Plugins/PkgVars: new plugin to set various vars per package

This plugins allows the setting of varius flags per package. It should
be used f.e. to specify pinnings for debian packages or use flags and
keywords for gentoo packages (needs to be implemented by future Portage
plugin).

1 files changed, 59 insertions, 0 deletions

diff --git a/src/lib/Bcfg2/Server/Plugins/PkgVars.py b/src/lib/Bcfg2/Server/Plugins/PkgVars.py
new file mode 100644
index 000000000..2bf1b158a
--- /dev/null
+++ b/src/lib/Bcfg2/Server/Plugins/PkgVars.py
@@ -0,0 +1,59 @@
+import os
+import re
+import sys
+import copy
+import logging
+import lxml.etree
+import Bcfg2.Server.Plugin
+
+logger = logging.getLogger('Bcfg2.Plugins.PkgVars')
+vars = ['pin', 'use', 'keywords']
+
+class PkgVarsFile(Bcfg2.Server.Plugin.StructFile):
+    def get_additional_data(self, meta):
+        data = self.Match(meta)
+        results = {}
+        for d in data:
+            name = d.get('name', '')
+
+            for v in vars:
+                value = d.get(v, None)
+                if value:
+                    results[v][name] = value
+
+        return results
+
+class PkgVarsDirectoryBacked(Bcfg2.Server.Plugin.DirectoryBacked):
+    __child__ = PkgVarsFile
+    patterns = re.compile(r'.*\.xml$')
+
+    def get_additional_data(self, meta):
+        results = {}
+        for v in vars:
+            results[v] = {}
+
+        for files in self.entries:
+            new = self.entries[files].get_additional_data(meta)
+            for x in vars:
+                results[x].update(new[x])
+
+        return results
+
+class PkgVars(Bcfg2.Server.Plugin.Plugin,
+              Bcfg2.Server.Plugin.Connector):
+    name = 'PkgVars'
+    version = '$Revision$'
+
+    def __init__(self, core, datastore):
+        Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
+        Bcfg2.Server.Plugin.Connector.__init__(self)
+        try:
+            self.store = PkgVarsDirectoryBacked(self.data, core.fam)
+        except OSError:
+            e = sys.exc_info()[1]
+            self.logger.error("Error while creating PkgVars store: %s %s" %
+                              (e.strerror, e.filename))
+            raise Bcfg2.Server.Plugin.PluginInitError
+
+    def get_additional_data(self, meta):
+        return self.store.get_additional_data(meta)