discourse/script/bulk_import/discourse_merger.rb

642 lines
21 KiB
Ruby

require_relative "base"
class BulkImport::DiscourseMerger < BulkImport::Base
NOW ||= "now()".freeze
CUSTOM_FIELDS = ['category', 'group', 'post', 'topic', 'user']
# DB_NAME: name of database being merged into the current local db
# DB_HOST: hostname of database being merged
# UPLOADS_PATH: absolute path of the directory containing "original"
# and "optimized" dirs. e.g. /home/discourse/other-site/public/uploads/default
# SOURCE_BASE_URL: base url of the site being merged. e.g. https://meta.discourse.org
# SOURCE_CDN: (optional) base url of the CDN of the site being merged.
# e.g. https://discourse-cdn-sjc1.com/business4
def initialize
local_db = ActiveRecord::Base.connection_config
@raw_connection = PG.connect(dbname: local_db[:database], host: 'localhost', port: local_db[:port])
@source_db_config = {
dbname: ENV["DB_NAME"] || 'dd_demo',
host: ENV["DB_HOST"] || 'localhost'
}
raise "SOURCE_BASE_URL missing!" unless ENV['SOURCE_BASE_URL']
@source_base_url = ENV["SOURCE_BASE_URL"]
@uploads_path = ENV['UPLOADS_PATH']
@uploader = ImportScripts::Uploader.new
if ENV['SOURCE_CDN']
@source_cdn = ENV['SOURCE_CDN']
end
local_version = @raw_connection.exec("select max(version) from schema_migrations")
local_version = local_version.first['max']
source_version = source_raw_connection.exec("select max(version) from schema_migrations")
source_version = source_version.first['max']
if local_version != source_version
raise "DB schema mismatch. Databases must be at the same migration version. Local is #{local_version}, other is #{source_version}"
end
@encoder = PG::TextEncoder::CopyRow.new
@merged_user_ids = []
@tags = {}
@tag_groups = {}
@uploads = {}
@post_actions = {}
@notifications = {}
@badge_groupings = {}
@badges = {}
@auto_group_ids = Group::AUTO_GROUPS.values
# add your authorized extensions here:
SiteSetting.authorized_extensions = ['jpg', 'jpeg', 'png', 'gif'].join('|')
@sequences = {}
end
def start
run
ensure
@raw_connection&.close
source_raw_connection&.close
end
def execute
copy_users
copy_user_stuff
copy_groups
copy_categories
copy_topics
copy_posts
copy_tags
copy_uploads if @uploads_path
copy_everything_else
copy_badges
fix_category_descriptions
end
def source_raw_connection
@source_raw_connection ||= PG.connect(@source_db_config)
end
def copy_users
puts '', "merging users..."
imported_ids = []
usernames_lower = User.unscoped.pluck(:username_lower).to_set
columns = User.columns.map(&:name)
sql = "COPY users (#{columns.map { |c| "\"#{c}\"" }.join(",")}) FROM STDIN"
@raw_connection.copy_data(sql, @encoder) do
source_raw_connection.exec("SELECT #{columns.map { |c| "u.\"#{c}\"" }.join(",")}, e.email FROM users u INNER JOIN user_emails e ON (u.id = e.user_id AND e.primary = TRUE) WHERE u.id > 0").each do |row|
old_user_id = row['id']&.to_i
if existing = UserEmail.where(email: row.delete('email')).first&.user
# Merge these users
@users[old_user_id.to_s] = existing.id
@merged_user_ids << old_user_id
next
else
# New user
unless usernames_lower.add?(row['username_lower'])
username = row['username'] + "_1"
username.next! until usernames_lower.add?(username.downcase)
row['username'] = username
row['username_lower'] = row['username'].downcase
end
row['id'] = (@last_user_id += 1)
@users[old_user_id.to_s] = row['id']
@raw_connection.put_copy_data row.values
end
imported_ids << old_user_id
end
end
@sequences[User.sequence_name] = @last_user_id + 1 if @last_user_id
create_custom_fields('user', 'id', imported_ids) do |old_user_id|
{ value: old_user_id, record_id: user_id_from_imported_id(old_user_id) }
end
end
def copy_user_stuff
[
UserEmail, EmailToken, UserStat, UserOption, UserProfile, EmailChangeRequest,
UserVisit, UserSearchData, GivenDailyLike, UserSecondFactor, UserOpenId
].each do |c|
copy_model(c, skip_if_merged: true, is_a_user_model: true, skip_processing: true)
end
[FacebookUserInfo, GithubUserInfo, GoogleUserInfo, InstagramUserInfo, Oauth2UserInfo,
SingleSignOnRecord, TwitterUserInfo
].each do |c|
copy_model(c, skip_if_merged: true, is_a_user_model: true)
end
end
def copy_groups
copy_model(Group,
mapping: @groups,
skip_processing: true,
select_sql: "SELECT #{Group.columns.map { |c| "\"#{c.name}\"" }.join(', ')} FROM groups WHERE automatic = false"
)
copy_model(GroupUser, skip_if_merged: true)
copy_model(GroupArchivedMessage)
copy_model(GroupMention, skip_processing: true)
[CategoryGroup, GroupHistory].each do |k|
col_list = k.columns.map { |c| "\"#{c.name}\"" }.join(', ')
copy_model(k,
select_sql: "SELECT #{col_list} FROM #{k.table_name} WHERE group_id NOT IN (#{@auto_group_ids.join(', ')})"
)
end
end
def copy_categories
puts "merging categories..."
