Hi again! I am not aware of a guide on how to make a new nova extension, but I will look around. We have a number of extensions which you could use as examples to develop your own extension. If you have questions about implementing it, you can also ask them in the #jclouds channel on IRC (a bit faster for less complex questions). I will let you know if I find some more information about implementing new extensions. ________________________________ From: Bk Lau [bklau2...@gmail.com] Sent: Monday, September 30, 2013 7:30 PM To: user@jclouds.incubator.apache.org Subject: Re: How to bind and work with OpenStack extensions
Zack: You said "It seems to me you might be using getExtensionApiForZone to get a list of the extensions and then use one of these extensions?" Yes, you got it right. I use this to get one of the extension that I want that is implemented by a provider. The extension gives an 'alias' which is typically then use construct a URL and then create a domain class to represent that extension. My original question is : " Does JCloud have any helper classes to allow me to create one of these domain API classes or do I have to wrap my own?". Specifically, if I am a vendor and I want to write a vendor-specific extension JCloud domain API class(for example, SecurityGroupApi) surely JCloud must have a prescribed way to allow a vendor to write such a a domain API object associated with that extension so that everyone conforms to the same pattern. Thanks, /BK On Mon, Sep 30, 2013 at 4:50 PM, Zack Shoylev <zack.shoy...@rackspace.com<mailto:zack.shoy...@rackspace.com>> wrote: Do you mean already implemented extensions, such as the security group extension? I have an example for it here: https://gist.github.com/zack-shoylev/6517903 Or do you need to implement your own extension? It seems to me you might be using getExtensionApiForZone to get a list of the extensions and then use one of these extensions? Is it possible to follow the example above to get the specific extension you want? ________________________________ From: Bk Lau [bklau2...@gmail.com<mailto:bklau2...@gmail.com>] Sent: Monday, September 30, 2013 3:27 PM To: user@jclouds.incubator.apache.org<mailto:user@jclouds.incubator.apache.org> Subject: Re: How to bind and work with OpenStack extensions Zack: Thanks. Those examples shows the specific nova extensions that OpenStack happened to support. What if an openstack implementation have an specific extension and how do I bind to it and use it?. For example, in nova we have: ExtensionApi extApi=novaApi.getExtensionApiForZone("...."); Set<? extends Extension> exts=extApi.list(); Extension ext1=....; String alias1=ext1.getAlias(); Q: How do I construct an extension domain class from that "alias1"?. Is there any helper classes or boilerplate code that one could use?. I just want to make sure that I don't reinvent the wheel. Thanks, BK On Mon, Sep 30, 2013 at 2:48 PM, Zack Shoylev <zack.shoy...@rackspace.com<mailto:zack.shoy...@rackspace.com>> wrote: The openstack server api is called nova. You can use nova to talk to an openstack nova service. Some sample code I used recently (nova-based) is here: https://gist.github.com/zack-shoylev/6542561 More here: https://github.com/jclouds/jclouds-examples/tree/master/compute-basics ________________________________ From: Bk Lau [bklau2...@gmail.com<mailto:bklau2...@gmail.com>] Sent: Thursday, September 26, 2013 3:35 PM To: user@jclouds.incubator.apache.org<mailto:user@jclouds.incubator.apache.org> Subject: How to bind and work with OpenStack extensions Hi: Assuming that I have an OpenStack extension, for say, ServerAPI, my question is do JCloud have some standard classes/utilities way to allow me to bind to it and start using it or do I have to write my own JSON calls??. Sample code would be nice :) Thanks, BK
