Package org.glassfish.ejb

Source Code of org.glassfish.ejb.EjbSniffer

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package org.glassfish.ejb;

import org.glassfish.internal.deployment.GenericSniffer;
import com.sun.enterprise.module.Module;
import com.sun.enterprise.module.ModuleDefinition;
import com.sun.enterprise.module.common_impl.DirectoryBasedRepository;
import com.sun.enterprise.module.common_impl.AbstractModulesRegistryImpl;
import com.sun.hk2.component.InhabitantsParser;

import org.glassfish.api.deployment.archive.ReadableArchive;

import org.jvnet.hk2.annotations.Scoped;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.annotations.Inject;
import org.jvnet.hk2.component.Singleton;
import org.jvnet.hk2.component.Habitat;

import java.io.IOException;
import java.io.File;
import java.util.logging.Logger;
import java.util.Collection;
import java.util.List;
import java.util.ArrayList;
import java.lang.annotation.Annotation;

/**
* Implementation of the Sniffer for the Ejb container.
*
* @author Mahesh Kannan
*/
@Service(name="Ejb")
@Scoped(Singleton.class)
public class EjbSniffer  extends GenericSniffer {

    @Inject
    Habitat habitat;   

    private static final Class[]  ejbAnnotations = new Class[] {
            javax.ejb.Stateless.class, javax.ejb.Stateful.class,
            javax.ejb.MessageDriven.class, javax.ejb.Singleton.class };

    public EjbSniffer() {
        this("ejb", "META-INF/ejb-jar.xml", null);
    }
   
    public EjbSniffer(String containerName, String appStigma, String urlPattern) {
        super(containerName, appStigma, urlPattern);
    }   

    final String[] containers = {
            "org.glassfish.ejb.startup.EjbContainerStarter",
    };
       
    public String[] getContainersNames() {
        return containers;
    }

        @Override
     public Module[] setup(String containerHome, Logger logger) throws IOException {

            final String ejbContainerName = "org.glassfish.main.ejb.ejb-container";
            Collection<Module> modules = modulesRegistry.getModules(ejbContainerName);
            if (modules.isEmpty()) {

                // let's see if I have a ejb directory since we started the VM
                File ejbLib = null;
                if (containerHome != null) {
                    ejbLib = new File(containerHome);
                }
                if (!ejbLib.exists()) {
                    // I am throwing the towel here
                    throw new IOException("EJB Container not installed");
                }
                //}
                DirectoryBasedRepository ejb = new DirectoryBasedRepository("ejb", ejbLib);
                ejb.initialize();
                modulesRegistry.addRepository(ejb);

                InhabitantsParser parser = new InhabitantsParser(habitat);
                for (ModuleDefinition md : ejb.findAll()) {
                    Module module = modulesRegistry.makeModuleFor(md.getName(), md.getVersion());
                    if (module != null) {
                        ((AbstractModulesRegistryImpl) modulesRegistry).parseInhabitants(module, "default", parser);
                    }
                }

                modules = modulesRegistry.getModules(ejbContainerName);
            }
            if (modules.size() == 1) {
                return modules.toArray(new Module[1]);
            } else {
                throw new IOException("Cannot find ejb module from the module's repositories");
            }

        }

    /**
     * Returns true if the passed file or directory is recognized by this
     * instance.
     *
     * @param location the file or directory to explore
     * @param loader class loader for this application
     * @return true if this sniffer handles this application type
     */
    public boolean handles(ReadableArchive location, ClassLoader loader) {
        boolean result = super.handles(location, loader);    //Check ejb-jar.xml

        if (result == false) {
            try {
                result = location.exists("META-INF/sun-ejb-jar.xml") ||
                    location.exists("META-INF/glassfish-ejb-jar.xml");
            } catch (IOException ioe) {
                // Ignore
            }
        }

        if (result == false) {
            try {
                result = location.exists("WEB-INF/ejb-jar.xml");
            } catch (IOException ioEx) {
                //TODO
            }
        }

        return result;
    }

    @Override
    public Class<? extends Annotation>[] getAnnotationTypes() {
        return ejbAnnotations;
    }

    /**
     * @return whether this sniffer should be visible to user
     *
     */
    public boolean isUserVisible() {
        return true;
    }

    /**
     * @return the set of the sniffers that should not co-exist for the
     * same module. For example, ejb and connector sniffers should not
     * be returned in the sniffer list for a certain module.
     * This method will be used to validate and filter the retrieved sniffer
     * lists for a certain module
     *
     */
    public String[] getIncompatibleSnifferTypes() {
        return new String[] {"connector"};
    }

    private static final List<String> deploymentConfigurationPaths =
            initDeploymentConfigurationPaths();

    private static List<String> initDeploymentConfigurationPaths() {
        final List<String> result = new ArrayList<String>();
        result.add("META-INF/ejb-jar.xml");
        result.add("META-INF/sun-ejb-jar.xml");
        result.add("META-INF/glassfish-ejb-jar.xml");
        result.add("META-INF/weblogic-ejb-jar.xml");
        return result;
    }

    /**
     * Returns the descriptor paths that might exist at an ejb app.
     *
     * @return list of the deployment descriptor paths
     */
    @Override
    protected List<String> getDeploymentConfigurationPaths() {
        return deploymentConfigurationPaths;
    }

}
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