org.syphr.mythtv.control.impl.Command0_24QueryMemStats Maven / Gradle / Ivy

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This library provides a Java interface to the MythTV frontend control socket.

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/*
 * Copyright 2011-2012 Gregory P. Moyer
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.syphr.mythtv.control.impl;

import java.io.IOException;

import org.apache.commons.lang3.tuple.Pair;
import org.syphr.mythtv.data.MemStats;
import org.syphr.mythtv.types.MemStatCategory;
import org.syphr.mythtv.util.exception.ProtocolException;
import org.syphr.mythtv.util.exception.ProtocolException.Direction;
import org.syphr.mythtv.util.socket.AbstractCommand;
import org.syphr.mythtv.util.socket.SocketManager;
import org.syphr.mythtv.util.translate.Translator;

/* default */class Command0_24QueryMemStats extends AbstractCommand
{
    public Command0_24QueryMemStats(Translator translator)
    {
        super(translator);
    }

    @Override
    protected String getMessage()
    {
        return "query memstats";
    }

    @SuppressWarnings("unchecked")
    @Override
    public MemStats send(SocketManager socketManager) throws IOException
    {
        String response = socketManager.sendAndWait(getMessage());
        String[] args = response.split("\\s+");

        if (args.length != 4)
        {
            throw new ProtocolException(response, Direction.RECEIVE);
        }

        try
        {
            return new MemStats(Pair.of(MemStatCategory.TOTAL_PHYSICAL, Integer.parseInt(args[0])),
                                Pair.of(MemStatCategory.FREE_PHYSICAL, Integer.parseInt(args[1])),
                                Pair.of(MemStatCategory.TOTAL_VIRTUAL, Integer.parseInt(args[2])),
                                Pair.of(MemStatCategory.FREE_VIRTUAL, Integer.parseInt(args[3])));
        }
        catch (NumberFormatException e)
        {
            throw new ProtocolException(response, Direction.RECEIVE, e);
        }
    }
}