Class: AwsCsshx::ConfigurationFile

Inherits:
Object
  • Object
show all
Defined in:
lib/aws_csshx/configuration_file.rb

Constant Summary collapse

CONFIG_OPTS = 
%q{ec2_private_key aws_access_key aws_secret_key aws_region}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(conf) ⇒ ConfigurationFile

Returns a new instance of ConfigurationFile.



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# File 'lib/aws_csshx/configuration_file.rb', line 9

def initialize(conf)
  @config_file = conf
  @options = {}
  if File.exists?(conf)
    load_config_from_file @config_file
  else
    raise FileDoesNotExist, "Config file #{@config_file} cannot be found."
  end
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/aws_csshx/configuration_file.rb', line 5

def options
  @options
end

Instance Method Details

#load_config_from_file(file) ⇒ Object

Iterate over the config file line by line and throw away things not in our config opts array



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# File 'lib/aws_csshx/configuration_file.rb', line 20

def load_config_from_file(file)
  f = File.open(file, "r")
  f.each_line do |line|
    field,value = line.split('=')
    next if field.nil? or value.nil?
    field.strip!.downcase!
    value.strip!
    next unless CONFIG_OPTS.include?(field)
    @options[field] =
      if    field == 'ec2_private_key' then set_ec2_private_key(value)
      elsif field == 'aws_access_key' then set_aws_access_key(value)
      elsif field == 'aws_secret_key' then set_aws_secret_key(value)
      elsif field == 'aws_region' then set_aws_region(value)
      else  puts "No such option #{field} skipping..."
      end
  end
end

#set_aws_access_key(val) ⇒ Object 



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# File 'lib/aws_csshx/configuration_file.rb', line 63

def set_aws_access_key(val)
  if val
    val
  elsif ENV['AWS_ACCESS_KEY']
    ENV['AWS_ACCESS_KEY']
  elsif ENV['AMAZON_ACCESS_KEY_ID']
    ENV['AMAZON_ACCESS_KEY_ID']
  end
end

#set_aws_region(val) ⇒ Object

Private(ish) methods for config settings



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# File 'lib/aws_csshx/configuration_file.rb', line 43

def set_aws_region(val)
  if val
    val
  elsif ENV['AWS_REGION']
    ENV['AWS_REGION']
  else
    'us-east-1'
  end
end

#set_aws_secret_key(val) ⇒ Object 



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# File 'lib/aws_csshx/configuration_file.rb', line 53

def set_aws_secret_key(val)
  if val
    val
  elsif ENV['AWS_SECRET_KEY']
    ENV['AWS_SECRET_KEY']
  elsif ENV['AMAZON_SECRET_ACCESS_KEY']
    ENV['AMAZON_SECRET_ACCESS_KEY']
  end
end

#set_ec2_private_key(key_file) ⇒ Object 



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# File 'lib/aws_csshx/configuration_file.rb', line 73

def set_ec2_private_key(key_file)
  if File.exists?(key_file)
    key_file
  else
    puts "#{key_file} does not exist, using default."
    ENV['EC2_PRIVATE_KEY']
  end
end