158 lines
5.3 KiB
Ruby
158 lines
5.3 KiB
Ruby
require 'open-uri' # allows to load URLs using open()
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require 'deb_importer'
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# The repository format is documented at:
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# https://wiki.debian.org/RepositoryFormat
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include DebImporter
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# List of regular expressions. If the package name matches any
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# of these then the package will not be imported.
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BLACKLIST_NAME_PATTERN=[
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/-data$/,
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/-dev$/,
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/-doc$/,
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/-dbg$/,
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/-common$/,
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/-l10n-/,
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/-locale-/,
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]
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# List of regular expressions. If the package's section matches
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# any of these then the package will not be imported.
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# /?...$ is used because Ubuntu adds their own section - e.g. multiverse/debug
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BLACKLIST_SECTION_PATTERN = [
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/^debian-installer$/,
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/\/?text$/,
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/\/?translations$/,
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/\/?debug$/,
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/\/?kernel$/,
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/\/?libs$/,
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/\/?localization$/,
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/\/?oldlibs$/,
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/\/?otherosfs$/,
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/\/?doc$/,
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/\/?libdevel$/,
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/\/?cli-mono$/,
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]
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# Whether to delete a packag
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REMOVE_BLACKLISTED_PACKAGE = true
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desc "Import package information from Debian-style Packages files"
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task :import_debian => :environment do
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repositories = Rails.configuration.package_sources
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Rails.logger = Logger.new(STDOUT)
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Rails.logger.level = Logger::INFO
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#Rails.logger.level = Logger::DEBUG
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Rails.logger.info "Importing Debian package information"
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repositories.each do |repository|
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Rails.logger.info "Fetching Release file for repository: #{repository[:url]} with components: #{repository[:components]}"
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release = DebImporter::Release.new(repository[:url], repository[:components])
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Rails.logger.info "> Supported architectures are: #{release.architectures}"
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Rails.logger.info "> Supported components are: #{release.components}"
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# TODO: Remember what we imported to show it on the /about page
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release.components.split.each do |component|
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Rails.logger.info "> Component: #{component}"
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release.architectures.split.each do |architecture|
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Rails.logger.info ">> Architecture: #{architecture}"
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# Check if this component and architecture is available on this mirror
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packages = release.packages(component, architecture)
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unless packages
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Rails.logger.error "No packages for component #{component} on architecture #{architecture} found on this mirror"
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next
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end
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Rails.logger.info "Packages file for #{component} on #{architecture} found."
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Rails.logger.debug "Got: #{packages}"
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packages.each do |package|
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Rails.logger.info "> Package: #{package[:Package]}"
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#Rails.logger.debug "Fetching package informaton from the database"
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db_package = Package.find_by name: package[:Package]
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if package_blacklisted? package
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# Should the package get removed from the database?
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if REMOVE_BLACKLISTED_PACKAGE
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if db_package
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Rails.logger.info "Removing blacklisted package '#{package[:Package]}' from database"
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db_package.destroy
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end
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end
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next
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end # if blacklisted
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unless db_package
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Rails.logger.debug "No such package in our database."
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next
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end
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Rails.logger.debug "Found in database: #{db_package.id}"
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update_data(package, db_package)
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end # package.each
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end # architectures.each
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end # components.each
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Rails.logger.info "Done parsing #{repository[:url]} repository."
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Rails.logger.info "--------------------------------------------"
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end # repositories.each
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end # task
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# Update the information about a package in the database
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def update_data(package, db_package)
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Rails.logger.debug "New information: #{package.to_yaml}"
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Rails.logger.debug "Database information: #{db_package.to_yaml}"
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# Check if the version changed
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# Only the actual upstream software version (e.g. 1.2) but not the package
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# revision (e.g. 4:1.2-ubuntu0)
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package[:Version] =~ /(?:\d+\:)?(.+?)(~|\+|\-|$)/
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new_version = $1
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if not new_version
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Rails.logger.fatal "Could not parse version string: #{package[:Version]}"
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end
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if new_version != package[:Version]
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Rails.logger.debug "- Version changed: #{db_package.version} -> #{new_version}"
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db_package.version = new_version
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end
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db_package.save
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# TODO: get the long description from http://de.archive.ubuntu.com/ubuntu/dists/precise/main/i18n/Translation-en
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end
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# Check if a package is blacklisted and should not be imported.
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# This prevents importing boring software that likely does not get a useful screenshot.
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# Argument: Hash containing package information from a Packages file
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def package_blacklisted?(package)
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Rails.logger.debug "Blacklist check of package #{package[:Package]}"
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# TODO: add a flag that allows to manually blacklist a package
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BLACKLIST_SECTION_PATTERN.each do |pattern|
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Rails.logger.debug "Checking package section #{package[:Package]} against pattern #{pattern.inspect}"
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if package[:Section] =~ pattern
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Rails.logger.info " > Blacklisted by section (matched pattern '#{pattern.inspect}')"
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return true
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end
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end
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BLACKLIST_NAME_PATTERN.each do |pattern|
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Rails.logger.debug "Checking package name #{package[:Package]} against pattern #{pattern.inspect}"
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if package[:Package] =~ pattern
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Rails.logger.info " > Blacklisted by name (matched pattern '#{pattern.inspect}')"
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return true
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end
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end
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false
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end
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