Various Packages plugin fixes:

* Added bcfg2-yum-helper to offload Yum API calls to a short-lived
  process.  As absurd as this is, it appears to be the standard way to
  get around Yum's atrocious memory handling (cf. yum-updatesd).
* Added SourceInitError for non-fatal errors instantiating new
  sources.
* Fixed bug that caused all cached data to be removed on server
  startup (reported by mikemccllstr on IRC).
* Fixed a number of overly aggressive caching issues.
* Fixed the way sources are loaded at server startup.
* Fixed handling of Yum package groups.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/lib/Server/Plugins/Packages/PackagesConfig.py b/src/lib/Server/Plugins/Packages/PackagesConfig.py
index 1bb250007..d3732bf96 100644
--- a/src/lib/Server/Plugins/Packages/PackagesConfig.py
+++ b/src/lib/Server/Plugins/Packages/PackagesConfig.py
@@ -25,4 +25,9 @@ class PackagesConfig(Bcfg2.Server.Plugin.FileBacked,
         for section in self.sections():
             self.remove_section(section)
         self.read(self.name)
-        self.pkg_obj.Reload()
+        if self.pkg_obj.sources.loaded:
+            # only reload Packages plugin if sources have been loaded.
+            # otherwise, this is getting called on server startup, and
+            # we have to wait until all sources have been indexed
+            # before we can call Packages.Reload()
+            self.pkg_obj.Reload()