io.smallrye.faulttolerance.core.Invocation Maven / Gradle / Ivy
package io.smallrye.faulttolerance.core;
import static io.smallrye.faulttolerance.core.CoreLogger.LOG;
import java.util.concurrent.Callable;
/**
* A "sentinel" fault tolerance strategy that does no processing, it only invokes the guarded {@link Callable}.
* This is supposed to be used as the last fault tolerance stragegy in a chain.
*
* There's only one instance of this class, accessible using {@link #invocation()}.
*/
public final class Invocation implements FaultToleranceStrategy {
private static final Invocation INSTANCE = new Invocation<>();
@SuppressWarnings("unchecked")
public static Invocation invocation() {
return (Invocation) INSTANCE;
}
private Invocation() {
// avoid instantiation
}
@Override
public V apply(InvocationContext ctx) throws Exception {
LOG.trace("Guarded method invocation started");
try {
return ctx.call();
} finally {
LOG.trace("Guarded method invocation finished");
}
}
}