Method: S3StreamBackup#initialize

Defined in:
lib/s3streambackup.rb

#initialize(&block) ⇒ S3StreamBackup

Returns a new instance of S3StreamBackup.



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# File 'lib/s3streambackup.rb', line 30

def initialize(&block)
	instance_eval &block
	cli_setup = @cli_setup
	cli_verify_setup = @cli_verify_setup
	settings = CLI.new do
			option :key, 
				short: :k,
				description: 'S3 key',
				default: ENV['AWS_ACCESS_KEY_ID']
			option :secret, 
				short: :s,
				description: 'S3 key secret',
				default_label: '<secret>',
				default: ENV['AWS_SECRET_ACCESS_KEY']
			option :prefix,
				short: :p,
				description: 'prefix under which the backup objects are kept',
				default: ''
			option :log_file,
				short: :l,
				description: 'location of log file; if not specifed log to STDERR'
			switch :plain,
				description: 'use plain connections instead of SSL to S3'
			switch :verbose,
				short: :v,
				description: 'log debug messages'
			switch :debug,
				short: :d,
				description: 'log AWS SDK debug messages'
			argument :bucket,
				description: 'name of bucket to upload data to'
			argument :name,
				description: 'name under which the object will be stored'
			instance_eval &cli_setup if cli_setup
	end.parse! do |settings|
		fail 'AWS_ACCESS_KEY_ID environment not set and --key not used' unless settings.key
		fail 'AWS_SECRET_ACCESS_KEY environment not set and --secret not used' unless settings.secret
		instance_eval &cli_verify_setup if cli_verify_setup
	end

	log = Logger.new(settings.log_file ? settings.log_file : STDERR)
	log.formatter = proc do |severity, datetime, progname, msg|
		"[#{datetime.utc.strftime "%Y-%m-%d %H:%M:%S.%6N %Z"}] [#{$$}] #{severity}: #{msg.strip}\n"
	end

	log.level = Logger::INFO
	log.level = Logger::DEBUG if settings.verbose or settings.debug

	begin
		s3 = AWS::S3.new(
			access_key_id: settings.key,
			secret_access_key: settings.secret,
			logger: settings.debug ? log : nil,
			log_level: :debug,
			use_ssl: ! settings.plain
		)
		@main.call(settings, log, s3)
	rescue => error
		msg = "#{error.class.name}: #{error.message}\n#{error.backtrace.join("\n")}"
		log.error msg
		STDERR.write msg 
		exit 10
	end
end