Sample Ruby code to create/update Azure autoscale availability set

autoscale_req.rb

require "azure"
require 'azure/base_management/management_http_request.rb'
require 'azure/core/http/http_request'

Azure.configure do |config|
  config.storage_account_name = "storage_account_name"
  config.storage_access_key   = "storage_access_key"
  config.management_certificate = "cert.pfx"
  config.subscription_id        = "subscription_id"
end

include Azure::Core::Http

# An extension of [ManagementHttpRequest][1] class to provide 
# request authentication mechanism
class AutoScaleReq < Azure::BaseManagement::ManagementHttpRequest

  def initialize(method, path, body = nil)
    service = Azure::BaseManagement::BaseManagementService.new

    super(method, path, body)

    @headers['x-ms-version'] = '2013-10-01'
    @headers['Content-Type'] = 'application/json'
  end

  def call
    request = http_request_class.new(uri.request_uri, headers)
    request.body = body if body
    http = http_setup
    HttpResponse.new(http.request(request))
  end
end



body = {"Profiles"=>[
          {"Capacity"=>{"Default"=>"1", "Maximum"=>"3", "Minimum"=>"1"},
           "Name"=>"AutoscaleProfile",
           "Rules"=>[
             {
               "MetricTrigger"=> {
                 "MetricName"=>"ApproximateMessageCount",
                 "MetricNamespace"=>"",
                 "MetricSource"=>"/Storage/<storage_name>/Queue/<queue_name>",
                 "Operator"=>"GreaterThanOrEqual",
                 "Statistic"=>"Average",
                 "Threshold"=>"20",
                 "TimeAggregation"=>"Average",
                 "TimeGrain"=>"PT5M",
                 "TimeWindow"=>"PT45M"
               },
               "ScaleAction"=>{"Cooldown"=>"PT5M",
                               "Direction"=>"Increase",
                               "Type"=>"ChangeCount",
                               "Value"=>"1"
                               }
             },
             {
               "MetricTrigger"=>{
                 "MetricName"=>"ApproximateMessageCount",
                 "MetricNamespace"=>"",
                 "MetricSource"=>"/Storage/<storage_name>/Queue/<queue_name>",
                 "Operator"=>"LessThanOrEqual",
                 "Statistic"=>"Average",
                 "Threshold"=>"20",
                 "TimeAggregation"=>"Average",
                 "TimeGrain"=>"PT5M",
                 "TimeWindow"=>"PT45M"
               }, "ScaleAction"=>{"Cooldown"=>"PT5M",
                                  "Direction"=>"Decrease",
                                  "Type"=>"ChangeCount",
                                  "Value"=>"1"
                                  }
             }
           ],
           :Name=>"AutoscaleProfile"
           }
        ],
        "Enabled"=>true
        }


t = AutoScaleReq.new(:put,
                     "/services/monitoring/autoscalesettings?resourceId=/virtualmachines/<cloud_service_name>/availabilitySets/<availability_set_name>",
                     body.to_json)
res =  t.call
p res.body
p res.status_code




[1]: https://github.com/Azure/azure-sdk-for-ruby/blob/master/lib/azure/base_management/management_http_request.rb