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package dk.thoerup.circuitbreaker; |
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import java.util.concurrent.atomic.AtomicLong; |
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import dk.thoerup.circuitbreaker.config.BreakerConfig; |
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public final class OpenState implements CircuitBreakerState { |
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final private AtomicLong tripTime = new AtomicLong(0); |
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BreakerConfig config; |
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public void setTimeout(BreakerConfig config) { |
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this.config = config; |
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} |
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public void preInvoke(CircuitBreaker circuitBreaker) throws Exception |
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{ |
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long now = System.currentTimeMillis(); |
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long elapsed = now - tripTime.get(); |
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if(elapsed > config.getTimeout()) |
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{ |
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circuitBreaker.attemptReset(); |
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} |
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else |
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{ |
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throw new CircuitBreakerException("Circuit Breaker is open; calls are failing fast"); |
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} |
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} |
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public void postInvoke(CircuitBreaker circuitBreaker) throws Exception |
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{ |
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// NO OP |
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} |
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public void onError(CircuitBreaker circuitBreaker, Exception t) throws Exception |
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{ |
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// NO OP |
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} |
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void trip() |
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{ |
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long now = System.currentTimeMillis(); |
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tripTime.set(now); |
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} |
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public String getName() { |
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return "Open"; |
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} |
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public long getTimeout() { |
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return config.getTimeout(); |
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} |
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public long getElapsed() { |
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long now = System.currentTimeMillis(); |
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long elapsed = now - tripTime.get(); |
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return elapsed; |
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} |
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} |