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[Qin Zhao <chaochin@xxxxxxxxx>]

Public bug reported:

When I post an 'attach interface' request to Nova with an invalid port
id, Nova returns an HTTP 500 error and a confusing error message.

REQ: curl -i 'http://10.104.0.214:8774/v2/b6a08719633d416da2d12265debac838/servers/fd21141e-4fb6-4e2a-9638-f37efe854003/os-interface' -X POST -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: python-novaclient" -H "X-Auth-Project-Id: admin" -H "X-Auth-Token: {SHA1}af2fe67d675d5d1c6fb5f55278cbcd98dd83afc5" -d '{"interfaceAttachment": {"port_id": "c510a9f3-5f45-4e96-8545-54acbbecb2c1"}}'
INFO (connectionpool:203) Starting new HTTP connection (1): 10.104.0.214
DEBUG (connectionpool:295) "POST /v2/b6a08719633d416da2d12265debac838/servers/fd21141e-4fb6-4e2a-9638-f37efe854003/os-interface HTTP/1.1" 500 128
RESP: [500] {'date': 'Fri, 17 Oct 2014 05:09:38 GMT', 'content-length': '128', 'content-type': 'application/json; charset=UTF-8'}
RESP BODY: {"computeFault": {"message": "The server has either erred or is incapable of performing the requested operation.", "code": 500}}

In fact, Nova works perfect well. The error is caused by my incorrect
input. Nova should be able to address this incorrect input, and return
an HTTP 400 error in order to to inform the user to correct the request.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1382343

Title:
  HTTP 500 is returned when using an invalid port id to attach interface

Status in OpenStack Compute (Nova):
  New

Bug description:
  When I post an 'attach interface' request to Nova with an invalid port
  id, Nova returns an HTTP 500 error and a confusing error message.

  REQ: curl -i 'http://10.104.0.214:8774/v2/b6a08719633d416da2d12265debac838/servers/fd21141e-4fb6-4e2a-9638-f37efe854003/os-interface' -X POST -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: python-novaclient" -H "X-Auth-Project-Id: admin" -H "X-Auth-Token: {SHA1}af2fe67d675d5d1c6fb5f55278cbcd98dd83afc5" -d '{"interfaceAttachment": {"port_id": "c510a9f3-5f45-4e96-8545-54acbbecb2c1"}}'
  INFO (connectionpool:203) Starting new HTTP connection (1): 10.104.0.214
  DEBUG (connectionpool:295) "POST /v2/b6a08719633d416da2d12265debac838/servers/fd21141e-4fb6-4e2a-9638-f37efe854003/os-interface HTTP/1.1" 500 128
  RESP: [500] {'date': 'Fri, 17 Oct 2014 05:09:38 GMT', 'content-length': '128', 'content-type': 'application/json; charset=UTF-8'}
  RESP BODY: {"computeFault": {"message": "The server has either erred or is incapable of performing the requested operation.", "code": 500}}

  In fact, Nova works perfect well. The error is caused by my incorrect
  input. Nova should be able to address this incorrect input, and return
  an HTTP 400 error in order to to inform the user to correct the
  request.

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