How to use Glances - 10 common examples

ret.append(self.curse_add_line(msg))
            msg = '{:>7}'.format('W/s')
            ret.append(self.curse_add_line(msg))
        # Disk list (sorted by name)
        for i in self.sorted_stats():
            # Is there an alias for the disk name ?
            disk_real_name = i['disk_name']
            disk_name = self.has_alias(i['disk_name'])
            if disk_name is None:
                disk_name = disk_real_name
            # New line
            ret.append(self.curse_new_line())
            if len(disk_name) > name_max_width:
                # Cut disk name if it is too long
                disk_name = '_' + disk_name[-name_max_width:]
            msg = '{:{width}}'.format(nativestr(disk_name),
                                      width=name_max_width)
            ret.append(self.curse_add_line(msg))
            if args.diskio_iops:
                # count
                txps = self.auto_unit(
                    int(i['read_count'] // i['time_since_update']))
                rxps = self.auto_unit(
                    int(i['write_count'] // i['time_since_update']))
                msg = '{:>7}'.format(txps)
                ret.append(self.curse_add_line(msg,
                                               self.get_views(item=i[self.get_key()],
                                                              key='read_count',
                                                              option='decoration')))
                msg = '{:>7}'.format(rxps)
                ret.append(self.curse_add_line(msg,
                                               self.get_views(item=i[self.get_key()],

# Exit if no data
        if data == "":
            return

        # Safety check to avoid malformed data
        # Considering the size of "|/dev/sda||0||" as the minimum
        if len(data) < 14:
            data = self.cache if len(self.cache) > 0 else self.fetch()
        self.cache = data

        try:
            fields = data.split(b'|')
        except TypeError:
            fields = ""
        devices = (len(fields) - 1) // 5
        for item in range(devices):
            offset = item * 5
            hddtemp_current = {}
            device = os.path.basename(nativestr(fields[offset + 1]))
            temperature = fields[offset + 3]
            unit = nativestr(fields[offset + 4])
            hddtemp_current['label'] = device
            try:
                hddtemp_current['value'] = float(temperature)
            except ValueError:
                # Temperature could be 'ERR', 'SLP' or 'UNK' (see issue #824)
                # Improper bytes/unicode in glances_hddtemp.py (see issue #887)
                hddtemp_current['value'] = nativestr(temperature)
            hddtemp_current['unit'] = unit
            self.hddtemp_list.append(hddtemp_current)

def exit(self):
        """Just log an event when Glances exit."""
        logger.debug("Stop the {} plugin".format(self.plugin_name))

def exit(self):
        """Close the CSV file."""
        logger.debug("Finalise export interface %s" % self.export_name)
        self.csv_file.close()

def init(self):
        """Init the Prometheus Exporter"""
        try:
            start_http_server(port=int(self.port), addr=self.host)
        except Exception as e:
            logger.critical("Can not start Prometheus exporter on {}:{} ({})".format(self.host, self.port, e))
            sys.exit(2)
        else:
            logger.info("Start Prometheus exporter on {}:{}".format(self.host, self.port))

def init(self):
        """Init the connection to the Riemann server."""
        if not self.export_enable:
            return None
        try:
            client = bernhard.Client(host=self.host, port=self.port)
            return client
        except Exception as e:
            logger.critical("Connection to Riemann failed : %s " % e)
            return None

def init(self):
        """Init the connection to the RESTful server."""
        if not self.export_enable:
            return None
        # Build the RESTful URL where the stats will be posted
        url = '{}://{}:{}{}'.format(self.protocol,
                                    self.host,
                                    self.port,
                                    self.path)
        logger.info(
            "Stats will be exported to the RESTful endpoint {}".format(url))
        return url

def init(self):
        """Init the connection to the CouchDB server."""
        if not self.export_enable:
            return None

        server_uri = 'tcp://{}:{}'.format(self.host, self.port)

        try:
            self.context = zmq.Context()
            publisher = self.context.socket(zmq.PUB)
            publisher.bind(server_uri)
        except Exception as e:
            logger.critical("Cannot connect to ZeroMQ server %s (%s)" % (server_uri, e))
            sys.exit(2)
        else:
            logger.info("Connected to the ZeroMQ server %s" % server_uri)

        return publisher

# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see .

import sys

from glances.logger import logger

# Import mandatory PySNMP lib
try:
    from pysnmp.entity.rfc3413.oneliner import cmdgen
except ImportError:
    logger.critical("PySNMP library not found. To install it: pip install pysnmp")
    sys.exit(2)


class GlancesSNMPClient(object):

    """SNMP client class (based on pysnmp library)."""

    def __init__(self, host='localhost', port=161, version='2c',
                 community='public', user='private', auth=''):

        super(GlancesSNMPClient, self).__init__()
        self.cmdGen = cmdgen.CommandGenerator()

        self.version = version

        self.host = host

# The users dict
        # username / password couple
        # By default, no auth is needed
        self.server.user_dict = {}
        self.server.isAuth = False

        # Register functions
        self.server.register_introspection_functions()
        self.server.register_instance(GlancesInstance(config, args))

        if not self.args.disable_autodiscover:
            # Note: The Zeroconf service name will be based on the hostname
            # Correct issue: Zeroconf problem with zeroconf service name #889
            self.autodiscover_client = GlancesAutoDiscoverClient(socket.gethostname().split('.', 1)[0], args)
        else:
            logger.info("Glances autodiscover announce is disabled")