Class: Jobs::CrawlTopicLink
- Defined in:
- app/jobs/regular/crawl_topic_link.rb
Instance Method Summary collapse
Methods inherited from Base
acquire_cluster_concurrency_lock!, clear_cluster_concurrency_lock!, cluster_concurrency, cluster_concurrency_redis_key, delayed_perform, #error_context, get_cluster_concurrency, #last_db_duration, #log, #perform, #perform_immediately
Instance Method Details
#execute(args) ⇒ Object
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# File 'app/jobs/regular/crawl_topic_link.rb', line 11 def execute(args) raise Discourse::InvalidParameters.new(:topic_link_id) if args[:topic_link_id].blank? 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 = TopicEmbed.where(embed_url: topic_link.url).includes(:topic).references(:topic).first # topic could be deleted, so skip if && .topic TopicLink.where(id: topic_link.id).update_all( ["title = ?, crawled_at = CURRENT_TIMESTAMP", .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 |