Checker is a utility to help ensure documentation quality at MongoDB while reducing error prone, tedious tasks.

go install github.com/terakilobyte/checker@latest

The intended use is to check links in changed files. This can be accomplished with:

git diff --name-only HEAD master | tr "\n" "," | xargs checker -p --path . --changes

The above commands first get the list of file names with changes by comparing your current branch to master, then converts that into a comma separated list, lastly passing the list to the program via xargs.

You can also check all links by omitting the --changes flag, though this can take a very long time depending on the size of the project.

See the --help flag for more info.

checker --help

Specifically, it checks to ensure all links are valid. It does this in the following ways:

• It will find all raw links and check them (https?...).
• It will find all role uses defined in the latest release version of rstspec.toml and check resulting interpreted urls.
• It will optionally check uses of :doc: and :ref: targets. Note: checker DOES NOT ignore rst comments. Use the optional -d and -r flags to check for :doc: and :ref: targets, respectively.

Once it scans files for checkable items, it begins checking them. URL checing is performed in a pool of workers (default 10), configurable with the -w flag. Each worker is throttled (default 10), configurable with the -t flag, so that no worker can issue more than (1e9 / (throttle / workers)) requests per second. Setting this value too high can result in inadvertent DOS attacks.. :ref: targets are only checked for existence, since the URL is guaranteed to be accurate based on the way they are generated. :doc: targets check whether the target is in the list of scanned files.