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fog--fog/lib/fog/aws/cloud_formation.rb
Paul Thornthwaite 0e1daf3ddd [GH-2711] Replace Fog::Connection with XML shim
Unlike last attempt this replaces Fog::Connection with
Fog::XML::Connection which should be directly compatible.

Fog::Connection is there for old PRs but should be removed real soon.

Providers using JSON should be able to replace "XML" with "Core" within
their code to cut down on the dependency.

If I get the time I may attempt to clean up some but testing with Mock
will mean that is mostly educated guesswork.
2014-02-27 00:54:17 +00:00

125 lines
4.1 KiB
Ruby

require 'fog/aws/core'
module Fog
module AWS
class CloudFormation < Fog::Service
extend Fog::AWS::CredentialFetcher::ServiceMethods
requires :aws_access_key_id, :aws_secret_access_key
recognizes :host, :path, :port, :scheme, :persistent, :region, :use_iam_profile, :aws_session_token, :aws_credentials_expire_at
request_path 'fog/aws/requests/cloud_formation'
request :create_stack
request :update_stack
request :delete_stack
request :describe_stack_events
request :describe_stack_resources
request :describe_stacks
request :get_template
request :validate_template
request :list_stacks
request :list_stack_resources
class Mock
def initialize(options={})
Fog::Mock.not_implemented
end
end
class Real
include Fog::AWS::CredentialFetcher::ConnectionMethods
# Initialize connection to CloudFormation
#
# ==== Notes
# options parameter must include values for :aws_access_key_id and
# :aws_secret_access_key in order to create a connection
#
# ==== Examples
# cf = CloudFormation.new(
# :aws_access_key_id => your_aws_access_key_id,
# :aws_secret_access_key => your_aws_secret_access_key
# )
#
# ==== Parameters
# * options<~Hash> - config arguments for connection. Defaults to {}.
#
# ==== Returns
# * CloudFormation object with connection to AWS.
def initialize(options={})
require 'fog/core/parser'
@use_iam_profile = options[:use_iam_profile]
setup_credentials(options)
@connection_options = options[:connection_options] || {}
options[:region] ||= 'us-east-1'
@host = options[:host] || "cloudformation.#{options[:region]}.amazonaws.com"
@path = options[:path] || '/'
@persistent = options[:persistent] || false
@port = options[:port] || 443
@scheme = options[:scheme] || 'https'
@connection = Fog::XML::Connection.new("#{@scheme}://#{@host}:#{@port}#{@path}", @persistent, @connection_options)
end
def reload
@connection.reset
end
private
def setup_credentials(options)
@aws_access_key_id = options[:aws_access_key_id]
@aws_secret_access_key = options[:aws_secret_access_key]
@aws_session_token = options[:aws_session_token]
@aws_credentials_expire_at = options[:aws_credentials_expire_at]
@hmac = Fog::HMAC.new('sha256', @aws_secret_access_key)
end
def request(params)
refresh_credentials_if_expired
idempotent = params.delete(:idempotent)
parser = params.delete(:parser)
body = Fog::AWS.signed_params(
params,
{
:aws_access_key_id => @aws_access_key_id,
:aws_session_token => @aws_session_token,
:hmac => @hmac,
:host => @host,
:path => @path,
:port => @port,
:version => '2010-05-15'
}
)
begin
@connection.request({
:body => body,
:expects => 200,
:idempotent => idempotent,
:headers => { 'Content-Type' => 'application/x-www-form-urlencoded' },
:method => 'POST',
:parser => parser
})
rescue Excon::Errors::HTTPStatusError => error
match = Fog::AWS::Errors.match_error(error)
raise if match.empty?
raise case match[:code]
when 'NotFound', 'ValidationError'
Fog::AWS::CloudFormation::NotFound.slurp(error, match[:message])
else
Fog::AWS::CloudFormation::Error.slurp(error, "#{match[:code]} => #{match[:message]}")
end
end
end
end
end
end
end