discourse/script/import_scripts/question2answer.rb

561 lines
17 KiB
Ruby

require 'mysql2'
require File.expand_path(File.dirname(__FILE__) + "/base.rb")
require 'htmlentities'
begin
require 'php_serialize' # https://github.com/jqr/php-serialize
rescue LoadError
puts
puts 'php_serialize not found.'
puts 'Add to Gemfile, like this: '
puts
puts "echo gem \\'php-serialize\\' >> Gemfile"
puts "bundle install"
exit
end
class ImportScripts::Question2Answer < ImportScripts::Base
BATCH_SIZE = 1000
# CHANGE THESE BEFORE RUNNING THE IMPORTER
DB_HOST ||= ENV['DB_HOST'] || "localhost"
DB_NAME ||= ENV['DB_NAME']
DB_PW ||= ENV['DB_PW']
DB_USER ||= ENV['DB_USER']
TIMEZONE ||= ENV['TIMEZONE'] || "America/Los_Angeles"
TABLE_PREFIX ||= ENV['TABLE_PREFIX'] || "qa_"
MAIN_APP_DB_NAME = "primary_db"
puts "#{DB_USER}:#{DB_PW}@#{DB_HOST} wants #{DB_NAME}"
def initialize
super
@old_username_to_new_usernames = {}
@tz = TZInfo::Timezone.get(TIMEZONE)
@htmlentities = HTMLEntities.new
@client = Mysql2::Client.new(
host: DB_HOST,
username: DB_USER,
password: DB_PW,
database: DB_NAME
)
rescue Exception => e
puts '=' * 50
puts e.message
puts <<EOM
Cannot connect in to database.
Hostname: #{DB_HOST}
Username: #{DB_USER}
Password: #{DB_PW}
database: #{DB_NAME}
Edit the script or set these environment variables:
export DB_HOST="localhost"
export DB_NAME=""
export DB_PW='password'
export DB_USER="root"
export TABLE_PREFIX="qa_"
Exiting.
EOM
exit
end
def execute
import_users
import_categories
import_topics
import_posts
import_likes
post_process_posts
create_permalinks
end
def import_users
puts "", "importing users"
#only import users that have posted or voted on Q2A
user_count = mysql_query("SELECT COUNT(id) count FROM #{MAIN_APP_DB_NAME}.users u WHERE EXISTS (SELECT 1 FROM #{TABLE_PREFIX}posts p WHERE p.userid=u.id) or EXISTS (SELECT 1 FROM #{TABLE_PREFIX}uservotes u WHERE u.userid=u.id)").first["count"]
last_user_id = -1
batches(BATCH_SIZE) do |offset|
users = mysql_query(<<-SQL
SELECT u.id, u.email, first_name, last_name, u.created_at, last_sign_in_at, u.custom_field_1, u.website website, u.city city, u.state state, i.cdn_slug cdn_slug
FROM #{MAIN_APP_DB_NAME}.users u
LEFT JOIN #{MAIN_APP_DB_NAME}.images i
ON i.id=u.image_id
WHERE u.id > #{last_user_id} AND
(EXISTS (SELECT 1 FROM #{TABLE_PREFIX}posts p WHERE p.userid=u.id) or EXISTS (SELECT 1 FROM #{TABLE_PREFIX}uservotes u WHERE u.userid=u.id))
ORDER BY u.id
LIMIT #{BATCH_SIZE}
SQL
).to_a
break if users.empty?
last_user_id = users[-1]["id"]
users.reject! { |u| @lookup.user_already_imported?(u["id"].to_i) }
create_users(users, total: user_count, offset: offset) do |user|
email = user["email"].presence
username = @htmlentities.decode(user["email"]).strip.split("@").first
avatar_url = "https://your_image_bucket/#{user['cdn_slug']}" if user['cdn_slug']
{
id: user["id"],
name: "#{user['first_name']} #{user['last_name']}",
username: username,
website: user['website'],
email: email,
avatar_url: avatar_url,
custom_fields: user["custom_field_1"] ? { user_field_1: user["custom_field_1"] } : {},
location: user["city"] && user["state"] ? "#{user['city']}, #{user['state']}" : nil,
created_at: user["created_at"],
last_seen_at: user["last_sign_in_at"],
post_create_action: proc do |u|
@old_username_to_new_usernames[user["username"]] = u.username
end
}
end
end
end
def import_categories
puts "", "importing top level categories..."
