#!/usr/bin/env python3
# -*- coding: utf-8; py-indent-offset: 4 -*-
#
# Author:  Linuxfabrik GmbH, Zurich, Switzerland
# Contact: info (at) linuxfabrik (dot) ch
#          https://www.linuxfabrik.ch/
# License: The Unlicense, see LICENSE file.

# https://github.com/Linuxfabrik/monitoring-plugins/blob/main/CONTRIBUTING.md

"""See the check's README for more details.
"""

import argparse  # pylint: disable=C0413
import sys  # pylint: disable=C0413

import lib.base  # pylint: disable=C0413
import lib.wildfly  # pylint: disable=C0413
from lib.globals import (STATE_CRIT, STATE_OK,  # pylint: disable=C0413
                          STATE_UNKNOWN, STATE_WARN)

__author__ = 'Linuxfabrik GmbH, Zurich/Switzerland'
__version__ = '2024031501'

DESCRIPTION = 'Returns metrics about Non-XA Datasources of a Wildfly/JBossAS over HTTP.'

DEFAULT_CRIT = 90
DEFAULT_INSECURE = False
DEFAULT_NO_PROXY = False
DEFAULT_TIMEOUT = 3
DEFAULT_URL = 'http://localhost:9990'
DEFAULT_USERNAME = 'wildfly-monitoring'
DEFAULT_WARN = 80


def parse_args():
    """Parse command line arguments using argparse.
    """
    parser = argparse.ArgumentParser(description=DESCRIPTION)

    parser.add_argument(
        '-V', '--version',
        action='version',
        version='%(prog)s: v{} by {}'.format(__version__, __author__)
    )

    parser.add_argument(
        '--always-ok',
        help='Always returns OK.',
        dest='ALWAYS_OK',
        action='store_true',
        default=False,
    )

    parser.add_argument(
        '--critical',
        help='Set the critical threshold.',
        dest='CRIT',
        default=DEFAULT_CRIT,
    )

    parser.add_argument(
        '--datasource',
        help='The name of a specific datasource (repeating). '
             'Default: %(default)s',
        dest='DATASOURCE',
        action='append',
        default=None,
    )

    parser.add_argument(
        '--insecure',
        help='This option explicitly allows to perform "insecure" SSL connections. '
             'Default: %(default)s',
        dest='INSECURE',
        action='store_true',
        default=DEFAULT_INSECURE,
    )

    parser.add_argument(
        '--instance',
        help='The instance (server-config) to check if running in domain mode.',
        dest='INSTANCE',
    )

    parser.add_argument(
        '--mode',
        help='The mode the server is running.',
        dest='MODE',
        choices=['standalone', 'domain'],
        default='standalone',
    )

    parser.add_argument(
        '--no-proxy',
        help='Do not use a proxy. '
             'Default: %(default)s',
        dest='NO_PROXY',
        action='store_true',
        default=DEFAULT_NO_PROXY,
    )

    parser.add_argument(
        '--node',
        help='The node (host) if running in domain mode.',
        dest='NODE',
    )

    parser.add_argument(
        '-p', '--password',
        help='WildFly API password.',
        dest='PASSWORD',
        required=True,
    )

    parser.add_argument(
        '--timeout',
        help='Network timeout in seconds. '
             'Default: %(default)s (seconds)',
        dest='TIMEOUT',
        type=int,
        default=DEFAULT_TIMEOUT,
    )

    parser.add_argument(
        '--url',
        help='WildFly API URL. '
             'Default: %(default)s',
        dest='URL',
        default=DEFAULT_URL,
    )

    parser.add_argument(
        '--username',
        help='WildFly API username. '
             'Default: %(default)s',
        dest='USERNAME',
        default=DEFAULT_USERNAME,
        required=True,
    )

    parser.add_argument(
        '--warning',
        help='Set the warning threshold.',
        dest='WARN',
        default=DEFAULT_WARN,
    )

    return parser.parse_args()


