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/**
* ShardInstance
* Copyright 2013 by Michael Peter Christen
* First released 13.02.2013 at http://yacy.net
*
* This library 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 library 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 program in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
package net.yacy.cora.federate.solr.instance;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import net.yacy.cora.federate.solr.connector.ShardSelection;
import org.apache.solr.client.solrj.SolrClient;
public class ShardInstance implements SolrInstance {
private final ArrayList<RemoteInstance> instances;
private final ShardSelection.Method method;
private SolrClient defaultServer;
private Map<String, SolrClient> serverCache;
private final boolean writeEnabled;
public ShardInstance(final ArrayList<RemoteInstance> instances, final ShardSelection.Method method, final boolean writeEnabled) {
this.instances = instances;
this.method = method;
this.writeEnabled = writeEnabled;
this.defaultServer = null;
this.serverCache = new ConcurrentHashMap<String, SolrClient>();
}
@Override
public String getDefaultCoreName() {
return instances.get(0).getDefaultCoreName();
}
@Override
public Collection<String> getCoreNames() {
return instances.get(0).getCoreNames();
}
@Override
public SolrClient getDefaultServer() {
if (this.defaultServer != null) return this.defaultServer;
ArrayList<SolrClient> server = new ArrayList<SolrClient>(instances.size());
for (int i = 0; i < instances.size(); i++) server.set(i, instances.get(i).getDefaultServer());
this.defaultServer = new ServerShard(server, method, this.writeEnabled);
return this.defaultServer;
}
@Override
public SolrClient getServer(String name) {
SolrClient s = serverCache.get(name);
if (s != null) return s;
ArrayList<SolrClient> server = new ArrayList<SolrClient>(instances.size());
for (int i = 0; i < instances.size(); i++) server.add(i, instances.get(i).getServer(name));
s = new ServerShard(server, method, this.writeEnabled);
this.serverCache.put(name, s);
return s;
}
@Override
public void close() {
for (RemoteInstance instance: instances) instance.close();
}
/**
* @param toExternalAddress
* when true, try to replace the eventual loopback host part of the
* Solr instances URLs with the external host name of the hosting machine
* @param externalHost
* the eventual external host name or address to use when
* toExternalAddress is true
* @return the administration URLs of the Solr instances
*/
public ArrayList<String> getAdminInterfaces(final boolean toExternalAddress, final String externalHost) {
ArrayList<String> a = new ArrayList<String>();
for (RemoteInstance i: this.instances) a.add(i.getAdminInterface(toExternalAddress, externalHost));
return a;
}
}
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