package org.infinispan.client.hotrod.impl.operations;
import java.net.SocketAddress;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import org.infinispan.client.hotrod.configuration.ClientIntelligence;
import org.infinispan.client.hotrod.impl.protocol.Codec;
import org.infinispan.client.hotrod.impl.protocol.HeaderParams;
import org.infinispan.client.hotrod.impl.transport.Transport;
import org.infinispan.client.hotrod.impl.transport.TransportFactory;
/**
* Reads more keys at a time. Specified <a href="http://community.jboss.org/wiki/HotRodBulkGet-Design">here</a>.
*
* @author Mircea.Markus@jboss.com
* @since 4.1
*/
public class BulkGetOperation<K, V> extends RetryOnFailureOperation<Map<K, V>> {
private final int entryCount;
public BulkGetOperation(Codec codec, TransportFactory transportFactory, byte[] cacheName, AtomicInteger topologyId,
int flags, ClientIntelligence clientIntelligence, int entryCount) {
super(codec, transportFactory, cacheName, topologyId, flags, clientIntelligence);
this.entryCount = entryCount;
}
@Override
protected Transport getTransport(int retryCount, Set<SocketAddress> failedServers) {
return transportFactory.getTransport(failedServers, cacheName);
}
@Override
protected Map<K, V> executeOperation(Transport transport) {
HeaderParams params = writeHeader(transport, BULK_GET_REQUEST);
transport.writeVInt(entryCount);
transport.flush();
short status = readHeaderAndValidate(transport, params);
Map<K, V> result = new HashMap<K, V>();
while ( transport.readByte() == 1) { //there's more!
K key = codec.readUnmarshallByteArray(transport, status);
V value = codec.readUnmarshallByteArray(transport, status);
result.put(key, value);
}
return result;
}
}