Class: Ec2ssh::Migrator

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2ssh/migrator.rb

Instance Method Summary collapse

Constructor Details

#initialize(dotfile_path) ⇒ Migrator

Returns a new instance of Migrator.



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# File 'lib/ec2ssh/migrator.rb', line 7

def initialize(dotfile_path)
  @dotfile_path = dotfile_path
end

Instance Method Details

#backup! ⇒ Object 



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# File 'lib/ec2ssh/migrator.rb', line 71

def backup!
  backup_path = "#{@dotfile_path}.#{Time.now.strftime("%Y%m%d%H%M%S")}"
  File.open(backup_path, 'w') {|f| f.write dotfile_str }
  backup_path
end

#check_version ⇒ Object

Raises:



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# File 'lib/ec2ssh/migrator.rb', line 15

def check_version
  begin
    hash = YAML.load dotfile_str
    return '2' if hash.is_a?(Hash) && hash.keys.include?('aws_keys')
  rescue Psych::SyntaxError
  end

  begin
    Dsl::Parser.parse dotfile_str
    return '3'
  rescue DotfileSyntaxError
  end

  raise InvalidDotfile
end

#dotfile_str ⇒ Object 



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# File 'lib/ec2ssh/migrator.rb', line 11

def dotfile_str
  @dotfile_str ||= File.read(@dotfile_path)
end

#migrate_from_2 ⇒ Object 



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# File 'lib/ec2ssh/migrator.rb', line 31

def migrate_from_2
  hash = YAML.load dotfile_str
  out = StringIO.new

  out.puts "path '#{hash['path']}'" if hash['path']

  out.puts 'aws_keys('
  out.puts hash['aws_keys'].map {|name, key|
    "  #{name}: { access_key_id: '#{key['access_key_id']}', secret_access_key: '#{key['secret_access_key']}' }"
  }.join(",\n")
  out.puts ')'

  if hash['regions']
    regions = hash['regions'].map{|r| "'#{r}'" }.join(', ')
    out.puts "regions #{regions}"
  end

  out.puts "\n# Ignore unnamed instances\nreject {|instance| !instance.tags['Name'] }\n\n# You can use methods of AWS::EC2::Instance.\n# See http://docs.aws.amazon.com/AWSRubySDK/latest/AWS/EC2/Instance.html\nhost_line <<EOS\nHost <%= tags['Name'] %>.<%= availability_zone %>\n  HostName <%= dns_name || private_ip_address %>\nEOS\n  END\n\n  out.puts\n  out.puts dotfile_str.gsub(/^/m, '# ')\n\n  out.string\nend\n"

#replace!(new_dotfile_str) ⇒ Object 



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# File 'lib/ec2ssh/migrator.rb', line 67

def replace!(new_dotfile_str)
  File.open(@dotfile_path, 'w') {|f| f.write new_dotfile_str }
end