org.apache.dubbo.rpc.cluster.router.script

Class ScriptStateRouter<T>

java.lang.Object

org.apache.dubbo.rpc.cluster.router.state.AbstractStateRouter<T>

org.apache.dubbo.rpc.cluster.router.script.ScriptStateRouter<T>

All Implemented Interfaces:

Comparable<StateRouter<T>>, StateRouter<T>

public class ScriptStateRouter<T>
extends AbstractStateRouter<T>

ScriptRouter

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Fields inherited from interface org.apache.dubbo.rpc.cluster.router.state.StateRouter

DEFAULT_PRIORITY

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
boolean	isForce() To decide whether this router should take effect when none of the invoker can match the router rule, which means the StateRouter.route(BitList, URL, Invocation, boolean) 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.
StateRouterResult<Invoker<T>>	route(BitList<Invoker<T>> invokers, org.apache.dubbo.common.URL url, Invocation invocation, boolean needToPrintMessage) ** This method can return the state of whether routerChain needed to continue route.

Methods inherited from class org.apache.dubbo.rpc.cluster.router.state.AbstractStateRouter

getPriority, getRuleRepository, getUrl, notify, 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.state.StateRouter

compareTo, stop

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

ScriptStateRouter

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

Method Detail

route

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

Description copied from interface: StateRouter

** This method can return the state of whether routerChain needed to continue route. ** Filter invokers with current routing rule and only return the invokers that comply with the rule. Caching address lists in BitMap mode improves routing performance.

Parameters:

invokers - invoker bit list

url - refer url

invocation - invocation

needToPrintMessage - whether to print router state. Such as `use router branch a`.

Returns:

state with route result

Throws:

RpcException

isRuntime

public boolean isRuntime()

Description copied from interface: StateRouter

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 StateRouter<T>

Overrides:

isRuntime in class AbstractStateRouter<T>

Returns:

true if the router need to execute every time.

isForce

public boolean isForce()

Description copied from interface: StateRouter

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

Specified by:

isForce in interface StateRouter<T>

Overrides:

isForce in class AbstractStateRouter<T>

Returns:

true to execute if none of invokers matches the current router