CacheConfigImpl.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.server.gae.cache;

import com.google.appengine.api.memcache.MemcacheService;
import com.google.appengine.api.memcache.stdimpl.GCacheFactory;
import org.jboss.capedwarf.server.api.cache.impl.AbstractCacheConfig;

import javax.enterprise.context.ApplicationScoped;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

/**
 * Cache config impl.
 *
 * @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
 */
@ApplicationScoped
public class CacheConfigImpl extends AbstractCacheConfig {
    private static final Map<String, Object> CONSTS;

    static {
        CONSTS = new HashMap<String, Object>();
        CONSTS.put("EXPIRATION_DELTA", GCacheFactory.EXPIRATION_DELTA);
        CONSTS.put("EXPIRATION_DELTA_MILLIS", GCacheFactory.EXPIRATION_DELTA_MILLIS);
        CONSTS.put("EXPIRATION", GCacheFactory.EXPIRATION);
    }

    @SuppressWarnings({"unchecked"})
    protected Map createConfig(String name) {
        Map config = new HashMap();
        String prefix = name + ".";
        for (String key : getProps().stringPropertyNames()) {
            if (key.startsWith(prefix)) {
                String subKey = key.substring(prefix.length());
                String value = getProps().getProperty(key);
                Object c = CONSTS.get(subKey);
                if (c != null) {
                    config.put(c, Integer.parseInt(value));
                } else {
                    MemcacheService.SetPolicy policy = null;
                    for (MemcacheService.SetPolicy p : MemcacheService.SetPolicy.values()) {
                        if (p.name().equalsIgnoreCase(subKey)) {
                            policy = p;
                            break;
                        }
                    }
                    if (policy != null) {
                        config.put(policy, Boolean.parseBoolean(value));
                    } else {
                        config.put(subKey, value); // other custom props
                    }
                }
            }
        }
        return config.isEmpty() ? Collections.emptyMap() : config;
    }
}