/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.jackrabbit.oak.plugins.mongomk;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.ConfigurationPolicy;
import org.apache.felix.scr.annotations.Property;
import org.apache.jackrabbit.mk.api.MicroKernel;
import org.apache.jackrabbit.oak.api.jmx.CacheStatsMBean;
import org.apache.jackrabbit.oak.plugins.mongomk.util.MongoConnection;
import org.apache.jackrabbit.oak.spi.whiteboard.OsgiWhiteboard;
import org.apache.jackrabbit.oak.spi.whiteboard.Registration;
import org.apache.jackrabbit.oak.spi.whiteboard.Whiteboard;
import org.apache.sling.commons.osgi.PropertiesUtil;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
import org.osgi.service.component.annotations.Deactivate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.mongodb.DB;
import static org.apache.jackrabbit.oak.spi.whiteboard.WhiteboardUtils.registerMBean;
/**
* The OSGi service to start/stop a MongoMK instance.
*/
@Component(metatype = true,
label = "%oak.mongomk.label",
description = "%oak.mongomk.description",
policy = ConfigurationPolicy.REQUIRE
)
public class MongoMicroKernelService {
private static final String DEFAULT_HOST = "localhost";
private static final int DEFAULT_PORT = 27017;
private static final String DEFAULT_DB = "oak";
private static final int DEFAULT_CACHE = 256;
@Property(value = DEFAULT_HOST)
private static final String PROP_HOST = "host";
@Property(intValue = DEFAULT_PORT)
private static final String PROP_PORT = "port";
@Property(value = DEFAULT_DB)
private static final String PROP_DB = "db";
@Property(intValue = DEFAULT_CACHE)
private static final String PROP_CACHE = "cache";
private static final long MB = 1024 * 1024;
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private ServiceRegistration reg;
private MongoMK mk;
private final List<Registration> registrations = new ArrayList<Registration>();
@Activate
private void activate(BundleContext context, Map<String, ?> config)
throws Exception {
String host = PropertiesUtil.toString(config.get(PROP_HOST), DEFAULT_HOST);
int port = PropertiesUtil.toInteger(config.get(PROP_PORT), DEFAULT_PORT);
String db = PropertiesUtil.toString(config.get(PROP_DB), DEFAULT_DB);
int cacheSize = PropertiesUtil.toInteger(config.get(PROP_CACHE), DEFAULT_CACHE);
logger.info("Starting MongoDB MicroKernel with host={}, port={}, db={}",
new Object[] {host, port, db});
MongoConnection connection = new MongoConnection(host, port, db);
DB mongoDB = connection.getDB();
logger.info("Connected to database {}", mongoDB);
mk = new MongoMK.Builder()
.memoryCacheSize(cacheSize * MB)
.setMongoDB(mongoDB)
.open();
registerJMXBeans(mk, context);
reg = context.registerService(MicroKernel.class.getName(), mk, new Properties());
}
private void registerJMXBeans(MongoMK mk, BundleContext context) {
Whiteboard wb = new OsgiWhiteboard(context);
registrations.add(
registerMBean(wb,
CacheStatsMBean.class,
mk.getNodeCacheStats(),
CacheStatsMBean.TYPE,
mk.getNodeCacheStats().getName())
);
registrations.add(
registerMBean(wb,
CacheStatsMBean.class,
mk.getNodeChildrenCacheStats(),
CacheStatsMBean.TYPE,
mk.getNodeChildrenCacheStats().getName())
);
registrations.add(
registerMBean(wb,
CacheStatsMBean.class,
mk.getDiffCacheStats(),
CacheStatsMBean.TYPE,
mk.getDiffCacheStats().getName())
);
registrations.add(
registerMBean(wb,
CacheStatsMBean.class,
mk.getDocChildrenCacheStats(),
CacheStatsMBean.TYPE,
mk.getDocChildrenCacheStats().getName())
);
DocumentStore ds = mk.getDocumentStore();
if (ds instanceof MongoDocumentStore) {
MongoDocumentStore mds = (MongoDocumentStore) ds;
registrations.add(
registerMBean(wb,
CacheStatsMBean.class,
mds.getCacheStats(),
CacheStatsMBean.TYPE,
mds.getCacheStats().getName())
);
}
}
@Deactivate
private void deactivate() {
for (Registration r : registrations) {
r.unregister();
}
if (reg != null) {
reg.unregister();
}
if (mk != null) {
mk.dispose();
}
}
}