146 lines
4.1 KiB
Ruby
146 lines
4.1 KiB
Ruby
# frozen_string_literal: true
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module BackupRestore
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class S3BackupStore < BackupStore
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UPLOAD_URL_EXPIRES_AFTER_SECONDS ||= 21_600 # 6 hours
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def initialize(opts = {})
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@s3_options = S3Helper.s3_options(SiteSetting)
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@s3_options.merge!(opts[:s3_options]) if opts[:s3_options]
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@s3_helper = S3Helper.new(s3_bucket_name_with_prefix, '', @s3_options.clone)
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end
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def remote?
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true
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end
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def file(filename, include_download_source: false)
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obj = @s3_helper.object(filename)
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create_file_from_object(obj, include_download_source) if obj.exists?
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end
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def delete_file(filename)
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obj = @s3_helper.object(filename)
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if obj.exists?
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obj.delete
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reset_cache
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end
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end
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def download_file(filename, destination_path, failure_message = nil)
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@s3_helper.download_file(filename, destination_path, failure_message)
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end
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def upload_file(filename, source_path, content_type)
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obj = @s3_helper.object(filename)
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raise BackupFileExists.new if obj.exists?
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obj.upload_file(source_path, content_type: content_type)
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reset_cache
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end
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def generate_upload_url(filename)
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obj = @s3_helper.object(filename)
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raise BackupFileExists.new if obj.exists?
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ensure_cors!
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presigned_url(obj, :put, UPLOAD_URL_EXPIRES_AFTER_SECONDS)
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rescue Aws::Errors::ServiceError => e
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Rails.logger.warn("Failed to generate upload URL for S3: #{e.message.presence || e.class.name}")
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raise StorageError.new(e.message.presence || e.class.name)
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end
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def vacate_legacy_prefix
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legacy_s3_helper = S3Helper.new(s3_bucket_name_with_legacy_prefix, '', @s3_options.clone)
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bucket, prefix = s3_bucket_name_with_prefix.split('/', 2)
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legacy_keys = legacy_s3_helper.list
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.reject { |o| o.key.starts_with? prefix }
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.map { |o| o.key }
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legacy_keys.each do |legacy_key|
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@s3_helper.s3_client.copy_object({
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copy_source: File.join(bucket, legacy_key),
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bucket: bucket,
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key: File.join(prefix, legacy_key.split('/').last)
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})
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legacy_s3_helper.delete_object(legacy_key)
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end
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end
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private
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def unsorted_files
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objects = []
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@s3_helper.list.each do |obj|
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if obj.key.match?(file_regex)
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objects << create_file_from_object(obj)
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end
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end
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objects
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rescue Aws::Errors::ServiceError => e
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Rails.logger.warn("Failed to list backups from S3: #{e.message.presence || e.class.name}")
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raise StorageError.new(e.message.presence || e.class.name)
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end
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def create_file_from_object(obj, include_download_source = false)
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expires = S3Helper::DOWNLOAD_URL_EXPIRES_AFTER_SECONDS
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BackupFile.new(
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filename: File.basename(obj.key),
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size: obj.size,
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last_modified: obj.last_modified,
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source: include_download_source ? presigned_url(obj, :get, expires) : nil
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)
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end
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def presigned_url(obj, method, expires_in_seconds)
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obj.presigned_url(method, expires_in: expires_in_seconds)
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end
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def ensure_cors!
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rule = {
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allowed_headers: ["*"],
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allowed_methods: ["PUT"],
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allowed_origins: [Discourse.base_url_no_prefix],
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max_age_seconds: 3000
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}
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@s3_helper.ensure_cors!([rule])
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end
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def cleanup_allowed?
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!SiteSetting.s3_disable_cleanup
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end
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def s3_bucket_name_with_prefix
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File.join(SiteSetting.s3_backup_bucket, RailsMultisite::ConnectionManagement.current_db)
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end
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def s3_bucket_name_with_legacy_prefix
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if Rails.configuration.multisite
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File.join(SiteSetting.s3_backup_bucket, "backups", RailsMultisite::ConnectionManagement.current_db)
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else
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SiteSetting.s3_backup_bucket
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end
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end
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def file_regex
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@file_regex ||= begin
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path = @s3_helper.s3_bucket_folder_path || ""
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if path.present?
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path = "#{path}/" unless path.end_with?("/")
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path = Regexp.quote(path)
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end
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/^#{path}[^\/]*\.t?gz$/i
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end
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end
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def free_bytes
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nil
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end
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end
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end
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