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first pass at replacing curb with eventmachine connection for flexibility/speed

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This commit is contained in:
Wesley Beary 2009-05-20 18:49:20 -07:00
parent 80d064be89
commit 3381648dc4
6 changed files with 126 additions and 69 deletions
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59
lib/fog/aws.rb
View file

@ -1,2 +1,61 @@
require File.dirname(__FILE__) + '/aws/simpledb'
require File.dirname(__FILE__) + '/aws/s3'
require 'rubygems'
require 'eventmachine'
require 'uri'
module Fog
module AWS
class Connection < EventMachine::Connection
include EventMachine::Deferrable
attr_accessor :headers, :method, :url, :parser, :status
def response
@parser.response
end
def post_init
@data = nil
@headers = {}
end
def connection_completed
uri = URI.parse(@url)
if uri.scheme == 'https'
start_tls
else
request
end
end
def ssl_handshake_completed
request
end
def request
uri = URI.parse(@url)
path = "#{uri.path}#{uri.query.nil? ? "" : "?#{uri.query}"}"
host = "#{uri.host}#{uri.port == 80 ? "" : ":#{uri.port}"}"
headers.merge!({'Host' => host})
send_data("#{method} #{path} HTTP/1.1\r\n#{headers.collect {|k,v| "#{k}: #{v}\r\n"}.join('')}\r\n")
end
def receive_data(data)
unless @data
if data =~ /\AHTTP\/1\.[01] ([\d]{3})/
@status = $1.to_i
else
@status = 0
end
@data = data.split(/<\?xml.*\?>/)[1]
Nokogiri::XML::SAX::Parser.new(@parser).parse(@data)
set_deferred_status(:succeeded, self)
EventMachine.stop_event_loop
end
end
end
end
end

37
lib/fog/aws/s3.rb
View file

@ -1,7 +1,6 @@
require 'rubygems'
require 'base64'
require 'cgi'
require 'curb'
require 'hmac-sha1'
require File.dirname(__FILE__) + '/s3/parsers'
@ -34,46 +33,44 @@ module Fog
@host = options[:host] || 's3.amazonaws.com'
@port = options[:port] || 443
@scheme = options[:scheme] || 'https'
@connection = Curl::Easy.new("#{@scheme}://#{@host}:#{@port}")
end
def get_service
request(:get, "#{@scheme}://#{@host}:#{@port}", Fog::Parsers::AWS::S3::GetServiceParser.new)
request('GET', "#{@scheme}://#{@host}:#{@port}/", Fog::Parsers::AWS::S3::GetServiceParser.new)
end
def put_bucket(name)
request(:put, "#{@scheme}://#{name}.#{@host}:#{@port}", Fog::Parsers::AWS::S3::BasicParser.new)
request('PUT', "#{@scheme}://#{name}.#{@host}:#{@port}/", Fog::Parsers::AWS::S3::BasicParser.new)
end
private
def request(method, url, parser, data=nil)
@connection.headers['Date'] = Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000")
headers = { 'Date' => Time.now.utc.strftime("%a, %d %b %Y %H:%M:%S +0000") }
params = [
method.to_s.upcase,
method,
content_md5 = '',
content_type = '',
@connection.headers['Date'],
headers['Date'],
canonicalized_amz_headers = nil,
canonicalized_resource = '/'
]
string_to_sign = params.delete_if {|value| value.nil?}.join("\n")
hmac = @hmac.update(string_to_sign)
signature = Base64.encode64(hmac.digest).strip
headers['Authorization'] = "AWS #{@aws_access_key_id}:#{signature}"
@connection.url = url
@connection.headers['Authorization'] = "AWS #{@aws_access_key_id}:#{signature}"
case method
when :get
p @connection.url
@connection.http_get
when :put
@connection.http_put(data)
end
p @connection.headers
p @connection.body_str
Nokogiri::XML::SAX::Parser.new(parser).parse(@connection.body_str)
parser.result
response = nil
EventMachine::run {
http = EventMachine.connect(@host, @port, Fog::AWS::Connection) {|connection|
connection.headers = headers
connection.method = method
connection.parser = parser
connection.url = url
}
http.callback {|http| response = http.response}
}
response
end
end

