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@oparrish
Created September 20, 2011 15:44
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Rake task for copying Rails compiled assets to S3
require 'aws/s3'
require 'digest/md5'
require 'mime/types'
## These are some constants to keep track of my S3 credentials and
## bucket name. Nothing fancy here.
AWS_ACCESS_KEY_ID = ENV['S3_KEY']
AWS_SECRET_ACCESS_KEY = ENV['S3_SECRET']
AWS_BUCKET = ENV['S3_BUCKET']
## This defines the rake task `assets:deploy`.
namespace :assets do
desc "Deploy all assets in public/assets to S3/Cloudfront"
task :deploy, :env, :branch do |t, args|
## Use the `s3` gem to connect my bucket
puts "== Uploading assets to S3/Cloudfront"
AWS::S3::Base.establish_connection!(
:access_key_id => AWS_ACCESS_KEY_ID,
:secret_access_key => AWS_SECRET_ACCESS_KEY
)
service = AWS::S3::Service.new(
:access_key_id => AWS_ACCESS_KEY_ID,
:secret_access_key => AWS_SECRET_ACCESS_KEY)
bucket = AWS::S3::Bucket.find(AWS_BUCKET)
## Needed to show progress
STDOUT.sync = true
## Find all files (recursively) in ./public/assets and process them.
Dir.glob("public/assets/*").each do |file|
## Only upload files, we're not interested in directories
if File.file?(file)
## Slash 'public/' from the filename for use on S3
remote_file = file.gsub("public/", "")
## Try to find the remote_file, an error is thrown when no
## such file can be found, that's okay.
begin
obj = bucket[remote_file]
rescue
obj = nil
end
## If the object does not exist, or if the MD5 Hash / etag of the
## file has changed, upload it.
if !obj || (obj.etag != Digest::MD5.hexdigest(File.read(file)))
print "U"
## Simply create a new object, write the content and set the proper
## mime-type. `obj.save` will upload and store the file to S3.
AWS::S3::S3Object.store(remote_file, open(file), AWS_BUCKET)
else
print "."
end
end
end
STDOUT.sync = false # Done with progress output.
puts
puts "== Done syncing assets"
end
end
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