Class: SparkleFormation::Translation::Heat

Inherits:
SparkleFormation::Translation show all
Defined in:
lib/sparkle_formation/translation/heat.rb

Overview

Translation for Heat (HOT)

Direct Known Subclasses

Rackspace

Constant Summary collapse

MAP =

Heat translation mapping

{
  :resources => {
    "AWS::EC2::Instance" => {
      :name => "OS::Nova::Server",
      :finalizer => :nova_server_finalizer,
      :properties => {
        "AvailabilityZone" => "availability_zone",
        "BlockDeviceMappings" => :nova_server_block_device_mapping,
        "ImageId" => "image",
        "InstanceType" => "flavor",
        "KeyName" => "key_name",
        "NetworkInterfaces" => "networks",
        "SecurityGroups" => "security_groups",
        "SecurityGroupIds" => "security_groups",
        "Tags" => "metadata",
        "UserData" => :nova_server_user_data,
      },
    },
    "AWS::AutoScaling::AutoScalingGroup" => {
      :name => "OS::Heat::AutoScalingGroup",
      :properties => {
        "Cooldown" => "cooldown",
        "DesiredCapacity" => "desired_capacity",
        "MaxSize" => "max_size",
        "MinSize" => "min_size",
        "LaunchConfigurationName" => :autoscaling_group_launchconfig,
      },
    },
    "AWS::AutoScaling::LaunchConfiguration" => :delete,
    "AWS::ElasticLoadBalancing::LoadBalancer" => {
      :name => "OS::Neutron::LoadBalancer",
      :finalizer => :neutron_loadbalancer_finalizer,
      :properties => {
        "Instances" => "members",
        "Listeners" => "listeners",
        "HealthCheck" => "health_check",
        "Subnets" => "subnets",
      },
    },
    "AWS::EC2::VPC" => {
      :name => "OS::Neutron::Net",
      :finalizer => :neutron_net_finalizer,
      :properties => {
        "CidrBlock" => "cidr",
      },
    },
    "AWS::EC2::Subnet" => {
      :name => "OS::Neutron::Subnet",
      :finalizer => :neutron_subnet_finalizer,
      :properties => {
        "CidrBlock" => "cidr",
        "VpcId" => "network",
        "AvailabilityZone" => "availability_zone",
      },
    },
  },
}
REF_MAPPING = 
{
  "AWS::StackName" => "OS::stack_name",
  "AWS::StackId" => "OS::stack_id",
  "AWS::Region" => "OS::stack_id", # @todo i see it set in source, but no function. wat
}
FN_MAPPING = 
{
  "Fn::GetAtt" => "get_attr",
  "Fn::Join" => "list_join",
}

Instance Method Summary collapse

Constructor Details

This class inherits a constructor from SparkleFormation::Translation

Instance Method Details

#autoscaling_group_launchconfig(value, args = {}) ⇒ Array<String, Object>

TODO:

implement

Custom mapping for ASG launch configuration

Parameters:

  • value (Object) —

    original property value

  • args (Hash) (defaults to: {})

Options Hash (args):

  • :new_resource (Hash)
  • :new_properties (Hash)
  • :original_resource (Hash)

Returns:

  • (Array<String, Object>) —

    name and new value



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# File 'lib/sparkle_formation/translation/heat.rb', line 314

def autoscaling_group_launchconfig(value, args = {})
  ["resource", value]
end

#complete_launch_config_lb_setups ⇒ Object

Update any launch configuration which define load balancers to ensure they are attached to the correct resources when multiple listeners (ports) have been defined resulting in multiple isolated LB resources



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# File 'lib/sparkle_formation/translation/heat.rb', line 173

def complete_launch_config_lb_setups
  translated["resources"].find_all do |resource_name, resource|
    resource["type"] == "OS::Heat::AutoScalingGroup"
  end.each do |name, value|
    if lbs = value["properties"].delete("load_balancers")
      lbs.each do |lb_ref|
        lb_name = resource_name(lb_ref)
        lb_resource = translated["resources"][lb_name]
        vip_resources = translated["resources"].find_all do |k, v|
          k.match(/#{lb_name}Vip\d+/) && v["type"] == "OS::Neutron::LoadBalancer"
        end
        value["properties"]["load_balancers"] = vip_resources.map do |vip_name|
          {"get_resource" => vip_name}
        end
      end
    end
  end
  true
end

#default_key_format(key) ⇒ String

Default keys to snake cased format (underscore)

Parameters:

  • key (String, Symbol)

Returns:

  • (String) 


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# File 'lib/sparkle_formation/translation/heat.rb', line 322

def default_key_format(key)
  snake(key)
end

#neutron_loadbalancer_finalizer(resource_name, new_resource, old_resource) ⇒ Object

