# File lib/deltacloud/drivers/ec2/ec2_driver.rb, line 320 def valid_credentials?(credentials) client = new_client(credentials) # FIXME: We need to do this call to determine if # EC2 is working with given credentials. There is no # other way to check, if given credentials are valid or not. realms = client.describe_availability_zones rescue false return realms ? true : false end