def init_config()

in src/worker/exporters/node_exporter.py [0:0]

• 45 lines of code
• 12 McCabe index (conditional complexity)

def init_config(job_id, port=None, ethernet_device='eth0'):
    '''Example of config initialization'''
    global config
    if not port:
        port = 8002
    config = {
        'exit': False,
        'update_freq': 1,
        'listen_port': port,
        'publish_interval': 1,
        'job_id': job_id,
        'fieldFiles': {},
        'counter': {},
        'sample_timestamp': {},
        'ethernet_device': ethernet_device
    }
    # for xid and link flaps
    config['command'] = {}
    cmd = "awk -F= '/^NAME/{print $2}' /etc/os-release"
    result = shell_cmd(cmd, 5)
    if "Ubuntu" in result:
        config['command']['link_flap'] = "sudo grep 'Lost carrier' /var/log/syslog"
        config['command']['xid_error'] = "sudo grep 'NVRM: Xid' /var/log/syslog"
        init_nvidia_config()
        init_ib_config()
    elif "AlmaLinux" in result:
        config['command']['link_flap'] = "sudo grep 'Lost carrier' /var/log/messages"
        config['command']['xid_error'] = "sudo grep 'NVRM: Xid' /var/log/messages"
        init_nvidia_config()
        init_ib_config()
    else:
        logging.info('OS not supported attempting to continue...')

    # get NUMA domain
    config['num_cores'] = psutil.cpu_count()
    config['cpu_numa_map'] = get_core_numa_mapping(config['num_cores'])

    # initalize field specific config parameters
    for field_name in FIELD_LIST:
        config['sample_timestamp'][field_name] = datetime.now() - timedelta(seconds=5)
        if 'net' in field_name:
            config['fieldFiles'][field_name] = '/proc/net/dev'
            # initialize counter, this will ensure a initial value is present
            # to calculate bandwidth
            cmd = "grep '{}' ".format(config['ethernet_device']) + config['fieldFiles'][field_name]
            if field_name == 'net_rx':
                config['counter'][field_name] = shell_cmd(cmd, 5).split()[1]
            elif field_name == 'net_tx':
                config['counter'][field_name] = shell_cmd(cmd, 5).split()[9]
        elif 'cpu' in field_name:
            if 'util' in field_name:
                # Call cpu_percent to get intial 0.0 values
                _ = psutil.cpu_percent(percpu=True)