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Contents
module Departure
# Holds the parameters of the DB connection and formats them to string
class ConnectionDetails
# Constructor
#
# @param [Hash] connection parametes as used in #establish_conneciton
def initialize(connection_data)
@connection_data = connection_data
end
# Returns the details formatted as an string to be used with
# pt-online-schema-change. It follows the mysql client's format.
#
# @return [String]
def to_s
@to_s ||= "-h #{host} -u #{user} #{password_argument}"
end
# TODO: Doesn't the abstract adapter already handle this somehow?
# Returns the database name. If PERCONA_DB_NAME is passed its value will be
# used instead
#
# Returns the database name
#
# @return [String]
def database
ENV.fetch('PERCONA_DB_NAME', connection_data[:database])
end
# Returns the password fragment of the details string if a password is passed
#
# @return [String]
def password_argument
if password.present?
"-p #{password}"
else
''
end
end
private
attr_reader :connection_data
# Returns the database host name, defaulting to localhost. If PERCONA_DB_HOST
# is passed its value will be used instead
#
# @return [String]
def host
ENV.fetch('PERCONA_DB_HOST', connection_data[:host]) || 'localhost'
end
# Returns the database user. If PERCONA_DB_USER is passed its value will be
# used instead
#
# @return [String]
def user
ENV.fetch('PERCONA_DB_USER', connection_data[:username])
end
# Returns the database user's password. If PERCONA_DB_PASSWORD is passed its
# value will be used instead
#
# @return [String]
def password
ENV.fetch('PERCONA_DB_PASSWORD', connection_data[:password])
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems