1 files changed, 136 insertions, 0 deletions
diff --git a/glances/exports/glances_influxdb2.py b/glances/exports/glances_influxdb2.py
new file mode 100644
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+++ b/glances/exports/glances_influxdb2.py
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+# -*- coding: utf-8 -*-
+#
+# This file is part of Glances.
+#
+# Copyright (C) 2020 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/>.
+
+"""InfluxDB (from to InfluxDB 1.8+) interface class."""
+
+import sys
+
+from glances.logger import logger
+from glances.exports.glances_export import GlancesExport
+
+from influxdb_client import InfluxDBClient, WriteOptions
+
+
+class Export(GlancesExport):
+    """This class manages the InfluxDB export module."""
+
+    def __init__(self, config=None, args=None):
+        """Init the InfluxDB export IF."""
+        super(Export, self).__init__(config=config, args=args)
+
+        # Mandatories configuration keys (additional to host and port)
+        self.org = None
+        self.bucket = None
+        self.token = None
+
+        # Optionals configuration keys
+        self.protocol = 'http'
+        self.prefix = None
+        self.tags = None
+
+        # Load the InfluxDB configuration file
+        self.export_enable = self.load_conf('influxdb2',
+                                            mandatories=['host', 'port',
+                                                         'user', 'password',
+                                                         'org', 'bucket', 'token'],
+                                            options=['protocol',
+                                                     'prefix',
+                                                     'tags'])
+        if not self.export_enable:
+            sys.exit(2)
+
+        # Init the InfluxDB client
+        self.client = self.init()
+
+    def init(self):
+        """Init the connection to the InfluxDB server."""
+        if not self.export_enable:
+            return None
+
+        url = '{}://{}:{}'.format(self.protocol, self.host, self.port)
+        try:
+            client = InfluxDBClient(url=url,
+                                    enable_gzip=False,
+                                    org=self.org, 
+                                    token=self.token)
+        except Exception as e:
+            logger.critical("Cannot connect to InfluxDB server '%s' (%s)" % (url, e))
+            sys.exit(2)
+        else:
+            logger.info("Connected to InfluxDB server version {} ({})".format(client.health().version,
+                                                                              client.health().message))
+
+
+        # Create the write client
+        write_client = client.write_api(write_options=WriteOptions(batch_size=500,
+                                                                   flush_interval=10000,
+                                                                   jitter_interval=2000,
+                                                                   retry_interval=5000,
+                                                                   max_retries=5,
+                                                                   max_retry_delay=30000,
+                                                                   exponential_base=2))
+        return write_client
+
+    def _normalize(self, name, columns, points):
+        """Normalize data for the InfluxDB's data model."""
+
+        for i, _ in enumerate(points):
+            # Supported type:
+            # https://docs.influxdata.com/influxdb/v2.0/reference/syntax/line-protocol/
+            if points[i] is None:
+                # Ignore points with None value
+                del(points[i])
+                del(columns[i])
+                continue
+            try:
+                points[i] = float(points[i])
+            except (TypeError, ValueError):
+                pass
+            else:
+                continue
+            try:
+                points[i] = str(points[i])
+            except (TypeError, ValueError):
+                pass
+            else:
+                continue
+
+        return [{'measurement': name,
+                 'tags': self.parse_tags(self.tags),
+                 'fields': dict(zip(columns, points))}]
+
+    def export(self, name, columns, points):
+        """Write the points to the InfluxDB server."""
+        # Manage prefix
+        if self.prefix is not None:
+            name = self.prefix + '.' + name
+        # Write input to the InfluxDB database
+        if len(points) == 0:
+            logger.debug("Cannot export empty {} stats to InfluxDB".format(name))
+        else:
+            try:
+                self.client.write(self.bucket,
+                                  self.org,
+                                  self._normalize(name, columns, points), 
+                                  time_precision="s")
+            except Exception as e:
+                # Log level set to debug instead of error (see: issue #1561)
+                logger.debug("Cannot export {} stats to InfluxDB ({})".format(name, e))
+            else:
+                logger.debug("Export {} stats to InfluxDB".format(name))