Filter out components not listed in origins file

If component is not mentioned in origins file (like oslo-messaging in
havana-1) this means it is not needed for this origins and it should
be ignored.

Change-Id: I8ce113bd823d6a3d3f1c743b30585af79966720e

anvil/__main__.py

@@ -102,7 +102,7 @@ def run(args):
     # Load + verify the person
     try:
         persona_obj = persona.load(persona_fn)
-        persona_obj.verify(dist)
+        persona_obj.verify(dist, args['origins_fn'])
     except Exception as e:
         raise excp.OptionException("Error loading persona file: %s due to %s" % (persona_fn, e))
 

anvil/components/base_install.py

@@ -20,7 +20,6 @@ from anvil import settings
 from anvil import shell as sh
 from anvil import trace as tr
 from anvil import utils
-import yaml
 
 from anvil.packaging.helpers import pip_helper
 
@@ -144,8 +143,7 @@ class PythonInstallComponent(PkgInstallComponent):
     def download(self):
         """Download sources needed to build the component, if any."""
         target_dir = self.get_option('app_dir')
-        with open(self._origins_fn, 'r') as fh:
-            download_cfg = yaml.safe_load(fh.read()).get(self.name, {})
+        download_cfg = utils.load_yaml(self._origins_fn).get(self.name, {})
         if not target_dir or not download_cfg:
             return []
 

anvil/distro.py

@@ -22,13 +22,12 @@ import platform
 import re
 import shlex
 
-import yaml
-
 from anvil import colorizer
 from anvil import exceptions as excp
 from anvil import importer
 from anvil import log as logging
 from anvil import shell as sh
+from anvil import utils
 
 LOG = logging.getLogger(__name__)
 
@@ -145,12 +144,8 @@ def load(path):
     for fn in input_files:
         LOG.debug("Attempting to load distro definition from %r", fn)
         try:
-            # Don't use sh here so that we always
-            # read this (even if dry-run)
-            with open(fn, 'r') as fh:
-                contents = fh.read()
-                cls_kvs = yaml.safe_load(contents)
-                distro_possibles.append(Distro(**cls_kvs))
-        except (IOError, yaml.YAMLError) as err:
+            cls_kvs = utils.load_yaml(fn)
+        except Exception as err:
             LOG.warning('Could not load distro definition from %r: %s', fn, err)
+        distro_possibles.append(Distro(**cls_kvs))
     return _match_distro(distro_possibles)

anvil/persona.py

@@ -14,9 +14,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import yaml
-
 from anvil import log as logging
+from anvil import utils
 
 LOG = logging.getLogger(__name__)
 
@@ -25,12 +24,18 @@ class Persona(object):
 
     def __init__(self, supports, components, **kargs):
         self.distro_support = supports or []
-        self.wanted_components = components or []
         self.source = kargs.get('source')
+        self.wanted_components = components or []
         self.wanted_subsystems = kargs.get('subsystems') or {}
         self.component_options = kargs.get('options') or {}
 
-    def verify(self, distro):
+    def verify(self, distro, origins_fn):
+        # Filter components out that are not in origins file
+        available_components = set(utils.load_yaml(origins_fn).iterkeys())
+        available_components.add('general')
+        self.wanted_components = [c for c in self.wanted_components
+                                  if c in available_components]
+
         # Some sanity checks against the given distro/persona
         d_name = distro.name
         if d_name not in self.distro_support:
@@ -41,11 +46,7 @@ class Persona(object):
 
 
 def load(fn):
-    # Don't use sh here so that we always
-    # read this (even if dry-run)
-    with open(fn, 'r') as fh:
-        contents = fh.read()
-    cls_kvs = yaml.safe_load(contents)
+    cls_kvs = utils.load_yaml(fn)
     cls_kvs['source'] = fn
     instance = Persona(**cls_kvs)
     return instance