This ruby program is that indexes all avialable Packages from http://cran.r-project.org/src/contrib/PACKAGES.gz.

There are three parts of this program listend below

• Parser Class
• Scheduler
• API

This ruby program is that indexes all avialable Packages from http://cran.r-project.org/src/contrib/PACKAGES.gz. It will parse the given packages and check if they have already been parsed. In case a package have been parsed for information it will not be parsed again.

This check is based on an assumption that md5 checksum will update in case the package is udpated.

Whn the Scheduler is started it runs parser job every 1 day, when it's started it parses the packages once and then repeats the job after 1 day, until it's killed mannually.

API class is to check indexed packages, there are following routes available:

• /packages
• '/packages/:package_name/:version`

Dependencies:

• ruby 2.7.5p203
• Bundler version 2.2.33

First install the dependencies using:

bundle install

To start the Scheduler run:

./schedule.rb

in case perimssion is to granted for execution use the following command:

chmod +x schedule.rb

To run the API use:

rackup

and access the api at:

http://localhost:9292/packages

http://localhost:9292/packages/A3/1.0.0

To run tests use

rspec

and for checking for any changes in code quality after updating , run:

rubocop