vRA Developer: Part 5 – Working with vCAC Virtual Machine Linked Entities

In my previous post vRA Developer: Part 4 – Working with vCAC Virtual Machine Entities, I demonstrated how you could find vCAC virtual machine entities and retrieve and update their properties. In this post I am going to focus on linked entities.

All code that I have provided or talked about in this post can be downloaded as a vRO package for your consumption here.

There are additional properties that can be retrieved which are part of other entities that the virtual machine has a relationship with. Here are some examples of information that can be retrieved through linked entities (the code for all of these examples is included in the package link provided at the beginning of this post).

  • Host/Cluster Name
  • Reservation Name
  • Owner Username
  • IPv4 Addresses
  • Snapshots
  • Networks

The virtual machine entity object has a method ‘.getLink(vcacHost, “linkKey_string”)‘ that can be used to get the linked entity objects. The ‘.getProperty(“key_string”)‘ can then be used on these entities to get a specific property value, such as the reservation name.

Get the Host or Cluster Name

The following code can be used to get the host or cluster name that the virtual machine (this is referred to as the compute resource within the vRA portal) is hosted on.

Log output:

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vRA Developer: Part 4 – Working with vCAC Virtual Machine Entities

In the first post in this series, vRA Developer: Part 1 – IaaS & Understanding The Entity Framework I detailed how you can view the vCAC entities and their associated properties. In this post I am going to cover how you can find a virtual machine entity using different property references and get/update their properties in your vRO workflows. I had intended to provide a single post for this, but felt it would be useful to provide a number of posts, for each specific vCAC entity type. In this post I am going to be looking at the vCAC virtual machine entities.

All code that I have provided or talked about in this post can be downloaded as a vRO package for your consumption here.

Finding vCAC Virtual Machine Entities

When I need to find a vCAC virtual machine entity, there are 4 search references that work well for all of my use cases. These are to search by:

  • VirtualMachineID – The entity ID.
  • VirtualMachineName – The VM name. Take caution as it’s possible to have duplicate entities with the same VirtualMachineName.
  • VMUniqueID – The unique identifier for the vm (i.e. vCenter VM instance UUID).
  • ExternalReferenceId – The external reference id (i.e. vCenter VM Id (MoRef)).

I have provided all the Actions below which perform these searches and an example log output for each.

Find Virtual Machine By Entity Id

The following code can be used to get the virtual machine entity by its entity id.

Log output:

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