From dab1d03d81c538966d03fb9318a4588a9e803b44 Mon Sep 17 00:00:00 2001
From: Sol Jerome <sol.jerome@gmail.com>
Date: Sat, 24 Mar 2012 11:20:07 -0500
Subject: Allow to run directly from a git checkout (#1037)

Signed-off-by: Sol Jerome <sol.jerome@gmail.com>
---
 src/lib/Bcfg2/Server/Plugins/Bundler.py | 99 +++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 src/lib/Bcfg2/Server/Plugins/Bundler.py

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

diff --git a/src/lib/Bcfg2/Server/Plugins/Bundler.py b/src/lib/Bcfg2/Server/Plugins/Bundler.py
new file mode 100644
index 000000000..ccb99481e
--- /dev/null
+++ b/src/lib/Bcfg2/Server/Plugins/Bundler.py
@@ -0,0 +1,99 @@
+"""This provides bundle clauses with translation functionality."""
+
+import copy
+import lxml.etree
+import os
+import os.path
+import re
+import sys
+
+import Bcfg2.Server.Plugin
+
+try:
+    import genshi.template
+    import genshi.template.base
+    import Bcfg2.Server.Plugins.SGenshi
+    have_genshi = True
+except:
+    have_genshi = False
+
+
+class BundleFile(Bcfg2.Server.Plugin.StructFile):
+
+    def get_xml_value(self, metadata):
+        bundlename = os.path.splitext(os.path.basename(self.name))[0]
+        bundle = lxml.etree.Element('Bundle', name=bundlename)
+        [bundle.append(copy.copy(item)) for item in self.Match(metadata)]
+        return bundle
+
+
+class Bundler(Bcfg2.Server.Plugin.Plugin,
+              Bcfg2.Server.Plugin.Structure,
+              Bcfg2.Server.Plugin.XMLDirectoryBacked):
+    """The bundler creates dependent clauses based on the
+       bundle/translation scheme from Bcfg1.
+    """
+    name = 'Bundler'
+    __author__ = 'bcfg-dev@mcs.anl.gov'
+    patterns = re.compile('^(?P<name>.*)\.(xml|genshi)$')
+
+    def __init__(self, core, datastore):
+        Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
+        Bcfg2.Server.Plugin.Structure.__init__(self)
+        self.encoding = core.encoding
+        self.__child__ = self.template_dispatch
+        try:
+            Bcfg2.Server.Plugin.XMLDirectoryBacked.__init__(self,
+                                                            self.data,
+                                                            self.core.fam)
+        except OSError:
+            self.logger.error("Failed to load Bundle repository")
+            raise Bcfg2.Server.Plugin.PluginInitError
+
+    def template_dispatch(self, name):
+        bundle = lxml.etree.parse(name)
+        nsmap = bundle.getroot().nsmap
+        if name.endswith('.xml'):
+            if have_genshi and \
+               (nsmap == {'py': 'http://genshi.edgewall.org/'}):
+                # allow for genshi bundles with .xml extensions
+                spec = Bcfg2.Server.Plugin.Specificity()
+                return Bcfg2.Server.Plugins.SGenshi.SGenshiTemplateFile(name,
+                                                                        spec,
+                                                                        self.encoding)
+            else:
+                return BundleFile(name)
+        elif name.endswith('.genshi'):
+            if have_genshi:
+                spec = Bcfg2.Server.Plugin.Specificity()
+                return Bcfg2.Server.Plugins.SGenshi.SGenshiTemplateFile(name,
+                                                                        spec,
+                                                                        self.encoding)
+
+    def BuildStructures(self, metadata):
+        """Build all structures for client (metadata)."""
+        bundleset = []
+
+        bundle_entries = {}
+        for key, item in self.entries.items():
+            bundle_entries.setdefault(self.patterns.match(os.path.basename(key)).group('name'),
+                                      []).append(item)
+
+        for bundlename in metadata.bundles:
+            try:
+                entries = bundle_entries[bundlename]
+            except KeyError:
+                self.logger.error("Bundler: Bundle %s does not exist" %
+                                  bundlename)
+                continue
+            try:
+                bundleset.append(entries[0].get_xml_value(metadata))
+            except genshi.template.base.TemplateError:
+                t = sys.exc_info()[1]
+                self.logger.error("Bundler: Failed to template genshi bundle %s"
+                                  % bundlename)
+                self.logger.error(t)
+            except:
+                self.logger.error("Bundler: Unexpected bundler error for %s" %
+                                  bundlename, exc_info=1)
+        return bundleset
-- 
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