HEAT - Validation of a template does not display the correct error message

[Sayaji Patil]

If the heat template from a file source does not have the right syntax, the error displayed in horizon is
"An unknown problem occurred validating the template."

Heat engine is returning an error with an error message but that message is not propagated to the end user.
This is what I see in the horizon logs

HTTP/1.1 400 Bad Request
date: Wed, 18 Dec 2013 18:55:45 GMT
content-length: 769
content-type: application/json; charset=UTF-8

{"explanation": "At least one Resources member must be defined.", "code": 400, "error": {"message": "At least one Resources member must be defined.", "traceback": " File \"/usr/lib/python2.6/site-packages/heat/common/wsgi.py\", line 661, in __call__\n request, **action_args)\n File \"/usr/lib/python2.6/site-packages/heat/common/wsgi.py\", line 729, in dispatch\n return method(*args, **kwargs)\n File \"/usr/lib/python2.6/site-packages/heat/api/openstack/v1/util.py\", line 30, in handle_stack_method\n return handler(controller, req, **kwargs)\n File \"/usr/lib/python2.6/site-packages/heat/api/openstack/v1/stacks.py\", line 317, in validate_template\n raise exc.HTTPBadRequest(result['Error'])\n", "type": "HTTPBadRequest"}, "title": "Bad Request"}

2013-12-18 18:55:45,328 4601 ERROR openstack_dashboard.dashboards.project.stacks.forms <django.utils.functional.__proxy__ object at 0x7fdf0c4dab50>
Traceback (most recent call last):
  File "/usr/share/openstack-dashboard/openstack_dashboard/wsgi/../../openstack_dashboard/dashboards/project/stacks/forms.py", line 139, in clean
    validated = api.heat.template_validate(self.request, **kwargs)
  File "/usr/share/openstack-dashboard/openstack_dashboard/wsgi/../../openstack_dashboard/api/heat.py", line 88, in template_validate
    return heatclient(request).stacks.validate(**kwargs)
  File "/usr/lib/python2.6/site-packages/heatclient/v1/stacks.py", line 147, in validate
    resp, body = self.api.json_request('POST', '/validate', body=kwargs)
  File "/usr/lib/python2.6/site-packages/heatclient/common/http.py", line 210, in json_request
    resp, body_str = self._http_request(url, method, **kwargs)
  File "/usr/lib/python2.6/site-packages/heatclient/common/http.py", line 175, in _http_request
    raise exc.from_response(resp, body_str)
HTTPBadRequest: ERROR: At least one Resources member must be defined.

In this case horizon should display some message like "ERROR: At least one Resources member must be defined"

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/63678

[Ethan Lynn (ethanlynn)]

Is this bug still in progress? I also met this problem. I think it's a horizon's bug.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Matthias Runge (<email address hidden>) on branch: master
Review: https://review.openstack.org/63678
Reason: no response for a long time, 2 negative votes

[Matthias Runge (mrunge)]

Re-Assigning after long inactivity

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/367254

[OpenStack Infra (hudson-openstack)]

Change abandoned by Rob Cresswell (<email address hidden>) on branch: master
Review: https://review.openstack.org/367254
Reason: Abandoned due to inactivity

[Akihiro Motoki (amotoki)]

heat panel is split out to heat-dashboard. Retargeting to heat-dashboard.