# encoding: utf-8
# Code generated by Microsoft (R) AutoRest Code Generator 1.0.0.0
# Changes may cause incorrect behavior and will be lost if the code is
# regenerated.

module Azure::ARM::Compute
  #
  # Composite Swagger for Compute Client
  #
  class VirtualMachineScaleSetVMs
    include Azure::ARM::Compute::Models
    include MsRestAzure

    #
    # Creates and initializes a new instance of the VirtualMachineScaleSetVMs class.
    # @param client service class for accessing basic functionality.
    #
    def initialize(client)
      @client = client
    end

    # @return [ComputeManagementClient] reference to the ComputeManagementClient
    attr_reader :client

    #
    # Reimages (upgrade the operating system) a specific virtual machine in a VM
    # scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    def reimage(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = reimage_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [Concurrent::Promise] promise which provides async access to http
    # response.
    #
    def reimage_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      # Send request
      promise = begin_reimage_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers)

      promise = promise.then do |response|
        # Defining deserialization method.
        deserialize_method = lambda do |parsed_response|
        end

        # Waiting for response.
        @client.get_long_running_operation_result(response, deserialize_method)
      end

      promise
    end

    #
    # Deallocates a specific virtual machine in a VM scale set. Shuts down the
    # virtual machine and releases the compute resources it uses. You are not
    # billed for the compute resources of this virtual machine once it is
    # deallocated.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    def deallocate(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = deallocate_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [Concurrent::Promise] promise which provides async access to http
    # response.
    #
    def deallocate_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      # Send request
      promise = begin_deallocate_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers)

      promise = promise.then do |response|
        # Defining deserialization method.
        deserialize_method = lambda do |parsed_response|
        end

        # Waiting for response.
        @client.get_long_running_operation_result(response, deserialize_method)
      end

      promise
    end

    #
    # Deletes a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    def delete(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = delete_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [Concurrent::Promise] promise which provides async access to http
    # response.
    #
    def delete_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      # Send request
      promise = begin_delete_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers)

      promise = promise.then do |response|
        # Defining deserialization method.
        deserialize_method = lambda do |parsed_response|
        end

        # Waiting for response.
        @client.get_long_running_operation_result(response, deserialize_method)
      end

      promise
    end

    #
    # Gets a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [VirtualMachineScaleSetVM] operation results.
    #
    def get(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = get_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      response.body unless response.nil?
    end

    #
    # Gets a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def get_with_http_info(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      get_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
    end

    #
    # Gets a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def get_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'vm_scale_set_name is nil' if vm_scale_set_name.nil?
      fail ArgumentError, 'instance_id is nil' if instance_id.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'vmScaleSetName' => vm_scale_set_name,'instanceId' => instance_id,'subscriptionId' => @client.subscription_id},
          query_params: {'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:get, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 200
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?
        # Deserialize Response
        if status_code == 200
          begin
            parsed_response = response_content.to_s.empty? ? nil : JSON.load(response_content)
            result_mapper = VirtualMachineScaleSetVM.mapper()
            result.body = @client.deserialize(result_mapper, parsed_response, 'result.body')
          rescue Exception => e
            fail MsRest::DeserializationError.new('Error occurred in deserializing the response', e.message, e.backtrace, result)
          end
        end

        result
      end

      promise.execute
    end

    #
    # Gets the status of a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [VirtualMachineScaleSetVMInstanceView] operation results.
    #
    def get_instance_view(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = get_instance_view_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      response.body unless response.nil?
    end

    #
    # Gets the status of a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def get_instance_view_with_http_info(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      get_instance_view_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
    end

    #
    # Gets the status of a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def get_instance_view_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'vm_scale_set_name is nil' if vm_scale_set_name.nil?
      fail ArgumentError, 'instance_id is nil' if instance_id.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}/instanceView'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'vmScaleSetName' => vm_scale_set_name,'instanceId' => instance_id,'subscriptionId' => @client.subscription_id},
          query_params: {'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:get, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 200
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?
        # Deserialize Response
        if status_code == 200
          begin
            parsed_response = response_content.to_s.empty? ? nil : JSON.load(response_content)
            result_mapper = VirtualMachineScaleSetVMInstanceView.mapper()
            result.body = @client.deserialize(result_mapper, parsed_response, 'result.body')
          rescue Exception => e
            fail MsRest::DeserializationError.new('Error occurred in deserializing the response', e.message, e.backtrace, result)
          end
        end

