Class: Demeter::Commands::Generate

Inherits:
Base
  • Object
show all
Defined in:
lib/demeter/commands/generate.rb

Instance Method Summary collapse

Methods inherited from Base

#check_path

Constructor Details

#initialize(options) ⇒ Generate

Returns a new instance of Generate.



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# File 'lib/demeter/commands/generate.rb', line 8

def initialize(options)
  super
  @ids = options[:ids]
end

Instance Method Details

#project_key(name) ⇒ Object 



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# File 'lib/demeter/commands/generate.rb', line 13

def project_key name
  name
  .gsub('::', '_')
  .gsub('/', '_')
  .gsub('-', '_')
  .gsub(' ', '_')
  .downcase
end

#start ⇒ Object 



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# File 'lib/demeter/commands/generate.rb', line 22

def start
  # collect vars
  res = @ec2.describe_security_groups
  res[:security_groups].each do |object|
    name_tag = object['tags'].detect{|tag| tag['key'].downcase == 'name'}
    sg_key = name_tag ? project_key(name_tag['value']) : project_key(object.group_name)  
    Demeter::set_var("security_group.#{sg_key}.id", object.group_id)
    Demeter::set_var(object.group_id, "<% security_group.#{sg_key}.id %>")
  end

  resp = @ec2.describe_security_groups({group_ids: @ids})
  
  template = {
    'environments' => [@options['environment']],
    'security_groups' => []
  }

  resp[:security_groups].each do |_sg|
    name_tag = _sg['tags'].detect{|tag| tag['key'].downcase == 'name'}
    sg_key = name_tag ? project_key(name_tag['value']) : project_key(_sg.group_name)  
    
    sg_template = {
      'name' => (name_tag ? name_tag['value'] : _sg.group_name),
      'vpc_id' => '<% env.vpc_id %>',
      'ingress' => [],
      'egress' => []
    }
   
    # Ingress 
    _sg['ip_permissions'].each do |_rule|
      rule = {
        'protocol' => _rule.ip_protocol,
        'from_port' => _rule.from_port.to_i,
        'to_port' => _rule.to_port.to_i,
      }
      
      if !_rule['user_id_group_pairs'].empty?
        rule['source_security_groups'] = []
        _rule['user_id_group_pairs'].each do |_group|
          group_key = Demeter::vars[_group['group_id']] ? Demeter::vars[_group['group_id']] : _group['group_id']
          rule['source_security_groups'] << group_key 
        end
      end
 
      if !_rule['ip_ranges'].empty?
        rule['cidr_blocks'] = []
        _rule['ip_ranges'].each do |_range|
          rule['cidr_blocks'] << _range['cidr_ip']
        end
      end

      sg_template['ingress'] << rule
    end

    # Egress
    _sg['ip_permissions_egress'].each do |_rule|
      rule = {
        'protocol' => _rule.ip_protocol,
        'from_port' => _rule.from_port.to_i,
        'to_port' => _rule.to_port.to_i,
      }
      
      if !_rule['user_id_group_pairs'].empty?
        rule['source_security_groups'] = []
        _rule['user_id_group_pairs'].each do |_group|
          group_key = Demeter::vars[_group['group_id']] ? Demeter::vars[_group['group_id']] : _group['group_id']
          rule['source_security_groups'] << group_key 
        end
      end
 
      if !_rule['ip_ranges'].empty?
        rule['cidr_blocks'] = []
        _rule['ip_ranges'].each do |_range|
          rule['cidr_blocks'] << _range['cidr_ip']
        end
      end

      sg_template['egress'] << rule
    end

    template['security_groups'] << sg_template
  end

  puts template.to_yaml.gsub('"', '')
end