Update policies

[PizieDust]

This PR adds some new functionality to update policies.

[PizieDust]

@hannesm when trying to add a policy I get this error:

Error while querying Albatross: eof from albatross 193.30.40.133:1025 querying [vm: pixie:.] policy add policy: 1 vms 4,12 cpus 50 MB memory 100 MB block, bridges: as250

[hannesm]

hmm, no, I don't understand why you now return the unallocated_resources and root_policy -- and fail to understand what the update_policy page should display.

[PizieDust]

hmm, no, I don't understand why you now return the unallocated_resources and root_policy -- and fail to understand what the update_policy page should display.

My understanding is that:

• root_policy returns all the resources (unallocated + allocated).
• unallocated_resources: this is everything that isn't assigned to any policy
• user_policy: this is the policy of any specific user

So let's say we have two users robur and pixie.

• root_policy has 10 vms.
• robur has 5 vms
• pixie has 3 vms
  If robur wants to update the policy of pixie, what will be on the UI is
• unallocated_resources : 2 vms.
• total_available : 7 vms

I'm not sure if this approach was what you had in mind?

[hannesm]

So let's say we have two users robur and pixie.

* `root_policy` has 10 vms.

* robur has 5 vms

* pixie has 3 vms
  If robur wants to update the policy of pixie, what will be on the UI is

* `unallocated_resources` : 2 vms.

* `total_available` : 7 vms

I'm not sure if this approach was what you had in mind?

For me, the interesting numbers would be "I can specify to allocate up to 7" and "I currently have 5".

[PizieDust]

So let's say we have two users robur and pixie.

* `root_policy` has 10 vms.

* robur has 5 vms

* pixie has 3 vms
  If robur wants to update the policy of pixie, what will be on the UI is

* `unallocated_resources` : 2 vms.

* `total_available` : 7 vms

I'm not sure if this approach was what you had in mind?

For me, the interesting numbers would be "I can specify to allocate up to 7" and "I currently have 5".

great, thank you. I think I understand what you meant earlier.

[hannesm]

@PizieDust cool, great. I guess the root_policy can be removed from the update_policy module...

[hannesm]

Thanks a lot for your amazing work on this, @PizieDust. :)