Remove the unused get_targets method of plugin base

As marked in TODO list, the get_targets method need to be removed in
J+2, This change do:

* Remove the get_targets method and relevant test
* Add a test for info method of plugin base

Change-Id: Id4274593ad81b397dd6fcf99737fd349e72ed773

1 files changed, 1 insertions, 12 deletions

diff --git a/ceilometer/agent/plugin_base.py b/ceilometer/agent/plugin_base.py
index c731b555..814f1862 100644
--- a/ceilometer/agent/plugin_base.py
+++ b/ceilometer/agent/plugin_base.py
@@ -104,6 +104,7 @@ class NotificationBase(PluginBase):
         Strings are defining the event types to be given to this plugin.
         """
 
+    @abc.abstractmethod
     def get_targets(self, conf):
         """Return a sequence of oslo.messaging.Target.
 
@@ -112,18 +113,6 @@ class NotificationBase(PluginBase):
         :param conf: Configuration.
         """
 
-        # TODO(sileht): Backwards compatibility, remove in J+2
-        if hasattr(self, 'get_exchange_topics'):
-            LOG.warn(_('get_exchange_topics API of NotificationPlugin is'
-                       'deprecated, implements get_targets instead.'))
-
-            targets = []
-            for exchange, topics in self.get_exchange_topics(conf):
-                targets.extend(oslo_messaging.Target(topic=topic,
-                                                     exchange=exchange)
-                               for topic in topics)
-            return targets
-
     @abc.abstractmethod
     def process_notification(self, message):
         """Return a sequence of Counter instances for the given message.