better support for re-reading packages.conf (and SimpleConfigs in general)

3 files changed, 32 insertions, 15 deletions

diff --git a/src/lib/Bcfg2/Server/Plugin.py b/src/lib/Bcfg2/Server/Plugin.py
index 11e6c5c20..41314bbea 100644
--- a/src/lib/Bcfg2/Server/Plugin.py
+++ b/src/lib/Bcfg2/Server/Plugin.py
@@ -4,7 +4,6 @@ import copy
 import logging
 import lxml.etree
 import os
-import os.path
 import pickle
 import posixpath
 import re
@@ -1202,6 +1201,7 @@ class SimpleConfig(FileBacked,
         filename = os.path.join(plugin.data, plugin.name.lower() + ".conf")
         self.plugin = plugin
         self.fam = self.plugin.core.fam
+        self.read_files = set()
         Bcfg2.Server.Plugin.FileBacked.__init__(self, filename)
         ConfigParser.SafeConfigParser.__init__(self)
 
@@ -1213,7 +1213,7 @@ class SimpleConfig(FileBacked,
         """ Build local data structures """
         for section in self.sections():
             self.remove_section(section)
-        self.read(self.name)
+        self.read_files.update(self.read(self.name))
 
     def get(self, section, option, **kwargs):
         """ convenience method for getting config items """
@@ -1245,3 +1245,11 @@ class SimpleConfig(FileBacked,
                 return default
             else:
                 raise
+
+    @property
+    def loaded(self):
+        if os.path.exists(self.name):
+            return self.name in self.read_files
+        else:
+            return True
+            
diff --git a/src/lib/Bcfg2/Server/Plugins/Packages/PackagesSources.py b/src/lib/Bcfg2/Server/Plugins/Packages/PackagesSources.py
index 8d0067b6a..a966268c0 100644
--- a/src/lib/Bcfg2/Server/Plugins/Packages/PackagesSources.py
+++ b/src/lib/Bcfg2/Server/Plugins/Packages/PackagesSources.py
@@ -35,7 +35,6 @@ class PackagesSources(Bcfg2.Server.Plugin.SingleXMLFileBacked,
                                   (self.cachepath, err))
         self.pkg_obj = packages
         self.parsed = set()
-        self.loaded = False
 
     def toggle_debug(self):
         Bcfg2.Server.Plugin.Debuggable.toggle_debug(self)
@@ -57,10 +56,13 @@ class PackagesSources(Bcfg2.Server.Plugin.SingleXMLFileBacked,
                     self.parsed.add(fname)
                     break
 
-        if sorted(list(self.parsed)) == sorted(self.extras):
+        if self.config.loaded and self.loaded:
             self.logger.info("Reloading Packages plugin")
             self.pkg_obj.Reload()
-            self.loaded = True
+
+    @property
+    def loaded(self):
+        return sorted(list(self.parsed)) == sorted(self.extras)
 
     def Index(self):
         Bcfg2.Server.Plugin.SingleXMLFileBacked.Index(self)
diff --git a/src/lib/Bcfg2/Server/Plugins/Packages/Yum.py b/src/lib/Bcfg2/Server/Plugins/Packages/Yum.py
index 85eadafb3..941203db3 100644
--- a/src/lib/Bcfg2/Server/Plugins/Packages/Yum.py
+++ b/src/lib/Bcfg2/Server/Plugins/Packages/Yum.py
@@ -15,6 +15,7 @@ from Bcfg2.Bcfg2Py3k import StringIO, cPickle, HTTPError, ConfigParser, file
 from Bcfg2.Server.Plugins.Packages.Collection import Collection
 from Bcfg2.Server.Plugins.Packages.Source import SourceInitError, Source, \
      fetch_url
+from Bcfg2.Server.Plugins.Packages.PackagesConfig import PackagesConfig
 
 logger = logging.getLogger(__name__)
 
@@ -91,12 +92,9 @@ class YumCollection(Collection):
         self.keypath = os.path.join(self.basepath, "keys")
 
         if len(sources):
-            config = sources[0].config
-            self.use_yum = has_yum and config.getboolean("yum",
-                                                         "use_yum_libraries",
-                                                         default=False)
+            self.config = sources[0].config
         else:
-            self.use_yum = False
+            self.config = PackageConfig('Packages')
 
         if self.use_yum:
             self.cachefile = os.path.join(self.cachepath,
@@ -110,13 +108,20 @@ class YumCollection(Collection):
             self.cfgfile = os.path.join(self.configdir,
                                         "%s-yum.conf" % self.cachekey)
             self.write_config()
-
-            self.helper = self.config.get("yum", "helper",
-                                          default="/usr/sbin/bcfg2-yum-helper")
         if has_pulp and self.has_pulp_sources:
             _setup_pulp(self.config)
 
     @property
+    def helper(self):
+        return self.config.get("yum", "helper",
+                               default="/usr/sbin/bcfg2-yum-helper")
+
+    @property
+    def use_yum(self):
+        return has_yum and self.config.getboolean("yum", "use_yum_libraries",
+                                                  default=False)
+
+    @property
     def has_pulp_sources(self):
         """ see if there are any pulp sources to handle """
         for source in self.sources:
@@ -492,8 +497,10 @@ class YumSource(Source):
         self.needed_paths = set()
         self.file_to_arch = dict()
 
-        self.use_yum = has_yum and config.getboolean("yum", "use_yum_libraries",
-                                                     default=False)
+    @property
+    def use_yum(self):
+        return has_yum and self.config.getboolean("yum", "use_yum_libraries",
+                                                  default=False)
 
     def save_state(self):
         if not self.use_yum: