Add debug log messages

Signed-off-by: Francesco Pace <pace.francesco.g@gmail.com>

zoe_master/plugins/connectors.py

@@ -12,10 +12,13 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
+import logging
 import pika
 
 
+log = logging.getLogger(__name__)
+
+
 class RabbitMQ:
     def __init__(self, username, password, host):
         self.username = username
@@ -24,11 +27,13 @@ class RabbitMQ:
         self.channel = None
 
     def open_connection(self):
+        log.debug("Opening connection to RabbitMQ: {}".format(self.host))
         credentials = pika.PlainCredentials(self.username, self.password)
         connection = pika.BlockingConnection(pika.ConnectionParameters(self.host, credentials=credentials))
         self.channel = connection.channel()
 
     def send_message(self, queue, message):
+        log.debug("Sending message to RabbitMQ. Message -> {} // Queue -> {}".format(message, queue))
         self.channel.basic_publish(exchange='',
                                    routing_key=queue,
                                    body=message)

zoe_master/plugins/storage/crystal.py

@@ -12,9 +12,12 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import logging
 
 from zoe_master.plugins.connectors import RabbitMQ
 
+log = logging.getLogger(__name__)
+
 
 class Crystal:
     def __init__(self, channel):
@@ -23,6 +26,7 @@ class Crystal:
     def transmit_policy(self, tenant, policy):
         message = "{}:{}".format(tenant, policy)
         if self.channel['protocol'] is 'rabbitmq':
+            log.debug("Transmitting policy to Crystal via RabbitMQ")
             rmq = RabbitMQ(self.channel['username'], self.channel['password'], self.channel['host'])
             rmq.open_connection()
             rmq.send_message(self.channel['queue'], message)

zoe_master/scheduler/scheduler.py

@@ -113,6 +113,7 @@ class ZoeSimpleScheduler(ZoeBaseScheduler):
                     if 'storage' in plugins:
                         for plugin in plugins['storage']:
                             if plugin['name'] is 'crystal':
+                                log.debug("Transmitting policy to Storage Plugin: Crystal")
                                 Crystal(plugin['channel']).transmit_policy(plugin['tenant'], plugin['policy'])
 
             except ZoeStartExecutionRetryException as ex: