InfinispanCacheFactory.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2011, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.capedwarf.cache.infinispan;

import org.infinispan.manager.DefaultCacheManager;
import org.infinispan.manager.EmbeddedCacheManager;
import org.kohsuke.MetaInfServices;

import javax.cache.Cache;
import javax.cache.CacheException;
import javax.cache.CacheFactory;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Arrays;
import java.util.Map;
import java.util.Properties;
import java.util.logging.Logger;

/**
 * Infinispan javax.cache factory implementation.
 *
 * @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
 */
@MetaInfServices
public class InfinispanCacheFactory implements CacheFactory {
    private static Logger log = Logger.getLogger(InfinispanCacheFactory.class.getName());
    private static String[] defaultJndiNames = {"java:jboss/infinispan/container/capedwarf", "java:jboss/infinispan/capedwarf", "java:CacheManager/capedwarf"};
    private EmbeddedCacheManager cacheManager;

    public InfinispanCacheFactory() throws IOException {
        try {
            cacheManager = doJNDILookup();
        } catch (Throwable t) {
            log.warning("Failed to do JNDI lookup, using standalone configuration: " + t);
            cacheManager = doStandalone();
        }
    }

    protected EmbeddedCacheManager doJNDILookup() throws IOException {
        Properties jndiProperties = new Properties();
        URL jndiPropertiesURL = getClass().getClassLoader().getResource("jndi.properties");
        if (jndiPropertiesURL != null) {
            InputStream is = jndiPropertiesURL.openStream();
            try {
                jndiProperties.load(is);
            } finally {
                try {
                    is.close();
                } catch (IOException ignored) {
                }
            }
        }

        String jndiNamespace = jndiProperties.getProperty("infinispan.jndi.name");
        Context ctx = null;
        try {
            ctx = new InitialContext(jndiProperties);

            EmbeddedCacheManager manager;
            if (jndiNamespace != null)
                manager = (EmbeddedCacheManager) ctx.lookup(jndiNamespace);
            else
                manager = checkDefaultNames(ctx);

            log.info("Using JNDI found CacheManager: " + manager);
            return manager;
        } catch (NamingException ne) {
            String msg = "Unable to retrieve CacheManager from JNDI [" + jndiNamespace + "]";
            log.info(msg + ": " + ne);
            throw new IOException(msg);
        } finally {
            if (ctx != null) {
                try {
                    ctx.close();
                } catch (NamingException ne) {
                    log.info("Unable to release initial context: " + ne);
                }
            }
        }
    }

    protected EmbeddedCacheManager checkDefaultNames(Context ctx) throws IOException {
        for (String jndiName : defaultJndiNames) {
            try {
                return (EmbeddedCacheManager) ctx.lookup(jndiName);
            } catch (NamingException ne) {
                String msg = "Unable to retrieve CacheManager from JNDI [" + jndiName + "]";
                log.fine(msg + ": " + ne);
            }
        }
        throw new IOException("Cannot find default JNDI cache manager: " + Arrays.toString(defaultJndiNames));
    }

    protected EmbeddedCacheManager doStandalone() throws IOException {
        String configurationFile = System.getProperty("org.jboss.capedwarf.cache.configurationFile", "infinispan-config.xml");
        return new DefaultCacheManager(configurationFile, true);
    }

    public Cache createCache(Map map) throws CacheException {
        String cacheName = (String) map.get("cache-name");
        org.infinispan.Cache cache = cacheManager.getCache(cacheName);
        return new InfinispanCache(cache);
    }
}