Use JSON import for environment variables

The env can be provided as a JSON list `[{"name": "PORT", "value": "8080"}]`.
The `dict2items` filter provided by ansible is _almost_ what we want, but it
keeps the value original types (a boolean is kept as a boolean in the JSON value).
Since environment variables are strings and `clever-tools` does not want to make
the implicit coercion for us, we need to do it ourselves.

1 files changed, 8 insertions, 0 deletions

diff --git a/filter_plugins/env_json_map.py b/filter_plugins/env_json_map.py
new file mode 100644
index 0000000..790dea0
--- /dev/null
+++ b/filter_plugins/env_json_map.py
@@ -0,0 +1,8 @@
+#!/usr/bin/env python
+
+class FilterModule(object):
+  def filters(self):
+      return {'json_env_map': self.json_env_map}
+
+  def json_env_map(self, env):
+      return [{'name': k, 'value': str(v)} for k,v in env.items()]