categories = mysql_query("SELECT categoryid, parentid, title, position FROM #{TABLE_PREFIX}categories ORDER BY categoryid").to_a
top_level_categories = categories.select { |c| c["parentid"].nil? }
create_categories(top_level_categories) do |category|
{
id: category["categoryid"],
name: @htmlentities.decode(category["title"]).strip,
position: category["position"]
}
end
puts "", "importing children categories..."
children_categories = categories.select { |c| !c["parentid"].nil? }
top_level_category_ids = Set.new(top_level_categories.map { |c| c["categoryid"] })
# cut down the tree to only 2 levels of categories
children_categories.each do |cc|
while !top_level_category_ids.include?(cc["parentid"])
cc["parentid"] = categories.detect { |c| c["categoryid"] == cc["parentid"] }["parentid"]
end
end
create_categories(children_categories) do |category|
{
id: category["categoryid"],
name: @htmlentities.decode(category["title"]).strip,
position: category["position"],
parent_category_id: category_id_from_imported_category_id(category["parentid"])
}
end
end
def import_topics
puts "", "importing topics..."
topic_count = mysql_query("SELECT COUNT(postid) count FROM #{TABLE_PREFIX}posts WHERE type in ('Q', 'Q_HIDDEN')").first["count"]
last_topic_id = -1
batches(BATCH_SIZE) do |offset|
topics = mysql_query(<<-SQL
SELECT p.postid, p.type, p.categoryid, p.closedbyid, p.userid postuserid, p.views, p.created, p.title, p.content raw
FROM #{TABLE_PREFIX}posts p
WHERE p.postid > #{last_topic_id}
and p.parentid IS NULL
and type IN ('Q', 'Q_HIDDEN')
ORDER BY p.postid
LIMIT #{BATCH_SIZE}
SQL
).to_a
break if topics.empty?
last_topic_id = topics[-1]["postid"]
topics.reject! { |t| @lookup.post_already_imported?("thread-#{t["postid"]}") }
create_posts(topics, total: topic_count, offset: offset) do |topic|
begin
raw = preprocess_post_raw(topic["raw"])
rescue => e
puts e.message
end
topic_id = "thread-#{topic["postid"]}"
t = {
id: topic_id,
user_id: user_id_from_imported_user_id(topic["postuserid"]) || Discourse::SYSTEM_USER_ID,
title: @htmlentities.decode(topic["title"]).strip[0...255],
category: category_id_from_imported_category_id(topic["categoryid"]),
raw: raw,
created_at: topic["created"],
visible: topic["closedbyid"].to_i == 0 && topic["type"] != 'Q_HIDDEN',
views: topic["views"],
}
t
end
# uncomment below lines to create permalink
topics.each do |thread|
topic_id = "thread-#{thread["postid"]}"
topic = topic_lookup_from_imported_post_id(topic_id)
if topic.present?
title_slugified = slugify(thread["title"], false, 50) if thread["title"].present?
url_slug = "#{thread["postid"]}/#{title_slugified}" if thread["title"].present?
Permalink.create(url: url_slug, topic_id: topic[:topic_id].to_i) if url_slug.present? && topic[:topic_id].present?
end
end
end
end
def slugify(title, ascii_only, max_length)
words = title.downcase.gsub(/[^a-zA-Z0-9\s]/, '').split(" ")
word_lengths = {}
words.each_with_index do |word, idx|
word_lengths[idx] = word.length
end
remaining = max_length
if word_lengths.inject(0) { |sum, (_, v)| sum + v } > remaining
word_lengths = Hash[word_lengths.sort { |x, y| y[1] <=> x[1] }]
word_lengths.each do |idx, word_length|
if remaining > 0
remaining -= word_length
else
words[idx] = nil
end
end
end
words = words.compact.join("-")
end
def import_posts
puts "", "importing posts..."
