Class: Cumulus::EC2::InstanceConfig

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2/models/InstanceConfig.rb

Overview

Public: An object representing configuration for a network interface

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, json = nil) ⇒ InstanceConfig

Public: Constructor

json - a hash containing the JSON configuration for the group



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# File 'lib/ec2/models/InstanceConfig.rb', line 37

def initialize(name, json = nil)
  @name = name
  if !json.nil?
    @ebs_optimized = json["ebs-optimized"] || false
    @placement_group = json["placement-group"]
    @profile = json["profile"]
    @image = json["image"]
    @key_name = json["key-name"]
    @monitoring = json["monitoring"] || false
    @network_interfaces = json["network-interfaces"] || 0
    @source_dest_check = json["source-dest-check"]
    @private_ip_address = json["private-ip-address"]
    @security_groups = json["security-groups"] || []
    @subnet = json["subnet"]
    @tenancy = json["tenancy"] || "default"
    @type = json["type"]
    @user_data = json["user-data"]
    @volume_groups = json["volume-groups"] || []
    @tags = json["tags"] || {}
  end
end

Instance Attribute Details

#ebs_optimized ⇒ Object (readonly)

Returns the value of attribute ebs_optimized.



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# File 'lib/ec2/models/InstanceConfig.rb', line 17

def ebs_optimized
  @ebs_optimized
end

#image ⇒ Object (readonly)

Returns the value of attribute image.



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# File 'lib/ec2/models/InstanceConfig.rb', line 20

def image
  @image
end

#key_name ⇒ Object (readonly)

Returns the value of attribute key_name.



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# File 'lib/ec2/models/InstanceConfig.rb', line 21

def key_name
  @key_name
end

#monitoring ⇒ Object (readonly)

Returns the value of attribute monitoring.



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# File 'lib/ec2/models/InstanceConfig.rb', line 22

def monitoring
  @monitoring
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/ec2/models/InstanceConfig.rb', line 16

def name
  @name
end

#network_interfaces ⇒ Object (readonly)

Returns the value of attribute network_interfaces.



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# File 'lib/ec2/models/InstanceConfig.rb', line 23

def network_interfaces
  @network_interfaces
end

#placement_group ⇒ Object (readonly)

Returns the value of attribute placement_group.



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# File 'lib/ec2/models/InstanceConfig.rb', line 18

def placement_group
  @placement_group
end

#private_ip_address ⇒ Object (readonly)

Returns the value of attribute private_ip_address.



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# File 'lib/ec2/models/InstanceConfig.rb', line 25

def private_ip_address
  @private_ip_address
end

#profile ⇒ Object (readonly)

Returns the value of attribute profile.



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# File 'lib/ec2/models/InstanceConfig.rb', line 19

def profile
  @profile
end

#security_groups ⇒ Object (readonly)

Returns the value of attribute security_groups.



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# File 'lib/ec2/models/InstanceConfig.rb', line 26

def security_groups
  @security_groups
end

#source_dest_check ⇒ Object (readonly)

Returns the value of attribute source_dest_check.



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# File 'lib/ec2/models/InstanceConfig.rb', line 24

def source_dest_check
  @source_dest_check
end

#subnet ⇒ Object (readonly)

Returns the value of attribute subnet.



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# File 'lib/ec2/models/InstanceConfig.rb', line 27

def subnet
  @subnet
end

#tags ⇒ Object (readonly)

Returns the value of attribute tags.



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# File 'lib/ec2/models/InstanceConfig.rb', line 32

def tags
  @tags
end

#tenancy ⇒ Object (readonly)

Returns the value of attribute tenancy.



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# File 'lib/ec2/models/InstanceConfig.rb', line 28

def tenancy
  @tenancy
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/ec2/models/InstanceConfig.rb', line 29

def type
  @type
end

#user_data ⇒ Object (readonly)

Returns the value of attribute user_data.



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# File 'lib/ec2/models/InstanceConfig.rb', line 30

def user_data
  @user_data
end

#volume_groups ⇒ Object (readonly)

Returns the value of attribute volume_groups.



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# File 'lib/ec2/models/InstanceConfig.rb', line 31

def volume_groups
  @volume_groups
end

Instance Method Details

#diff(aws) ⇒ Object

Public: Produce an array of differences between this local configuration and the configuration in AWS

aws - the AWS resource

Returns an array of the InterfaceDiffs that were found



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# File 'lib/ec2/models/InstanceConfig.rb', line 121

def diff(aws)
  diffs = []

  if aws.ebs_optimized != @ebs_optimized
    diffs << InstanceDiff.new(InstanceChange::EBS, aws.ebs_optimized, @ebs_optimized)
  end

  if aws.profile != @profile
    diffs << InstanceDiff.new(InstanceChange::PROFILE, aws.profile, @profile)
  end

  if aws.monitoring != @monitoring
    diffs << InstanceDiff.new(InstanceChange::MONITORING, aws.monitoring, @monitoring)
  end

  if aws.network_interfaces != @network_interfaces
    diffs << InstanceDiff.new(InstanceChange::INTERFACES, aws.network_interfaces, @network_interfaces)
  end

