Ru-b2-SQL-Backups/mysql_database_config.rb

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# frozen_string_literal: true
require 'json'
require_relative 'loggman'
# class for handling the config
class MysqlDatabaseConfig
def initialize(config_file, logger)
@config_file = config_file
@logger = logger
end
def generate # rubocop:disable Metrics/AbcSize, Metrics/MethodLength
@logger.info("Generating MySQL database configuration file: #{@config_file}.")
if File.exist?(@config_file)
@logger.info('Config file already exists, skipping generation.')
else
begin
mysql_host = prompt('MySQL Host')
mysql_username = prompt('MySQL Username')
mysql_password = prompt('MySQL Password')
backup_dir = prompt('Backup Directory', default: '.')
local_retention_days = prompt('Local backup retention in days (1 day minimum)', default: '1').to_i
@config = {
'mysql' => {
'host' => mysql_host,
'username' => mysql_username,
'password' => mysql_password
},
'backup_dir' => backup_dir,
'local_retention_days' => local_retention_days
}
b2_enabled = prompt_bool('Enable Backblaze B2?', default: false)
@config['b2_enabled'] = b2_enabled
if b2_enabled
@b2_key_id = prompt('B2 Key ID')
@b2_application_key = prompt('B2 Application Key')
@b2_bucket_name = prompt('B2 Bucket Name')
b2_retention_days = prompt('B2 backup retention in days (1 day minimum)', default: '1').to_i
@config['b2'] = {
'key_id' => @b2_key_id,
'application_key' => @b2_application_key,
'bucket_name' => @b2_bucket_name,
'retention_days' => b2_retention_days
}
end
File.write(@config_file, JSON.pretty_generate(@config))
@logger.info("Config file generated: #{@config_file}")
rescue StandardError => e
@logger.error("An error occurred while generating MySQL database configuration file: #{e.message}")
@logger.debug("Backtrace: #{e.backtrace}")
end
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# ask the user if they want to setup a cron job for the program
cron_job = prompt_bool('Do you want to setup a cron job for this program?', default: false)
if cron_job
# how often the program should run
cron_interval = prompt('How often do you want the program to run? (in minutes, e.g. "60" for every hour)',
default: '60').to_i
# write the cron job to crontab
`echo "*/#{cron_interval} * * * * /usr/bin/PixelatedStudios/Ruby/Ru-b2-SQL-Backups/starter.rb" >> /etc/crontab`
@logger.info("Cron job added to /etc/crontab to run every #{cron_interval} minutes.")
end
end
end
private
def prompt(message, default: nil)
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print message
print " [#{default}]" if default
print ': '
value = gets.chomp
value.empty? ? default : value
end
def prompt_bool(message, default: false)
prompt("#{message} (y/n)", default: default) =~ /y|yes/i
end
end
config_file = 'config.json'
logger = Loggman.new
begin
logger.info('Starting script.')
config_generator = MysqlDatabaseConfig.new(config_file, logger)
config_generator.generate
logger.info('MySQL database configuration file generation completed successfully.')
logger.info('Script completed successfully.')
rescue StandardError => e
logger.error("An error occurred: #{e.message}")
logger.debug("Backtrace: #{e.backtrace}")
end