Git hook to send email notification on repo changes

Question

How do I configure the appropriate Git hook to send a summary email whenever a set of changes is pushed to the upstream repository?

Answer 1

You can use pre-commit:

#!/usr/bin/env ruby

require 'mail'

Mail.defaults do
  delivery_method :smtp,
    address: 'smtp.gmail.com',
    port: 587,
    user_name: '...',
    password: '...',
    authentication: 'plain',
    enable_starttls_auto: true
end

changes=`git diff --cached --unified=0 Gemfile Bowerfile`

unless changes.empty?
  Mail.deliver do
    from     '...'
    to       '...'
    subject  '[PROJECT] Plese confirm team can use libraries'
    body     changes
  end
end

Install:

cd project
cp pre-commit .git/hooks
chmod +x .git/hooks/pre-commit
gem install mail

Test:

echo "# some change" >> Gemfile && git commit -m 'some change' Gemfile