Change exit message when export plugin init failed

conf/glances.conf

@@ -546,7 +546,7 @@ queue=glances_queue
 [mqtt]
 # Configuration for the --export mqtt option
 host=localhost
-port=8883
+port=1883
 tls=true
 user=guest
 password=guest

glances/exports/glances_influxdb.py

@@ -42,7 +42,7 @@ class Export(GlancesExport):
             'influxdb', mandatories=['host', 'port', 'user', 'password', 'db'], options=['protocol', 'prefix', 'tags']
         )
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing INFLUXDB version 1 config')
 
         # The hostname is always add as a tag
         self.hostname = node().split('.')[0]

glances/exports/glances_influxdb2.py

@@ -43,7 +43,7 @@ class Export(GlancesExport):
             options=['protocol', 'prefix', 'tags'],
         )
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing INFLUXDB version 1 config')
 
         # The hostname is always add as a tag
         self.hostname = node().split('.')[0]

glances/exports/glances_kafka.py

@@ -40,7 +40,7 @@ class Export(GlancesExport):
             'kafka', mandatories=['host', 'port', 'topic'], options=['compression', 'tags']
         )
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing KAFKA config')
 
         # Init the kafka client
         self.client = self.init()

glances/exports/glances_mqtt.py

@@ -12,6 +12,7 @@
 import socket
 import string
 import json
+import sys
 
 from glances.logger import logger
 from glances.exports.glances_export import GlancesExport
@@ -53,10 +54,12 @@ class Export(GlancesExport):
         self.topic_structure = (self.topic_structure or 'per-metric').lower()
         if self.topic_structure not in ['per-metric', 'per-plugin']:
             logger.critical("topic_structure must be either 'per-metric' or 'per-plugin'.")
-            return None
+            sys.exit(2)
 
         # Init the MQTT client
         self.client = self.init()
+        if not self.client:
+            exit('MQTT client initialization failed')
 
     def init(self):
         """Init the connection to the MQTT server."""

glances/exports/glances_opentsdb.py

@@ -37,7 +37,7 @@ class Export(GlancesExport):
         # Load the configuration file
         self.export_enable = self.load_conf('opentsdb', mandatories=['host', 'port'], options=['prefix', 'tags'])
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing OPENTSDB config')
 
         # Default prefix for stats is 'glances'
         if self.prefix is None:

glances/exports/glances_prometheus.py

@@ -32,7 +32,7 @@ class Export(GlancesExport):
         # Load the Prometheus configuration file section
         self.export_enable = self.load_conf('prometheus', mandatories=['host', 'port', 'labels'], options=['prefix'])
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing PROMETHEUS config')
 
         # Optionals configuration keys
         if self.prefix is None:

glances/exports/glances_rabbitmq.py

@@ -44,7 +44,7 @@ class Export(GlancesExport):
             'rabbitmq', mandatories=['host', 'port', 'user', 'password', 'queue'], options=['protocol']
         )
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing RABBITMQ config')
 
         # Get the current hostname
         self.hostname = socket.gethostname()

glances/exports/glances_restful.py

@@ -34,7 +34,7 @@ class Export(GlancesExport):
         # Load the RESTful section in the configuration file
         self.export_enable = self.load_conf('restful', mandatories=['host', 'port', 'protocol', 'path'])
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing RESTFUL config')
 
         # Init the stats buffer
         # It's a dict of stats

glances/exports/glances_riemann.py

@@ -38,7 +38,7 @@ class Export(GlancesExport):
         # Load the Riemann configuration
         self.export_enable = self.load_conf('riemann', mandatories=['host', 'port'], options=[])
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing RIEMANN config')
 
         # Get the current hostname
         self.hostname = socket.gethostname()

glances/exports/glances_statsd.py

@@ -36,7 +36,7 @@ class Export(GlancesExport):
         # Load the configuration file
         self.export_enable = self.load_conf('statsd', mandatories=['host', 'port'], options=['prefix'])
         if not self.export_enable:
-            sys.exit(2)
+            exit('Missing STATSD config')
 
         # Default prefix for stats is 'glances'
         if self.prefix is None:

glances/exports/glances_zeromq.py

@@ -37,7 +37,7 @@ class Export(GlancesExport):
         # 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:
-            sys.exit(2)
+            exit('Missing ZEROMQ config')
 
         # Init the ZeroMQ context
         self.context = None