/*
* 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.index.solr.osgi;
import java.util.HashMap;
import java.util.Map;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.PropertyOption;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.References;
import org.apache.felix.scr.annotations.Service;
import org.apache.jackrabbit.oak.plugins.index.solr.configuration.SolrServerConfiguration;
import org.apache.jackrabbit.oak.plugins.index.solr.configuration.SolrServerConfigurationProvider;
import org.apache.jackrabbit.oak.plugins.index.solr.server.SolrServerProvider;
import org.apache.solr.client.solrj.SolrServer;
import org.osgi.service.component.ComponentContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* OSGi service for {@link org.apache.jackrabbit.oak.plugins.index.solr.server.SolrServerProvider}
*/
@Component(metatype = true, label = "Oak Solr server provider", immediate = true)
@References({
@Reference(name = "solrServerConfigurationProvider",
referenceInterface = SolrServerConfigurationProvider.class,
cardinality = ReferenceCardinality.MANDATORY_MULTIPLE,
policy = ReferencePolicy.DYNAMIC,
bind = "bindSolrServerConfigurationProvider",
unbind = "unbindSolrServerConfigurationProvider",
updated = "updateSolrServerConfigurationProvider"
)
})
@Service(SolrServerProvider.class)
public class SolrServerProviderService implements SolrServerProvider {
private final Logger log = LoggerFactory.getLogger(getClass());
@Property(options = {
@PropertyOption(name = "none",
value = "None"
),
@PropertyOption(name = "embedded",
value = "Embedded Solr"
),
@PropertyOption(name = "remote",
value = "Remote Solr"
)},
value = "none"
)
private static final String SERVER_TYPE = "server.type";
private final Map<String, SolrServerConfigurationProvider> solrServerConfigurationProviders = new HashMap<String, SolrServerConfigurationProvider>();
private String serverType;
private SolrServer cachedSolrServer;
@Activate
protected void activate(ComponentContext context) throws Exception {
serverType = String.valueOf(context.getProperties().get(SERVER_TYPE));
}
@Deactivate
protected void deactivate() throws Exception {
solrServerConfigurationProviders.clear();
shutdownSolrServer();
}
private void shutdownSolrServer() {
if (cachedSolrServer != null) {
try {
cachedSolrServer.shutdown();
} catch (Exception e) {
log.error("could not correctly shutdown Solr {} server {}", serverType, cachedSolrServer);
} finally {
cachedSolrServer = null;
}
}
}
protected void bindSolrServerConfigurationProvider(final SolrServerConfigurationProvider solrServerConfigurationProvider, Map<String, Object> properties) {
synchronized (solrServerConfigurationProviders) {
String name = String.valueOf(properties.get("name"));
solrServerConfigurationProviders.put(name, solrServerConfigurationProvider);
shutdownSolrServer();
}
}
protected void unbindSolrServerConfigurationProvider(final SolrServerConfigurationProvider solrServerConfigurationProvider, Map<String, Object> properties) {
synchronized (solrServerConfigurationProviders) {
String name = String.valueOf(properties.get("name"));
solrServerConfigurationProviders.remove(name);
shutdownSolrServer();
}
}
protected void updatedSolrServerConfigurationProvider(final SolrServerConfigurationProvider solrServerConfigurationProvider, Map<String, Object> properties) {
synchronized (solrServerConfigurationProviders) {
String name = String.valueOf(properties.get("name"));
solrServerConfigurationProviders.put(name, solrServerConfigurationProvider);
shutdownSolrServer();
}
}
@Override
public SolrServer getSolrServer() throws Exception {
synchronized (solrServerConfigurationProviders) {
if (cachedSolrServer == null) {
if (serverType != null && !"none".equals(serverType)) {
SolrServerConfigurationProvider solrServerConfigurationProvider = solrServerConfigurationProviders.get(serverType);
if (solrServerConfigurationProvider != null) {
try {
SolrServerConfiguration solrServerConfiguration = solrServerConfigurationProvider.getSolrServerConfiguration();
SolrServerProvider solrServerProvider = solrServerConfiguration.getProvider();
cachedSolrServer = solrServerProvider.getSolrServer();
} catch (Exception e) {
log.error("could not get a SolrServerProvider of type {}", serverType, e);
}
}
}
}
return cachedSolrServer;
}
}
}