  if aws.source_dest_check != @source_dest_check
    diffs << InstanceDiff.new(InstanceChange::SDCHECK, aws.source_dest_check, @source_dest_check)
  end

  if aws.security_groups.sort != @security_groups.sort
    changes = Common::ListChange::simple_list_diff(aws.security_groups, @security_groups)
    diffs << InstanceDiff.new(InstanceChange::SECURITY_GROUPS, aws.security_groups, @security_groups, changes)
  end

  if aws.subnet != @subnet
    diffs << InstanceDiff.new(InstanceChange::SUBNET, aws.subnet, @subnet)
  end

  if aws.type != @type
    diffs << InstanceDiff.new(InstanceChange::TYPE, aws.type, @type)
  end

  if aws.tenancy != @tenancy
    diffs << InstanceDiff.new(InstanceChange::TENANCY, aws.tenancy, @tenancy)
  end

  if aws.tags != @tags
    diffs << InstanceDiff.new(InstanceChange::TAGS, aws.tags, @tags)
  end

  # Check for diffs in volume groups and diffs in how many volumes are attached

  # Get the volumes that are attached to the instance
  aws_instance = EC2::named_instances[aws.name]
  attached_volumes = aws_instance.nonroot_devices.map do |m|
    EC2::id_ebs_volumes[m.ebs.volume_id]
  end
  # Group by volume group, reject nil groups
  group_volumes = attached_volumes.group_by(&:group).reject { |k, v| k.nil? }

  aws_ebs_groups = Hash[group_volumes.map { |group, vols| [group, EbsGroupConfig.new(group).populate!(vols)] }]
  local_ebs_groups = Hash[@volume_groups.map { |vg| [vg, EC2::group_ebs_volumes[vg]] }]

  added_groups = Hash[local_ebs_groups.reject { |k, v| aws_ebs_groups.has_key?(k) }.map do |group_name, group_config|
    [group_name, EbsGroupDiff.added(group_config)]
  end]
  removed_groups = Hash[aws_ebs_groups.reject { |k, v| aws_ebs_groups.has_key?(k) }.map do |group_name, group_config|
    [group_name, EbsGroupDiff.unmanaged(group_config)]
  end]
  changed_groups = Hash[local_ebs_groups.select { |k, v| aws_ebs_groups.has_key?(k) }.map do |group_name, group_config|
    aws_config = aws_ebs_groups[group_name]
    group_diffs = group_config.diff(aws_config)
    if !group_diffs.empty?
      [group_name, EbsGroupDiff.modified(aws_config, group_config, group_diffs)]
    end
  end.reject { |v| v.nil? }]

  ebs_changes = Common::ListChange.new(added_groups, removed_groups, changed_groups)
  if !ebs_changes.empty?
    diffs << InstanceDiff.new(InstanceChange::VOLUME_GROUPS, aws_ebs_groups, local_ebs_groups, ebs_changes)
  end

  diffs
end

#populate!(aws_instance, user_data_file, tags) ⇒ Object

Public: Populate a config object with AWS configuration

aws_instance - the instance from AWS user_data_file - the name of the user data script file tags - a Hash of tags for the instance



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# File 'lib/ec2/models/InstanceConfig.rb', line 85

def populate!(aws_instance, user_data_file, tags)
  @ebs_optimized = aws_instance.ebs_optimized
  @placement_group = aws_instance.placement.group_name
  if @placement_group.empty? then @placement_group = nil end

  profile_arn = (aws_instance.iam_instance_profile.arn rescue nil)
  @profile = if profile_arn then profile_arn[profile_arn.rindex("/") + 1 .. profile_arn.length] end

  @image = aws_instance.image_id
  @key_name = aws_instance.key_name
  @monitoring = ["enabled", "pending"].include? aws_instance.monitoring.state
  @network_interfaces = aws_instance.network_interfaces.length
  @source_dest_check = aws_instance.source_dest_check
  @private_ip_address = aws_instance.private_ip_address
  @security_groups = aws_instance.security_groups.map(&:group_id).map { |id| SecurityGroups::id_security_groups[id].group_name }.sort
  @subnet = EC2::id_subnets[aws_instance.subnet_id].name
  @tenancy = aws_instance.placement.tenancy
  @type = aws_instance.instance_type
  @user_data = user_data_file

  # Get the volumes for each device mapping
  @volume_groups = aws_instance.nonroot_devices.map do |m|
    EC2::id_ebs_volumes[m.ebs.volume_id]
  end.map(&:group).reject(&:nil?).uniq.sort

  @tags = tags

  self
end

#to_hash ⇒ Object 



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# File 'lib/ec2/models/InstanceConfig.rb', line 59

def to_hash
  {
    "ebs-optimized" => @ebs_optimized,
    "placement-group" => @placement_group,
    "profile" => @profile,
    "image" => @image,
    "key-name" => @key_name,
    "monitoring" => @monitoring,
    "network-interfaces" => @network_interfaces,
    "source-dest-check" => @source_dest_check,
    "private-ip-address" => @private_ip_address,
    "security-groups" => @security_groups,
    "subnet" => @subnet,
    "tenancy" => @tenancy,
    "type" => @type,
    "user-data" => @user_data,
    "volume-groups" => @volume_groups,
    "tags" => @tags,
  }
end