Finalizer for the neutron load balancer resource. This finalizer may generate new resources if the load balancer has multiple listeners defined (neutron lb implementation defines multiple isolated resources sharing a common virtual IP)

rubocop:disable Metrics/MethodLength

Parameters:

  • resource_name (String)
  • new_resource (Hash)
  • old_resource (Hash)

Returns:

  • (Object) 


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# File 'lib/sparkle_formation/translation/heat.rb', line 78

def neutron_loadbalancer_finalizer(resource_name, new_resource, old_resource)
  listeners = new_resource["Properties"].delete("listeners") || []
  healthcheck = new_resource["Properties"].delete("health_check")
  subnet = (new_resource["Properties"].delete("subnets") || []).first

  # if health check is provided, create resource and apply to
  # all pools generated
  if healthcheck
    healthcheck_name = "#{resource_name}HealthCheck"
    check = {
      healthcheck_name => {
        "Type" => "OS::Neutron::HealthMonitor",
        "Properties" => {}.tap { |properties|
          {"Timeout" => "timeout", "Interval" => "delay", "HealthyThreshold" => "max_retries"}.each do |aws, hot|
            if healthcheck[aws]
              properties[hot] = healthcheck[aws]
            end
          end
          type, port, path = healthcheck["Target"].split(%r{(:|/.*)}).find_all { |x| x != ":" }
          properties["type"] = type
          if path
            properties["url_path"] = path
          end
        },
      },
    }
    translated["Resources"].merge!(check)
  end

  base_listener = listeners.shift
  base_pool_name = "#{resource_name}Pool"
  base_pool = {
    base_pool_name => {
      "Type" => "OS::Neutron::Pool",
      "Properties" => {
        "lb_method" => "ROUND_ROBIN",
        "monitors" => [
          {"get_resource" => healthcheck_name},
        ],
        "protocol" => base_listener["Protocol"],
        "vip" => {
          "protocol_port" => base_listener["LoadBalancerPort"],
        },
        "subnet" => subnet,
      },
    },
  }
  if healthcheck
    base_pool[base_pool_name]["Properties"].merge(
      "monitors" => [
        {"get_resource" => healthcheck_name},
      ],
    )
  end

  translated["Resources"].merge!(base_pool)
  new_resource["Properties"]["pool_id"] = {"get_resource" => base_pool_name}
  new_resource["Properties"]["protocol_port"] = base_listener["InstancePort"]

  listeners.each_with_index do |listener, count|
    pool_name = "#{resource_name}PoolVip#{count}"
    pool = {
      pool_name => {
        "Type" => "OS::Neutron::Pool",
        "Properties" => {
          "lb_method" => "ROUND_ROBIN",
          "protocol" => listener["Protocol"],
          "subnet" => subnet,
          "vip" => {
            "protocol_port" => listener["LoadBalancerPort"],
          },
        },
      },
    }
    if healthcheck
      pool[pool_name]["Properties"].merge(
        "monitors" => [
          {"get_resource" => healthcheck_name},
        ],
      )
    end

    lb_name = "#{resource_name}Vip#{count}"
    lb = {lb_name => MultiJson.load(MultiJson.dump(new_resource))}
    lb[lb_name]["Properties"]["pool_id"] = {"get_resource" => pool_name}
    lb[lb_name]["Properties"]["protocol_port"] = listener["InstancePort"]
    translated["Resources"].merge!(pool)
    translated["Resources"].merge!(lb)
  end
end

#neutron_net_finalizer(resource_name, new_resource, old_resource) ⇒ TrueClass

Finalizer for the neutron net resource. Scrub properties.

Parameters:

  • resource_name (String)
  • new_resource (Hash)
  • old_resource (Hash)

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/translation/heat.rb', line 285

def neutron_net_finalizer(resource_name, new_resource, old_resource)
  new_resource["Properties"].clear
  true
end

#neutron_subnet_finalizer(resource_name, new_resource, old_resource) ⇒ TrueClass

Finalizer for the neutron subnet resource. Creates a stub network to attach subnet if availability zones are defined (aws classic)

Parameters:

  • resource_name (String)
  • new_resource (Hash)
  • old_resource (Hash)

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/translation/heat.rb', line 267

def neutron_subnet_finalizer(resource_name, new_resource, old_resource)
  azs = new_resource["Properties"].delete("availability_zone")
  if azs
    network_name = "NetworkFor#{resource_name}"
    translated["Resources"][network_name] = {
      "type" => "OS::Neutron::Network",
    }
    new_resource["Properties"]["network"] = {"get_resource" => network_name}
  end
  true
end

#nova_server_block_device_mapping(value, args = {}) ⇒ Array<String, Object>

TODO:

implement

Custom mapping for block device

Parameters:

  • value (Object) —

    original property value

  • args (Hash) (defaults to: {})

