Add local cassandra charm from Tony Liu's machine

Change-Id: I56478233f7498861f95a0c12be983f9a1307853e
Signed-off-by: Stuart Mackie <wsmackie@juniper.net>

1 files changed, 40 insertions, 0 deletions

diff --git a/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/jinja.py b/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/jinja.py
new file mode 100644
index 0000000..c5efb16
--- /dev/null
+++ b/charms/trusty/cassandra/hooks/charmhelpers/contrib/templating/jinja.py
@@ -0,0 +1,40 @@
+# Copyright 2014-2015 Canonical Limited.
+#
+# This file is part of charm-helpers.
+#
+# charm-helpers is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# charm-helpers 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 Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with charm-helpers.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Templating using the python-jinja2 package.
+"""
+import six
+from charmhelpers.fetch import apt_install, apt_update
+try:
+    import jinja2
+except ImportError:
+    apt_update(fatal=True)
+    if six.PY3:
+        apt_install(["python3-jinja2"], fatal=True)
+    else:
+        apt_install(["python-jinja2"], fatal=True)
+    import jinja2
+
+
+DEFAULT_TEMPLATES_DIR = 'templates'
+
+
+def render(template_name, context, template_dir=DEFAULT_TEMPLATES_DIR):
+    templates = jinja2.Environment(
+        loader=jinja2.FileSystemLoader(template_dir))
+    template = templates.get_template(template_name)
+    return template.render(context)