97 lines
3.1 KiB
Ruby
97 lines
3.1 KiB
Ruby
# frozen_string_literal: true
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# This service manages the whole worflow of discovering the Lfs files in a
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# repository, linking them to the project and downloading (and linking) the non
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# existent ones.
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module Projects
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module LfsPointers
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class LfsObjectDownloadListService < BaseService
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include Gitlab::Utils::StrongMemoize
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HEAD_REV = 'HEAD'
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LFS_ENDPOINT_PATTERN = /^\t?url\s*=\s*(.+)$/.freeze
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LFS_BATCH_API_ENDPOINT = '/info/lfs/objects/batch'
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LfsObjectDownloadListError = Class.new(StandardError)
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def execute
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return [] unless project&.lfs_enabled?
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if external_lfs_endpoint?
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# If the endpoint host is different from the import_url it means
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# that the repo is using a third party service for storing the LFS files.
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# In this case, we have to disable lfs in the project
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disable_lfs!
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return []
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end
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# Downloading the required information and gathering it inside an
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# LfsDownloadObject for each oid
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#
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LfsDownloadLinkListService
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.new(project, remote_uri: current_endpoint_uri)
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.execute(lfs_pointers_in_repository)
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rescue LfsDownloadLinkListService::DownloadLinksError => e
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raise LfsObjectDownloadListError, "The LFS objects download list couldn't be imported. Error: #{e.message}"
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end
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private
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def external_lfs_endpoint?
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lfsconfig_endpoint_uri && lfsconfig_endpoint_uri.host != import_uri.host
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end
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def disable_lfs!
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unless project.update(lfs_enabled: false)
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raise LfsDownloadLinkListService::DownloadLinksError, "Invalid project state"
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end
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end
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# Retrieves all lfs pointers in the repository
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def lfs_pointers_in_repository
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@lfs_pointers_in_repository ||= LfsListService.new(project).execute
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end
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def lfsconfig_endpoint_uri
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strong_memoize(:lfsconfig_endpoint_uri) do
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# Retrieveing the blob data from the .lfsconfig file
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data = project.repository.lfsconfig_for(HEAD_REV)
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# Parsing the data to retrieve the url
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parsed_data = data&.match(LFS_ENDPOINT_PATTERN)
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if parsed_data
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URI.parse(parsed_data[1]).tap do |endpoint|
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endpoint.user ||= import_uri.user
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endpoint.password ||= import_uri.password
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end
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end
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end
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rescue URI::InvalidURIError
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raise LfsObjectDownloadListError, 'Invalid URL in .lfsconfig file'
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end
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def import_uri
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@import_uri ||= URI.parse(project.import_url)
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rescue URI::InvalidURIError
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raise LfsObjectDownloadListError, 'Invalid project import URL'
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end
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def current_endpoint_uri
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(lfsconfig_endpoint_uri || default_endpoint_uri)
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end
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# The import url must end with '.git' here we ensure it is
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def default_endpoint_uri
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@default_endpoint_uri ||= begin
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import_uri.dup.tap do |uri|
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path = uri.path.gsub(%r(/$), '')
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path += '.git' unless path.ends_with?('.git')
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uri.path = path + LFS_BATCH_API_ENDPOINT
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end
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end
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end
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end
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end
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end
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