Class: AWS::EC2::Region

Inherits:
Object
  • Object
show all
Defined in:
lib/aws/ec2/region.rb

Overview

Represents an EC2 region. You can use this to find the endpoint for a given region:

ec2.regions["us-west-1"].endpoint

Region also responds to all of the methods of AWS::EC2 except #regions; for example, to list instance IDs by region, you can do:

ec2.regions.inject({}) do |h,region|
  h[region.name] = region.instances.map(&:id)
  h
end

Constant Summary collapse

PROXIED_METHODS = 
[
  :instances,
  :security_groups,
  :key_pairs,
  :elastic_ips,
  :tags,
  :availability_zones,
  :images,
  :volumes,
  :snapshots,
  :reserved_instances,
  :reserved_instances_offerings,
  :vpcs,
  :subnets,
  :network_acls,
  :route_tables,
  :network_interfaces,
  :internet_gateways,
  :customer_gateways,
  :vpn_gateways,
  :dhcp_options,
  :vpn_connections,
  :export_tasks,
]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options = {}) ⇒ Region

Returns a new instance of Region.



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# File 'lib/aws/ec2/region.rb', line 36

def initialize name, options = {}
  @name = name
  @endpoint = options[:endpoint] || "ec2.#{name}.amazonaws.com"
  @client = Client.new(options.merge(:endpoint => endpoint))
  @config = @client.config
end

Instance Attribute Details

#client ⇒ Client (readonly)

Returns:



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# File 'lib/aws/ec2/region.rb', line 50

def client
  @client
end

#config ⇒ Core::Configuration (readonly)

Returns:



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# File 'lib/aws/ec2/region.rb', line 53

def config
  @config
end

#endpoint ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/aws/ec2/region.rb', line 34

def endpoint
  @endpoint
end

#name ⇒ String (readonly)

Returns The name of the region (e.g. “us-east-1”).

Returns:

  • (String) —

    The name of the region (e.g. “us-east-1”).



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# File 'lib/aws/ec2/region.rb', line 44

def name
  @name
end

Instance Method Details

#eql?(other) ⇒ Boolean Also known as: ==

Parameters:

Returns:

  • (Boolean) 


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# File 'lib/aws/ec2/region.rb', line 66

def eql? other
  other.is_a?(Region) and
  other.name == name and
  other.endpoint == endpoint
end

#exists? ⇒ Boolean

Returns True if the region is available for this account.

Returns:

  • (Boolean) —

    True if the region is available for this account.



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# File 'lib/aws/ec2/region.rb', line 57

def exists?
  client.describe_regions(:region_names => [name])
  true
rescue Errors::InvalidParameterValue
  false
end