columns = Category.columns.map(&:name)
imported_ids = []
last_id = Category.unscoped.maximum(:id)
sql = "COPY categories (#{columns.map { |c| "\"#{c}\"" }.join(', ')}) FROM STDIN"
@raw_connection.copy_data(sql, @encoder) do
source_raw_connection.exec("SELECT #{columns.map { |c| "\"#{c}\"" }.join(', ')} FROM categories").each do |row|
if existing = Category.where(name: row['name']).first
@categories[row['id']] = existing.id
next
end
old_user_id = row['user_id'].to_i
if old_user_id >= 1
row['user_id'] = user_id_from_imported_id(old_user_id) || -1
end
if row['parent_category_id']
row['parent_category_id'] = category_id_from_imported_id(row['parent_category_id'])
end
old_id = row['id']
row['id'] = (last_id += 1)
imported_ids << old_id
@categories[old_id.to_s] = row['id']
@raw_connection.put_copy_data(row.values)
end
end
@sequences[Category.sequence_name] = last_id + 1
create_custom_fields('category', 'id', imported_ids) do |imported_id|
{
record_id: category_id_from_imported_id(imported_id),
value: imported_id,
}
end
end
def fix_category_descriptions
puts 'updating category description topic ids...'
@categories.each do |old_id, new_id|
category = Category.find(new_id)
if description_topic_id = topic_id_from_imported_id(category.topic_id)
category.topic_id = description_topic_id
category.save!
end
end
end
def copy_topics
copy_model(Topic, mapping: @topics)
[TopicAllowedGroup, TopicAllowedUser, TopicEmbed, TopicSearchData,
TopicTimer, TopicUser, TopicViewItem
].each do |k|
copy_model(k, skip_processing: true)
end
end
def copy_posts
copy_model(Post, skip_processing: true, mapping: @posts)
copy_model(PostAction, mapping: @post_actions)
[PostReply, TopicLink, UserAction, QuotedPost].each do |k|
copy_model(k)
end
[PostStat, IncomingEmail, PostDetail, PostRevision].each do |k|
copy_model(k, skip_processing: true)
end
end
def copy_tags
puts "merging tags..."
columns = Tag.columns.map(&:name)
imported_ids = []
last_id = Tag.unscoped.maximum(:id)
sql = "COPY tags (#{columns.map { |c| "\"#{c}\"" }.join(', ')}) FROM STDIN"
@raw_connection.copy_data(sql, @encoder) do
source_raw_connection.exec("SELECT #{columns.map { |c| "\"#{c}\"" }.join(', ')} FROM tags").each do |row|
if existing = Tag.where(name: row['name']).first
@tags[row['id']] = existing.id
next
end
old_id = row['id']
row['id'] = (last_id += 1)
@tags[old_id.to_s] = row['id']
@raw_connection.put_copy_data(row.values)
end
end
@sequences[Tag.sequence_name] = last_id + 1
[TagUser, TopicTag, CategoryTag, CategoryTagStat].each do |k|
copy_model(k, skip_processing: true)
end
copy_model(TagGroup, mapping: @tag_groups)
[TagGroupMembership, CategoryTagGroup].each do |k|
copy_model(k, skip_processing: true)
end
col_list = TagGroupPermission.columns.map { |c| "\"#{c.name}\"" }.join(', ')
copy_model(TagGroupPermission,
skip_processing: true,
select_sql: "SELECT #{col_list} FROM tag_group_permissions WHERE group_id NOT IN (#{@auto_group_ids.join(', ')})"
)
end
def copy_uploads
puts ''
print "copying uploads..."
