1 files changed, 96 insertions, 0 deletions
diff --git a/glances/exports/glances_zeromq/__init__.py b/glances/exports/glances_zeromq/__init__.py
new file mode 100644
index 00000000..18b229d8
--- /dev/null
+++ b/glances/exports/glances_zeromq/__init__.py
@@ -0,0 +1,96 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of Glances.
+#
+# SPDX-FileCopyrightText: 2022 Nicolas Hennion <nicolas@nicolargo.com>
+#
+# SPDX-License-Identifier: LGPL-3.0-only
+#
+
+"""ZeroMQ interface class."""
+
+import sys
+
+from glances.globals import b
+from glances.logger import logger
+from glances.exports.export import GlancesExport
+from glances.globals import json_dumps
+
+import zmq
+from zmq.utils.strtypes import asbytes
+
+
+class Export(GlancesExport):
+
+    """This class manages the ZeroMQ export module."""
+
+    def __init__(self, config=None, args=None):
+        """Init the ZeroMQ export IF."""
+        super(Export, self).__init__(config=config, args=args)
+
+        # Mandatory configuration keys (additional to host and port)
+        self.prefix = None
+
+        # Optionals configuration keys
+        # N/A
+
+        # Load the ZeroMQ configuration file section ([export_zeromq])
+        self.export_enable = self.load_conf('zeromq', mandatories=['host', 'port', 'prefix'], options=[])
+        if not self.export_enable:
+            exit('Missing ZEROMQ config')
+
+        # Init the ZeroMQ context
+        self.context = None
+        self.client = self.init()
+
+    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
+
+    def exit(self):
+        """Close the socket and context"""
+        if self.client is not None:
+            self.client.close()
+        if self.context is not None:
+            self.context.destroy()
+
+    def export(self, name, columns, points):
+        """Write the points to the ZeroMQ server."""
+        logger.debug("Export {} stats to ZeroMQ".format(name))
+
+        # Create DB input
+        data = dict(zip(columns, points))
+
+        # Do not publish empty stats
+        if data == {}:
+            return False
+
+        # Glances envelopes the stats in a publish message with two frames:
+        # - First frame containing the following prefix (STRING)
+        # - Second frame with the Glances plugin name (STRING)
+        # - Third frame with the Glances plugin stats (JSON)
+        message = [b(self.prefix), b(name), asbytes(json_dumps(data))]
+
+        # Write data to the ZeroMQ bus
+        # Result can be view: tcp://host:port
+        try:
+            self.client.send_multipart(message)
+        except Exception as e:
+            logger.error("Cannot export {} stats to ZeroMQ ({})".format(name, e))
+
+        return True