66 lines
2.0 KiB
Ruby
66 lines
2.0 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require "open-uri"
|
|
require "nokogiri"
|
|
require "excon"
|
|
|
|
module Jobs
|
|
class CrawlTopicLink < ::Jobs::Base
|
|
sidekiq_options queue: "low"
|
|
|
|
def execute(args)
|
|
raise Discourse::InvalidParameters.new(:topic_link_id) unless args[:topic_link_id].present?
|
|
|
|
topic_link = TopicLink.find_by(id: args[:topic_link_id], internal: false, crawled_at: nil)
|
|
return if topic_link.blank?
|
|
|
|
# Look for a topic embed for the URL. If it exists, use its title and don't crawl
|
|
topic_embed =
|
|
TopicEmbed.where(embed_url: topic_link.url).includes(:topic).references(:topic).first
|
|
# topic could be deleted, so skip
|
|
if topic_embed && topic_embed.topic
|
|
TopicLink.where(id: topic_link.id).update_all(
|
|
["title = ?, crawled_at = CURRENT_TIMESTAMP", topic_embed.topic.title[0..255]],
|
|
)
|
|
return
|
|
end
|
|
|
|
begin
|
|
crawled = false
|
|
|
|
# Special case: Images
|
|
# If the link is to an image, put the filename as the title
|
|
if FileHelper.is_supported_image?(topic_link.url)
|
|
uri = URI(topic_link.url)
|
|
filename = File.basename(uri.path)
|
|
crawled =
|
|
(
|
|
TopicLink.where(id: topic_link.id).update_all(
|
|
["title = ?, crawled_at = CURRENT_TIMESTAMP", filename],
|
|
) == 1
|
|
)
|
|
end
|
|
|
|
unless crawled
|
|
# Fetch the beginning of the document to find the title
|
|
title = RetrieveTitle.crawl(topic_link.url)
|
|
if title.present?
|
|
crawled =
|
|
(
|
|
TopicLink.where(id: topic_link.id).update_all(
|
|
["title = ?, crawled_at = CURRENT_TIMESTAMP", title[0..254]],
|
|
) == 1
|
|
)
|
|
end
|
|
end
|
|
rescue Exception
|
|
# If there was a connection error, do nothing
|
|
ensure
|
|
if !crawled && topic_link.present?
|
|
TopicLink.where(id: topic_link.id).update_all("crawled_at = CURRENT_TIMESTAMP")
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|