109 lines
3.3 KiB
Ruby
109 lines
3.3 KiB
Ruby
# frozen_string_literal: true
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module Packages
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module Npm
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class CreatePackageService < ::Packages::CreatePackageService
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include Gitlab::Utils::StrongMemoize
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PACKAGE_JSON_NOT_ALLOWED_FIELDS = %w[readme readmeFilename].freeze
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def execute
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return error('Version is empty.', 400) if version.blank?
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return error('Package already exists.', 403) if current_package_exists?
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return error('File is too large.', 400) if file_size_exceeded?
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ApplicationRecord.transaction { create_npm_package! }
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end
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private
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def create_npm_package!
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package = create_package!(:npm, name: name, version: version)
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::Packages::CreatePackageFileService.new(package, file_params).execute
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::Packages::CreateDependencyService.new(package, package_dependencies).execute
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::Packages::Npm::CreateTagService.new(package, dist_tag).execute
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package.create_npm_metadatum!(package_json: package_json)
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package
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end
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def current_package_exists?
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project.packages
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.npm
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.with_name(name)
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.with_version(version)
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.not_pending_destruction
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.exists?
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end
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def name
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params[:name]
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end
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def version
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strong_memoize(:version) do
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params[:versions].each_key.first
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end
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end
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def version_data
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params[:versions][version]
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end
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def package_json
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version_data.except(*PACKAGE_JSON_NOT_ALLOWED_FIELDS)
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end
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def dist_tag
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params['dist-tags'].each_key.first
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end
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def package_file_name
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strong_memoize(:package_file_name) do
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"#{name}-#{version}.tgz"
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end
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end
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def attachment
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strong_memoize(:attachment) do
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params['_attachments'][package_file_name]
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end
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end
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# TODO (technical debt): Extract the package size calculation to its own component and unit test it separately.
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def calculated_package_file_size
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strong_memoize(:calculated_package_file_size) do
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# This calculation is based on:
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# 1. 4 chars in a Base64 encoded string are 3 bytes in the original string. Meaning 1 char is 0.75 bytes.
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# 2. The encoded string may have 1 or 2 extra '=' chars used for padding. Each padding char means 1 byte less in the original string.
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# Reference:
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# - https://blog.aaronlenoir.com/2017/11/10/get-original-length-from-base-64-string/
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# - https://en.wikipedia.org/wiki/Base64#Decoding_Base64_with_padding
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encoded_data = attachment['data']
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((encoded_data.length * 0.75 ) - encoded_data[-2..].count('=')).to_i
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end
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end
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def file_params
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{
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file: CarrierWaveStringFile.new(Base64.decode64(attachment['data'])),
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size: calculated_package_file_size,
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file_sha1: version_data[:dist][:shasum],
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file_name: package_file_name,
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build: params[:build]
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}
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end
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def package_dependencies
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_version, versions_data = params[:versions].first
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versions_data
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end
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def file_size_exceeded?
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project.actual_limits.exceeded?(:npm_max_file_size, calculated_package_file_size)
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end
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end
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end
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end
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