Introduce new fedmsg nagios checks from Janez Nemanic.

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

roles/nagios_client/files/scripts/check_fedmsg_producers_consumers.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+
+import json
+import os
+import socket
+import sys
+import zmq
+
+try:
+    service = sys.argv[1]
+    check_list = frozenset(sys.argv[2:])
+    if not check_list:
+        print "UNKNOWN - empty list of fedmsg consumers and producers to check"
+        sys.exit(3)
+    uninitialized_cp = False
+    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'] in check_list and not consumer['initialized']:
+            print 'ERROR: fedmsg consumer %s is not initialized' % consumer['name']
+            uninitialized_cp = True
+
+    for producer in msg['producers']:
+        if producer['name'] in check_list and not producer['initialized']:
+            print 'ERROR: fedmsg producer %s is not initialized' % producer['name']
+            uninitialized_cp = True
+
+    if uninitialized_cp:
+        sys.exit(2)
+
+    print "OK: fedmsg consumer(s) and producer(s) initialized"
+    sys.exit(0)
+
+except Exception as err:
+    print "UNKNOWN:", str(err)
+    sys.exit(3)