add support for callback_plugins/ relative to playbook

lib/ansible/callbacks.py

@@ -41,7 +41,11 @@ if constants.DEFAULT_LOG_PATH != '':
     user = getpass.getuser()
     logger = logging.getLogger("p=%s u=%s | " % (mypid, user))
 
-callback_plugins = [x for x in utils.plugins.callback_loader.all()]
+callback_plugins = []
+
+def load_callback_plugins():
+    global callback_plugins
+    callback_plugins = [x for x in utils.plugins.callback_loader.all()]
 
 def get_cowsay_info():
     if constants.ANSIBLE_NOCOWS is not None:

lib/ansible/playbook/__init__.py

@@ -129,11 +129,13 @@ class PlayBook(object):
             self.inventory    = inventory
 
         self.basedir     = os.path.dirname(playbook) or '.'
+        utils.plugins.push_basedir(self.basedir)
         vars = {}
         if self.inventory.basedir() is not None:
             vars['inventory_dir'] = self.inventory.basedir()
         self.filename = playbook
         (self.playbook, self.play_basedirs) = self._load_playbook_from_file(playbook, vars)
+        ansible.callbacks.load_callback_plugins()
 
     # *****************************************************
 

lib/ansible/utils/plugins.py

@@ -28,6 +28,7 @@ PLUGIN_PATH_CACHE = {}
 _basedirs = []
 
 def push_basedir(basedir):
+    if basedir not in _basedirs:
         _basedirs.insert(0, basedir)
 
 class PluginLoader(object):