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Build Status Coverage Status Code Climate Dependency Status License Documentation


CSVlint is an online validation tool for CSV files. It validates conformity of CSV releases to standards, checks for missing or malformed data, and can validate against both CSVW and Datapackage schema standards.

Summary of features

CSVlint is a rails app designed to act as a continuous validation service, so that when data is changed online, the validation is updated. Data can be online or uploaded for private validation.

The validation code is actually all done in a Ruby gem that can also be freely reused in other projects

Follow the public feature roadmap for CSVLint



Ruby version 2.3.1

The application uses mongod and redis databases as background jobs for data persistence

.env file (see below)

Environment variables

For running tests:


For development add:


In production add:


Setting up the required environment variables

Pusher setup
  1. Log in to
  2. Create a new application and call it something sensible
  3. Select the App Keys tab and get the values and paste them in to your .env file

NOTE: You may be set up for a non-default Pusher cluster (The default is us-east-1), which causes some confusion. Look at your App overiew on and get the Cluster value from the 'Keys' section. Add this to your .env file as PUSHER_CLUSTER=

Create an AWS S3 bucket and grant its permissions accordingly

  1. Log in to your AWS account and create an S3 bucket with a sensible name
  2. Now head to the AWS IAM (Identity and Access Management page)
  3. Click Users
  4. Add user (call it something sensible like octopub-development) and select Programmatic Access for Access Type.
  5. For permissions, select Attach existing policies directly - this will open a new tab in your browser.
  6. CLick create your own policy and give it a name, like octopub-dev-permissions, then for the policy document, use the following template, but add your own bucket name instead of <BUCKETNAME>.
   "Version": "2012-10-17",
   "Statement": [
           "Sid": "AllowAdminAccessToBucketOnly",
           "Action": [
           "Effect": "Allow",
           "Resource": [
  1. Click validate policy just to be sure you've not made a typo. Then confirm.
  2. Now back on the Set permissions page, select the policy you've just created in the table by selecting the checkbox. Then click Review then Create user.
  3. Now download the csv file containing the credentials and add the following to your .env file

System dependencies and Configuration

Install mongo: brew install mongo redis (if using brew)

make a data directory for mongo databases sudo mkdir -p /data/db

change directory ownership so that mongodb can operate sudo chown -R $USERNAME /data/

Development: Running the full application locally

Pre-requisites: AWS account, Pusher Account - these instructions assume you have these in place already.

Checkout the repository and run bundle in the checked out directory.

Database initialization

run mongo : mongod

run redis : redis-server

Services (job queues, cache servers, search engines, etc.)

to initialise the app run this in root directory of app

foreman start

Known issues & Troubleshooting

If you have trouble running bundle try these (if you see errors relating to openssl, eventmachine or therubyracer)

brew install openssl # if not installed gem install eventmachine -v '1.0.7' -- --with-cppflags=-I/usr/local/opt/openssl/include gem install libv8 -v '' -- --with-system-v8 gem install therubyracer -- --with-v8-dir=/usr/local/opt/v8-315 shakacode/react-webpack-rails-tutorial#266 ~ rubyracer with CSVlint


ensure phantomjs is installed, brew install phantomjs (or however you prefer)

To run the entire suite of rspec unit tests and cucumber features execute bundle exec rake

alternatively execute each suite separately with

for unit tests execute bundle exec rspec

for Cucumber features execute bundle exec cucumber

Rake Tasks

rake csvs:clean_up rake summary:generate rake clean_up:dupes


Deployment on Heroku