source_raw_connection.exec("SELECT * FROM uploads").each do |row|
user_id = row['user_id'].to_i
user_id = user_id_from_imported_id(user_id) if user_id > 0
absolute_filename = File.join(@uploads_path, row['url'].gsub(/^\/uploads\/[^\/]+\//, ''))
print '.'
next unless File.exists?(absolute_filename)
upload = create_upload(user_id, absolute_filename, File.basename(absolute_filename))
if upload&.persisted?
@uploads[row['id']] = upload.id
if @source_cdn
DbHelper.remap(UrlHelper.absolute(row['url'], @source_cdn), upload.url)
end
DbHelper.remap(UrlHelper.absolute(row['url'], @source_base_url), upload.url)
DbHelper.remap(row['url'], upload.url)
else
puts "Error: Upload did not persist for #{absolute_filename}! #{upload&.errors&.full_messages}"
end
end
puts ''
copy_model(PostUpload)
copy_model(UserAvatar)
end
def copy_everything_else
[PostTiming, UserArchivedMessage, UnsubscribeKey].each do |k|
copy_model(k, skip_processing: true)
end
[UserHistory, UserWarning].each do |k|
copy_model(k)
end
copy_model(Notification, mapping: @notifications)
end
def copy_badges
copy_model(BadgeGrouping, mapping: @badge_groupings, skip_processing: true)
puts "merging badges..."
columns = Badge.columns.map(&:name)
imported_ids = []
last_id = Badge.unscoped.maximum(:id)
sql = "COPY badges (#{columns.map { |c| "\"#{c}\"" }.join(', ')}) FROM STDIN"
@raw_connection.copy_data(sql, @encoder) do
source_raw_connection.exec("SELECT #{columns.map { |c| "\"#{c}\"" }.join(', ')} FROM badges").each do |row|
if existing = Badge.where(name: row['name']).first
@badges[row['id']] = existing.id
next
end
old_id = row['id']
row['id'] = (last_id += 1)
@badges[old_id.to_s] = row['id']
row['badge_grouping_id'] = @badge_groupings[row['badge_grouping_id']] if row['badge_grouping_id']
@raw_connection.put_copy_data(row.values)
end
end
@sequences[Badge.sequence_name] = last_id + 1
copy_model(UserBadge, is_a_user_model: true)
end
def copy_model(klass, skip_if_merged: false, is_a_user_model: false, skip_processing: false, mapping: nil, select_sql: nil)
puts "copying #{klass.table_name}..."
columns = klass.columns.map(&:name)
has_custom_fields = CUSTOM_FIELDS.include?(klass.name.downcase)
imported_ids = []
last_id = columns.include?('id') ? (klass.unscoped.maximum(:id) || 1) : nil
sql = "COPY #{klass.table_name} (#{columns.map { |c| "\"#{c}\"" }.join(', ')}) FROM STDIN"
@raw_connection.copy_data(sql, @encoder) do
source_raw_connection.exec(select_sql || "SELECT #{columns.map { |c| "\"#{c}\"" }.join(', ')} FROM #{klass.table_name}").each do |row|
if row['user_id']
old_user_id = row['user_id'].to_i
next if skip_if_merged && @merged_user_ids.include?(old_user_id)
if is_a_user_model
next if old_user_id < 1
next if user_id_from_imported_id(old_user_id).nil?
end
if old_user_id >= 1
row['user_id'] = user_id_from_imported_id(old_user_id)
if is_a_user_model && row['user_id'].nil?
raise "user_id nil for user id '#{old_user_id}'"
end
next if row['user_id'].nil? # associated record for a deleted user
end
end
row['group_id'] = group_id_from_imported_id(row['group_id']) if row['group_id']
row['category_id'] = category_id_from_imported_id(row['category_id']) if row['category_id']
if row['topic_id'] && klass != Category
row['topic_id'] = topic_id_from_imported_id(row['topic_id'])
next if row['topic_id'].nil?
end
if row['post_id']
row['post_id'] = post_id_from_imported_id(row['post_id'])
next if row['post_id'].nil?
