fish.payara.microprofile.faulttolerance.state.StateTime Maven / Gradle / Ivy
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package fish.payara.microprofile.faulttolerance.state;
import java.io.Serializable;
import java.time.ZonedDateTime;
import java.time.temporal.ChronoUnit;
import java.util.concurrent.atomic.AtomicLong;
/**
* Represents the state its time amount and since when this is in charge.
* @author Sven Diedrichsen
*/
class StateTime implements Serializable {
private static final long serialVersionUID = 1;
private final CircuitBreakerState.CircuitState state;
private ZonedDateTime since;
private final AtomicLong nanos;
StateTime(CircuitBreakerState.CircuitState state) {
this.state = state;
this.since = ZonedDateTime.now();
this.nanos = new AtomicLong(0);
}
/**
* State that this represents.
*
* @return The state.
*/
CircuitBreakerState.CircuitState state() {
return this.state;
}
/**
* True if this StateTime represents the provided {@link CircuitBreakerState.CircuitState}
*
* @param state The state to compare to.
* @return State equals.
*/
boolean is(CircuitBreakerState.CircuitState state) {
return this.state.equals(state);
}
/**
* The current sum of nanos.
*
* @return Sum of nanos.
*/
long nanos() {
return nanos.get();
}
/**
* Updates the sum of nanos.
*
* @return The updates sum of nanos
*/
long update() {
ZonedDateTime now = ZonedDateTime.now();
long result = this.nanos.addAndGet(ChronoUnit.NANOS.between(this.since, now));
this.since = now;
return result;
}
/**
* Sets the time for the state to now.
*/
void reset() {
this.since = ZonedDateTime.now();
}
}