Lease creation should fail if ‘amount’ and/or ‘min’ parameters are passed with value as 0

[Niraj Singh]

Description
===========

Lease for resource_type virtual:instance should not be created with amount=0.

Steps to reproduce
==================

Create lease for instance reservation with amount=0.

Command:

blazar lease-create --reservation resource_type=virtual:instance,vcpus=1,memory_mb=1024,disk_gb=20,amount=0,affinity=False --start-date "2020-07-24 20:00" --end-date "2020-08-09 21:00" lease-1

Expected result
===============

Lease create for instance reservation should fail with 400 BadRequest.

Actual Result
=============

Lease create for instance reservation with amount=0 created successfully.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/630026

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/630026
Committed: https://git.openstack.org/cgit/openstack/blazar/commit/?id=fa6bb0b5b2976906214b7f7f4f4aa5cb24234736
Submitter: Zuul
Branch: master

commit fa6bb0b5b2976906214b7f7f4f4aa5cb24234736
Author: asmita singh <email address hidden>
Date: Fri Dec 21 14:00:18 2018 +0000

    Lease creation/update should fail if amount is 0

    Lease is getting created and updated for resource_type virtual:instance
    with amount=0.
    This patch doesn't allow creation and update of lease with amount=0, it
    will raise 400 BadRequest.

    Lease creation for resource_type physical:host with min=0 or max=0
    raises 500 Internal Server Error and lease is updated for resource_type
    physical:host with min=0 or max=0.
    This patch doesn't allow creation and update of lease with min=0 or
    max=0, it will raise 400 BadRequest.

    APIImpact:
    1)Return 400 instead of 201 when lease is created with amount=0 for
    resource_type 'virtual:instance'.
    2)Return 400 instead of 500 when lease is created with min=0 or max=0
    for resource_type 'physical:host'.
    3)Return 400 instead of 200 when lease is updated with amount=0 for
    resource_type 'virtual:instance'.
    4)Return 400 instead of 200 when lease is updated with min=0 or max=0
    for resource_type 'physical:host'.

    Closes-Bug: #1807101

    Change-Id: I70e35ac7a524afb04077da5978c7563dec120639

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/blazar 4.0.0.0rc1 release candidate.