        result
      end

      promise.execute
    end

    #
    # Gets a list of all virtual machines in a VM scale sets.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param virtual_machine_scale_set_name [String] The name of the VM scale set.
    # @param filter [String] The filter to apply to the operation.
    # @param select [String] The list parameters.
    # @param expand [String] The expand expression to apply to the operation.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [Array<VirtualMachineScaleSetVM>] operation results.
    #
    def list(resource_group_name, virtual_machine_scale_set_name, filter = nil, select = nil, expand = nil, custom_headers = nil)
      first_page = list_as_lazy(resource_group_name, virtual_machine_scale_set_name, filter, select, expand, custom_headers)
      first_page.get_all_items
    end

    #
    # Gets a list of all virtual machines in a VM scale sets.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param virtual_machine_scale_set_name [String] The name of the VM scale set.
    # @param filter [String] The filter to apply to the operation.
    # @param select [String] The list parameters.
    # @param expand [String] The expand expression to apply to the operation.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def list_with_http_info(resource_group_name, virtual_machine_scale_set_name, filter = nil, select = nil, expand = nil, custom_headers = nil)
      list_async(resource_group_name, virtual_machine_scale_set_name, filter, select, expand, custom_headers).value!
    end

    #
    # Gets a list of all virtual machines in a VM scale sets.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param virtual_machine_scale_set_name [String] The name of the VM scale set.
    # @param filter [String] The filter to apply to the operation.
    # @param select [String] The list parameters.
    # @param expand [String] The expand expression to apply to the operation.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def list_async(resource_group_name, virtual_machine_scale_set_name, filter = nil, select = nil, expand = nil, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'virtual_machine_scale_set_name is nil' if virtual_machine_scale_set_name.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{virtualMachineScaleSetName}/virtualMachines'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'virtualMachineScaleSetName' => virtual_machine_scale_set_name,'subscriptionId' => @client.subscription_id},
          query_params: {'$filter' => filter,'$select' => select,'$expand' => expand,'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:get, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 200
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?
        # Deserialize Response
        if status_code == 200
          begin
            parsed_response = response_content.to_s.empty? ? nil : JSON.load(response_content)
            result_mapper = VirtualMachineScaleSetVMListResult.mapper()
            result.body = @client.deserialize(result_mapper, parsed_response, 'result.body')
          rescue Exception => e
            fail MsRest::DeserializationError.new('Error occurred in deserializing the response', e.message, e.backtrace, result)
          end
        end

        result
      end

      promise.execute
    end

    #
    # Power off (stop) a virtual machine in a VM scale set. Note that resources are
    # still attached and you are getting charged for the resources. Instead, use
    # deallocate to release resources and avoid charges.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    def power_off(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = power_off_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [Concurrent::Promise] promise which provides async access to http
    # response.
    #
    def power_off_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      # Send request
      promise = begin_power_off_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers)

      promise = promise.then do |response|
        # Defining deserialization method.
        deserialize_method = lambda do |parsed_response|
        end

        # Waiting for response.
        @client.get_long_running_operation_result(response, deserialize_method)
      end

      promise
    end

    #
    # Restarts a virtual machine in a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    def restart(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = restart_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [Concurrent::Promise] promise which provides async access to http
    # response.
    #
    def restart_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      # Send request
      promise = begin_restart_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers)

      promise = promise.then do |response|
        # Defining deserialization method.
        deserialize_method = lambda do |parsed_response|
        end

        # Waiting for response.
        @client.get_long_running_operation_result(response, deserialize_method)
      end

      promise
    end

    #
    # Starts a virtual machine in a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    def start(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = start_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [Concurrent::Promise] promise which provides async access to http
    # response.
    #
    def start_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      # Send request
      promise = begin_start_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers)

      promise = promise.then do |response|
        # Defining deserialization method.
        deserialize_method = lambda do |parsed_response|
        end

        # Waiting for response.
        @client.get_long_running_operation_result(response, deserialize_method)
      end

      promise
    end

    #
    # Reimages (upgrade the operating system) a specific virtual machine in a VM
    # scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    #
    def begin_reimage(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = begin_reimage_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # Reimages (upgrade the operating system) a specific virtual machine in a VM
    # scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def begin_reimage_with_http_info(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      begin_reimage_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
    end

