Package io.helidon.microprofile.faulttolerance

Class FaultToleranceCommand

java.lang.Object

com.netflix.hystrix.HystrixCommand<Object>

io.helidon.microprofile.faulttolerance.FaultToleranceCommand

All Implemented Interfaces:

com.netflix.hystrix.HystrixExecutable<Object>, com.netflix.hystrix.HystrixInvokable<Object>, com.netflix.hystrix.HystrixInvokableInfo<Object>, com.netflix.hystrix.HystrixObservable<Object>

public class FaultToleranceCommand
extends com.netflix.hystrix.HystrixCommand<Object>

Class FaultToleranceCommand.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	com.netflix.hystrix.AbstractCommand.CommandState
protected static class	com.netflix.hystrix.AbstractCommand.ThreadState
protected static class	com.netflix.hystrix.AbstractCommand.TimedOutStatus

Nested classes/interfaces inherited from class com.netflix.hystrix.HystrixCommand

com.netflix.hystrix.HystrixCommand.Setter

Field Summary

Fields

Modifier and Type	Field and Description
protected com.netflix.hystrix.HystrixCircuitBreaker	circuitBreaker
protected static ConcurrentHashMap<com.netflix.hystrix.HystrixCommandKey,Boolean>	commandContainsFallback
protected com.netflix.hystrix.HystrixCommandGroupKey	commandGroup
protected long	commandStartTimestamp
protected AtomicReference<com.netflix.hystrix.AbstractCommand.CommandState>	commandState
protected com.netflix.hystrix.strategy.concurrency.HystrixConcurrencyStrategy	concurrencyStrategy
protected com.netflix.hystrix.HystrixRequestLog	currentRequestLog
protected rx.functions.Action0	endCurrentThreadExecutingCommand
protected com.netflix.hystrix.strategy.eventnotifier.HystrixEventNotifier	eventNotifier
protected com.netflix.hystrix.strategy.executionhook.HystrixCommandExecutionHook	executionHook
protected com.netflix.hystrix.ExecutionResult	executionResult
protected com.netflix.hystrix.ExecutionResult	executionResultAtTimeOfCancellation
protected com.netflix.hystrix.AbstractCommand.TryableSemaphore	executionSemaphoreOverride
protected static ConcurrentHashMap<String,com.netflix.hystrix.AbstractCommand.TryableSemaphore>	executionSemaphorePerCircuit
protected com.netflix.hystrix.AbstractCommand.TryableSemaphore	fallbackSemaphoreOverride
protected static ConcurrentHashMap<String,com.netflix.hystrix.AbstractCommand.TryableSemaphore>	fallbackSemaphorePerCircuit
protected AtomicReference<com.netflix.hystrix.AbstractCommand.TimedOutStatus>	isCommandTimedOut
protected boolean	isResponseFromCache
protected com.netflix.hystrix.HystrixCommandMetrics	metrics
protected com.netflix.hystrix.HystrixCommandProperties	properties
protected com.netflix.hystrix.HystrixRequestCache	requestCache
protected com.netflix.hystrix.HystrixThreadPool	threadPool
protected com.netflix.hystrix.HystrixThreadPoolKey	threadPoolKey
protected AtomicReference<com.netflix.hystrix.AbstractCommand.ThreadState>	threadState
protected AtomicReference<Reference<com.netflix.hystrix.util.HystrixTimer.TimerListener>>	timeoutTimer

Constructor Summary

Constructors

Constructor and Description
FaultToleranceCommand(String commandKey, io.helidon.microprofile.faulttolerance.MethodIntrospector introspector, javax.interceptor.InvocationContext context) Constructor.

Method Summary

Modifier and Type	Method and Description
protected Throwable	decomposeException(Exception arg0)
Object	execute() Executes this command returning a result or throwing an exception.
protected String	getCacheKey()
protected Exception	getExceptionFromThrowable(Throwable arg0)
protected com.netflix.hystrix.AbstractCommand.TryableSemaphore	getExecutionSemaphore()
protected com.netflix.hystrix.AbstractCommand.TryableSemaphore	getFallbackSemaphore()
protected String	getLogMessagePrefix()
protected void	handleThreadEnd(com.netflix.hystrix.AbstractCommand<R> arg0)
protected boolean	isRequestCachingEnabled()
Object	run() Code to run as part of this command.
protected boolean	shouldNotBeWrapped(Throwable arg0)
protected boolean	shouldOutputOnNextEvents()

Methods inherited from class com.netflix.hystrix.HystrixCommand

commandIsScalar, getExecutionObservable, getFallback, getFallbackMethodName, getFallbackObservable, isFallbackUserDefined, queue

