Wrong exception when get item from nonexistent table

[Oleksandr Minakov]

Request:
POST http://127.0.0.1:8480/v1/default_tenant/data/tables/nonexistenttable/get_item

Request Headers:
{'Content-Type': 'application/json', 'Accept': 'application/json'}

Request Body:
{"consistent_read": true, "attributes_to_get": ["last_posted_by"], "key": {"forum": {"S": "forum1"}, "subject": {"S": "subject2"}}}

Response Status: 500

Response Headers:
{'date': 'Fri, 11 Apr 2014 11:54:09 GMT', 'content-length': '269', 'content-type': 'application/json'}

Response Body:
{"explanation": "The server has either erred or is incapable of performing the requested operation.", "code": 500, "error": {"message": "'NoneType' object has no attribute 'internal_name'", "traceback": null, "type": "AttributeError"}, "title": "Internal Server Error"}

Expected response status: 404

Expected response body:

{
    "explanation": "The resource could not be found."
    "code": 404
    "error":
       {
          "message": "Table 'nonexistenttable' does not exists",
          "traceback": null,
          "type": "TableNotExistsException"
      }
}

[Openstack Gerrit (openstack-gerrit)]

Fix proposed to branch: master
Review: https://review.openstack.org/90705

[Openstack Gerrit (openstack-gerrit)]

Reviewed: https://review.openstack.org/90705
Committed: https://git.openstack.org/cgit/stackforge/magnetodb/commit/?id=bc387119b2256cc8c19a3332d6b758b29b32f5a3
Submitter: Jenkins
Branch: master

commit bc387119b2256cc8c19a3332d6b758b29b32f5a3
Author: Oleksandr Minakov <email address hidden>
Date: Mon Apr 28 15:05:37 2014 +0300

    Add check before get item

    Add check for the existence of the table before get item.
    Add unit test for coverage TableNotExistsException.

    Change-Id: I788d7d5116537e45e01d668a3a24c351d882e093
    Closes-Bug: #1306561