2c960727d6
This commit modifies the upload_to_b2 method in the MysqlDatabaseBackup class to search for an existing backup file with the same name as the backup file being uploaded in a specified Backblaze B2 bucket. The implementation retrieves a list of all files in the bucket using the b2 ls command and then iterates over each line to search for a file with the same name as the backup file. If a matching file is found, the implementation extracts its file ID using a regular expression and then uses the b2 delete-file-version command to delete the file from the bucket. Note that this implementation assumes that the backup file has a unique name.
72 lines
2.3 KiB
Ruby
72 lines
2.3 KiB
Ruby
# frozen_string_literal: true
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require 'json'
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# class for creating, managing and deleting backups both locally and in B2
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class MysqlDatabaseBackup
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def initialize(config_file)
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config = JSON.parse(File.read(config_file))
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@host = config['mysql']['host']
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@username = config['mysql']['username']
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@password = config['mysql']['password']
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@backup_dir = config['backup_dir'] || '.'
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@b2_enabled = config['b2_enabled'] || false
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@b2_key_id = config['b2']&.dig('key_id')
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@b2_application_key = config['b2']&.dig('application_key')
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@b2_bucket_name = config['b2']&.dig('bucket_name')
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end
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def backup
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puts 'Backing up sql'
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timestamp = Time.now.strftime('%Y-%m-%d_%H-%M-%S')
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puts "Timestamp = #{timestamp}"
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backup_file = File.join(@backup_dir, "database-backup_#{timestamp}.sql")
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puts "backup_file = #{backup_file}"
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puts "MySQL Info = #{@host} #{@username} #{@password} #{backup_file}"
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`mysqldump --host=#{@host} --user=#{@username} --password='#{@password}' --all-databases > #{backup_file}`
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delete_old_backups
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return unless @b2_enabled
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upload_to_b2(backup_file)
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end
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def delete_old_backups
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max_age_hours = 48
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max_age_seconds = max_age_hours * 60 * 60
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backups = Dir[File.join(@backup_dir, 'database-backup_*.sql')]
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return if backups.empty?
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backups.each do |backup|
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age_seconds = Time.now - File.mtime(backup)
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if age_seconds > max_age_seconds
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puts "Deleted old backup: #{backup}"
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File.delete(backup)
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end
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end
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end
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def upload_to_b2(backup_file)
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b2_file_name = File.basename(backup_file)
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b2_file_url = "b2://#{@b2_bucket_name}/#{b2_file_name}"
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# Check if a backup file with the same name already exists in the B2 bucket
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existing_files = `b2 ls #{@b2_bucket_name}`
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existing_files.each_line do |line|
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next unless line.include?(b2_file_name)
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file_id = line.match(/"fileId": "([^"]+)"/)[1]
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`b2 delete-file-version #{@b2_bucket_name} #{b2_file_name} #{file_id}`
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puts "Deleted existing backup file from B2 bucket: #{b2_file_url}"
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end
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# Upload the backup file to the B2 bucket
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`b2 upload-file #{@b2_bucket_name} #{backup_file} #{b2_file_name}`
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puts "Uploaded backup file to B2 bucket: #{b2_file_url}"
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end
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end
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