Simple file uploader to Amazon S3 Service 1

Posted by Dan Sosedoff on March 22, 2009

For a long time i was thinking that Amazon`s Simple Storage Service (S3) is very complicated thing. But, it was before i tried it. Couple days ago, i got account to S3 and started exploring API`s and architecture. Now i see how stupid i was :) It`s really easy to handle all operations with files and buckets. Pricing also comfortable.

Welcome to cloud computing! :) I started using it with Ruby. Regular gem and docs can be found at http://amazon.rubyforge.org/

So, the first useful tool i decided to created – simple uploader of local files to amazons server.
First, we need to create bucket and make it public:

Bucket.create('NAME_HERE',:access => :public_read)

Here`s the client ruby script:

#!/usr/bin/ruby
 
require 'rubygems'
require 'aws/s3'
 
include AWS::S3
 
$s3_bucket = "BUCKET_NAME"
$s3_key = "API_KEY"
$s3_secret = "API_SECRET"
 
def s3_store(localfile)
	if File.exists?(localfile) && File.readable?(localfile)
		puts "Uploading file [#{localfile}]. Size: #{File.size(localfile)} bytes."
		name = File.basename(localfile)
		Base.establish_connection!(:access_key_id => $s3_key, :secret_access_key => $s3_secret)
		S3Object.store(name, open(localfile), $s3_bucket, :access => :public_read)
		puts "Download link: http://s3.amazonaws.com/#{$s3_bucket}/#{name}"
	else
		puts "File not exists or not accessible. Please check file and try again!"
	end
end
 
path = ARGV[0]
if !path
	"Please specify the file to upload."
else
	s3_store(path)
end

Download script: http://files.sosedoff.com/036cfedd/

BTW, I found cool firefox add-on to manage S3 objects/files. It`s pretty easy.
Link to extension – http://www.s3fox.net
Screenshot:

Fetching album covers from Amazon Web Service 1

Posted by Dan Sosedoff on February 15, 2009

On my small project i was looking for web service to get media covers from. I found that i can use Amazon Web Services API. The documentation for this ECommerce Service is pretty old, but it still works.
More detailed information about API you can find here

#!/usr/bin/ruby
 
require 'rubygems'
require 'net/http'
require 'cgi'
require 'xmlsimple'
 
$amazon_key = "12DR2PGAQT303YTEWP02" # NOT MY KEY (FOUND ON INTERNET)
$amazon_host = "webservices.amazon.com"
 
def fetch_cover(artist, album)
	artist = CGI.escape(artist)
	album = CGI.escape(album)
 
	path = "/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=#{$amazon_key}&Operation=ItemSearch&SearchIndex=Music&Artist=#{artist}&ResponseGroup=Images&Keywords=#{album}"
	data = Net::HTTP.get($amazon_host, path)
	xml = XmlSimple.xml_in(data)
	if xml['Items'][0]['TotalResults'].to_s.to_i then
		cover = {
			:small => xml['Items'][0]['Item'][0]['SmallImage'][0]['URL'],
			:medium => xml['Items'][0]['Item'][0]['MediumImage'][0]['URL'],
			:big => xml['Items'][0]['Item'][0]['LargeImage'][0]['URL']
		}
		return cover
	end
	return nil
end

So, after execution of this function you will get array with 3 different images (small, medium, big).
I use XML-Simple gem for ruby. Can be installed this way

sudo gem install xml-simple

That`s it. Download script