Link Checker

Crawls a website searching for invalid links.

mix crawl <base_url>

--max-depth: Maximum depth the scraper will travel. Defaults to 3.

--num-workers: Maximum amount of concurrent workers making requests to the provided URL. Defaults to 5.

In mix.exs

def deps do
   [{:crawler, git: "https://github.com/mbta/404_checker"}]
end

Output

Links that respond with a status code outside the range of 200 - 399 are marked as invalid and printed.

If no links are found to be invalid, the task exits with status code 0, otherwise, exits with status code 1.