Class: Discotheque::Metadata

Inherits:
Object
  • Object
show all
Defined in:
lib/discotheque/metadata.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mock = false) ⇒ Metadata

Returns a new instance of Metadata.



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# File 'lib/discotheque/metadata.rb', line 6

def initialize(mock=false)
  if mock == true
    @image_id = "ami-221fec4b" # amazon linux ami
    @group_name = "default"
    @availability_zone = "us-east-1a"
    return
  else
    base_url = "http://169.254.169.254/latest/meta-data/"
    begin
      %w[instance-id ami-id security-groups availability-zone].each do |datum|
        datum == "availability-zone" ? url="#{base_url}/placement/#{datum}" : url="#{base_url}#{datum}"
        d = ::HTTParty.get("#{url}").parsed_response
        if datum == "security-groups" 
          instance_variable_set "@group_name", d
        elsif datum == "ami-id"
          instance_variable_set "@image_id", d
        else
          instance_variable_set "@#{datum.gsub(/-/,"_")}", d
        end
      end
    rescue Errno::EHOSTUNREACH
      puts "This only makes sense on EC2 hosts"
    end
  end
end

Instance Attribute Details

#availability_zone ⇒ Object (readonly)

Returns the value of attribute availability_zone.



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# File 'lib/discotheque/metadata.rb', line 4

def availability_zone
  @availability_zone
end

#group_name ⇒ Object (readonly)

Returns the value of attribute group_name.



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# File 'lib/discotheque/metadata.rb', line 4

def group_name
  @group_name
end

#image_id ⇒ Object (readonly)

Returns the value of attribute image_id.



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# File 'lib/discotheque/metadata.rb', line 4

def image_id
  @image_id
end

#instance_id ⇒ Object (readonly)

Returns the value of attribute instance_id.



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# File 'lib/discotheque/metadata.rb', line 4

def instance_id
  @instance_id
end