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Module task_context

url_cleaner_engine::tutorial::job

Module task_context 

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§TaskContext

Sometimes you’ll want to give a cleaner context about an individual task. This is mainly used along with job context by URL Cleaner Site and URL Cleaner Site Userscript to provide site-specific optimizations.

For example, on twitter, links in tweets are changed to point to https://t.co/unique_id which then redirects to the original URL. However, twitter displays the original URL. URL Cleaner Site Userscript sends URL Cleaner Site a JobContext with JobContext::source_host set to x.com and, for each applicable link, a TaskConfig with a var effectively saying “the text of this link is https://example.com/whatever”. While twitter truncates long URLs with a …, the whole original URL is actually still there.

By knowing the link is on x.com and the link’s text, the default cleaner can skip expanding the redirect with an HTTP request, which is both much faster and doesn’t look like you clicked the link.