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// Portions Copyright [2018] [Payara Foundation and/or its affiliates]
package org.glassfish.webservices;

import java.rmi.Remote;

import org.glassfish.api.invocation.ComponentInvocation;
import org.glassfish.ejb.api.EJBInvocation;
import org.glassfish.ejb.api.EjbEndpointFacade;
import org.glassfish.internal.api.Globals;

import com.sun.enterprise.deployment.WebServiceEndpoint;
import com.sun.xml.rpc.spi.runtime.Tie;

/**
 * Runtime dispatch information about one ejb web service endpoint. This class must support
 * concurrent access, since a single instance will be used for all web service invocations through
 * the same ejb endpoint.
 *
 * @author Kenneth Saks
 */
public class Ejb2RuntimeEndpointInfo extends EjbRuntimeEndpointInfo {

    private Class tieClass;

    // Lazily instantiated and cached due to overhead of initialization.
    private Tie tieInstance;

    private Object serverAuthConfig;

    public Ejb2RuntimeEndpointInfo(WebServiceEndpoint webServiceEndpoint, EjbEndpointFacade ejbContainer, Object servant, Class tie) {

        super(webServiceEndpoint, ejbContainer, servant);
        tieClass = tie;

        if (Globals.getDefaultHabitat() != null) {
            SecurityService securityService = Globals.get(SecurityService.class);
            if (securityService != null) {
                serverAuthConfig = securityService.mergeSOAPMessageSecurityPolicies(webServiceEndpoint.getMessageSecurityBinding());
            }
        }

    }

    public AdapterInvocationInfo getHandlerImplementor() throws Exception {

        ComponentInvocation invocation = container.startInvocation();
        AdapterInvocationInfo adapterInvocationInfo = new AdapterInvocationInfo();
        adapterInvocationInfo.setInv(invocation);

        synchronized (this) {
            if (tieClass == null) {
                tieClass = Thread.currentThread().getContextClassLoader().loadClass(getEndpoint().getTieClassName());
            }
            if (tieInstance == null) {
                tieInstance = (Tie) tieClass.newInstance();
                tieInstance.setTarget((Remote) webServiceEndpointServant);
            }
        }

        EJBInvocation.class.cast(invocation).setWebServiceTie(tieInstance);
        adapterInvocationInfo.setHandler(tieInstance);

        return adapterInvocationInfo;
    }

    /**
     * Called after attempt to handle message. This is coded defensively so we attempt to clean up no
     * matter how much progress we made in getImplementor. One important thing is to complete the
     * invocation manager preInvoke().
     */
    @Override
    public void releaseImplementor(ComponentInvocation inv) {
        container.endInvocation(inv);
    }

    @Override
    public EjbMessageDispatcher getMessageDispatcher() {
        // message dispatcher is stateless, no need to synchronize, worse
        // case, we'll create too many.
        if (messageDispatcher == null) {
            messageDispatcher = new EjbWebServiceDispatcher();
        }

        return messageDispatcher;
    }

    public Object getServerAuthConfig() {
        return serverAuthConfig;
    }

}