com.alibaba.cloud.dubbo.annotation

Annotation Type DubboTransported

@Retention(value=RUNTIME)
 @Target(value={TYPE,FIELD,METHOD,PARAMETER})
 @Documented
public @interface DubboTransported

@DubboTransported annotation indicates that the traditional Spring Cloud Service-to-Service call is transported by Dubbo under the hood, there are two main scenarios:

1. @FeignClient annotated classes:
   If @DubboTransported annotated classes, the invocation of all methods of @FeignClient annotated classes.
   If @DubboTransported annotated methods of @FeignClient annotated classes.
2. @LoadBalanced RestTemplate annotated field, method and parameters

Author:

Mercy

See Also:

FeignClient, LoadBalanced

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
int	actives Maximum active requests allowed, default value is 0.
String	cache Specify cache implementation for service invocation, legal values include: lru, threadlocal, jcache.
String	cluster The cluster of Dubbo transport whose value could be used the placeholder "dubbo.transport.cluster".
int	connections Maximum connections service provider can accept, default value is 0 - connection is shared.
String[]	filter Filters for service invocation.
String[]	listener Listeners for service exporting and unexporting.
String	loadbalance Load balance strategy, legal values include: random, roundrobin, leastactive.
String[]	parameters Customized parameter key-value pair, for example: {key1, value1, key2, value2}.
String	protocol The protocol of Dubbo transport whose value could be used the placeholder "dubbo.transport.protocol".
String	reconnect Whether to reconnect if connection is lost, if not specify, reconnect is enabled by default, and the interval for retry connecting is 2000 ms.
int	retries Service invocation retry times.
int	timeout Timeout value for service invocation, default value is 0.

Element Detail

protocol

public abstract String protocol

The protocol of Dubbo transport whose value could be used the placeholder "dubbo.transport.protocol".

Returns:

the default protocol is "dubbo"

Default:

"${dubbo.transport.protocol:dubbo}"

cluster

public abstract String cluster

The cluster of Dubbo transport whose value could be used the placeholder "dubbo.transport.cluster".

Returns:

the default cluster is "failover"

Default:

"${dubbo.transport.cluster:failover}"

reconnect

public abstract String reconnect

Whether to reconnect if connection is lost, if not specify, reconnect is enabled by default, and the interval for retry connecting is 2000 ms.

Returns:

reconnect time

See Also:

Reference.reconnect()

Default:

"${dubbo.transport.reconnect:2000}"

connections

public abstract int connections

Maximum connections service provider can accept, default value is 0 - connection is shared.

Returns:

maximum connections

See Also:

Reference.connections()

Default:

0

retries

public abstract int retries

Service invocation retry times.

Returns:

retry times

See Also:

Reference.retries()

Default:

2

loadbalance

public abstract String loadbalance

Load balance strategy, legal values include: random, roundrobin, leastactive.

Returns:

load balance strategy

See Also:

Reference.loadbalance()

Default:

"${dubbo.transport.loadbalance:}"

actives

public abstract int actives

Maximum active requests allowed, default value is 0.

Returns:

maximum active requests

See Also:

Reference.actives()

Default:

0

timeout

public abstract int timeout

Timeout value for service invocation, default value is 0.

Returns:

timeout for service invocation

See Also:

Reference.timeout()

Default:

0

cache

public abstract String cache

Specify cache implementation for service invocation, legal values include: lru, threadlocal, jcache.

Returns:

specify cache implementation for service invocation

See Also:

Reference.cache()

Default:

"${dubbo.transport.cache:}"

filter

public abstract String[] filter

Filters for service invocation.

Returns:

filters for service invocation

See Also:

Filter, Reference.filter()

Default:

{}

listener

public abstract String[] listener

Listeners for service exporting and unexporting.

Returns:

listener

See Also:

ExporterListener, Reference.listener()

Default:

{}

parameters

public abstract String[] parameters

Customized parameter key-value pair, for example: {key1, value1, key2, value2}.

Returns:

parameters

See Also:

Reference.parameters()

Default:

{}