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 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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// Portions Copyright [2018] [Payara Foundation and/or its affiliates]

package com.sun.ejb.containers;

import org.glassfish.api.naming.NamespacePrefixes;
import org.glassfish.api.naming.NamedNamingObjectProxy;
import org.glassfish.api.invocation.ComponentInvocation;

import com.sun.ejb.EjbInvocation;

import org.jvnet.hk2.annotations.Service;

import javax.naming.NamingException;

/**
 * Proxy for creating TimerService instances when requested by lookup or injection.
 * NamingManager will call the handle() method when the JNDI name is looked up.
 * Will return the instance that corresponds to the known name.
 *
 * @author Marina Vatkina
 */
@Service
@NamespacePrefixes(TimerServiceNamingProxy.EJB_TIMER_SERVICE)
public class TimerServiceNamingProxy 
        implements NamedNamingObjectProxy {

    static final String EJB_TIMER_SERVICE = "java:comp/TimerService";

    @Override
    public Object handle(String name) throws NamingException {

        if (EJB_TIMER_SERVICE.equals(name)) {
            return getTimerServiceWrapper();
        }
        return null;
    }

    private Object getTimerServiceWrapper() {

        // Cannot store EjbContainerUtilImpl.getInstance() in an instance 
        // variable because it shouldn't be accessed before EJB container 
        // is initialized. 
        // NamedNamingObjectProxy is initialized on the first lookup.

        ComponentInvocation currentInv = 
                EjbContainerUtilImpl.getInstance().getCurrentInvocation();

        if (currentInv == null) {
            throw new IllegalStateException("no current invocation");
        } else if (currentInv.getInvocationType()
                != ComponentInvocation.ComponentInvocationType.EJB_INVOCATION) {
            throw new IllegalStateException("Illegal invocation type for EJB Context : "
                    + currentInv.getInvocationType());
        }

        return EJBTimerService.getEJBTimerServiceWrapper(
                (EJBContextImpl) ((EjbInvocation) currentInv).context
        );
    }
}