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A Shaded CQL ActivityType driver for http://nosqlbench.io/
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/**
 * MIT License
 *
 * Copyright (c) 2010 - 2020 The OSHI Project Contributors: https://github.com/oshi/oshi/graphs/contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package oshi.software.os.unix.aix;

import static com.sun.jna.platform.unix.LibCAPI.HOST_NAME_MAX; // NOSONAR squid:S1191

import com.sun.jna.Native;

import oshi.annotation.concurrent.ThreadSafe;
import oshi.jna.platform.unix.aix.AixLibc;
import oshi.software.common.AbstractNetworkParams;
import oshi.util.Constants;
import oshi.util.ExecutingCommand;
import oshi.util.ParseUtil;

/**
 * AixNetworkParams class.
 */
@ThreadSafe
final class AixNetworkParams extends AbstractNetworkParams {

    private static final AixLibc LIBC = AixLibc.INSTANCE;

    @Override
    public String getHostName() {
        byte[] hostnameBuffer = new byte[HOST_NAME_MAX + 1];
        if (0 != LIBC.gethostname(hostnameBuffer, hostnameBuffer.length)) {
            return super.getHostName();
        }
        return Native.toString(hostnameBuffer);
    }

    @Override
    public String getIpv4DefaultGateway() {
        return getDefaultGateway("netstat -rnf inet");
    }

    @Override
    public String getIpv6DefaultGateway() {
        return getDefaultGateway("netstat -rnf inet6");
    }

    private static String getDefaultGateway(String netstat) {
        /*-
        $ netstat -rnf inet
        Routing tables
        Destination        Gateway           Flags   Refs     Use  If   Exp  Groups
        *
        Route Tree for Protocol Family 2 (Internet):
        default            192.168.10.1      UG        9    873816 en0      -      -
        127/8              127.0.0.1         U         9    839480 lo0      -      -
        192.168.10.0       192.168.10.80     UHSb      0         0 en0      -      -   =>
        192.168.10/24      192.168.10.80     U         3    394820 en0      -      -
        192.168.10.80      127.0.0.1         UGHS      0         7 lo0      -      -
        192.168.10.255     192.168.10.80     UHSb      2      7466 en0      -      -
        */
        for (String line : ExecutingCommand.runNative(netstat)) {
            String[] split = ParseUtil.whitespaces.split(line);
            if (split.length > 7 && "default".equals(split[0])) {
                return split[1];
            }
        }
        return Constants.UNKNOWN;
    }
}