Add the forgotten glances_statsd.py script

glances/exports/glances_statsd.py

+# -*- coding: utf-8 -*-
+#
+# This file is part of Glances.
+#
+# Copyright (C) 2015 Nicolargo <nicolas@nicolargo.com>
+#
+# Glances is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Glances is distributed in the hope that it will be useful,
+# 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 <http://www.gnu.org/licenses/>.
+
+"""Statsd interface class."""
+
+# Import sys libs
+from statsd import StatsClient
+from numbers import Number
+import sys
+
+# Import Glances lib
+from glances.core.glances_logging import logger
+from ConfigParser import NoSectionError, NoOptionError
+from glances.exports.glances_export import GlancesExport
+
+
+class Export(GlancesExport):
+
+    """This class manages the Statsd export module."""
+
+    def __init__(self, config=None, args=None):
+        """Init the Statsd export IF."""
+        GlancesExport.__init__(self, config=config, args=args)
+
+        # Load the InfluxDB configuration file
+        self.host = None
+        self.port = None
+        self.prefix = None
+        self.export_enable = self.load_conf()
+        if not self.export_enable:
+            sys.exit(2)
+
+        # Default prefix for stats is 'glances'
+        if self.prefix is None:
+            self.prefix = 'glances'
+
+        # Init the Statsd client
+        self.client = StatsClient(self.host,
+                                  int(self.port),
+                                  prefix=self.prefix)
+
+    def load_conf(self, section="statsd"):
+        """Load the Statsd configuration in the Glances configuration file"""
+        if self.config is None:
+            return False
+        try:
+            self.host = self.config.get_raw_option(section, "host")
+            self.port = self.config.get_raw_option(section, "port")
+        except NoSectionError:
+            logger.critical("No Statsd configuration found")
+            return False
+        except NoOptionError as e:
+            logger.critical("Error in the Statsd configuration (%s)" % e)
+            return False
+        else:
+            logger.debug("Load Statsd from the Glances configuration file")
+        # Prefix is optional
+        try:
+            self.prefix = self.config.get_raw_option(section, "prefix")
+        except NoOptionError as e:
+            pass
+        return True
+
+    def init(self, prefix='glances'):
+        """Init the connection to the Statsd server"""
+        if not self.export_enable:
+            return None
+        return StatsClient(self.host,
+                           self.port,
+                           prefix=prefix)
+
+    def update(self, stats):
+        """Update stats to the InfluxDB server."""
+        if not self.export_enable:
+            return False
+
+        # Get the stats
+        all_stats = stats.getAll()
+        plugins = stats.getAllPlugins()
+
+        # Loop over available plugin
+        i = 0
+        for plugin in plugins:
+            if plugin in self.plugins_to_export():
+                if type(all_stats[i]) is list:
+                    for item in all_stats[i]:
+                        export_names = map(
+                            lambda x: item[item['key']] + '.' + x, item.keys())
+                        export_values = item.values()
+                        self.__export(plugin, export_names, export_values)
+                elif type(all_stats[i]) is dict:
+                    export_names = all_stats[i].keys()
+                    export_values = all_stats[i].values()
+                    self.__export(plugin, export_names, export_values)
+            i += 1
+
+        return True
+
+    def __export(self, name, columns, points):
+        """Export the stats to the Statsd server"""
+        for i in range(0, len(columns)):
+            if not isinstance(points[i], Number):
+                continue
+            stat_name = '{0}.{1}'.format(name, columns[i])
+            stat_value = points[i]
+            try:
+                self.client.gauge(stat_name, stat_value)
+            except Exception as e:
+                logger.critical("Can not export stats to Statsd (%s)" % e)