post_count = mysql_query(<<-SQL
SELECT COUNT(postid) count
FROM #{TABLE_PREFIX}posts p
WHERE p.parentid IS NOT NULL
SQL
).first["count"]
last_post_id = -1
batches(BATCH_SIZE) do |offset|
posts = mysql_query(<<-SQL
SELECT p.postid, p.type, p.parentid, p.categoryid, p.closedbyid, p.userid, p.views, p.created, p.title, p.content
FROM #{TABLE_PREFIX}posts p
WHERE p.parentid IS NOT NULL
AND p.postid > #{last_post_id}
AND type in ('A')
AND closedbyid IS NULL
ORDER BY p.postid
LIMIT #{BATCH_SIZE}
SQL
).to_a
break if posts.empty?
last_post_id = posts[-1]["postid"]
posts.reject! { |p| @lookup.post_already_imported?(p["postid"].to_i) }
create_posts(posts, total: post_count, offset: offset) do |post|
begin
raw = preprocess_post_raw(post["content"])
rescue => e
puts e.message
end
next if raw.blank?
next unless topic = topic_lookup_from_imported_post_id("thread-#{post["parentid"]}")
p = {
id: post["postid"],
user_id: user_id_from_imported_user_id(post["userid"]) || Discourse::SYSTEM_USER_ID,
topic_id: topic[:topic_id],
raw: raw,
created_at: post["created"],
}
if parent = topic_lookup_from_imported_post_id(post["parentid"])
p[:reply_to_post_number] = parent[:post_number]
end
p
end
end
end
def import_likes
puts "", "importing likes..."
likes = mysql_query(<<-SQL
SELECT postid, userid
FROM #{TABLE_PREFIX}uservotes u
WHERE u.vote=1
SQL
).to_a
likes.each do |like|
post = Post.find_by(id: post_id_from_imported_post_id("thread-#{like['postid']}"))
user = User.find_by(id: user_id_from_imported_user_id(like["userid"]))
begin
PostActionCreator.like(user, post) if user && post
rescue => e
puts "error acting on post #{e}"
end
end
end
def post_process_posts
puts "", "Postprocessing posts..."
current = 0
max = Post.count
Post.find_each do |post|
begin
new_raw = postprocess_post_raw(post.raw)
if new_raw != post.raw
post.raw = new_raw
post.save
end
rescue PrettyText::JavaScriptError
nil
ensure
print_status(current += 1, max)
end
end
end
def preprocess_post_raw(raw)
return "" if raw.blank?
# decode HTML entities
raw = @htmlentities.decode(raw)
raw = ActionView::Base.full_sanitizer.sanitize raw
# fix whitespaces
raw.gsub!(/(\\r)?\\n/, "\n")
raw.gsub!("\\t", "\t")
raw.gsub!('<br />', "\n")
# [HTML]...[/HTML]
raw.gsub!(/\[html\]/i, "\n```html\n")
raw.gsub!(/\[\/html\]/i, "\n```\n")
# [PHP]...[/PHP]
raw.gsub!(/\[php\]/i, "\n```php\n")
raw.gsub!(/\[\/php\]/i, "\n```\n")
