List, URL, Invocation) would be empty.
boolean	isRuntime() To decide whether this router need to execute every time an RPC comes or should only execute when addresses or rule change.
<T> void	notify(List<Invoker<T>> invokers) Notify the router the invoker list.
void	process(org.apache.dubbo.common.config.configcenter.ConfigChangedEvent event)
<T> List<Invoker<T>>	route(List<Invoker<T>> invokers, org.apache.dubbo.common.URL url, Invocation invocation) Filter invokers with current routing rule and only return the invokers that comply with the rule.
void	setApplication(String app)

Methods inherited from class org.apache.dubbo.rpc.cluster.router.AbstractRouter

getPriority, setForce, setPriority, setUrl

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.Router

compareTo

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

TagRouter

public TagRouter(org.apache.dubbo.common.URL url)

Method Detail

process

public void process(org.apache.dubbo.common.config.configcenter.ConfigChangedEvent event)

Specified by:

process in interface org.apache.dubbo.common.config.configcenter.ConfigurationListener

getUrl

public org.apache.dubbo.common.URL getUrl()

Description copied from interface: Router

Get the router url.

Specified by:

getUrl in interface Router

Overrides:

getUrl in class AbstractRouter

Returns:

url

route

public <T> List<Invoker<T>> route(List<Invoker<T>> invokers,
                                  org.apache.dubbo.common.URL url,
                                  Invocation invocation)
                           throws RpcException

Description copied from interface: Router

Filter invokers with current routing rule and only return the invokers that comply with the rule.

Specified by:

route in interface Router

Parameters:

invokers - invoker list

url - refer url

invocation - invocation

Returns:

routed invokers

Throws:

RpcException

isRuntime

public boolean isRuntime()

Description copied from interface: Router

To decide whether this router need to execute every time an RPC comes or should only execute when addresses or rule change.

Specified by:

isRuntime in interface Router

Overrides:

isRuntime in class AbstractRouter

Returns:

true if the router need to execute every time.

isForce

public boolean isForce()

Description copied from interface: Router

To decide whether this router should take effect when none of the invoker can match the router rule, which means the Router.route(List, URL, Invocation) would be empty. Most of time, most router implementation would default this value to false.

Specified by:

isForce in interface Router

Overrides:

isForce in class AbstractRouter

Returns:

true to execute if none of invokers matches the current router

setApplication

public void setApplication(String app)

notify

public <T> void notify(List<Invoker<T>> invokers)

Description copied from interface: Router

Notify the router the invoker list. Invoker list may change from time to time. This method gives the router a chance to prepare before Router.route(List, URL, Invocation) gets called.

Specified by:

notify in interface Router

Type Parameters:

T - invoker's type

Parameters:

invokers - invoker list