/*
 * Copyright (c) 2018 MariaDB Corporation Ab
 *
 * Use of this software is governed by the Business Source License included
 * in the LICENSE.TXT file and at www.mariadb.com/bsl11.
 *
 * Change Date: 2022-01-01
 *
 * On the date above, in accordance with the Business Source License, use
 * of this software will be governed by version 2 or later of the General
 * Public License.
 */
#pragma once

/**
 * Internal header for the monitor
 */

#include <maxscale/monitor.hh>
#include <maxscale/resultset.hh>
#include "externcmd.hh"
#include "monitormanager.hh"

#define MON_ARG_MAX 8192

/* Is not really an event as the other values, but is a valid config setting and also the default.
 * Bitmask value matches all events. */
static const MXS_ENUM_VALUE mxs_monitor_event_default_enum = {"all", ~0ULL};
static const MXS_ENUM_VALUE mxs_monitor_event_enum_values[] =
{
    mxs_monitor_event_default_enum,
    {"master_down", MASTER_DOWN_EVENT},
    {"master_up", MASTER_UP_EVENT},
    {"slave_down", SLAVE_DOWN_EVENT},
    {"slave_up", SLAVE_UP_EVENT},
    {"server_down", SERVER_DOWN_EVENT},
    {"server_up", SERVER_UP_EVENT},
    {"synced_down", SYNCED_DOWN_EVENT},
    {"synced_up", SYNCED_UP_EVENT},
    {"donor_down", DONOR_DOWN_EVENT},
    {"donor_up", DONOR_UP_EVENT},
    {"lost_master", LOST_MASTER_EVENT},
    {"lost_slave", LOST_SLAVE_EVENT},
    {"lost_synced", LOST_SYNCED_EVENT},
    {"lost_donor", LOST_DONOR_EVENT},
    {"new_master", NEW_MASTER_EVENT},
    {"new_slave", NEW_SLAVE_EVENT},
    {"new_synced", NEW_SYNCED_EVENT},
    {"new_donor", NEW_DONOR_EVENT},
    {NULL}
};

// RAII helper class for temprarily stopping monitors
class MonitorStop
{
public:
    MonitorStop(mxs::Monitor* monitor)
        : m_monitor(monitor->state() == MONITOR_STATE_RUNNING ? monitor : nullptr)
    {
        if (m_monitor)
        {
            MonitorManager::stop_monitor(m_monitor);
        }
    }

    ~MonitorStop()
    {
        if (m_monitor)
        {
            MonitorManager::start_monitor(m_monitor);
        }
    }

private:
    mxs::Monitor* m_monitor;
};