Quoting "[email protected]" <[email protected]>:
Hi all!
Sorry guys, I'll duplicate my question posted on the #jclouds.
Is there an uniform way to add node firewall settings via compute
service? Or it's too specific for each provider so I need to you
provider API directly? I'm a little bit confused in concepts and
terminology.
Hopefully, we can achieve what you're looking to do without going
entirely "over to the provider side" ;-)
Roughly, speaking, there are three levels of abstraction possible here:
1) Portable ComputeService with portable TemplateOptions [1]
Here, we're calling the "standard" ComputeService and specifying only
those options exposed by the "standard" TemplateOptions builder. This
should allow our requests to run across multiple clouds.
2) Portable ComputeService with provider-specific TemplateOptions
Here, we're again calling the standard ComputeService but are adding
some provider-specific options to the template, by casting it
appropriately, e.g. [2, 3]. This introduces a small dependency on the
provider, but still shields us from the complexity of dealing with the
underlying provider API.
3) Provider-specific API
Here, we deal directly with the provider API, making requests for
nodes using provider-specific calls with provider-specific options. So
we probably won't even be using the TemplateOptions here (since they
come from the portable ComputeService layer).
This gives us the most flexibility in dealing with a specific
provider, but obviously also introduces the tightest coupling *to*
that provider.
In our case, I hope option 2) will be sufficient, but you'll have to
have a look at EC2TemplateOptions or AWSEC2TemplateOptions (if we're
talking AWS here) to verify that.
On a separate note: which parts of the terminology ("api", "provider",
"view", other..?) are you having difficulties understanding? Sounds
like a good candidate for a documentation update.
Hope this helps!
ap
[1]
http://javadocs.jclouds.cloudbees.net/org/jclouds/compute/options/TemplateOptions.Builder.html
[2]
http://javadocs.jclouds.cloudbees.net/org/jclouds/aws/ec2/compute/AWSEC2TemplateOptions.Builder.html
[3]
https://github.com/jclouds/jclouds-examples/blob/master/ec2-computeservice-spot/src/main/java/org/jclouds/examples/ec2/spot/MainApp.java#L78
