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From "Marios Andreou (JIRA)" <>
Subject [jira] [Commented] (DTACLOUD-351) fgcp: serverType for FWs changed to 'firewall' which is not in server type list
Date Wed, 24 Oct 2012 13:50:12 GMT


Marios Andreou commented on DTACLOUD-351:

Hi Dies - I understand the problem with the async 'stop first then destroy' for firewalls
but I have some comments/questions:

1. Can you clarify a little about why firewalls should be removed altogether from the instances
list? (just to help me understand)

2. Why can you not just use 'stop_instance' call to stop the firewall first - i.e. as before?
Sure, this firewall will not show up in the list of 'instances', but it's still 'there' -
and looking at your 'stop_instance' code, the provision is still there to stop the firewall.
This would have to be documented under 'driver specific notes' for example.

3. Regarding the response code - I don't 5XX code is appropriate here as they are for server
errors. The best fit I think is something like '202 Accepted' which exactly means  "request
has been accepted for processing, but the processing has not been completed. The request might
or might not eventually be acted upon, as it might be disallowed when processing actually
takes place.". But in any case - we cannot return a different status code for a given operation.
As in, the current 'destroy_firewall' op returns a '202' - and this happens at a Deltacloud
server level rather than at a driver level (i.e. we don't set status code in a driver as the
response must be uniform across drivers). Depending on whether my suggestion in 2. above is
acceptable we will need to discuss/explore solutions here further.

4. Just a note - regarding your 'on exceptions' block. You can 'chain' exceptions together,

1326     on /ALREADY_STARTED/ do$
1327       status 405 # Method Not Allowed$
1328     end$
1329 $
1330     # trying to start a running vserver, etc.$
1331     on /ILLEGAL_STATE/ do$
1332       status 405 # Method Not Allowed$
1333     end$

can become:

  status 405
> fgcp: serverType for FWs changed to 'firewall' which is not in server type list
> -------------------------------------------------------------------------------
>                 Key: DTACLOUD-351
>                 URL:
>             Project: DeltaCloud
>          Issue Type: Bug
>          Components: Server
>         Environment: fgcp
>            Reporter: Dies Koper
>            Assignee: Marios Andreou
>         Attachments: 0001-fgcp-take-fw-out-of-instance-list.patch
> fgcp API changed: it now returns 'firewall' for FWs, which is not listed in server type
> This causes issues for cimi /machines API which cross-references with hardware_profiles
> Better to remove FW instances from instance list altogether.

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