Cherry-pick from release-0.3:

*Version bump to 0.3
 *Add delays before reconnect to RabbitMQ

Change-Id: Ia66eab17e0df5b41d7d60dc302c88e0ed08ff401

muranoapi/common/service.py

@@ -52,6 +52,7 @@ class TaskResultHandlerService(service.Service):
         return MqClient(**connection_params)
 
     def _handle_results(self):
+        reconnect_delay = 1
         while True:
             try:
                 with self._create_mq_client() as mqClient:
@@ -59,6 +60,7 @@ class TaskResultHandlerService(service.Service):
                                      enable_ha=True)
                     with mqClient.open(conf.results_queue,
                                        prefetch_count=100) as results_sb:
+                        reconnect_delay = 1
                         while True:
                             result = results_sb.get_message(timeout=1)
                             if result:
@@ -66,7 +68,11 @@ class TaskResultHandlerService(service.Service):
             except Exception as ex:
                 log.exception(ex)
 
+                eventlet.sleep(reconnect_delay)
+                reconnect_delay = min(reconnect_delay * 2, 60)
+
     def _handle_reports(self):
+        reconnect_delay = 1
         while True:
             try:
                 with self._create_mq_client() as mqClient:
@@ -74,6 +80,7 @@ class TaskResultHandlerService(service.Service):
                                      enable_ha=True)
                     with mqClient.open(conf.reports_queue,
                                        prefetch_count=100) as reports_sb:
+                        reconnect_delay = 1
                         while True:
                             report = reports_sb.get_message(timeout=1)
                             if report:
@@ -81,6 +88,9 @@ class TaskResultHandlerService(service.Service):
             except Exception as ex:
                 log.exception(ex)
 
+                eventlet.sleep(reconnect_delay)
+                reconnect_delay = min(reconnect_delay * 2, 60)
+
 
 @handle
 def handle_result(message):

requirements.txt

@@ -32,3 +32,4 @@ python-keystoneclient>=0.4.1
 oslo.config>=1.2.0
 # Please, revert to murano-common>=x.x.x before release
 http://tarballs.openstack.org/murano-common/murano-common-master.tar.gz#egg=murano-common-0.4
+

setup.cfg

@@ -15,7 +15,7 @@
 
 [metadata]
 name = murano-api
-version = 0.2
+version = 0.3
 summary = Murano API
 description-file =
     README.rst