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资源说明：Sinatra app to manipulate images given by url via mini_magick and image_magick. completly evented
EventMachine-driven Sinatra app to manipulate images given by url via evented-magick (image-magick).
# resize
/magick?url=http://github.com/images/modules/header/logov3.png&size=200x100
# resize to 200 width / unlimited height
/magick?url=http://github.com/images/modules/header/logov3.png&size=200x
### Startup
sudo gem install bundler
bundle install
thin start
curl localhost:3000/...see above...
### As Middleware
TODO
### Security
If the file `config/secret` (e.g. including 'my secret') exists, only requests with params hashed with this secret will be accepted.
require 'digest/md5'
def magick_query(params)
hash = Digest::MD5.hexdigest('my secret' + params.map(&:to_s).sort.to_s)
params = params.merge(:hash => hash)
params.map{|k,v| "#{k}=#{v}"}.join('&')
end
`curl http://localhost/magick?#{magick_query(:url=>'xxx', :size=>'100x200')}`
### Performance
Everything is evented, so its parallel and fast.
Add caching server infront of the app, e.g. Varnish or Rack::Cache
to mak it production-ready.
TODO
=====
- add cropping
Author
======
[Michael Grosser](http://pragmatig.wordpress.com)
grosser.michael@gmail.com
Hereby placed under public domain, do what you want, just do not hold me accountable...
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