com.sun.jersey.server.impl.cdi.CDIComponentProviderFactoryInitializer Maven / Gradle / Ivy
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package com.sun.jersey.server.impl.cdi;
import com.sun.jersey.api.core.ResourceConfig;
import com.sun.jersey.server.impl.InitialContextHelper;
import com.sun.jersey.spi.container.WebApplication;
import com.sun.jersey.spi.container.servlet.WebConfig;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletContext;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Initializes the factory for IoCComponentProvider(s) for CDI beans.
*
* @author [email protected]
* @author robc
*/
public class CDIComponentProviderFactoryInitializer {
private static final Logger LOGGER = Logger.getLogger(CDIComponentProviderFactoryInitializer.class.getName());
private static final String BEAN_MANAGER_CLASS = "javax.enterprise.inject.spi.BeanManager";
private static final String WELD_SERVLET_PACKAGE = "org.jboss.weld.environment.servlet";
public static void initialize(WebConfig wc, ResourceConfig rc, WebApplication wa) {
ServletContext sc = wc.getServletContext();
Object beanManager = lookup(sc);
if (beanManager == null) {
LOGGER.config("The CDI BeanManager is not available. JAX-RS CDI support is disabled.");
return;
}
rc.getSingletons().add(new CDIComponentProviderFactory(beanManager, rc, wa));
LOGGER.info("CDI support is enabled");
}
private static Object lookup(ServletContext sc) {
Object beanManager = null;
beanManager = lookupInJndi("java:comp/BeanManager");
if (beanManager != null) {
return beanManager;
}
// Standard in CDI 1.1
beanManager = lookupInServletContext(sc, BEAN_MANAGER_CLASS);
if (beanManager != null) {
return beanManager;
}
// For older Weld versions
beanManager = lookupInServletContext(sc, WELD_SERVLET_PACKAGE + "." + BEAN_MANAGER_CLASS);
if (beanManager != null) {
return beanManager;
}
return null;
}
private static Object lookupInJndi(String name) {
try {
InitialContext ic = InitialContextHelper.getInitialContext();
if (ic == null) {
return null;
}
Object beanManager = ic.lookup(name);
// Some implementations of InitialContext return null instead of
// throwing NamingException if there is no Object associated with
// the name
if (beanManager == null) {
LOGGER.config("The CDI BeanManager is not available at " + name);
return null;
}
LOGGER.config("The CDI BeanManager is at " + name);
return beanManager;
} catch (NamingException ex) {
LOGGER.log(Level.CONFIG, "The CDI BeanManager is not available at " + name, ex);
}
return null;
}
private static Object lookupInServletContext(ServletContext sc, String name) {
Object beanManager = sc.getAttribute(name);
if (beanManager == null) {
LOGGER.config("The CDI BeanManager is not available at " + name);
return null;
}
LOGGER.config("The CDI BeanManager is at " + name);
return beanManager;
}
}