package swift.client.proto;

import swift.clocks.CausalityClock;
import swift.clocks.Timestamp;
import sys.net.api.rpc.RpcConnection;
import sys.net.api.rpc.RpcHandler;
import sys.net.api.rpc.RpcMessage;

/**
 * Client request to keepalive certain state at the server/storage-side.
 * Currently used to renew validity of a timestamp and/or keep version of
 * objects alive (not pruned).
 * 
 * @author mzawirski
 */
public class KeepaliveRequest implements RpcMessage {
    protected Timestamp timestamp;
    protected CausalityClock version;

    /**
     * Fake constructor for Kryo serialization. Do NOT use.
     */
    public KeepaliveRequest() {
    }

    public KeepaliveRequest(final Timestamp timestamp, final CausalityClock version) {
    }

    /**
     * @return the timestamp previously received from the server, subject to
     *         validity renewal by server; null if client does not request to
     *         renew the validity of any timestamp
     */
    public Timestamp getTimestamp() {
        return timestamp;
    }

    /**
     * @return the oldest snapshot in use by the client; the server should keep
     *         the requested (and later) versions of all objects; null if client
     *         does not request to keep any version of objects
     */
    public CausalityClock getVersion() {
        return version;
    }

    @Override
    public void deliverTo(RpcConnection conn, RpcHandler handler) {
        ((BaseServer) handler).onReceive(conn, this);
    }
}

package swift.client.proto;

import swift.clocks.CausalityClock;
import swift.clocks.Timestamp;
import sys.net.api.rpc.RpcConnection;
import sys.net.api.rpc.RpcHandler;
import sys.net.api.rpc.RpcMessage;

/**
 * Client request to keepalive certain state at the server/storage-side.
 * Currently used to renew validity of a timestamp and/or keep version of
 * objects alive (not pruned).
 * 
 * @author mzawirski
 */
public class KeepaliveRequest implements RpcMessage {
    protected Timestamp timestamp;
    protected CausalityClock version;

    /**
     * Fake constructor for Kryo serialization. Do NOT use.
     */
    public KeepaliveRequest() {
    }

    public KeepaliveRequest(final Timestamp timestamp, final CausalityClock version) {
        this.timestamp = timestamp;
        this.version = version;
    }

    /**
     * @return the timestamp previously received from the server, subject to
     *         validity renewal by server; null if client does not request to
     *         renew the validity of any timestamp
     */
    public Timestamp getTimestamp() {
        return timestamp;
    }

    /**
     * @return the oldest snapshot in use by the client; the server should keep
     *         the requested (and later) versions of all objects; null if client
     *         does not request to keep any version of objects
     */
    public CausalityClock getVersion() {
        return version;
    }

    @Override
    public void deliverTo(RpcConnection conn, RpcHandler handler) {
        ((BaseServer) handler).onReceive(conn, this);
    }
}

fix the constructor