    #
    # Reimages (upgrade the operating system) a specific virtual machine in a VM
    # scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def begin_reimage_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'vm_scale_set_name is nil' if vm_scale_set_name.nil?
      fail ArgumentError, 'instance_id is nil' if instance_id.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}/reimage'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'vmScaleSetName' => vm_scale_set_name,'instanceId' => instance_id,'subscriptionId' => @client.subscription_id},
          query_params: {'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:post, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 202
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?

        result
      end

      promise.execute
    end

    #
    # Deallocates a specific virtual machine in a VM scale set. Shuts down the
    # virtual machine and releases the compute resources it uses. You are not
    # billed for the compute resources of this virtual machine once it is
    # deallocated.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    #
    def begin_deallocate(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = begin_deallocate_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # Deallocates a specific virtual machine in a VM scale set. Shuts down the
    # virtual machine and releases the compute resources it uses. You are not
    # billed for the compute resources of this virtual machine once it is
    # deallocated.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def begin_deallocate_with_http_info(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      begin_deallocate_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
    end

    #
    # Deallocates a specific virtual machine in a VM scale set. Shuts down the
    # virtual machine and releases the compute resources it uses. You are not
    # billed for the compute resources of this virtual machine once it is
    # deallocated.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def begin_deallocate_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'vm_scale_set_name is nil' if vm_scale_set_name.nil?
      fail ArgumentError, 'instance_id is nil' if instance_id.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}/deallocate'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'vmScaleSetName' => vm_scale_set_name,'instanceId' => instance_id,'subscriptionId' => @client.subscription_id},
          query_params: {'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:post, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 202
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?

        result
      end

      promise.execute
    end

    #
    # Deletes a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    #
    def begin_delete(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = begin_delete_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # Deletes a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def begin_delete_with_http_info(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      begin_delete_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
    end

    #
    # Deletes a virtual machine from a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def begin_delete_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'vm_scale_set_name is nil' if vm_scale_set_name.nil?
      fail ArgumentError, 'instance_id is nil' if instance_id.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'vmScaleSetName' => vm_scale_set_name,'instanceId' => instance_id,'subscriptionId' => @client.subscription_id},
          query_params: {'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:delete, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 200 || status_code == 202 || status_code == 204
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?

        result
      end

      promise.execute
    end

    #
    # Power off (stop) a virtual machine in a VM scale set. Note that resources are
    # still attached and you are getting charged for the resources. Instead, use
    # deallocate to release resources and avoid charges.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    #
    def begin_power_off(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = begin_power_off_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # Power off (stop) a virtual machine in a VM scale set. Note that resources are
    # still attached and you are getting charged for the resources. Instead, use
    # deallocate to release resources and avoid charges.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def begin_power_off_with_http_info(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      begin_power_off_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
    end

    #
    # Power off (stop) a virtual machine in a VM scale set. Note that resources are
    # still attached and you are getting charged for the resources. Instead, use
    # deallocate to release resources and avoid charges.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def begin_power_off_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'vm_scale_set_name is nil' if vm_scale_set_name.nil?
      fail ArgumentError, 'instance_id is nil' if instance_id.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}/poweroff'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'vmScaleSetName' => vm_scale_set_name,'instanceId' => instance_id,'subscriptionId' => @client.subscription_id},
          query_params: {'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:post, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 202
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?

        result
      end

      promise.execute
    end

    #
    # Restarts a virtual machine in a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    #
    def begin_restart(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = begin_restart_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # Restarts a virtual machine in a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def begin_restart_with_http_info(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      begin_restart_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
    end

    #
    # Restarts a virtual machine in a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def begin_restart_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'vm_scale_set_name is nil' if vm_scale_set_name.nil?
      fail ArgumentError, 'instance_id is nil' if instance_id.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}/restart'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'vmScaleSetName' => vm_scale_set_name,'instanceId' => instance_id,'subscriptionId' => @client.subscription_id},
          query_params: {'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:post, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 202
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?

        result
      end

      promise.execute
    end

    #
    # Starts a virtual machine in a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    #
    def begin_start(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      response = begin_start_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
      nil
    end

    #
    # Starts a virtual machine in a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def begin_start_with_http_info(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      begin_start_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers).value!
    end

