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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2018 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://oss.oracle.com/licenses/CDDL+GPL-1.1
 * or LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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package org.shoal.adapter.store.commands;

import org.shoal.ha.cache.api.ShoalCacheLoggerConstants;
import org.shoal.ha.cache.impl.command.Command;
import org.shoal.ha.cache.impl.command.ReplicationCommandOpcode;
import org.shoal.ha.cache.impl.util.CommandResponse;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.concurrent.Future;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * @author Mahesh Kannan
 */
public class RemoveExpiredCommand
    extends Command {

    protected static final Logger _logger = Logger.getLogger(ShoalCacheLoggerConstants.CACHE_REMOVE_COMMAND);

    private long maxIdleInMillis;

    private long tokenId;

    private String target;

    public RemoveExpiredCommand(long maxIdleInMillis, long tokenId) {
        super(ReplicationCommandOpcode.REMOVE_EXPIRED);
        this.maxIdleInMillis = maxIdleInMillis;
        this.tokenId = tokenId;

        super.setKey("RemExpired" + System.identityHashCode(this));
    }

    public void setTarget(String t) {
        this.target = t;
    }

    public boolean beforeTransmit() {
        setTargetName(target);
        return target != null;
    }

    public Object getCommandKey() {
        return "RemExpired" + System.identityHashCode(this);
    }
    
    private void writeObject(ObjectOutputStream ros) throws IOException {
        ros.writeLong(maxIdleInMillis);
        ros.writeLong(tokenId);
        ros.writeUTF(dsc.getInstanceName());
    }

    private void readObject(ObjectInputStream ris)
        throws IOException, ClassNotFoundException {
        maxIdleInMillis = ris.readLong();
        tokenId = ris.readLong();
        target = ris.readUTF();
    }

    @Override
    public void execute(String initiator) {
        int localResult = dsc.getReplicaStore().removeExpired();
        RemoveExpiredResultCommand resultCmd = new RemoveExpiredResultCommand(target, tokenId, localResult);
        try {
            dsc.getCommandManager().execute(resultCmd);
        } catch (Exception ex) {
            _logger.log(Level.WARNING, "Exception while trying to send result for remove_expired", ex);
        }
    }

    @Override
    protected boolean isArtificialKey() {
        return true;
    }

    public String toString() {
        return getName() + "(" + maxIdleInMillis + ")";
    }
}