12
lib/fog/aws/s3/parsers.rb
View file

@ -7,14 +7,14 @@ module Fog
class BasicParser < Fog::Parsers::Base
attr_reader :result
attr_reader :response
def initialize
reset
end
def reset
@result = {}
@response = {}
end
def characters(string)
@ -31,20 +31,20 @@ module Fog
def reset
@bucket = {}
@result = { :owner => {}, :buckets => [] }
@response = { :owner => {}, :buckets => [] }
end
def end_element(name)
case name
when 'Bucket'
@result[:buckets] << @bucket
@response[:buckets] << @bucket
@bucket = {}
when 'CreationDate'
@bucket[:creation_date] = @value
when 'DisplayName'
@result[:owner][:display_name] = @value
@response[:owner][:display_name] = @value
when 'ID'
@result[:owner][:id] = @value
@response[:owner][:id] = @value
when 'Name'
@bucket[:name] = @value
end

27
lib/fog/aws/simpledb.rb
View file

@ -1,7 +1,6 @@
require 'rubygems'
require 'base64'
require 'cgi'
require 'curb'
require 'hmac-sha2'
require File.dirname(__FILE__) + '/simpledb/parsers'
@ -36,7 +35,6 @@ module Fog
@nil_string = options[:nil_string]|| 'nil'
@port = options[:port] || 443
@scheme = options[:scheme] || 'https'
@connection = Curl::Easy.new("#{@scheme}://#{@host}:#{@port}")
end
# Create a SimpleDB domain
@ -285,20 +283,23 @@ module Fog
query << "#{key}=#{CGI.escape(params[key]).gsub(/\+/, '%20')}&"
end
method = query.length > 2000 ? 'POST' : 'GET'
string_to_sign = "#{method}\n#{@host}\n/\n" << query.chop
# FIXME: use 'POST' for larger requests
# method = query.length > 2000 ? 'POST' : 'GET'
method = 'GET'
string_to_sign = "#{method}\n#{@host + (@port == 80 ? "" : ":#{@port}")}\n/\n" << query.chop
hmac = @hmac.update(string_to_sign)
query << "Signature=#{CGI.escape(Base64.encode64(hmac.digest).strip).gsub(/\+/, '%20')}"
if method == 'GET'
@connection.url = "#{@scheme}://#{@host}:#{@port}/?#{query}"
@connection.http_get
else
@connection.url = "#{@scheme}://#{@host}:#{@port}"
@connection.http_post(query)
end
Nokogiri::XML::SAX::Parser.new(parser).parse(@connection.body_str)
parser.result
response = nil
EventMachine::run {
http = EventMachine.connect(@host, @port, Fog::AWS::Connection) {|connection|
connection.method = method
connection.parser = parser
connection.url = "#{@scheme}://#{@host}:#{@port}/#{method == 'GET' ? "?#{query}" : ""}"
}
http.callback {|http| response = http.response}
}
response
end
end

