SHAHeader
SHAHeader is a simple Rack middleware gem for Rails 3. When required, it will instruct Rails to automatically insert its middleware into the Rack stack and inject your current git SHA hash into all of your dynamic response headers.
Compatibility
The SHAHeader gem is both Ruby 1.8.7 and 1.9.2 compatible. Currently, it is compatible with Rails 3.x.
Installation
In Rails 3, modify your Gemfile
to add the following line:
gem 'sha_header'
That's it. It is distributed with a Railtie
to instruct Rails on how
to set it up, so no other coding is required.
Example
Here's a simple example for a Rails application running locally. The
application has added the above Gemfile
line. Using curl:
curl -I http://localhost:3000/
And, the following response is received:
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
ETag: "25ec427afba8daa376f309559b1b3c5c"
Cache-Control: max-age=0, private, must-revalidate
X-Git-SHA: 8c139c519c731be597d0c37a6e5ce46a27bab174
X-UA-Compatible: IE=Edge
X-Runtime: 0.120340
Content-Length: 0
Connection: Keep-Alive
(Notice the X-Git-SHA
header)