Templates return as empty VirtualMachine objects about govmomi HOT 14 CLOSED

@jmmcatee can you give more context here, govc command or api you're using? There is no managed object for templates, so the api will return the VirtualMachine type for templates. But you can check the VirtualMachineConfigInfo.Template flag. For example:

% govc vm.info -json foo | jq .VirtualMachines[].Config.Template
false

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Sorry I was referencing the API and all I get back is an empty VM for
templates. I don't even get the name. I'll put a gist online later tonight
for reference.
On Jan 5, 2015 1:28 PM, "Doug MacEachern" [email protected] wrote:

@jmmcatee https://github.com/jmmcatee can you give more context here,
govc command or api you're using? There is no managed object for templates,
so the api will return the VirtualMachine type for templates. But you can
check the VirtualMachineConfigInfo.Template flag. For example:

% govc vm.info -json foo | jq .VirtualMachines[].Config.Template
false

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#193 (comment).

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Sounds good. Please include how you're using the API as well, so we know where to look if it is a bug.

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Here is a gist of what I am experiencing.

https://gist.github.com/jmmcatee/f2f77184d20cc86e96b3

Templates show up as empty VirtualMachine structs. Let me know if this helps identify the problem at all.

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I also work with templates and don't experience such issues. Can it be a problem in the 3rd-party library you're using?

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I'm only using govmomi. If you run my code do you get different results?
On Jan 20, 2015 3:23 PM, "Michael Kuzmin" [email protected] wrote:

I also work with templates and don't experience such issues. Can it be a
problem in thу 3rd-party library you're using?

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#193 (comment).

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Ultimately I'd like to create a VirtualMachine from a template via the API. How might I got about doing that? Does the API or govc support that at this time?

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I have created another Gist that includes all code that is not pulled from govmomi. This returns false for all VirtualMachines, but panics in the event a template is hit. I really am not sure what I'm doing wrong here.

https://gist.github.com/jmmcatee/eba0f808275301eae802

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What type does it say the Template is? It should be a VirtualMachine. A template is still a VirtualMachine that has just been registered as a template (or marked as one). They way I'm accomplishing this right now is just knowing my templates name and then using some (slightly simplified) code like this:

finder := find.NewFinder(client, false)
vm, _ := finder.VirtualMachine("TemplateName")
resourcePool, _ := finder.DefaultResourcePool()
rpRef := resourcePool.Reference()
clonespec := types.VirtualMachineCloneSpec{
    Location: types.VirtualMachineRelocateSpec{
        Pool: &rpRef,
    }
}

task, _ := vm.Clone(folders.VmFolder, "New VM Name", clonespec)
task.WaitForResult(nil)

Are you wanting to iterate through your VM list and pick out just the templates? I'm not sure if you can do that as it stands right now, you may consider putting them all in a specific folder so that you can just list a folder and pick a template from there.

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I'd like to be able to iteration so I can provide a selection menu. They do show up as VirtualMachines in the Reference, but any attempt to pull up the name or anything else about them either panics or is nil. Could this be a problem with how VirtualMachines that are marked as templates change in the XML response?

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I think you were just constructing the VM objects incorrectly. This should loop over your VMs and output "vmname,template". Essentially I believe you were constructing an empty VirtualMachine object and never pulling the Properties into it.

https://gist.github.com/daniellockard/b9ae34e270333f0887bb

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Your version works for me. I guess i don't understand why this is required for Templates, but not Virtual Machines as those load the whole structure just fine without the "Summary" addition.

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I didn't see it work with your version, for VMs or Templates. Glad I could help. I think this can be closed @dougm @pietern.

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Perfect, thanks for your help @daniellockard!

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