Add nova and keystone plugin for openstack essex

plugins/keystone/keystone_stats

@@ -0,0 +1,91 @@
+#!/usr/bin/env python
+#
+# Plugin to monitor status of Keystone
+#
+# Needs following minimal configuration in plugin-conf.d/keystone:
+#   [keystone_*]
+#   user keystone
+#
+# Magic markers
+#%# capabilities=autoconf
+#%# family=keystone
+
+import sys
+
+from keystone.common import utils
+from keystone import config
+from keystone import exception
+from keystone import identity
+
+CONF = config.CONF
+
+stats = ['users', 'tenants']
+
+
+def print_config():
+    global states
+    print 'graph_title Keystone Stats'
+    print 'graph_vlabel count'
+    print 'graph_args --base 1000 --lower-limit 0'
+    print 'graph_category keystone'
+    print 'graph_scale no'
+    print 'graph_info This graph shows stats about keystone: ' + (', ').join(stats)
+    for field in stats:
+        print '%s_enabled.label enabled %s' % (field, field)
+        print '%s_enabled.draw LINE2' % field
+        print '%s_enabled.info %s enabled' % (field, field)
+        print '%s_total.label total %s' % (field, field)
+        print '%s_total.draw LINE2' % field
+        print '%s_total.info %s total' % (field, field)
+
+
+def get_status():
+    enabled = {}
+    total = {}
+    for k in stats:
+        enabled[k] = 0
+        total[k] = 0
+
+    identity_api = identity.Manager()
+
+    for user in identity_api.list_users(None):
+        total['users'] += 1
+        if user['enabled']:
+            enabled['users'] += 1
+    
+    # Ldap and  pam driver don't support get_all_tenants()
+    # kvs and sql implement get_tenants() instead of get_all_tenants()
+    # Whoo: None of backend implements the correct function
+    tenants = []
+    for api_func in [ 'get_all_tenants', 'get_tenants']:
+        try:
+            tenants = getattr(identity_api, api_func)(None)
+        except exception.NotImplemented, NotImplementedError:
+            pass
+
+
+    for tenant in tenants:
+        total['tenants'] += 1
+        if tenant['enabled']:
+            enabled['tenants'] += 1
+
+    return {'enabled': enabled, 'total': total}
+
+
+def print_values():
+    stats = get_status()
+    for state in stats.keys():
+        for (field, value) in stats[state].iteritems():
+            print "%s_%s.value %s" % (field, state, value)
+
+
+if __name__ == '__main__':
+    if len(sys.argv) > 1:
+        if sys.argv[1] == "config":
+            print_config()
+        elif sys.argv[1] == "autoconf":
+            print "yes"
+    else:
+        CONF(config_files=[utils.find_config('keystone.conf')])
+        print_values()
+