zipkin2

Class Call.Base<V>

java.lang.Object

zipkin2.Call<V>

zipkin2.Call.Base<V>

All Implemented Interfaces:

Cloneable

Enclosing class:

Call<V>

public abstract static class Call.Base<V>
extends Call<V>

Nested Class Summary

Nested classes/interfaces inherited from class zipkin2.Call

Call.Base<V>, Call.ErrorHandler<V>, Call.FlatMapper<V1,V2>, Call.Mapper<V1,V2>

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Base()

Method Summary

Modifier and Type	Method and Description
void	cancel() Requests to cancel this call, even if some implementations may not support it.
protected void	doCancel()
protected abstract void	doEnqueue(Callback<V> callback)
protected abstract V	doExecute()
protected boolean	doIsCanceled()
void	enqueue(Callback<V> callback) Invokes a request asynchronously, signaling the callback when complete.
V	execute() Invokes a request, returning a success value or propagating an error to the caller.
boolean	isCanceled() Returns true if Call.cancel() was called.

Methods inherited from class zipkin2.Call

clone, create, emptyList, flatMap, handleError, map, propagateIfFatal

Methods inherited from class java.lang.Object

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

Constructor Detail

Base

protected Base()

Method Detail

execute

public final V execute()
                throws IOException

Description copied from class: Call

Invokes a request, returning a success value or propagating an error to the caller. Invoking this more than once will result in an error. To repeat a call, make a copy with Call.clone().

Eventhough this is a blocking call, implementations may honor calls to Call.cancel() from a different thread.

Specified by:

execute in class Call<V>

Returns:

a success value. Null is unexpected, except when V is Void.

Throws:

IOException

doExecute

protected abstract V doExecute()
                        throws IOException

Throws:

IOException

enqueue

public final void enqueue(Callback<V> callback)

Description copied from class: Call

Invokes a request asynchronously, signaling the callback when complete. Invoking this more than once will result in an error. To repeat a call, make a copy with Call.clone().

Specified by:

enqueue in class Call<V>

doEnqueue

protected abstract void doEnqueue(Callback<V> callback)

cancel

public final void cancel()

Description copied from class: Call

Requests to cancel this call, even if some implementations may not support it. For example, a blocking call is sometimes not cancelable.

Specified by:

cancel in class Call<V>

doCancel

protected void doCancel()

isCanceled

public final boolean isCanceled()

Description copied from class: Call

Returns true if Call.cancel() was called.

Calls can fail before being canceled, so true does always mean cancelation caused a call to fail. That said, successful cancellation does result in a failure.

Specified by:

isCanceled in class Call<V>

doIsCanceled

protected boolean doIsCanceled()