Methods inherited from class java.lang.Object

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

Field Detail

circuitBreaker

protected final com.netflix.hystrix.HystrixCircuitBreaker circuitBreaker

threadPool

protected final com.netflix.hystrix.HystrixThreadPool threadPool

threadPoolKey

protected final com.netflix.hystrix.HystrixThreadPoolKey threadPoolKey

properties

protected final com.netflix.hystrix.HystrixCommandProperties properties

metrics

protected final com.netflix.hystrix.HystrixCommandMetrics metrics

commandGroup

protected final com.netflix.hystrix.HystrixCommandGroupKey commandGroup

eventNotifier

protected final com.netflix.hystrix.strategy.eventnotifier.HystrixEventNotifier eventNotifier

concurrencyStrategy

protected final com.netflix.hystrix.strategy.concurrency.HystrixConcurrencyStrategy concurrencyStrategy

executionHook

protected final com.netflix.hystrix.strategy.executionhook.HystrixCommandExecutionHook executionHook

fallbackSemaphoreOverride

protected final com.netflix.hystrix.AbstractCommand.TryableSemaphore fallbackSemaphoreOverride

fallbackSemaphorePerCircuit

protected static final ConcurrentHashMap<String,com.netflix.hystrix.AbstractCommand.TryableSemaphore> fallbackSemaphorePerCircuit

executionSemaphoreOverride

protected final com.netflix.hystrix.AbstractCommand.TryableSemaphore executionSemaphoreOverride

executionSemaphorePerCircuit

protected static final ConcurrentHashMap<String,com.netflix.hystrix.AbstractCommand.TryableSemaphore> executionSemaphorePerCircuit

timeoutTimer

protected final AtomicReference<Reference<com.netflix.hystrix.util.HystrixTimer.TimerListener>> timeoutTimer

commandState

protected AtomicReference<com.netflix.hystrix.AbstractCommand.CommandState> commandState

threadState

protected AtomicReference<com.netflix.hystrix.AbstractCommand.ThreadState> threadState

executionResult

protected volatile com.netflix.hystrix.ExecutionResult executionResult

isResponseFromCache

protected volatile boolean isResponseFromCache

executionResultAtTimeOfCancellation

protected volatile com.netflix.hystrix.ExecutionResult executionResultAtTimeOfCancellation

commandStartTimestamp

protected volatile long commandStartTimestamp

isCommandTimedOut

protected final AtomicReference<com.netflix.hystrix.AbstractCommand.TimedOutStatus> isCommandTimedOut

endCurrentThreadExecutingCommand

protected volatile rx.functions.Action0 endCurrentThreadExecutingCommand

requestCache

protected final com.netflix.hystrix.HystrixRequestCache requestCache

currentRequestLog

protected final com.netflix.hystrix.HystrixRequestLog currentRequestLog

commandContainsFallback

protected static ConcurrentHashMap<com.netflix.hystrix.HystrixCommandKey,Boolean> commandContainsFallback

Constructor Detail

FaultToleranceCommand

public FaultToleranceCommand(String commandKey,
                             io.helidon.microprofile.faulttolerance.MethodIntrospector introspector,
                             javax.interceptor.InvocationContext context)

Constructor. Specify a thread pool key if a @Bulkhead is specified on the method. A unique thread pool key will enable setting limits for this command only based on the Bulkhead properties.

Parameters:

commandKey - The command key.

introspector - The method introspector.

context - CDI invocation context.

Method Detail

run

public Object run()
           throws Exception

Code to run as part of this command. Called from superclass.

Specified by:

run in class com.netflix.hystrix.HystrixCommand<Object>

Returns:

Result of command.

Throws:

Exception - If an error occurs.

execute

public Object execute()

Executes this command returning a result or throwing an exception.

Specified by:

execute in interface com.netflix.hystrix.HystrixExecutable<Object>

Overrides:

execute in class com.netflix.hystrix.HystrixCommand<Object>

Returns:

The result.

Throws:

RuntimeException - If something goes wrong.

shouldNotBeWrapped

protected boolean shouldNotBeWrapped(Throwable arg0)

handleThreadEnd

protected void handleThreadEnd(com.netflix.hystrix.AbstractCommand<R> arg0)

shouldOutputOnNextEvents

protected boolean shouldOutputOnNextEvents()

getFallbackSemaphore

protected com.netflix.hystrix.AbstractCommand.TryableSemaphore getFallbackSemaphore()

getExecutionSemaphore

protected com.netflix.hystrix.AbstractCommand.TryableSemaphore getExecutionSemaphore()

decomposeException

protected Throwable decomposeException(Exception arg0)

getCacheKey

protected String getCacheKey()

isRequestCachingEnabled

protected boolean isRequestCachingEnabled()

getLogMessagePrefix

protected String getLogMessagePrefix()

getExceptionFromThrowable

protected Exception getExceptionFromThrowable(Throwable arg0)