dev@glassfish.java.net

Re: spec for http admin api for v3?

From: Ludovic Champenois <Ludovic.Champenois_at_Sun.COM>
Date: Fri, 01 Feb 2008 11:29:19 -0800

Peter Williams wrote:
> Sorry for starting this. The name really had nothing to do with my
> original question.
>
> I agree the protocol is not particularly REST like in the regards
> already mentioned.
>
> Being similar or the same as CLI asadmin commands is probably more
> valuable for the familiarity than adhering strictly to design pattern,
> however useful that patten might be in it's own right.
>
> I changed header to "http admin api"...

Let's go back to the original intent of this thread.
Today, 2 leading IDEs (NetBeans 6.x and Eclipse 3.x) have GlassFish V3
plugins that *do* rely on these URL apis to communicate to a V3 server.
So in a sense this is an exposed interface (maybe not stable, but this
is not the point).
We are using it, so please if this is going to change, we need to be
warned in advance.

Thanks,
Ludo
>
> -Peter
>
> Lloyd L Chambers wrote:
>> Well, perhaps let's not call it REST then.
>>
>> I think of it as a "command line in a browser". I LIKE the fact that
>> it is very similar to using the 'asadmin' CLI, including identical
>> command names and option names. I think it would be a huge mistake
>> to introduce an entirely new set of names for commands and options.
>>
>> Lloyd
>>
>> On Feb 1, 2008, at 5:31 AM, Paul Sandoz wrote:
>>
>>> Jakub Podlesak wrote:
>>>> On Thu, Jan 31, 2008 at 07:25:01PM -0800, Peter Williams wrote:
>>>>> Is there a document detailing the inputs & outputs for V3's REST api?
>>>>>
>>>>> I found the one here:
>>>>> http://wiki.glassfish.java.net/Wiki.jsp?page=V3AdminCommands
>>>> the above described api doesn't look very RESTfully.
>>>> It uses verbs to specify methods in URIs. It is probably fine as
>>>> long as it is not called REST api.
>>>
>>> Agreed. Although from the documentation i don't think it makes any
>>> claims to be :-) Although i would strongly encourage that we make it
>>> a RESTful API.
>>>
>>> From this documentation it is not clear what the actual HTTP method
>>> is used with the URIs, GET or POST? if the former then it is very
>>> unRESTful and breaks the semantics of the HTTP GET method which
>>> should not have unintended side effects (imagine a web crawler
>>> traversing such URIs and unintentionally causing side-effects, or
>>> reloading the URI in a browser, or clicking in such a URI in a email
>>> message).
>>>
>>> IMHO i think it possible to create a nice RESTful API that is easy
>>> to use by both machines and browsers. We could even create some WADL
>>> for it and transform that to some nice documentation [1].
>>>
>>> For example:
>>>
>>> // get the list of applications
>>> // returns a list of URIs for each application
>>> // use query param to limit scope of list
>>> GET http://localhost:8080/__asadmin/applications
>>>
>>> // Deploy new application
>>> POST http://localhost:8080/__asadmin/applications
>>> // use application/x-www-form-urlencoded
>>> // or multipart/form-data
>>>
>>> // GET the state of an application 1
>>> GET http://localhost:8080/__asadmin/applications/1
>>>
>>> // Undeploy the application
>>> DELETE http://localhost:8080/__asadmin/applications/1
>>>
>>> // Redeploy the application
>>> PUT http://localhost:8080/__asadmin/applications/1
>>> // use application/x-www-form-urlencoded
>>> // or multipart/form-data
>>>
>>> // get the list of modules
>>> // returns a list of URIs for each module
>>> GET http://localhost:8080/__asadmin/modules
>>>
>>> // get the list of containers
>>> // returns a list of URIs for each containers
>>> GET http://localhost:8080/__asadmin/containers
>>>
>>> // get the version
>>> GET http://localhost:8080/__asadmin/version
>>>
>>> // get the domain state
>>> GET http://localhost:8080/__asadmin/domain
>>>
>>> // get the domain state
>>> PUT http://localhost:8080/__asadmin/domain
>>> // use application/x-www-form-urlencoded
>>>
>>> // get the high-level state of everything
>>> GET http://localhost:8080/__asadmin
>>>
>>>
>>> If using PUT/DELETE are in issue it is possible to wrap them in POST
>>> use a filter on the server side to set the appropriate HTTP method.
>>>
>>> Paul.
>>>
>>> [1] http://www.mnot.net/webdesc/
>>>
>>>> ~Jakub
>>>>> which lists the commands, but I'm really looking for the one where
>>>>> if the "User-agent" is set to "hk2-agent", then specially
>>>>> formatted data is returned (e.g. Manifest format for
>>>>> list-applications, etc) and what the data can be expected to be.
>>>>>
>>>>> If no such document, when and where can I expect to find this
>>>>> information? Or do I have to read the source :o
>>>>>
>>>>> -Peter
>>>>>
>>>>> ---------------------------------------------------------------------
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>>>>>
>>>
>>> --
>>> | ? + ? = To question
>>> ----------------\
>>> Paul Sandoz
>>> x38109
>>> +33-4-76188109
>>>
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>>>
>>
>> ---
>> Lloyd L Chambers
>> lloyd.chambers_at_sun.com
>> Sun Microsystems, Inc
>>
>>
>>
>>
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>>
>
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