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FEATURE: migrate vanilla importer to new import architecture
This commit is contained in:
Régis Hanol
@ -1 +1,232 @@
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# TODO: need to migrate it from https://github.com/discourse/discourse/blob/master/lib/tasks/vanilla.thor
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require File.expand_path(File.dirname(__FILE__) + "/base.rb")
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require "csv"
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class ImportScripts::Vanilla < ImportScripts::Base
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def initialize
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super
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@vanilla_file = ARGV[0]
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raise ArgumentError.new('Vanilla file argument missing. Provide full path to vanilla csv file.') if @vanilla_file.blank?
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end
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def execute
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check_file_exist
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parse_file
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import_users
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import_categories
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import_topics
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import_posts
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import_private_topics
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import_private_posts
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end
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private
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def check_file_exist
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raise ArgumentError.new("File does not exist: #{@vanilla_file}") unless File.exist?(@vanilla_file)
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end
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def parse_file
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puts "parsing file..."
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file = read_file
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# TODO: parse header & validate version number
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header = file.readline
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until file.eof?
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line = file.readline
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next if line.blank?
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next if line.start_with?("//")
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if m = /^Table: (\w+)/.match(line)
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# extract table name
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table = m[1].underscore.pluralize
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# read the data until an empty line
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data = []
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# first line is the table definition, turn that into a proper csv header
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data << file.readline.split(",").map { |c| c.split(":")[0].underscore }.join(",")
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until (line = file.readline).blank?
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data << line.strip
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end
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# PERF: don't parse useless tables
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next if ["activities", "user_meta"].include? table
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# parse the data
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puts "parsing #{table}..."
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parsed_data = CSV.parse(data.join("\n"), headers: true, header_converters: :symbol).map { |row| row.to_hash }
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instance_variable_set("@#{table}".to_sym, parsed_data)
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end
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end
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end
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def read_file
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puts "reading file..."
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string = File.read(@vanilla_file).gsub("\\N", "")
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.gsub(/\\$\n/m, "\\n")
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.gsub("\\,", ",")
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.gsub(/(?<!\\)\\"/, '""')
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.gsub(/\\\\\\"/, '\\""')
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StringIO.new(string)
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end
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def import_users
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admin_role_id = @roles.select { |r| r[:name] == "Administrator" }.first[:role_id]
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moderator_role_id = @roles.select { |r| r[:name] == "Moderator" }.first[:role_id]
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create_users(@users) do |user|
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next if user[:name] == "[Deleted User]"
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{
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id: user[:user_id],
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email: user[:email],
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name: user[:name],
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created_at: parse_date(user[:date_inserted]),
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bio_raw: clean_up(user[:discovery_text]),
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moderator: @user_roles.select { |ur| ur[:user_id] == user[:user_id] }.map { |ur| ur[:role_id] }.include?(moderator_role_id),
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admin: @user_roles.select { |ur| ur[:user_id] == user[:user_id] }.map { |ur| ur[:role_id] }.include?(admin_role_id),
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}
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end
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end
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def import_categories
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# save some information about the root category
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@root_category = @categories.select { |c| c[:category_id] == "-1" }.first
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@root_category_created_at = parse_date(@root_category[:date_inserted])
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# removes root category
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@categories.reject! { |c| c[:category_id] == "-1" }
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# adds root's child categories
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first_level_categories = @categories.select { |c| c[:parent_category_id] == "-1" }
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if first_level_categories.count > 0
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puts "", "importing first-level categories..."
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create_categories(first_level_categories) { |category| import_category(category) }
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# adds other categories
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second_level_categories = @categories.select { |c| c[:parent_category_id] != "-1" }
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if second_level_categories.count > 0
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puts "", "importing second-level categories..."
