Class: EC2::Host::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/ec2/host/config.rb

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.aws_access_key_id ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 45

def self.aws_access_key_id
  # ref. aws cli and terraform
  @aws_access_key_id ||= ENV['AWS_ACCESS_KEY_ID'] || config.fetch('AWS_ACCESS_KEY_ID', nil)
end

.aws_credentials_file ⇒ Object Also known as: aws_credential_file 



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# File 'lib/ec2/host/config.rb', line 55

def self.aws_credentials_file
  @aws_credentials_file ||=
    ENV['AWS_CREDENTIALS_FILE'] || config.fetch('AWS_CREDENTIALS_FILE', nil) || # old
    ENV['AWS_CREDENTIAL_FILE'] || config.fetch('AWS_CREDENTIAL_FILE', nil) || # old
    ENV['AWS_SHARED_CREDENTIALS_FILE'] || config.fetch('AWS_SHARED_CREDENTIALS_FILE', nil) || # ref. https://docs.aws.amazon.com/ja_jp/cli/latest/userguide/cli-configure-envvars.html
    File.expand_path('~/.aws/credentials')
end

.aws_profile ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 39

def self.aws_profile
  @aws_profile ||=
    ENV['AWS_PROFILE'] || config.fetch('AWS_PROFILE', nil) || # ref. old aws cli
    ENV['AWS_DEFAULT_PROFILE'] || config.fetch('AWS_DEFAULT_PROFILE', 'default') # ref. aws cli and terraform
end

.aws_region ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 32

def self.aws_region
  @aws_region ||=
    ENV['AWS_REGION'] || config.fetch('AWS_REGION', nil) || # ref. old aws cli
    ENV['AWS_DEFAULT_REGION'] || config.fetch('AWS_DEFAULT_REGION', nil) || # ref. aws cli and terraform
    aws_config['region'] || raise('AWS_REGION nor AWS_DEFAULT_REGION nor region in ~/.aws/config is not set')
end

.aws_secret_access_key ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 50

def self.aws_secret_access_key
  # ref. aws cli and terraform
  @aws_secret_access_key ||= ENV['AWS_SECRET_ACCESS_KEY'] || config.fetch('AWS_SECRET_ACCESS_KEY', nil)
end

.config_file ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 28

def self.config_file
  @config_file ||= ENV.fetch('EC2_HOST_CONFIG_FILE', File.exist?('/etc/sysconfig/ec2-host') ? '/etc/sysconfig/ec2-host' : '/etc/default/ec2-host')
end

.hostname_tag ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 87

def self.hostname_tag
  @hostname_tag ||= ENV['HOSTNAME_TAG'] || config.fetch('HOSTNAME_TAG', 'Name')
end

.log_level ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 83

def self.log_level
  @log_level ||= ENV['LOG_LEVEL'] || config.fetch('LOG_LEVEL', 'info')
end

.optional_array_tags ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 95

def self.optional_array_tags
  @optional_array_tags ||= (ENV['OPTIONAL_ARRAY_TAGS'] || config.fetch('OPTIONAL_ARRAY_TAGS', '')).split(',')
end

.optional_string_tags ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 99

def self.optional_string_tags
  @optional_string_tags ||= (ENV['OPTIONAL_STRING_TAGS'] || config.fetch('OPTIONAL_STRING_TAGS', '')).split(',')
end

.roles_tag ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 91

def self.roles_tag
  @roles_tag ||= ENV['ROLES_TAG'] || config.fetch('ROLES_TAG', 'Roles')
end

Class Method Details

.array_tag_delimiter ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 107

def self.array_tag_delimiter
  @array_tag_delimiter ||= ENV['ARRAY_TAG_DELIMITER'] || config.fetch('ARRAY_TAG_DELIMITER', ',')
end

.aws_config ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 70

def self.aws_config
  return @aws_config if @aws_config
  if File.readable?(aws_config_file)
    ini = IniFile.load(aws_config_file).to_h
    if aws_profile == 'default'
      @aws_config = ini['default']
    else
      @aws_config = ini["profile #{aws_profile}"]
    end
  end
  @aws_config ||= {}
end

.aws_config_file ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 66

def self.aws_config_file
  @aws_config_file ||= ENV['AWS_CONFIG_FILE'] || config.fetch('AWS_CONFIG_FILE', nil) || File.expand_path('~/.aws/config')
end

.config ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 133

def self.config
  return @config if @config
  @config = {}
  if File.exist?(config_file)
    File.readlines(config_file).each do |line|
      next if line.start_with?('#')
      key, val = line.chomp.split('=', 2)
      @config[key] = val
    end
  end
  @config
end

.configure(params) ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 22

def self.configure(params)
  params.each do |key, val|
    send("#{key}=", val)
  end
end

.optional_array_options ⇒ Object

private



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# File 'lib/ec2/host/config.rb', line 117

def self.optional_array_options
  @optional_array_options ||= Hash[optional_array_tags.map {|tag|
    [StringUtil.singularize(StringUtil.underscore(tag)), tag]
  }]
end

.optional_options ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 129

def self.optional_options
  @optional_options ||= optional_array_options.merge(optional_string_options)
end

.optional_string_options ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 123

def self.optional_string_options
  @optional_string_options ||= Hash[optional_string_tags.map {|tag|
    [StringUtil.underscore(tag), tag]
  }]
end

.role_max_depth ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 111

def self.role_max_depth
  @role_max_depth ||= Integer(ENV['ROLE_MAX_DEPTH'] || config.fetch('ROLE_MAX_DEPTH', 3))
end

.role_tag_delimiter ⇒ Object 



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# File 'lib/ec2/host/config.rb', line 103

def self.role_tag_delimiter
  @role_tag_delimiter ||= ENV['ROLE_TAG_DELIMITER'] || config.fetch('ROLE_TAG_DELIMITER', ':')
end