gitlab-org--gitlab-foss/lib/backup/database.rb
Jacob Vosmaer 77b57c114b Drop all tables before restoring a PostgreSQL DB
Invoking 'db:schema:load' turned out to be a bad idea: when downgrading
an existing GitLab installation, the schema of the newer version would
be preserved when trying to import the old version.
2014-03-28 13:44:46 +01:00

75 lines
2.2 KiB
Ruby

require 'yaml'
module Backup
class Database
attr_reader :config, :db_dir
def initialize
@config = YAML.load_file(File.join(Rails.root,'config','database.yml'))[Rails.env]
@db_dir = File.join(Gitlab.config.backup.path, 'db')
FileUtils.mkdir_p(@db_dir) unless Dir.exists?(@db_dir)
end
def dump
success = case config["adapter"]
when /^mysql/ then
print "Dumping MySQL database #{config['database']} ... "
system('mysqldump', *mysql_args, config['database'], out: db_file_name)
when "postgresql" then
print "Dumping PostgreSQL database #{config['database']} ... "
pg_env
system('pg_dump', config['database'], out: db_file_name)
end
report_success(success)
end
def restore
success = case config["adapter"]
when /^mysql/ then
print "Restoring MySQL database #{config['database']} ... "
system('mysql', *mysql_args, config['database'], in: db_file_name)
when "postgresql" then
print "Restoring PostgreSQL database #{config['database']} ... "
# Drop all tables because PostgreSQL DB dumps do not contain DROP TABLE
# statements like MySQL.
Rake::Task["gitlab:db:drop_all_tables"].invoke
pg_env
system('psql', config['database'], '-f', db_file_name)
end
report_success(success)
end
protected
def db_file_name
File.join(db_dir, 'database.sql')
end
def mysql_args
args = {
'host' => '--host',
'port' => '--port',
'socket' => '--socket',
'username' => '--user',
'encoding' => '--default-character-set',
'password' => '--password'
}
args.map { |opt, arg| "#{arg}=#{config[opt]}" if config[opt] }.compact
end
def pg_env
ENV['PGUSER'] = config["username"] if config["username"]
ENV['PGHOST'] = config["host"] if config["host"]
ENV['PGPORT'] = config["port"].to_s if config["port"]
ENV['PGPASSWORD'] = config["password"].to_s if config["password"]
end
def report_success(success)
if success
puts '[DONE]'.green
else
puts '[FAILED]'.red
end
end
end
end