SaltStack cmd.run with curl and json body - jinja2

Question

I have a trivial task that I am stuck to write salt state for. I need to call REST endpoint using curl with json body. This is
curl localhost/endpoint -d '{"some" : "data"}'
My idea was to simply take this and put it into salt state by using cmd.run. Does not work. So far I have this:
{%- set data = {'some': 'data'} %}
Use echo instead of curl:
cmd.run:
- name: echo '{{ data|json }}'
And this gives me
failed: Unknown yaml render error; line 5
Use echo instead of curl:
cmd.run:
- name: echo '{"some": "data"}' <======================
I have Salt version 2014.7.1

Answer 1

For me the problem was the ":" within the curl command that was interpreted as YAML (see: How to escape indicator characters (i.e. : or - ) in YAML)
I ended up using the multi-line approach. That allows me to write the command with no escaping while variables (e.g pillar data) are still interpreted correctly.
E.g.
Salt state description:
cmd.run:
- name: >-
curl -X GET "https://api.example.com/client/{{ pillar['client_id'] }}" -H "X-Auth-Email: name#example.co.za" -H "X-Auth-Key: {{ pillar['api_key'] }}" -H "Content-Type: application/json" --data '{"some_json":true}'

Answer 2

When working with json it is sometimes easier to avoid the jinja renderer altogether. The following example uses the pybojects renderer (which is nice for a lot of other reasons too).
echo.sls:
#!pyobjects
import json
data = {'some': 'data'}
def dump(d):
return "'" + json.dumps(d).replace("'", "'\\''") + "'"
Cmd.run("echo {}".format(dump(data)))
Note that the custom dump function definition and usage is added for the sake of completeness.