org.infinispan.client.hotrod.impl.operations.StatsOperation Maven / Gradle / Ivy

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Infinispan Remote Client All-in-One module

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package org.infinispan.client.hotrod.impl.operations;

import net.jcip.annotations.Immutable;
import org.infinispan.client.hotrod.Flag;
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;

import java.net.SocketAddress;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * Implements to the stats operation as defined by Hot Rod protocol specification.
 *
 * @author [email protected]
 * @since 4.1
 */
@Immutable
public class StatsOperation extends RetryOnFailureOperation> {

   public StatsOperation(Codec codec, TransportFactory transportFactory,
            byte[] cacheName, AtomicInteger topologyId, Flag[] flags) {
      super(codec, transportFactory, cacheName, topologyId, flags);
   }

   @Override
   protected Transport getTransport(int retryCount, Set failedServers) {
      return transportFactory.getTransport(failedServers, cacheName);
   }

   @Override
   protected Map executeOperation(Transport transport) {
      Map result;
      // 1) write header
      HeaderParams params = writeHeader(transport, STATS_REQUEST);
      transport.flush();

      readHeaderAndValidate(transport, params);
      int nrOfStats = transport.readVInt();

      result = new HashMap();
      for (int i = 0; i < nrOfStats; i++) {
         String statName = transport.readString();
         String statValue = transport.readString();
         result.put(statName, statValue);
      }
      return result;
   }
}