# [HIGHLIGHT="..."]
raw.gsub!(/\[highlight="?(\w+)"?\]/i) { "\n```#{$1.downcase}\n" }
# [CODE]...[/CODE]
# [HIGHLIGHT]...[/HIGHLIGHT]
raw.gsub!(/\[\/?code\]/i, "\n```\n")
raw.gsub!(/\[\/?highlight\]/i, "\n```\n")
# [SAMP]...[/SAMP]
raw.gsub!(/\[\/?samp\]/i, "`")
# replace all chevrons with HTML entities
# NOTE: must be done
# - AFTER all the "code" processing
# - BEFORE the "quote" processing
raw.gsub!(/`([^`]+)`/im) { "`" + $1.gsub("<", "\u2603") + "`" }
raw.gsub!("<", "&lt;")
raw.gsub!("\u2603", "<")
raw.gsub!(/`([^`]+)`/im) { "`" + $1.gsub(">", "\u2603") + "`" }
raw.gsub!(">", "&gt;")
raw.gsub!("\u2603", ">")
# [URL=...]...[/URL]
raw.gsub!(/\[url="?([^"]+?)"?\](.*?)\[\/url\]/im) { "[#{$2.strip}](#{$1})" }
raw.gsub!(/\[url="?(.+?)"?\](.+)\[\/url\]/im) { "[#{$2.strip}](#{$1})" }
# [URL]...[/URL]
# [MP3]...[/MP3]
raw.gsub!(/\[\/?url\]/i, "")
raw.gsub!(/\[\/?mp3\]/i, "")
# [MENTION]<username>[/MENTION]
raw.gsub!(/\[mention\](.+?)\[\/mention\]/i) do
old_username = $1
if @old_username_to_new_usernames.has_key?(old_username)
old_username = @old_username_to_new_usernames[old_username]
end
"@#{old_username}"
end
# [FONT=blah] and [COLOR=blah]
raw.gsub!(/\[FONT=.*?\](.*?)\[\/FONT\]/im, '\1')
raw.gsub!(/\[COLOR=.*?\](.*?)\[\/COLOR\]/im, '\1')
raw.gsub!(/\[COLOR=#.*?\](.*?)\[\/COLOR\]/im, '\1')
raw.gsub!(/\[SIZE=.*?\](.*?)\[\/SIZE\]/im, '\1')
raw.gsub!(/\[h=.*?\](.*?)\[\/h\]/im, '\1')
# [CENTER]...[/CENTER]
raw.gsub!(/\[CENTER\](.*?)\[\/CENTER\]/im, '\1')
# [INDENT]...[/INDENT]
raw.gsub!(/\[INDENT\](.*?)\[\/INDENT\]/im, '\1')
raw.gsub!(/\[TABLE\](.*?)\[\/TABLE\]/im, '\1')
raw.gsub!(/\[TR\](.*?)\[\/TR\]/im, '\1')
raw.gsub!(/\[TD\](.*?)\[\/TD\]/im, '\1')
raw.gsub!(/\[TD="?.*?"?\](.*?)\[\/TD\]/im, '\1')
# [QUOTE]...[/QUOTE]
raw.gsub!(/\[quote\](.+?)\[\/quote\]/im) { |quote|
quote.gsub!(/\[quote\](.+?)\[\/quote\]/im) { "\n#{$1}\n" }
quote.gsub!(/\n(.+?)/) { "\n> #{$1}" }
}
# [QUOTE=<username>]...[/QUOTE]
raw.gsub!(/\[quote=([^;\]]+)\](.+?)\[\/quote\]/im) do
old_username, quote = $1, $2
if @old_username_to_new_usernames.has_key?(old_username)
old_username = @old_username_to_new_usernames[old_username]
end
"\n[quote=\"#{old_username}\"]\n#{quote}\n[/quote]\n"
end
# [YOUTUBE]<id>[/YOUTUBE]
raw.gsub!(/\[youtube\](.+?)\[\/youtube\]/i) { "\n//youtu.be/#{$1}\n" }
# [VIDEO=youtube;<id>]...[/VIDEO]
raw.gsub!(/\[video=youtube;([^\]]+)\].*?\[\/video\]/i) { "\n//youtu.be/#{$1}\n" }
# More Additions ....
# [spoiler=Some hidden stuff]SPOILER HERE!![/spoiler]
raw.gsub!(/\[spoiler="?(.+?)"?\](.+?)\[\/spoiler\]/im) { "\n#{$1}\n[spoiler]#{$2}[/spoiler]\n" }