end
row['tag_id'] = tag_id_from_imported_id(row['tag_id']) if row['tag_id']
row['tag_group_id'] = tag_group_id_from_imported_id(row['tag_group_id']) if row['tag_group_id']
row['upload_id'] = upload_id_from_imported_id(row['upload_id']) if row['upload_id']
row['deleted_by_id'] = user_id_from_imported_id(row['deleted_by_id']) if row['deleted_by_id']
row['badge_id'] = badge_id_from_imported_id(row['badge_id']) if row['badge_id']
old_id = row['id']
if old_id && last_id
row['id'] = (last_id += 1)
imported_ids << old_id if has_custom_fields
mapping[old_id.to_s] = row['id'] if mapping
end
if skip_processing
@raw_connection.put_copy_data(row.values)
else
process_method_name = "process_#{klass.name.underscore}"
processed = respond_to?(process_method_name) ? send(process_method_name, HashWithIndifferentAccess.new(row)) : row
if processed
@raw_connection.put_copy_data columns.map { |c| processed[c] }
end
end
end
end
@sequences[klass.sequence_name] = last_id + 1 if last_id
if has_custom_fields
id_mapping_method_name = "#{klass.name.downcase}_id_from_imported_id".freeze
return unless respond_to?(id_mapping_method_name)
create_custom_fields(klass.name.downcase, "id", imported_ids) do |imported_id|
{
record_id: send(id_mapping_method_name, imported_id),
value: imported_id,
}
end
end
end
def process_topic(topic)
return nil if topic['category_id'].nil? && topic['archetype'] != Archetype.private_message
topic
end
def process_post(post)
post[:last_editor_id] = user_id_from_imported_id(post[:user_id])
@topic_id_by_post_id[post[:id]] = post[:topic_id]
post
end
def process_post_reply(post_reply)
post_reply['reply_id'] = post_id_from_imported_id(post_reply['reply_id']) if post_reply['reply_id']
post_reply
end
def process_quoted_post(quoted_post)
quoted_post['quoted_post_id'] = post_id_from_imported_id(quoted_post['quoted_post_id']) if quoted_post['quoted_post_id']
return nil if quoted_post['quoted_post_id'].nil?
quoted_post
end
def process_topic_link(topic_link)
topic_link['link_topic_id'] = topic_id_from_imported_id(topic_link['link_topic_id']) if topic_link['link_topic_id']
topic_link['link_post_id'] = post_id_from_imported_id(topic_link['link_post_id']) if topic_link['link_post_id']
return nil if topic_link['link_topic_id'].nil? || topic_link['link_post_id'].nil?
topic_link
end
def process_post_action(post_action)
return nil unless post_action['post_id'].present?
post_action['related_post_id'] = post_id_from_imported_id(post_action['related_post_id'])
post_action['deferred_by_id'] = user_id_from_imported_id(post_action['deferred_by_id'])
post_action['agreed_by_id'] = user_id_from_imported_id(post_action['agreed_by_id'])
post_action['disagreed_by_id'] = user_id_from_imported_id(post_action['disagreed_by_id'])
post_action
end
def process_user_action(user_action)
user_action['target_topic_id'] = topic_id_from_imported_id(user_action['target_topic_id']) if user_action['target_topic_id']
user_action['target_post_id'] = post_id_from_imported_id(user_action['target_post_id']) if user_action['target_post_id']
user_action['target_user_id'] = user_id_from_imported_id(user_action['target_user_id']) if user_action['target_user_id']
user_action['acting_user_id'] = user_id_from_imported_id(user_action['acting_user_id']) if user_action['acting_user_id']
user_action['queued_post_id'] = post_id_from_imported_id(user_action['queued_post_id']) if user_action['queued_post_id']
user_action
end
def process_tag_group(tag_group)
tag_group['parent_tag_id'] = tag_id_from_imported_id(tag_group['parent_tag_id']) if tag_group['parent_tag_id']
tag_group
end
def process_category_group(category_group)
return nil if category_group['category_id'].nil? || category_group['group_id'].nil?
category_group
end
def process_group_user(group_user)
if @auto_group_ids.include?(group_user['group_id'].to_i) &&
@merged_user_ids.include?(group_user['user_id'].to_i)
return nil
end
return nil if group_user['user_id'].to_i < 1
group_user
end
def process_group_history(group_history)
group_history['acting_user_id'] = user_id_from_imported_id(group_history['acting_user_id']) if group_history['acting_user_id']
group_history['target_user_id'] = user_id_from_imported_id(group_history['target_user_id']) if group_history['target_user_id']
group_history
end
def process_group_archived_message(gam)
return nil unless gam['topic_id'].present? && gam['group_id'].present?
