From 1a6160ebeecffc57b5066ebf343188edf6a63eaa Mon Sep 17 00:00:00 2001
From: "Chris St. Pierre" <chris.a.st.pierre@gmail.com>
Date: Fri, 12 Oct 2012 11:37:14 -0400
Subject: wrote sphinx docs for base server Core

---
 src/lib/Bcfg2/Server/Plugins/Decisions.py | 88 +++++++++++++++----------------
 1 file changed, 44 insertions(+), 44 deletions(-)

(limited to 'src/lib/Bcfg2/Server/Plugins/Decisions.py')

diff --git a/src/lib/Bcfg2/Server/Plugins/Decisions.py b/src/lib/Bcfg2/Server/Plugins/Decisions.py
index 90d9ecbe3..5521ea045 100644
--- a/src/lib/Bcfg2/Server/Plugins/Decisions.py
+++ b/src/lib/Bcfg2/Server/Plugins/Decisions.py
@@ -1,67 +1,67 @@
-import logging
-import lxml.etree
-import sys
+""" The Decisions plugin provides a flexible method to whitelist or
+blacklist certain entries. """
 
+import os
+import sys
+import lxml.etree
 import Bcfg2.Server.Plugin
-logger = logging.getLogger('Bcfg2.Plugins.Decisions')
+
 
 class DecisionFile(Bcfg2.Server.Plugin.SpecificData):
+    """ Representation of a Decisions XML file """
+
+    def __init__(self, name, specific, encoding):
+        Bcfg2.Server.Plugin.SpecificData.__init__(self, name, specific,
+                                                  encoding)
+        self.contents = None
+
     def handle_event(self, event):
         Bcfg2.Server.Plugin.SpecificData.handle_event(self, event)
         self.contents = lxml.etree.XML(self.data)
 
     def get_decisions(self):
-        return [(x.get('type'), x.get('name')) for x in self.contents.xpath('.//Decision')]
+        """ Get a list of whitelist or blacklist tuples """
+        return [(x.get('type'), x.get('name'))
+                for x in self.contents.xpath('.//Decision')]
 
-class DecisionSet(Bcfg2.Server.Plugin.EntrySet):
-    basename_is_regex = True
 
-    def __init__(self, path, fam, encoding):
-        """Container for decision specification files.
+class Decisions(Bcfg2.Server.Plugin.EntrySet,
+                Bcfg2.Server.Plugin.Plugin,
+                Bcfg2.Server.Plugin.Decision):
+    """ Decisions plugin
 
-        Arguments:
-        - `path`: repository path
-        - `fam`: reference to the file monitor
-        - `encoding`: XML character encoding
+    Arguments:
+    - `core`: Bcfg2.Core instance
+    - `datastore`: File repository location
+    """
+    basename_is_regex = True
+    __author__ = 'bcfg-dev@mcs.anl.gov'
 
-        """
-        Bcfg2.Server.Plugin.EntrySet.__init__(self, '(white|black)list', path,
-                                              DecisionFile, encoding)
+    def __init__(self, core, datastore):
+        Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
+        Bcfg2.Server.Plugin.Decision.__init__(self)
+
+        Bcfg2.Server.Plugin.EntrySet.__init__(self, '(white|black)list',
+                                              self.data,
+                                              DecisionFile,
+                                              core.setup['encoding'])
         try:
-            fam.AddMonitor(path, self)
+            core.fam.AddMonitor(self.data, self)
         except OSError:
-            e = sys.exc_info()[1]
-            logger.error('Adding filemonitor for %s failed. '
-                         'Make sure directory exists' % path)
-            raise Bcfg2.Server.Plugin.PluginInitError(e)
+            err = sys.exc_info()[1]
+            msg = 'Adding filemonitor for %s failed: %s' % (self.data, err)
+            self.logger.error(msg)
+            raise Bcfg2.Server.Plugin.PluginInitError(msg)
 
     def HandleEvent(self, event):
+        """ Handle events on Decision files by passing them off to
+        EntrySet.handle_event """
         if event.filename != self.path:
             return self.handle_event(event)
 
     def GetDecisions(self, metadata, mode):
         ret = []
-        candidates = [c for c in self.get_matching(metadata)
-                      if c.name.split('/')[-1].startswith(mode)]
-        for c in candidates:
-            ret += c.get_decisions()
+        for cdt in self.get_matching(metadata):
+            if os.path.basename(cdt).startswith(mode):
+                ret.extend(cdt.get_decisions())
         return ret
-
-class Decisions(DecisionSet,
-                Bcfg2.Server.Plugin.Plugin,
-                Bcfg2.Server.Plugin.Decision):
-    name = 'Decisions'
-    __author__ = 'bcfg-dev@mcs.anl.gov'
-
-    def __init__(self, core, datastore):
-        """Decisions plugins
-
-        Arguments:
-        - `core`: Bcfg2.Core instance
-        - `datastore`: File repository location
-
-        """
-        Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
-        Bcfg2.Server.Plugin.Decision.__init__(self)
-        DecisionSet.__init__(self, self.data, core.fam, core.encoding)
-
-- 
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