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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.transport;
import org.elasticsearch.Version;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.common.util.concurrent.ThreadContext;
/**
* Represents a transport message sent over the network. Subclasses implement serialization and
* deserialization.
*/
public abstract class NetworkMessage {
protected final Version version;
protected final Writeable threadContext;
protected final long requestId;
protected final byte status;
protected final Compression.Scheme compressionScheme;
NetworkMessage(ThreadContext threadContext, Version version, byte status, long requestId, Compression.Scheme compressionScheme) {
this.threadContext = threadContext.captureAsWriteable();
this.version = version;
this.requestId = requestId;
this.compressionScheme = adjustedScheme(version, compressionScheme);
if (this.compressionScheme != null) {
this.status = TransportStatus.setCompress(status);
} else {
this.status = status;
}
}
public Version getVersion() {
return version;
}
public long getRequestId() {
return requestId;
}
boolean isCompress() {
return TransportStatus.isCompress(status);
}
boolean isResponse() {
return TransportStatus.isRequest(status) == false;
}
boolean isRequest() {
return TransportStatus.isRequest(status);
}
boolean isHandshake() {
return TransportStatus.isHandshake(status);
}
boolean isError() {
return TransportStatus.isError(status);
}
private static Compression.Scheme adjustedScheme(Version version, Compression.Scheme compressionScheme) {
return compressionScheme == Compression.Scheme.LZ4 && version.before(Compression.Scheme.LZ4_VERSION) ? null : compressionScheme;
}
}