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create_categories(second_level_categories) { |category| import_category(category) }
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end
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end
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end
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def import_category(category)
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c = {
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id: category[:category_id],
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name: category[:name],
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user_id: user_id_from_imported_user_id(category[:insert_user_id]),
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position: category[:sort].to_i,
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created_at: parse_category_date(category[:date_inserted]),
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description: clean_up(category[:description]),
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}
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if category[:parent_category_id] != "-1"
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parent_category = category_from_imported_category_id(category[:parent_category_id].to_i)
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c[:parent_category_id] = parent_category[:id] if parent_category
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end
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c
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end
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def parse_category_date(date)
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date == "0000-00-00 00:00:00" ? @root_category_created_at : parse_date(date)
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end
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def import_topics
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puts "", "importing topics..."
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create_posts(@discussions) do |discussion|
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{
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id: "discussion#" + discussion[:discussion_id],
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user_id: user_id_from_imported_user_id(discussion[:insert_user_id]),
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title: discussion[:name],
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category_id: category_from_imported_category_id(discussion[:category_id]).try(:id),
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raw: clean_up(discussion[:body]),
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created_at: parse_date(discussion[:date_inserted]),
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}
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end
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end
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def import_posts
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puts "", "importing posts..."
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create_posts(@comments) do |comment|
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next unless t = topic_lookup_from_imported_post_id("discussion#" + comment[:discussion_id])
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{
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id: "comment#" + comment[:comment_id],
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user_id: user_id_from_imported_user_id(comment[:insert_user_id]),
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topic_id: t[:topic_id],
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raw: clean_up(comment[:body]),
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created_at: parse_date(comment[:date_inserted]),
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}
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end
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end
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def import_private_topics
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puts "", "importing private topics..."
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create_posts(@conversations) do |conversation|
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# list all other user ids in the conversation
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user_ids_in_conversation = @user_conversations.select { |uc| uc[:conversation_id] == conversation[:conversation_id] && uc[:user_id] != conversation[:insert_user_id] }
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.map { |uc| uc[:user_id] }
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# retrieve their emails
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user_emails_in_conversation = @users.select { |u| user_ids_in_conversation.include?(u[:user_id]) }
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.map { |u| u[:email] }
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# retrieve their usernames from the database
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target_usernames = User.where("email IN (?)", user_emails_in_conversation).pluck(:username).to_a
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next if target_usernames.blank?
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user = find_user_by_import_id(conversation[:insert_user_id]) || Discourse.system_user
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first_message = @conversation_messages.select { |cm| cm[:message_id] == conversation[:first_message_id] }.first
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{
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archetype: Archetype.private_message,
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id: "conversation#" + conversation[:conversation_id],
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user_id: user.id,
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title: "Private message from #{user.username}",
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target_usernames: target_usernames,
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raw: clean_up(first_message[:body]),
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created_at: parse_date(conversation[:date_inserted]),
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}
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end
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end
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def import_private_posts
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puts "", "importing private posts..."
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first_message_ids = Set.new(@conversations.map { |c| c[:first_message_id] }.to_a)
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@conversation_messages.reject! { |cm| first_message_ids.include?(cm[:message_id]) }
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create_posts(@conversation_messages) do |message|
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next unless t = topic_lookup_from_imported_post_id("conversation#" + message[:conversation_id])
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{
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archetype: Archetype.private_message,
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id: "message#" + message[:message_id],
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user_id: user_id_from_imported_user_id(message[:insert_user_id]),
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topic_id: t[:topic_id],
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raw: clean_up(message[:body]),
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created_at: parse_date(message[:date_inserted]),
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}
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end
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end
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def parse_date(date)
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DateTime.strptime(date, "%Y-%m-%d %H:%M:%S")
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end
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def clean_up(raw)
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(raw || "").gsub("\\n", "\n")
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.gsub(/<\/?pre\s*>/i, "\n```\n")
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.gsub(/<\/?code\s*>/i, "`")
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.gsub("<", "<")
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.gsub(">", ">")
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end
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end
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ImportScripts::Vanilla.new.perform
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