# [IMG][IMG]http://i63.tinypic.com/akga3r.jpg[/IMG][/IMG]
raw.gsub!(/\[IMG\]\[IMG\](.+?)\[\/IMG\]\[\/IMG\]/i) { "[IMG]#{$1}[/IMG]" }
# convert list tags to ul and list=1 tags to ol
# (basically, we're only missing list=a here...)
# (https://meta.discourse.org/t/phpbb-3-importer-old/17397)
raw.gsub!(/\[list\](.*?)\[\/list\]/im, '[ul]\1[/ul]')
raw.gsub!(/\[list=1\](.*?)\[\/list\]/im, '[ol]\1[/ol]')
raw.gsub!(/\[list\](.*?)\[\/list:u\]/im, '[ul]\1[/ul]')
raw.gsub!(/\[list=1\](.*?)\[\/list:o\]/im, '[ol]\1[/ol]')
# convert *-tags to li-tags so bbcode-to-md can do its magic on phpBB's lists:
raw.gsub!(/\[\*\]\n/, '')
raw.gsub!(/\[\*\](.*?)\[\/\*:m\]/, '[li]\1[/li]')
raw.gsub!(/\[\*\](.*?)\n/, '[li]\1[/li]')
raw.gsub!(/\[\*=1\]/, '')
raw.strip!
raw
end
def postprocess_post_raw(raw)
# [QUOTE=<username>;<post_id>]...[/QUOTE]
raw.gsub!(/\[quote=([^;]+);(\d+)\](.+?)\[\/quote\]/im) do
old_username, post_id, quote = $1, $2, $3
if @old_username_to_new_usernames.has_key?(old_username)
old_username = @old_username_to_new_usernames[old_username]
end
if topic_lookup = topic_lookup_from_imported_post_id(post_id)
post_number = topic_lookup[:post_number]
topic_id = topic_lookup[:topic_id]
"\n[quote=\"#{old_username},post:#{post_number},topic:#{topic_id}\"]\n#{quote}\n[/quote]\n"
else
"\n[quote=\"#{old_username}\"]\n#{quote}\n[/quote]\n"
end
end
# remove attachments
raw.gsub!(/\[attach[^\]]*\]\d+\[\/attach\]/i, "")
# [THREAD]<thread_id>[/THREAD]
# ==> http://my.discourse.org/t/slug/<topic_id>
raw.gsub!(/\[thread\](\d+)\[\/thread\]/i) do
thread_id = $1
if topic_lookup = topic_lookup_from_imported_post_id("thread-#{thread_id}")
topic_lookup[:url]
else
$&
end
end
# [THREAD=<thread_id>]...[/THREAD]
# ==> [...](http://my.discourse.org/t/slug/<topic_id>)
raw.gsub!(/\[thread=(\d+)\](.+?)\[\/thread\]/i) do
thread_id, link = $1, $2
if topic_lookup = topic_lookup_from_imported_post_id("thread-#{thread_id}")
url = topic_lookup[:url]
"[#{link}](#{url})"
else
$&
end
end
# [POST]<post_id>[/POST]
# ==> http://my.discourse.org/t/slug/<topic_id>/<post_number>
raw.gsub!(/\[post\](\d+)\[\/post\]/i) do
post_id = $1
if topic_lookup = topic_lookup_from_imported_post_id(post_id)
topic_lookup[:url]
else
$&
end
end
# [POST=<post_id>]...[/POST]
# ==> [...](http://my.discourse.org/t/<topic_slug>/<topic_id>/<post_number>)
raw.gsub!(/\[post=(\d+)\](.+?)\[\/post\]/i) do
post_id, link = $1, $2
if topic_lookup = topic_lookup_from_imported_post_id(post_id)
url = topic_lookup[:url]
"[#{link}](#{url})"
else
$&
end
end
raw
end
def create_permalinks
puts '', 'Creating Permalink File...', ''
#creates permalinks for q2a category links
Category.find_each do |category|
ccf = category.custom_fields
if ccf && ccf["import_id"]
url = category.parent_category ? "#{category.parent_category.slug}/#{category.slug}" : category.slug
Permalink.create(url: url, category_id: category.id) rescue nil
end
end
end
def parse_timestamp(timestamp)
Time.zone.at(@tz.utc_to_local(timestamp))
end
def mysql_query(sql)
@client.query(sql, cache_rows: true)
end
end
ImportScripts::Question2Answer.new.perform