Module: ApiBucket::Amazon::Client::Http

Included in:
ApiBucket::Amazon::Client
Defined in:
lib/api_bucket/amazon/client/http.rb

Instance Method Summary collapse

Instance Method Details

#camelize(s) ⇒ Object 



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# File 'lib/api_bucket/amazon/client/http.rb', line 56

def camelize(s)
  s.to_s.gsub(/\/(.?)/) { "::" + $1.upcase }.gsub(/(^|_)(.)/) { $2.upcase }
end

#prepare_query(options) ⇒ Object 



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# File 'lib/api_bucket/amazon/client/http.rb', line 25

def prepare_query(options)
  query = ''

  secret_key = options.delete(:a_w_s_secret_key)
  request_host = URI.parse(REQUEST_URL).host

  options = options.sort do |c,d|
    c[0].to_s <=> d[0].to_s
  end

  options = options.collect do |a,b|
    [camelize(a.to_s), b.to_s]
  end

  options.each do |key, value|
    next if value.nil?
    query << "&#{key}=#{self.url_encode(value)}"
  end

  query.slice!(0)

  # only amazon
  signature = ''
  unless secret_key.nil?
    request_to_sign="GET\n#{request_host}\n/onca/xml\n#{query}"
    signature = "&Signature=#{sign_request(request_to_sign, secret_key)}"
  end

  "#{query}#{signature}"
end

#send_request(options) ⇒ Object 



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# File 'lib/api_bucket/amazon/client/http.rb', line 4

def send_request(options)
  request_url = "#{REQUEST_URL}?#{self.prepare_query(options)}"
  uri = URI::parse(request_url)
  res = Net::HTTP.get_response(uri)
  res.body
end

#sign_request(url, key) ⇒ Object 



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# File 'lib/api_bucket/amazon/client/http.rb', line 11

def sign_request(url, key)
  openssl_digest = OpenSSL::Digest::Digest.new( 'sha256' )
  signature = OpenSSL::HMAC.digest(openssl_digest, key, url)
  signature = [signature].pack('m').chomp
  signature = URI.escape(signature, Regexp.new("[+=]"))
  return signature
end

#url_encode(string) ⇒ Object 



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# File 'lib/api_bucket/amazon/client/http.rb', line 19

def url_encode(string)
  string.gsub( /([^a-zA-Z0-9_.~-]+)/ ) do
    '%' + $1.unpack( 'H2' * $1.bytesize ).join( '%' ).upcase
  end
end