discourse/script/import_scripts/zendesk_api.rb

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# Zendesk importer
#
# This one uses their API.
require 'reverse_markdown'
require_relative 'base'
require_relative 'base/generic_database'
# Call it like this:
# RAILS_ENV=production bundle exec ruby script/import_scripts/zendesk_api.rb SOURCE_URL DIRNAME AUTH_EMAIL AUTH_TOKEN
class ImportScripts::ZendeskApi < ImportScripts::Base
BATCH_SIZE = 1000
def initialize(source_url, path, auth_email, auth_token)
super()
@source_url = source_url
@path = path
@auth_email = auth_email
@auth_token = auth_token
@db = ImportScripts::GenericDatabase.new(@path, batch_size: BATCH_SIZE, recreate: true)
end
def execute
fetch_from_api
import_categories
import_users
import_topics
import_posts
end
def fetch_from_api
puts '', 'fetching categories...'
get_from_api('/api/v2/community/topics.json', 'topics') do |row|
@db.insert_category(
id: row['id'],
name: row['name'],
description: row['description'],
position: row['position'],
url: row['html_url']
)
end
puts '', 'fetching topics...'
get_from_api('/api/v2/community/posts.json', 'posts') do |row|
@db.insert_topic(
id: row['id'],
title: row['title'],
raw: row['details'],
category_id: row['topic_id'],
closed: row['closed'],
user_id: row['author_id'],
created_at: row['created_at'],
url: row['html_url']
)
end
puts '', 'fetching posts...'
total_count = @db.count_topics
start_time = Time.now
last_id = ''
batches do |offset|
rows, last_id = @db.fetch_topics(last_id)
break if rows.empty?
print_status(offset, total_count, start_time)
rows.each do |topic_row|
get_from_api("/api/v2/community/posts/#{topic_row['id']}/comments.json", 'comments', show_status: false) do |row|
@db.insert_post(
id: row['id'],
raw: row['body'],
topic_id: topic_row['id'],
user_id: row['author_id'],
created_at: row['created_at'],
url: row['html_url']
)
end
end
end
puts '', 'fetching users...'
results = @db.execute_sql("SELECT user_id FROM topic")
user_ids = results.map { |h| h['user_id']&.to_i }
results = @db.execute_sql("SELECT user_id FROM post")
user_ids += results.map { |h| h['user_id']&.to_i }
user_ids.uniq!
user_ids.sort!
total_users = user_ids.size
start_time = Time.now
while !user_ids.empty?
print_status(total_users - user_ids.size, total_users, start_time)
get_from_api("/api/v2/users/show_many.json?ids=#{user_ids.shift(50).join(',')}", 'users', show_status: false) do |row|
@db.insert_user(
id: row['id'],
email: row['email'],
name: row['name'],
created_at: row['created_at'],
last_seen_at: row['last_login_at'],
active: row['active']
)
end
end
@db.sort_posts_by_created_at
end
def import_categories
puts "", "creating categories"
rows = @db.fetch_categories
create_categories(rows) do |row|
{
id: row['id'],
name: row['name'],
description: row['description'],
position: row['position'],
post_create_action: proc do |category|
url = remove_domain(row['url'])
Permalink.create(url: url, category_id: category.id) unless permalink_exists?(url)
end
}
end
end
def import_users
puts "", "creating users"
total_count = @db.count_users
last_id = ''
batches do |offset|
rows, last_id = @db.fetch_users(last_id)
break if rows.empty?
next if all_records_exist?(:users, rows.map { |row| row['id'] })
create_users(rows, total: total_count, offset: offset) do |row|
{
id: row['id'],
email: row['email'],
name: row['name'],
created_at: row['created_at'],
last_seen_at: row['last_seen_at'],
active: row['active'] == 1
}
end
end
end
def import_topics
puts "", "creating topics"
total_count = @db.count_topics
last_id = ''
batches do |offset|
rows, last_id = @db.fetch_topics(last_id)
break if rows.empty?
next if all_records_exist?(:posts, rows.map { |row| import_topic_id(row['id']) })
create_posts(rows, total: total_count, offset: offset) do |row|
{
id: import_topic_id(row['id']),
title: row['title'].present? ? row['title'].strip[0...255] : "Topic title missing",
raw: normalize_raw(row['raw']),
category: category_id_from_imported_category_id(row['category_id']),
user_id: user_id_from_imported_user_id(row['user_id']) || Discourse.system_user.id,
created_at: row['created_at'],
closed: row['closed'] == 1,
post_create_action: proc do |post|
url = remove_domain(row['url'])
Permalink.create(url: url, topic_id: post.topic.id) unless permalink_exists?(url)
end
}
end
end
end
def import_topic_id(topic_id)
"T#{topic_id}"
end
def import_posts
puts "", "creating posts"
total_count = @db.count_posts
last_row_id = 0
batches do |offset|
rows, last_row_id = @db.fetch_sorted_posts(last_row_id)
break if rows.empty?
create_posts(rows, total: total_count, offset: offset) do |row|
topic = topic_lookup_from_imported_post_id(import_topic_id(row['topic_id']))
if topic.nil?
p "MISSING TOPIC #{row['topic_id']}"
p row
next
end
{
id: row['id'],
raw: normalize_raw(row['raw']),
user_id: user_id_from_imported_user_id(row['user_id']) || Discourse.system_user.id,
topic_id: topic[:topic_id],
created_at: row['created_at'],
post_create_action: proc do |post|
url = remove_domain(row['url'])
Permalink.create(url: url, post_id: post.id) unless permalink_exists?(url)
end
}
end
end
end
def normalize_raw(raw)
raw = raw.gsub('\n', '')
raw = ReverseMarkdown.convert(raw)
raw
end
def remove_domain(url)
url.sub(@source_url, "")
end
def permalink_exists?(url)
Permalink.find_by(url: url)
end
def connection
@_connection ||= begin
connect_uri = URI.parse(@source_url)
http = Net::HTTP.new(connect_uri.host, connect_uri.port)
http.open_timeout = 30
http.read_timeout = 30
http.use_ssl = connect_uri.scheme == "https"
http
end
end
def authorization
@_authorization ||= begin
auth_str = "#{@auth_email}/token:#{@auth_token}"
"Basic #{Base64.strict_encode64(auth_str)}"
end
end
def get_from_api(path, array_name, show_status: true)
url = "#{@source_url}#{path}"
start_time = Time.now
while url
get = Net::HTTP::Get.new(url)
get['User-Agent'] = 'Discourse Zendesk Importer'
get['Authorization'] = authorization
retry_count = 0
begin
while retry_count < 5
begin
response = connection.request(get)
puts("Retry successful!") if retry_count > 0
break
rescue => e
puts "Request failed #{url}. Waiting and will retry. #{e.class.name} #{e.message}"
sleep(20)
retry_count += 1
end
end
end
json = JSON.parse(response.body)
json[array_name].each do |row|
yield row
end
url = json['next_page']
if show_status
if json['page'] && json['page_count']
print_status(json['page'], json['page_count'], start_time)
else
print '.'
end
end
end
end
end
unless ARGV.length == 4 && Dir.exist?(ARGV[1])
puts "", "Usage:", "", "bundle exec ruby script/import_scripts/zendesk_api.rb SOURCE_URL DIRNAME AUTH_EMAIL AUTH_TOKEN", ""
exit 1
end
ImportScripts::ZendeskApi.new(ARGV[0], ARGV[1], ARGV[2], ARGV[3]).perform