Options Hash (args):

  • :new_resource (Hash)
  • :new_properties (Hash)
  • :original_resource (Hash)

Returns:

  • (Array<String, Object>) —

    name and new value



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# File 'lib/sparkle_formation/translation/heat.rb', line 202

def nova_server_block_device_mapping(value, args = {})
  ["block_device_mapping", value]
end

#nova_server_finalizer(resource_name, new_resource, old_resource) ⇒ Object

Finalizer for the nova server resource. Fixes bug with remotes in metadata

Parameters:

  • resource_name (String)
  • new_resource (Hash)
  • old_resource (Hash)

Returns:

  • (Object) 


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# File 'lib/sparkle_formation/translation/heat.rb', line 227

def nova_server_finalizer(resource_name, new_resource, old_resource)
  if old_resource["Metadata"]
    new_resource["Metadata"] = old_resource["Metadata"]
    proceed = new_resource["Metadata"] &&
              new_resource["Metadata"]["AWS::CloudFormation::Init"] &&
              config = new_resource["Metadata"]["AWS::CloudFormation::Init"]["config"]
    if proceed
      # NOTE: This is a stupid hack since HOT gives the URL to
      # wget directly and if special characters exist, it fails
      if files = config["files"]
        files.each do |key, args|
          if args["source"]
            if args["source"].is_a?(String)
              args["source"].replace("\"#{args["source"]}\"")
            else
              args["source"] = {
                "Fn::Join" => [
                  "", [
                    "\"",
                    args["source"],
                    "\"",
                  ],
                ],
              }
            end
          end
        end
      end
    end
  end
end

#nova_server_user_data(value, args = {}) ⇒ Array<String, Object>

Custom mapping for server user data

Parameters:

  • value (Object) —

    original property value

  • args (Hash) (defaults to: {})

Options Hash (args):

  • :new_resource (Hash)
  • :new_properties (Hash)
  • :original_resource (Hash)

Returns:

  • (Array<String, Object>) —

    name and new value



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# File 'lib/sparkle_formation/translation/heat.rb', line 214

def nova_server_user_data(value, args = {})
  args[:new_properties][:user_data_format] = "RAW"
  args[:new_properties][:config_drive] = "true"
  [:user_data, Hash[value.values.first]]
end

#resource_finalizer(resource_name, new_resource, old_resource) ⇒ TrueClass

Finalizer applied to all new resources

Parameters:

  • resource_name (String)
  • new_resource (Hash)
  • old_resource (Hash)

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/translation/heat.rb', line 296

def resource_finalizer(resource_name, new_resource, old_resource)
  %w(DependsOn Metadata).each do |key|
    if old_resource[key] && !new_resource[key]
      new_resource[key] = old_resource[key]
    end
  end
  true
end

#translate! ⇒ TrueClass

TODO:

still needs replacements of functions and pseudo-params

Note:

this is an override to return in proper HOT format

Translate stack definition

Returns:

  • (TrueClass) 


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# File 'lib/sparkle_formation/translation/heat.rb', line 11

def translate!
  super
  cache = MultiJson.load(MultiJson.dump(translated))
  # top level
  cache.each do |k, v|
    translated.delete(k)
    translated[snake(k).to_s] = v
  end
  # params
  cache.fetch("Parameters", {}).each do |k, v|
    translated["parameters"][k] = Hash[
      v.map do |key, value|
        if key == "Type"
          [snake(key).to_s, value.downcase]
        elsif key == "AllowedValues"
          # @todo fix this up to properly build constraints
          ["constraints", [{"allowed_values" => value}]]
        else
          [snake(key).to_s, value]
        end
      end
    ]
  end
  # resources
  cache.fetch("Resources", {}).each do |r_name, r_value|
    translated["resources"][r_name] = Hash[
      r_value.map do |k, v|
        [snake(k).to_s, v]
      end
    ]
  end
  # outputs
  cache.fetch("Outputs", {}).each do |o_name, o_value|
    translated["outputs"][o_name] = Hash[
      o_value.map do |k, v|
        [snake(k).to_s, v]
      end
    ]
  end
  translated.delete("awstemplate_format_version")
  translated["heat_template_version"] = "2013-05-23"
  # no HOT support for mappings, so remove and clean pseudo
  # params in refs
  if translated["resources"]
    translated["resources"] = dereference_processor(translated["resources"], ["Fn::FindInMap", "Ref"])
    translated["resources"] = rename_processor(translated["resources"])
  end
  if translated["outputs"]
    translated["outputs"] = dereference_processor(translated["outputs"], ["Fn::FindInMap", "Ref"])
    translated["outputs"] = rename_processor(translated["outputs"])
  end
  translated.delete("mappings")
  complete_launch_config_lb_setups
  true
end