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 *
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 *
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
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package fish.payara.micro.cdi.extension.cluster;

import com.sun.enterprise.container.common.impl.util.ClusteredSingletonLookupImplBase;
import static com.sun.enterprise.container.common.spi.ClusteredSingletonLookup.SingletonType.CDI;
import fish.payara.cluster.Clustered;
import static fish.payara.micro.cdi.extension.cluster.ClusterScopeContext.getAnnotation;
import static fish.payara.micro.cdi.extension.cluster.ClusterScopeContext.getBeanName;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReference;
import jakarta.enterprise.inject.spi.Bean;
import jakarta.enterprise.inject.spi.BeanManager;

/**
 * implements CDI-based clustered singleton lookups
 *
 * @author lprimak
 */
public class ClusteredSingletonLookupImpl extends ClusteredSingletonLookupImplBase {
    private final BeanManager beanManager;
    private final AtomicReference sessionKey = new AtomicReference<>();

    public ClusteredSingletonLookupImpl(BeanManager beanManager, String componentId) {
        super(componentId, CDI);
        this.beanManager = beanManager;
    }

    @Override
    public String getClusteredSessionKey() {
        return sessionKey.get();
    }

    void setClusteredSessionKeyIfNotSet(Class beanClass, Clustered clusteredAnnotation) {
        sessionKey.updateAndGet(v -> v != null ? v : makeSessionKey(beanClass, clusteredAnnotation));
    }

    private String makeSessionKey(Class beanClass, Clustered clusteredAnnotation) {
        Set> managedBeans = beanManager.getBeans(beanClass);
        if (managedBeans.size() > 1) {
            throw new IllegalArgumentException("Multiple beans found for " + beanClass);
        }
        if (managedBeans.size() == 1) {
            Bean bean = managedBeans.iterator().next();
            return getBeanName(bean, getAnnotation(beanManager, bean));
        }
        return ClusterScopeContext.firstNonNull(clusteredAnnotation.keyName(), beanClass.getName());
    }
}