From cdca16ba93e874e6fcc736731d379e0bde7a6f88 Mon Sep 17 00:00:00 2001
From: Narayan Desai <desai@mcs.anl.gov>
Date: Fri, 29 Oct 2004 15:13:44 +0000
Subject: Rename: src/lib/Server/Structures/bundler.py ->
 src/lib/Server/Structures/Bundler.py

(Logical change 1.123)


git-svn-id: https://svn.mcs.anl.gov/repos/bcfg/trunk/bcfg2@551 ce84e21b-d406-0410-9b95-82705330c041
---
 src/lib/Server/Structures/Bundler.py | 92 ++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)

(limited to 'src')

diff --git a/src/lib/Server/Structures/Bundler.py b/src/lib/Server/Structures/Bundler.py
index e69de29bb..c9409895b 100644
--- a/src/lib/Server/Structures/Bundler.py
+++ b/src/lib/Server/Structures/Bundler.py
@@ -0,0 +1,92 @@
+#!/usr/bin/env python
+
+'''This provides bundle clauses with translation functionality'''
+__revision__ = '$Revision$'
+
+from copy import deepcopy
+from syslog import LOG_ERR, syslog
+
+from Bcfg2.Server.Generator import SingleXMLFileBacked, XMLFileBacked, DirectoryBacked
+from Bcfg2.Server.Structure import Structure
+
+from elementtree.ElementTree import Element, XML
+
+class ImageFile(SingleXMLFileBacked):
+    '''This file contains image -> system mappings'''
+    def Index(self):
+        '''Build data structures out of the data'''
+        a = XML(self.data)
+        self.attr = a.attrib
+        self.entries = a.getchildren()
+        self.images = {}
+        for child in self.entries:
+            [name, pkg, service] = [child.get(x) for x in ['name', 'package', 'service']]
+            for grandchild in child.getchildren():
+                self.images[grandchild.get('name')] = (name, pkg, service)
+
+class Bundle(XMLFileBacked):
+    def Index(self):
+        x = XML(self.data)
+        # scan self.entries to build partial bundle fragments
+        self.all = []
+        self.systems = {}
+        self.attributes = {}
+        for entry in x.getchildren():
+            if entry.tag == 'System':
+                self.systems[entry.attrib['name']] = entry.getchildren()
+            elif entry.tag == 'Attribute':
+                self.attributes["%s.%s" % (entry.get('scope'), entry.get('name'))] = entry.getchildren()
+            else:
+                self.all.append(entry)
+        del self.data
+
+    def BuildBundle(self, metadata, system):
+        bundlename = self.name.split('/')[-1]
+        b = Element('Bundle', name=bundlename)
+        for entry in self.all + self.systems.get(system, []):
+            b.append(deepcopy(entry))
+        for attribute in metadata.attributes:
+            for entry in self.attributes.get(attribute, []):
+                b.append(deepcopy(entry))
+        return b
+            
+class BundleSet(DirectoryBacked):
+    '''The Bundler handles creation of dependent clauses based on bundle definitions'''
+    __child__ = Bundle
+
+class Bundler(Structure):
+    __name__ =  'Bundler'
+    __version__ = '$Id$'
+    
+    '''The bundler creates dependent clauses based on the bundle/translation scheme from bcfg1'''
+    def __init__(self, core, datastore):
+        Structure.__init__(self, core, datastore)
+        self.imageinfo = ImageFile("%s/etc/imageinfo.xml"%(datastore), self.core.fam)
+        self.bundles = BundleSet(self.data, self.core.fam)
+
+    def Construct(self, metadata):
+        (system, package, service) = self.GetTransInfo(metadata)
+        bundleset = []
+        for bundlename in metadata.bundles:
+            if not self.bundles.entries.has_key("%s.xml"%(bundlename)):
+                syslog(LOG_ERR, "Client %s requested nonexistent bundle %s"%(metadata.hostname, bundlename))
+                continue
+
+            bundle = self.bundles.entries["%s.xml" % (bundlename)].BuildBundle(metadata, system)
+            # now we need to populate service/package types
+            for entry in bundle.getchildren():
+                if entry.tag == 'Package':
+                    entry.attrib['type'] = package
+                elif entry.tag == 'Service':
+                    entry.attrib['type'] = service
+            bundleset.append(bundle)
+        return bundleset
+
+    def GetTransInfo(self, metadata):
+        if self.imageinfo.images.has_key(metadata.image):
+            return self.imageinfo.images[metadata.image]
+        else:
+            raise KeyError, metadata.image
+
+    
+
-- 
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