def check_non_xa_datasource(args):
    data = {
        'operation': 'read-resource',
        'include-runtime': 'true',
        'recursive': 'true',
        # /subsystem/datasources/data-source/" + ds_name + "/statistics/pool/
        'address': [{'subsystem': 'datasources'}, {'data-source': '*'}, {'statistics': 'pool'}],
        'json': 1,
    }
    res = lib.wildfly.get_data(args, data)

    msg = ''
    perfdata = ''
    state = STATE_OK

    ds_stat_types = [
        'BlockingFailureCount',
        'CreatedCount',
        'DestroyedCount',
        'IdleCount',
        'InUseCount',
        'MaxWaitCount',
        'WaitCount',
        # 'XACommitCount',
        # 'XAEndCount',
        # 'XAForgetCount',
        # 'XAPrepareCount',
        # 'XARecoverCount',
        # 'XARollbackCount',
        # 'XAStartCount',
    ]

    for ds in res:
        name = ''
        # get the datasource name
        for v in ds['address']:
            if 'data-source' in v:
                name = v['data-source']
                break

        if args.DATASOURCE is not None:
            # filter for specific datasource
            if not name in args.DATASOURCE:
                continue

        available = int(ds['result']['AvailableCount'])
        if available == 0:
            msg += 'Statistics are not enabled for data source {}; '.format(name)
            continue

        msg += '{}: '.format(name)

        active = int(ds['result']['ActiveCount'])
        max_used = int(ds['result']['MaxUsedCount'])
        if available != 0:
            active_pct = round(float(active) / float(available) * 100, 1)
            max_used_pct = round(float(max_used) / float(available) * 100, 1)
        else:
            active_pct = 0
            max_used_pct = 0

        local_state = lib.base.get_state(active_pct, args.WARN, args.CRIT)
        msg += '{}% active used ({}/{}){}, '.format(active_pct, active, available, lib.base.state2str(local_state, prefix=' '))
        state = lib.base.get_worst(local_state, state)

        local_state = lib.base.get_state(active_pct, args.WARN, args.CRIT)
        msg += '{}% max used ({}/{}){}, '.format(max_used_pct, max_used, available, lib.base.state2str(local_state, prefix=' '))
        state = lib.base.get_worst(local_state, state)

        perfdata += lib.base.get_perfdata('non-xa-ds-{}-available'.format(name), available, None, None, None, 0, available)
        perfdata += lib.base.get_perfdata('non-xa-ds-{}-active'.format(name), active, None, None, None, 0, active)
        perfdata += lib.base.get_perfdata('non-xa-ds-{}-active-pct'.format(name), active_pct, '%', args.WARN, args.CRIT, 0, 100)
        perfdata += lib.base.get_perfdata('non-xa-ds-{}-maxused'.format(name), max_used, None, None, None, 0, available)
        perfdata += lib.base.get_perfdata('non-xa-ds-{}-maxused-pct'.format(name), max_used_pct, '%', args.WARN, args.CRIT, 0, 100)

        for metric in ds_stat_types:
            if metric in ds['result']:
                if ds['result'][metric] > 0:
                    msg += '{}={}, '.format(metric, ds['result'][metric])
                perfdata += lib.base.get_perfdata('non-xa-ds-{}-{}'.format(name, metric.lower()), ds['result'][metric], None, None, None, 0, None)
        msg = msg[:-2] + '; '

    if msg:
        lib.base.oao('{}'.format(msg[:-2]), state, perfdata, always_ok=args.ALWAYS_OK)
    else:
        lib.base.oao('No datasources found.', state)


def main():
    """The main function. Hier spielt die Musik.
    """

    # parse the command line, exit with UNKNOWN if it fails
    try:
        args = parse_args()
    except SystemExit:
        sys.exit(STATE_UNKNOWN)

    # fetch data
    # https://docs.wildfly.org/23/Admin_Guide.html
    return check_non_xa_datasource(args)


if __name__ == '__main__':
    try:
        main()
    except Exception:   # pylint: disable=W0703
        lib.base.cu()