52
lib/fog/aws/simpledb/parsers.rb
View file

@ -13,8 +13,8 @@ module Fog
def end_element(name)
case(name)
when 'BoxUsage' then result[:box_usage] = @value.to_f
when 'RequestId' then result[:request_id] = @value
when 'BoxUsage' then response[:box_usage] = @value.to_f
when 'RequestId' then response[:request_id] = @value
end
end
@ -27,15 +27,15 @@ module Fog
class ListDomainsParser < Fog::Parsers::AWS::SimpleDB::BasicParser
def reset
@result = { :domains => [] }
@response = { :domains => [] }
end
def end_element(name)
case(name)
when 'BoxUsage' then result[:box_usage] = @value.to_f
when 'DomainName' then result[:domains] << @value
when 'NextToken' then result[:next_token] = @value
when 'RequestId' then result[:request_id] = @value
when 'BoxUsage' then response[:box_usage] = @value.to_f
when 'DomainName' then response[:domains] << @value
when 'NextToken' then response[:next_token] = @value
when 'RequestId' then response[:request_id] = @value
end
end
@ -44,20 +44,20 @@ module Fog
class DomainMetadataParser < Fog::Parsers::AWS::SimpleDB::BasicParser
def reset
@result = {}
@response = {}
end
def end_element(name)
case name
when 'AttributeNameCount' then result[:attribute_name_count] = @value.to_i
when 'AttributeNamesSizeBytes' then result[:attribute_names_size_bytes] = @value.to_i
when 'AttributeValueCount' then result[:attribute_value_count] = @value.to_i
when 'AttributeValuesSizeBytes' then result[:attribute_values_size_bytes] = @value.to_i
when 'BoxUsage' then result[:box_usage] = @value.to_f
when 'ItemCount' then result[:item_count] = @value.to_i
when 'ItemNamesSizeBytes' then result[:item_names_size_bytes] = @value.to_i
when 'RequestId' then result[:request_id] = @value
when 'Timestamp' then result[:timestamp] = @value
when 'AttributeNameCount' then response[:attribute_name_count] = @value.to_i
when 'AttributeNamesSizeBytes' then response[:attribute_names_size_bytes] = @value.to_i
when 'AttributeValueCount' then response[:attribute_value_count] = @value.to_i
when 'AttributeValuesSizeBytes' then response[:attribute_values_size_bytes] = @value.to_i
when 'BoxUsage' then response[:box_usage] = @value.to_f
when 'ItemCount' then response[:item_count] = @value.to_i
when 'ItemNamesSizeBytes' then response[:item_names_size_bytes] = @value.to_i
when 'RequestId' then response[:request_id] = @value
when 'Timestamp' then response[:timestamp] = @value
end
end
@ -67,15 +67,15 @@ module Fog
def reset
@attribute = nil
@result = { :attributes => {} }
@response = { :attributes => {} }
end
def end_element(name)
case name
when 'BoxUsage' then result[:box_usage] = @value.to_f
when 'BoxUsage' then response[:box_usage] = @value.to_f
when 'Name' then @attribute = @value
when 'RequestId' then result[:request_id] = @value
when 'Value' then (result[:attributes][@attribute] ||= []) << sdb_decode(@value)
when 'RequestId' then response[:request_id] = @value
when 'Value' then (response[:attributes][@attribute] ||= []) << sdb_decode(@value)
end
end
@ -85,17 +85,17 @@ module Fog
def reset
@item_name = @attribute_name = nil
@result = { :items => {} }
@response = { :items => {} }
end
def end_element(name)
case name
when 'BoxUsage' then result[:box_usage] = @value.to_f
when 'BoxUsage' then response[:box_usage] = @value.to_f
when 'Item' then @item_name = @attribute_name = nil
when 'Name' then @item_name.nil? ? @item_name = @value : @attribute_name = @value
when 'NextToken' then result[:next_token] = @value
when 'RequestId' then result[:request_id] = @value
when 'Value' then ((result[:items][@item_name] ||= {})[@attribute_name] ||= []) << sdb_decode(@value)
when 'NextToken' then response[:next_token] = @value
when 'RequestId' then response[:request_id] = @value
when 'Value' then ((response[:items][@item_name] ||= {})[@attribute_name] ||= []) << sdb_decode(@value)
end
end

4
lib/fog/parser.rb
View file

@ -5,14 +5,14 @@ module Fog
module Parsers
class Base < Nokogiri::XML::SAX::Document
attr_reader :result
attr_reader :response
def initialize
reset
end
def reset
@result = {}
@response = {}
end
def characters(string)