Add a commit comment with the GitHub API

add-commit-comment.rb

require 'rubygems'

require 'rest-client'
require 'json'
require 'pp'

@config = YAML.load(File.open('.github.yml'))
HOSTNAME = '' # add your GHE hostname here
USERNAME = '' # add your username here
PASSWORD = '' # add your password or OAuth token here

api_url = "http://#{USERNAME}:#{PASSWORD}@#{HOSTNAME}/api/v3/"

repo = '' # the name of the repo
sha = '' # the SHA of the commit
payload = {
  'path' => 'something.rb', # the path to the file your comment applies to
  'body' => 'This is your commment',
  'position' => 1 # this is the line number of the of the diff output
}

json_response = JSON.parse(RestClient.post(@api_url +
  "repos/#{USERNAME}/#{repo}/commits/#{sha}/comments",
  payload.to_json, content_type: 'text/json'))

pp json_response