Class: VariationEngine

Inherits:
Object
  • Object
show all
Defined in:
bin/vary_instance_types

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ VariationEngine

Returns a new instance of VariationEngine.



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# File 'bin/vary_instance_types', line 16

def initialize(options)
  @options = options
  @instance_vars32 = { "m1.small" => "0.095", "c1.medium" => "0.19" }
  @instance_vars64 = { "m1.large" => "0.38", "m1.xlarge" => "0.76", "m2.xlarge" => "0.57", "m2.2xlarge" => "1.34", "m2.4xlarge" => "2.68", "c1.xlarge" => "0.76" }
  if options[:micro_mayhem]
    @instance_vars32 = { "t1.micro" => "0.02" } 
    @instance_vars64 = { "t1.micro" => "0.02" }
  end
  @deployments = Deployment.find_by(:nickname) {|n| n =~ /^#{@options[:tag]}/ }
  puts "loading #{@deployments.size} deployments matching your tag #{@options[:tag]}"
  return @deployments
end

Instance Method Details

#vary_instance_types ⇒ Object

select different instance types for every server



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# File 'bin/vary_instance_types', line 30

def vary_instance_types
  small_counter = 0
  large_counter = 0
  @deployments.each do |deployment|
    deployment.servers_no_reload.each do |server|
      server.reload
      server.settings
	server.parameters
      if server.ec2_instance_type =~ /small/ 
        small_counter += 1
        new_type = @instance_vars32.keys[small_counter % @instance_vars32.size]
        server.instance_type = new_type
        server.max_spot_price = @instance_vars32[new_type] if @options[:spot]
      elsif server.ec2_instance_type =~ /large/
        large_counter += 1
        new_type = @instance_vars64.keys[large_counter % @instance_vars64.size]
        server.instance_type = new_type
        server.max_spot_price = @instance_vars64[new_type] if @options[:spot]
      end
      server.pricing = "spot" if @options[:spot]
      server.save
    end
  end
end