org.apache.flink.streaming.api.functions.async

类 RichAsyncFunction<IN,OUT>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.streaming.api.functions.async.RichAsyncFunction<IN,OUT>

类型参数:

IN - The type of the input elements.

OUT - The type of the returned elements.

所有已实现的接口:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction, AsyncFunction<IN,OUT>

@PublicEvolving
public abstract class RichAsyncFunction<IN,OUT>
extends org.apache.flink.api.common.functions.AbstractRichFunction
implements AsyncFunction<IN,OUT>

Rich variant of the AsyncFunction. As a RichFunction, it gives access to the RuntimeContext and provides setup and teardown methods: RichFunction.open(org.apache.flink.configuration.Configuration) and RichFunction.close().

State related apis in RuntimeContext are not supported yet because the key may get changed while accessing states in the working thread.

IterationRuntimeContext.getIterationAggregator(String) is not supported since the aggregator may be modified by multiple threads.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
RichAsyncFunction()

方法概要

限定符和类型	方法和说明
abstract void	asyncInvoke(IN input, ResultFuture<OUT> resultFuture) Trigger async operation for each stream input.
void	setRuntimeContext(org.apache.flink.api.common.functions.RuntimeContext runtimeContext)

从类继承的方法 org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.streaming.api.functions.async.AsyncFunction

timeout

构造器详细资料

RichAsyncFunction

public RichAsyncFunction()

方法详细资料

setRuntimeContext

public void setRuntimeContext(org.apache.flink.api.common.functions.RuntimeContext runtimeContext)

指定者:

setRuntimeContext 在接口中 org.apache.flink.api.common.functions.RichFunction

覆盖:

setRuntimeContext 在类中 org.apache.flink.api.common.functions.AbstractRichFunction

asyncInvoke

public abstract void asyncInvoke(IN input,
                                 ResultFuture<OUT> resultFuture)
                          throws Exception

从接口复制的说明: AsyncFunction

Trigger async operation for each stream input.

指定者:

asyncInvoke 在接口中 AsyncFunction<IN,OUT>

参数:

input - element coming from an upstream task

resultFuture - to be completed with the result data

抛出:

Exception - in case of a user code error. An exception will make the task fail and trigger fail-over process.