require 'azure/armrest'

# Create a configuration object. All service objects will then use the
# information you set here.
#
# A token will be retrieved based on the information you provided

conf = Azure::Armrest::Configuration.new(
  :client_id       => 'XXXXX',
  :client_key      => 'YYYYY',
  :tenant_id       => 'ZZZZZ',
  :subscription_id => 'ABCDEFG'
)

# This will then use the configuration info set above.
vms = Azure::Armrest::VirtualMachineService.new(conf)

# You can add other options specific to the service to be created,
# such as the provider.

options = {:provider => 'Microsoft.ClassicCompute'}
vms = Azure::Armrest::VirtualMachineService.new(conf, options)

# List all virtual machines for a given resource group:
vms.list(some_group).each do |vm|
  puts vm.name
  puts vm.resource_group
  puts vm.location
  puts vm.properties.hardware_profile.vm_size
end