discourse/script/import_scripts/flarum_import.rb

169 lines
4.4 KiB
Ruby

# frozen_string_literal: true
require "mysql2"
require "time"
require "date"
require File.expand_path(File.dirname(__FILE__) + "/base.rb")
class ImportScripts::FLARUM < ImportScripts::Base
#SET THE APPROPRIATE VALUES FOR YOUR MYSQL CONNECTION
FLARUM_HOST ||= ENV["FLARUM_HOST"] || "db_host"
FLARUM_DB ||= ENV["FLARUM_DB"] || "db_name"
BATCH_SIZE ||= 1000
FLARUM_USER ||= ENV["FLARUM_USER"] || "db_user"
FLARUM_PW ||= ENV["FLARUM_PW"] || "db_user_pass"
def initialize
super
@client =
Mysql2::Client.new(
host: FLARUM_HOST,
username: FLARUM_USER,
password: FLARUM_PW,
database: FLARUM_DB,
)
end
def execute
import_users
import_categories
import_posts
end
def import_users
puts "", "creating users"
total_count = mysql_query("SELECT count(*) count FROM users;").first["count"]
batches(BATCH_SIZE) do |offset|
results =
mysql_query(
"SELECT id, username, email, joined_at, last_seen_at
FROM users
LIMIT #{BATCH_SIZE}
OFFSET #{offset};",
)
break if results.size < 1
next if all_records_exist? :users, results.map { |u| u["id"].to_i }
create_users(results, total: total_count, offset: offset) do |user|
{
id: user["id"],
email: user["email"],
username: user["username"],
name: user["username"],
created_at: user["joined_at"],
last_seen_at: user["last_seen_at"],
}
end
end
end
def import_categories
puts "", "importing top level categories..."
categories =
mysql_query(
"
SELECT id, name, description, position
FROM tags
ORDER BY position ASC
",
).to_a
create_categories(categories) { |category| { id: category["id"], name: category["name"] } }
puts "", "importing children categories..."
children_categories =
mysql_query(
"
SELECT id, name, description, position
FROM tags
ORDER BY position
",
).to_a
create_categories(children_categories) do |category|
{
id: "child##{category["id"]}",
name: category["name"],
description: category["description"],
}
end
end
def import_posts
puts "", "creating topics and posts"
total_count = mysql_query("SELECT count(*) count from posts").first["count"]
batches(BATCH_SIZE) do |offset|
results =
mysql_query(
"
SELECT p.id id,
d.id topic_id,
d.title title,
d.first_post_id first_post_id,
p.user_id user_id,
p.content raw,
p.created_at created_at,
t.tag_id category_id
FROM posts p,
discussions d,
discussion_tag t
WHERE p.discussion_id = d.id
AND t.discussion_id = d.id
ORDER BY p.created_at
LIMIT #{BATCH_SIZE}
OFFSET #{offset};
",
).to_a
break if results.size < 1
next if all_records_exist? :posts, results.map { |m| m["id"].to_i }
create_posts(results, total: total_count, offset: offset) do |m|
skip = false
mapped = {}
mapped[:id] = m["id"]
mapped[:user_id] = user_id_from_imported_user_id(m["user_id"]) || -1
mapped[:raw] = process_FLARUM_post(m["raw"], m["id"])
mapped[:created_at] = Time.zone.at(m["created_at"])
if m["id"] == m["first_post_id"]
mapped[:category] = category_id_from_imported_category_id("child##{m["category_id"]}")
mapped[:title] = CGI.unescapeHTML(m["title"])
else
parent = topic_lookup_from_imported_post_id(m["first_post_id"])
if parent
mapped[:topic_id] = parent[:topic_id]
else
puts "Parent post #{m["first_post_id"]} doesn't exist. Skipping #{m["id"]}: #{m["title"][0..40]}"
skip = true
end
end
skip ? nil : mapped
end
end
end
def process_FLARUM_post(raw, import_id)
s = raw.dup
s
end
def mysql_query(sql)
@client.query(sql, cache_rows: false)
end
end
ImportScripts::FLARUM.new.perform