    #
    # Starts a virtual machine in a VM scale set.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param vm_scale_set_name [String] The name of the VM scale set.
    # @param instance_id [String] The instance ID of the virtual machine.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def begin_start_async(resource_group_name, vm_scale_set_name, instance_id, custom_headers = nil)
      fail ArgumentError, 'resource_group_name is nil' if resource_group_name.nil?
      fail ArgumentError, 'vm_scale_set_name is nil' if vm_scale_set_name.nil?
      fail ArgumentError, 'instance_id is nil' if instance_id.nil?
      api_version = '2016-03-30'
      fail ArgumentError, '@client.subscription_id is nil' if @client.subscription_id.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachineScaleSets/{vmScaleSetName}/virtualmachines/{instanceId}/start'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          path_params: {'resourceGroupName' => resource_group_name,'vmScaleSetName' => vm_scale_set_name,'instanceId' => instance_id,'subscriptionId' => @client.subscription_id},
          query_params: {'api-version' => api_version},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:post, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 202
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?

        result
      end

      promise.execute
    end

    #
    # Gets a list of all virtual machines in a VM scale sets.
    #
    # @param next_page_link [String] The NextLink from the previous successful call
    # to List operation.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [VirtualMachineScaleSetVMListResult] operation results.
    #
    def list_next(next_page_link, custom_headers = nil)
      response = list_next_async(next_page_link, custom_headers).value!
      response.body unless response.nil?
    end

    #
    # Gets a list of all virtual machines in a VM scale sets.
    #
    # @param next_page_link [String] The NextLink from the previous successful call
    # to List operation.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [MsRestAzure::AzureOperationResponse] HTTP response information.
    #
    def list_next_with_http_info(next_page_link, custom_headers = nil)
      list_next_async(next_page_link, custom_headers).value!
    end

    #
    # Gets a list of all virtual machines in a VM scale sets.
    #
    # @param next_page_link [String] The NextLink from the previous successful call
    # to List operation.
    # @param [Hash{String => String}] A hash of custom headers that will be added
    # to the HTTP request.
    #
    # @return [Concurrent::Promise] Promise object which holds the HTTP response.
    #
    def list_next_async(next_page_link, custom_headers = nil)
      fail ArgumentError, 'next_page_link is nil' if next_page_link.nil?


      request_headers = {}

      # Set Headers
      request_headers['x-ms-client-request-id'] = SecureRandom.uuid
      request_headers['accept-language'] = @client.accept_language unless @client.accept_language.nil?
      path_template = '{nextLink}'

      request_url = @base_url || @client.base_url

      options = {
          middlewares: [[MsRest::RetryPolicyMiddleware, times: 3, retry: 0.02], [:cookie_jar]],
          skip_encoding_path_params: {'nextLink' => next_page_link},
          headers: request_headers.merge(custom_headers || {}),
          base_url: request_url
      }
      promise = @client.make_request_async(:get, path_template, options)

      promise = promise.then do |result|
        http_response = result.response
        status_code = http_response.status
        response_content = http_response.body
        unless status_code == 200
          error_model = JSON.load(response_content)
          fail MsRestAzure::AzureOperationError.new(result.request, http_response, error_model)
        end

        result.request_id = http_response['x-ms-request-id'] unless http_response['x-ms-request-id'].nil?
        # Deserialize Response
        if status_code == 200
          begin
            parsed_response = response_content.to_s.empty? ? nil : JSON.load(response_content)
            result_mapper = VirtualMachineScaleSetVMListResult.mapper()
            result.body = @client.deserialize(result_mapper, parsed_response, 'result.body')
          rescue Exception => e
            fail MsRest::DeserializationError.new('Error occurred in deserializing the response', e.message, e.backtrace, result)
          end
        end

        result
      end

      promise.execute
    end

    #
    # Gets a list of all virtual machines in a VM scale sets.
    #
    # @param resource_group_name [String] The name of the resource group.
    # @param virtual_machine_scale_set_name [String] The name of the VM scale set.
    # @param filter [String] The filter to apply to the operation.
    # @param select [String] The list parameters.
    # @param expand [String] The expand expression to apply to the operation.
    # @param custom_headers [Hash{String => String}] A hash of custom headers that
    # will be added to the HTTP request.
    #
    # @return [VirtualMachineScaleSetVMListResult] which provide lazy access to
    # pages of the response.
    #
    def list_as_lazy(resource_group_name, virtual_machine_scale_set_name, filter = nil, select = nil, expand = nil, custom_headers = nil)
      response = list_async(resource_group_name, virtual_machine_scale_set_name, filter, select, expand, custom_headers).value!
      unless response.nil?
        page = response.body
        page.next_method = Proc.new do |next_page_link|
          list_next_async(next_page_link, custom_headers)
        end
        page
      end
    end

  end
end
