Introduce new fedmsg nagios checks from Janez Nemanic.

See https://fedorahosted.org/fedora-infrastructure/ticket/4044

roles/nagios_client/files/scripts/check_fedmsg_consumer_exceptions.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+
+import json
+import os
+import socket
+import sys
+import zmq
+
+try:
+    service = sys.argv[1]
+    check_consumer = sys.argv[2]
+    exceptions_warning = sys.argv[3]
+    exceptions_critical = sys.argv[4]
+    fname = '/var/run/fedmsg/monitoring-%s.socket' % service
+    if not os.path.exists(fname):
+        print "UNKNOWN - %s does not exist" % fname
+        sys.exit(3)
+    connect_to = "ipc:///%s" % fname
+    ctx = zmq.Context()
+    s = ctx.socket(zmq.SUB)
+    s.connect(connect_to)
+    s.setsockopt(zmq.SUBSCRIBE, '')
+    msg = s.recv()
+    msg = json.loads(msg)
+
+    for consumer in msg['consumers']:
+        if consumer['name'] == check_consumer:
+            if consumer['exceptions'] > exceptions_critical:         
+                print 'CRITICAL: fedmsg consumer %s exceptions value is %i' % (consumer['name'],consumer['exceptions'])
+                sys.exit(2)
+            elif consumer['exceptions'] > exceptions_warning:
+                print 'WARNING: fedmsg consumer %s exceptions value is %i' % (consumer['name'],consumer['exceptions'])
+                sys.exit(1)
+            else:
+                print 'OK: fedmsg consumer %s exceptions value is %i' % (consumer['name'],consumer['exceptions'])
+                sys.exit(0)
+
+except Exception as err:
+    print "UNKNOWN:", str(err)
+    sys.exit(3)