def initialize(aws_access_key_id=nil, aws_secret_access_key=nil, params={})
init({:name => 'EC2',
:default_host => ENV['EC2_URL'] ? URI.parse(ENV['EC2_URL']).host : DEFAULT_HOST,
:default_port => ENV['EC2_URL'] ? URI.parse(ENV['EC2_URL']).port : DEFAULT_PORT,
:default_service => ENV['EC2_URL'] ? URI.parse(ENV['EC2_URL']).path : DEFAULT_PATH,
:default_protocol => ENV['EC2_URL'] ? URI.parse(ENV['EC2_URL']).scheme : DEFAULT_PROTOCOL,
:api_version => API_VERSION},
aws_access_key_id || ENV['AWS_ACCESS_KEY_ID'],
aws_secret_access_key|| ENV['AWS_SECRET_ACCESS_KEY'],
params)
amazon_problems = ['InternalError']
end