Alex Liroyd created CAMEL-15928:
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Summary: TimeoutException does not trigger Resilience4j circuit
breaker
Key: CAMEL-15928
URL: https://issues.apache.org/jira/browse/CAMEL-15928
Project: Camel
Issue Type: Bug
Components: came-core, camel-core-engine, eip
Affects Versions: 3.4.4
Reporter: Alex Liroyd
Attachments: hot_fix.diff
Currently Timeout exceptions does not trigger circuit breaker. But they should.
I don't want to continue spam my server, if it slightly started dying.
I tried to hot-fix in the next way - [^hot_fix.diff]
The idea behind patch is next. Currently we wrap our call with circuit breaker
and only after that with time limiter. So, circuit breaker doesn't know
anything about time-outs.
And basically I do opposite - initially wrap call with time limiter and only
after that, wrap it with circuit breaker. So circuit breaker will aware about
time-out exception and can react properly.
The issue which I have afterward, that, for cases when circuit breaker was
open, I started receiving blank 200 OK response.
I tried to fix it by removing recover(fallbackTask) part at all:
{code:java}
Try.ofCallable(task).recover(fallbackTask).andFinally(() ->
callback.done(false)).get();
{code}
And seems like it works fine. But tests are failing, and I'm not sure how
exactly it should be fixed.
Also another fix, which seems like works fine and tests are not failing:
CircuitBreakerFallbackTask
{code:java}
} else if (throwable instanceof CallNotPermittedException) {
// the circuit breaker triggered a call rejected
exchange.setProperty(CircuitBreakerConstants.RESPONSE_SUCCESSFUL_EXECUTION,
false);
exchange.setProperty(CircuitBreakerConstants.RESPONSE_FROM_FALLBACK, false);
exchange.setProperty(CircuitBreakerConstants.RESPONSE_SHORT_CIRCUITED,
true);
exchange.setProperty(CircuitBreakerConstants.RESPONSE_REJECTED, true);
throw RuntimeExchangeException.wrapRuntimeException(throwable); // new line
of code
//return exchange; // old code
{code}
Please, assist.
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