org.infinispan.client.hotrod.impl.operations.HotRodOperation Maven / Gradle / Ivy
package org.infinispan.client.hotrod.impl.operations;
import java.util.concurrent.atomic.AtomicInteger;
import org.infinispan.client.hotrod.configuration.Configuration;
import org.infinispan.client.hotrod.impl.protocol.Codec;
import org.infinispan.client.hotrod.impl.protocol.HeaderParams;
import org.infinispan.client.hotrod.impl.protocol.HotRodConstants;
import org.infinispan.client.hotrod.impl.transport.Transport;
import net.jcip.annotations.Immutable;
/**
* Generic Hot Rod operation. It is aware of {@link org.infinispan.client.hotrod.Flag}s and it is targeted against a
* cache name. This base class encapsulates the knowledge of writing and reading a header, as described in the
* Hot Rod protocol specification
*
* @author [email protected]
* @since 4.1
*/
@Immutable
public abstract class HotRodOperation implements HotRodConstants {
protected final int flags;
public final byte[] cacheName;
protected final AtomicInteger topologyId;
protected final Codec codec;
protected final Configuration cfg;
private static final byte NO_TX = 0;
private static final byte XA_TX = 1;
protected HotRodOperation(Codec codec, int flags, Configuration cfg, byte[] cacheName, AtomicInteger topologyId) {
this.flags = flags;
this.cfg = cfg;
this.cacheName = cacheName;
this.topologyId = topologyId;
this.codec = codec;
}
public abstract Object execute();
protected final HeaderParams writeHeader(Transport transport, short operationCode) {
HeaderParams params = new HeaderParams()
.opCode(operationCode).cacheName(cacheName).flags(flags)
.clientIntel(cfg.clientIntelligence())
.topologyId(topologyId).txMarker(NO_TX)
.topologyAge(transport.getTransportFactory().getTopologyAge());
return codec.writeHeader(transport, params);
}
/**
* Magic | Message Id | Op code | Status | Topology Change Marker
*/
protected short readHeaderAndValidate(Transport transport, HeaderParams params) {
return codec.readHeader(transport, params);
}
}
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