[Openstack] Using Nova APIs from Javascript: possible?

Adrian Smith adrian at 17od.com
Mon Apr 23 10:10:42 UTC 2012


This is for Swift of course. But I guess there are similar headers for Nova.

On 23 April 2012 11:09, Adrian Smith <adrian at 17od.com> wrote:
> The authentication request returns X-Storage-Url and X-Auth-Token
> headers. For the JS client to see them they need to be referenced in
> Access-Control-Expose-Headers. As of the last time checked, both these
> headers were being stripped from the response before being presented
> to JS.
>
> Adrian
>
>
> On 23 April 2012 10:35, Nick Lothian <nick.lothian at gmail.com> wrote:
>>
>> Hi Adrian,
>>
>> Good to know this is a known issue.
>>
>> Why does the client need to see custom headers from the server anyway?
>> I know the client needs to pass the authorisation header to the server, but
>> I haven't seen any of the APIs yet that return custom headers. (It's likely
>> I'm missing them though)
>>
>> Nick
>>
>> On Apr 23, 2012 5:40 PM, "Adrian Smith" <adrian at 17od.com> wrote:
>>>
>>> Hi Nick,
>>>
>>> I did some work with CORS a few months back [1].
>>>
>>> At the time I couldn't get any browser to work properly with CORS so I
>>> just parked the code. The problem was lack of support for the
>>> Access-Control-Expose-Headers header.
>>>
>>> According to the Chrome bug report [2] this issue may well be fixed
>>> now so I need to retest.
>>>
>>> Adrian
>>>
>>> [1]
>>> http://www.mail-archive.com/openstack@lists.launchpad.net/msg07219.html
>>> [2] http://code.google.com/p/chromium/issues/detail?id=87338
>>>
>>>
>>> On 23 April 2012 06:19, Nick Lothian <nick.lothian at gmail.com> wrote:
>>> > Hi,
>>> >
>>> > I've been playing with the Nova APIs from Javascript, and I've run into
>>> > a
>>> > problem.
>>> >
>>> > The very first thing one needs to do to use the APIs is to get a token.
>>> >
>>> > That requires a POST to the API endpoint. Using curl & trystack that
>>> > looks
>>> > like this:
>>> >
>>> > $ curl -k -X 'POST' -v https://nova-api.trystack.org:5443/v2.0/tokens -d
>>> > '{"auth":{"passwordCredentials":{"username": "<username>",
>>> > "password":"<password>"}}}' -H 'Content-type: application/json'
>>> >
>>> >
>>> > The Javascript equivalent (using JQuery) is:
>>> >
>>> >     $.ajax({
>>> >         url: "https://nova-api.trystack.org:5443/v2.0/tokens",
>>> >         type: 'POST',
>>> >         headers: {"Content-Type": "application/json"},
>>> >         data:  {"auth":{"passwordCredentials":{"username":"<username>",
>>> > "password":"<password>"}}},
>>> >         success: function(data) { alert(data); }
>>> >     });
>>> >
>>> > That fails because the call is cross-domain, and Nova doesn't support
>>> > CORS
>>> > (http://en.wikipedia.org/wiki/Cross-origin_resource_sharing). <script>
>>> > based
>>> > cross-domain requests only supports GET requests, so that doesn't work
>>> > either.
>>> >
>>> > I have raised a bug: https://bugs.launchpad.net/nova/+bug/987044, but
>>> > I'm
>>> > really hoping someone can point out something obvious I'm missing here.
>>> >
>>> > Regards
>>> >   Nick Lothian
>>> >
>>> > _______________________________________________
>>> > Mailing list: https://launchpad.net/~openstack
>>> > Post to     : openstack at lists.launchpad.net
>>> > Unsubscribe : https://launchpad.net/~openstack
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>>> >
>>
>>
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