org.apache.dubbo.rpc.cluster

接口 Router

所有超级接口:

Comparable<Router>

所有已知实现类:

AbstractRouter, AddressInvokersSelector, AppRouter, ConditionRouter, ListenableRouter, MockInvokersSelector, ScriptRouter, ServiceRouter, TagRouter

public interface Router
extends Comparable<Router>

Router. (SPI, Prototype, ThreadSafe)

Routing

另请参阅:

Cluster.join(Directory), Directory.list(Invocation)

字段概要

字段

限定符和类型	字段和说明
static int	DEFAULT_PRIORITY

方法概要

限定符和类型	方法和说明
default int	compareTo(Router o)
int	getPriority() Router's priority, used to sort routers.
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 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.
default <T> void	notify(List<Invoker<T>> invokers) Notify the router the invoker list.
<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.

字段详细资料

DEFAULT_PRIORITY

static final int DEFAULT_PRIORITY

另请参阅:

常量字段值

方法详细资料

getUrl

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

Get the router url.

返回:

url

route

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

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

参数:

invokers - invoker list

url - refer url

invocation - invocation

返回:

routed invokers

抛出:

RpcException

notify

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

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

类型参数:

T - invoker's type

参数:

invokers - invoker list

isRuntime

boolean isRuntime()

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

返回:

true if the router need to execute every time.

isForce

boolean isForce()

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

返回:

true to execute if none of invokers matches the current router

getPriority

int getPriority()

Router's priority, used to sort routers.

返回:

router's priority

compareTo

default int compareTo(Router o)

指定者:

compareTo 在接口中 Comparable<Router>