How to use VclTask.getParams(Object) ?

[pjank]

Hi,

I'm using the VCloud 1.5 plug-in to intercept some Blocking Tasks on the AMQP bus and apply some policy checks before allowing vApps to be deployed or captured in a catalog.  The blocking task for the Add to Catalog comes accross as a vAppTemplate-owned blocking task.  From there I can get the vdcCaptureTemplate task which has a reference to the originating vApp in its Params, but I am having trouble figuring out the right way to extract the vApp reference from the Task Params.  Specifically, the VclTask class contains a getParams(Object) method call, but if i try something like:

var vApp = sourceTask.getParams(VclEntityType.VAPP);

it errors out saying: "Cannot convert vcloud:vapp to com.vmware.vmo.plugin.vcloud.model.VCloudExtensible"

This makes it look like I am supposed to send in an actual instantiated VclVApp object, but it doesn't look like the plug-in exposes a Constructor to simply create an empty VclVApp object without actually requesting an actual vApp from the VDC.

I know the Vapp reference is there in the Params because the xmlDump shows it:

<ns6:Params xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns6:CaptureVAppParamsType">
        <ns6:Source type="application/vnd.vmware.vcloud.vApp+xml" name="PJTest_RHEL2" href="https://server.domain.com/api/vApp/vapp-5bb091c5-b8d0-4990-b54c-7369718b7958"/>
    </ns6:Params>

Any help or ideas would be greatly appreciated.

[cdecanini_]

Here is what I did to get a vAppTemplate from a vApp instantiation blocking task. It may help you with adapting with the right constructir if it exists.

if (blockingTask != null) {
    var task = vcdHost.getEntityByReference(VclEntityType.TASK, blockingTask.getTask());
    System.log("task.href : " + task.href);
    var instantiateVAppParams = task.getParams(new VclInstantiateVAppParams());
    var vAppTemplateReference = instantiateVAppParams.source;
    var vAppTemplate = vcdHost.getEntityByReference(VclEntityType.VAPP_TEMPLATE ,vAppTemplateReference);

    //vAppTemplate Info
    var vAppTemplateName = vAppTemplate.name;
    var vAppTemplateDescription = vAppTemplate.description;
    var vAppTemplateSize = vAppTemplate.vAppTemplateSize;
}

[pjank]

Thanks, I had tried this as well, which is when I found out that there is no Constructor exposed for VclVApp:

So:

var vApp = sourceTask.getParams(new VclVApp());

results in:

"Unable to create object : VclVApp : com.vmware.vmo.plugin.vcloud.model.VApp"

I don't really want to create a real vApp in the VCD just to point to it as an Object type, but maybe as a work-around I can query for one and use it as a reference...

[cdecanini_ · Accepted solution]

I think that in your case it should be a VclCaptureVAppParams constructor, not a vApp one.

Christophe.

[pjank]

Yup, I see it now, and that works perfectly.  Thank you for the pointer!