Class: DumpFile

Inherits:
Object
  • Object
show all
Defined in:
lib/psql_toys/template/dumps/_dump_file.rb

Overview

Class for single DB dump file

Constant Summary collapse

DB_DUMP_TIMESTAMP = 
'%Y-%m-%d_%H-%M'
DB_DUMP_TIMESTAMP_REGEXP_MAP = 
{
	'Y' => '\d{4}',
	'm' => '\d{2}',
	'd' => '\d{2}',
	'H' => '\d{2}',
	'M' => '\d{2}'
}.freeze
DB_DUMP_TIMESTAMP_REGEXP = 
DB_DUMP_TIMESTAMP_REGEXP_MAP
.each_with_object(DB_DUMP_TIMESTAMP.dup) do |(key, value), result|
	result.gsub! "%#{key}", value
end
DB_DUMP_EXTENSIONS = 
{
	'plain' => '.sql',
	'custom' => '.dump'
}.freeze

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename: nil, format: 'custom') ⇒ DumpFile

Returns a new instance of DumpFile.



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 77

def initialize(filename: nil, format: 'custom')
	if filename
		@extension = File.extname(filename)
		@format = DB_DUMP_EXTENSIONS.key(@extension)
		self.version = filename[/#{DB_DUMP_TIMESTAMP_REGEXP}/o]
	else
		@format = format
		@extension = DB_DUMP_EXTENSIONS[@format]
		self.timestamp = Time.now
	end
end

Class Attribute Details

.db_config ⇒ Object

Returns the value of attribute db_config.



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 49

def db_config
  @db_config
end

.db_dumps_dir ⇒ Object

Returns the value of attribute db_dumps_dir.



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 49

def db_dumps_dir
  @db_dumps_dir
end

Instance Attribute Details

#format ⇒ Object (readonly)

Returns the value of attribute format.



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 75

def format
  @format
end

#timestamp ⇒ Object

Returns the value of attribute timestamp.



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 75

def timestamp
  @timestamp
end

#version ⇒ Object

Returns the value of attribute version.



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 75

def version
  @version
end

Class Method Details

.all ⇒ Object 



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 67

def all
	Dir[File.join(db_dumps_dir, '*')]
		.grep(db_dump_regexp)
		.map! { |file| new filename: file }
		.sort!
end

.db_dump_regexp ⇒ Object 



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 51

def db_dump_regexp
	return unless db_config
	return @db_dump_regexp if defined?(@db_dump_regexp)

	regexp_escaped_db_dump_extensions =
		DB_DUMP_EXTENSIONS.values.map do |db_dump_extension|
			Regexp.escape(db_dump_extension)
		end

	@db_dump_regexp = /^
		#{db_dumps_dir}#{Regexp.escape(File::SEPARATOR)}
		#{db_config[:database]}_#{DB_DUMP_TIMESTAMP_REGEXP}
		(#{regexp_escaped_db_dump_extensions.join('|')})
	$/xo
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 89

def <=>(other)
	timestamp <=> other.timestamp
end

#path ⇒ Object 



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 101

def path
	File.join self.class.db_dumps_dir, "#{self.class.db_config[:database]}_#{version}#{@extension}"
end

#print ⇒ Object 



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 97

def print
	puts self
end

#to_s ⇒ Object 



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# File 'lib/psql_toys/template/dumps/_dump_file.rb', line 93

def to_s
	"#{readable_timestamp} #{format}"
end