implement Manifest and tests

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>

lib/cdist/core/manifest.py

@@ -0,0 +1,94 @@
+# -*- coding: utf-8 -*-
+#
+# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
+# 2011 Nico Schottelius (nico-cdist at schottelius.org)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+import logging
+import os
+
+import cdist
+
+log = logging.getLogger(__name__)
+
+
+'''
+common:
+    runs only locally, does not need remote
+
+    env:
+        PATH: prepend directory with type emulator symlinks == local.bin_path
+        __target_host: the target host we are working on
+        __global: full qualified path to the global output dir == local.out_path
+        __cdist_manifest: full qualified path of the manifest == script
+        __cdist_type_base_path: full qualified path to the directory where types are defined for use in type emulator
+            == local.type_base_path
+
+initial manifest is:
+    script: full qualified path to the initial manifest
+
+    env:
+        __manifest: path to .../conf/manifest/ == local.manifest_path
+
+    creates: new objects through type emulator
+
+type manifeste is:
+    script: full qualified path to the type manifest
+
+    env:
+        __object: full qualified path to the object's dir
+        __object_id: the objects id
+        __object_fq: full qualified object id, iow: $type.name + / + object_id
+        __type: full qualified path to the type's dir
+
+    creates: new objects through type emulator
+'''
+
+
+class Manifest(object):
+    """Represents a cdist manifest.
+
+    """
+    def __init__(self, target_host, local):
+        self.target_host = target_host
+        self.local = local
+        self.env = {
+            'PATH': "%s:%s" % (self.local.bin_path, os.environ['PATH']),
+            '__target_host': self.target_host,
+            '__global': self.local.out_path,
+            '__cdist_type_base_path': self.local.type_base_path, # for use in type emulator
+        }
+
+    def run_initial_manifest(self, script):
+        env = os.environ.copy()
+        env.update(self.env)
+        env['__manifest'] = self.local.manifest_path
+        return self.local.run_script(script, env=env)
+
+    def run_type_manifest(self, cdist_object):
+        env = os.environ.copy()
+        env.update(self.env)
+        env.update({
+            '__object': cdist_object.absolute_path,
+            '__object_id': cdist_object.object_id,
+            '__object_fq': cdist_object.path,
+            '__type': cdist_object.type.absolute_path,
+        })
+        script = os.path.join(self.local.type_base_path, cdist_object.type.manifest_path)
+        return self.local.run_script(script, env=env)