gam
end
def process_topic_link(topic_link)
topic_link['link_topic_id'] = topic_id_from_imported_id(topic_link['link_topic_id']) if topic_link['link_topic_id']
topic_link['link_post_id'] = post_id_from_imported_id(topic_link['link_post_id']) if topic_link['link_post_id']
topic_link
end
def process_user_avatar(user_avatar)
user_avatar['custom_upload_id'] = upload_id_from_imported_id(user_avatar['custom_upload_id']) if user_avatar['custom_upload_id']
user_avatar['gravatar_upload_id'] = upload_id_from_imported_id(user_avatar['gravatar_upload_id']) if user_avatar['gravatar_upload_id']
return nil unless user_avatar['custom_upload_id'].present? && user_avatar['gravatar_upload_id'].present?
user_avatar
end
def process_user_history(user_history)
user_history['acting_user_id'] = user_id_from_imported_id(user_history['acting_user_id']) if user_history['acting_user_id']
user_history['target_user_id'] = user_id_from_imported_id(user_history['target_user_id']) if user_history['target_user_id']
user_history
end
def process_user_warning(user_warning)
user_warning['created_by_id'] = user_id_from_imported_id(user_warning['created_by_id']) if user_warning['created_by_id']
user_warning
end
def process_post_upload(post_upload)
return nil unless post_upload['upload_id'].present?
# can't figure out why there are duplicates of these during merge.
# here's a hack to prevent it:
@imported_post_uploads ||= {}
return nil if @imported_post_uploads[post_upload['post_id']] == post_upload['upload_id']
@imported_post_uploads[post_upload['post_id']] = post_upload['upload_id']
post_upload
end
def process_notification(notification)
notification['post_action_id'] = post_action_id_from_imported_id(notification['post_action_id']) if notification['post_action_id']
notification
end
def process_facebook_user_info(r)
return nil if FacebookUserInfo.where(facebook_user_id: r['facebook_user_id']).exists?
r
end
def process_github_user_info(r)
return nil if GithubUserInfo.where(github_user_id: r['github_user_id']).exists?
r
end
def process_google_user_info(r)
return nil if GoogleUserInfo.where(google_user_id: r['google_user_id']).exists?
r
end
def process_instagram_user_info(r)
return nil if InstagramUserInfo.where(instagram_user_id: r['instagram_user_id']).exists?
r
end
def process_oauth2_user_info(r)
return nil if Oauth2UserInfo.where(uid: r['uid'], provider: r['provider']).exists?
r
end
def process_single_sign_on_record(r)
return nil if SingleSignOnRecord.where(external_id: r['external_id']).exists?
r
end
def process_twitter_user_info(r)
return nil if TwitterUserInfo.where(twitter_user_id: r['twitter_user_id']).exists?
r
end
def process_user_badge(user_badge)
user_badge['granted_by_id'] = user_id_from_imported_id(user_badge['granted_by_id']) if user_badge['granted_by_id']
user_badge['notification_id'] = notification_id_from_imported_id(user_badge['notification_id']) if user_badge['notification_id']
return nil if UserBadge.where(user_id: user_badge['user_id'], badge_id: user_badge['badge_id']).exists?
user_badge
end
def user_id_from_imported_id(id)
return id if id.to_i < 1
super(id)
end
def group_id_from_imported_id(id)
return id if @auto_group_ids.include?(id&.to_i)
super(id)
end
def tag_id_from_imported_id(id)
@tags[id.to_s]
end
def tag_group_id_from_imported_id(id)
@tag_groups[id.to_s]
end
def upload_id_from_imported_id(id)
@uploads[id.to_s]
end
def post_action_id_from_imported_id(id)
@post_actions[id.to_s]
end
def badge_id_from_imported_id(id)
@badges[id.to_s]
end
def notification_id_from_imported_id(id)
@notifications[id.to_s]
end
def fix_primary_keys
@sequences.each do |sequence_name, val|
sql = "SELECT setval('#{sequence_name}', #{val})"
puts sql
@raw_connection.exec(sql)
end
end
end
BulkImport::DiscourseMerger.new.start