Heat Template Version
The value of heat_template_version tells Heat not only the format of the template but also features that will be validated and supported. For example, Heat currently supports the following values for theheat_template_version key:
2013-05-23- The key with value 2013-05-23 indicates that the YAML document is a HOT template and it may contain features implemented until the Icehouse release. This version supports the following functions (some are back ported to this version):
- ::
- get_attr get_file get_param get_resource list_join resource_facade str_replace Fn::Base64 Fn::GetAZs Fn::Join Fn::MemberListToMap Fn::Replace Fn::ResourceFacade Fn::Select Fn::Split Ref
2014-10-16- The key with value 2014-10-16 indicates that the YAML document is a HOT template and it may contain features added and/or removed up until the Juno release. This version removes most CFN functions that were supported in the Icehouse release, i.e. the 2013-05-23 version. So the supported functions now are:
- ::
- get_attr get_file get_param get_resource list_join resource_facade str_replace Fn::Select
2015-04-30- The key with value 2015-04-30 indicates that the YAML document is a HOT template and it may contain features added and/or removed up until the Kilo release. This version adds the repeatfunction. So the complete list of supported functions is:
- ::
- get_attr get_file get_param get_resource list_join repeat digest resource_facade str_replace Fn::Select
2015-10-15
The key with value 2015-10-15 indicates that the YAML document is a HOT template and it may
contain features added and/or removed up until the Liberty release. This version removes the
Fn::Select function, path based get_attr/get_param references should be used instead. Moreover
get_attr since this version returns dict of all attributes for the given resource excluding show
attribute, if there’s no <attribute name> specified, e.g. { get_attr: [<resource name>]}. This version
also adds the str_split function and support for passing multiple lists to the existing list_join
function. The complete list of supported functions is:
::
get_attr get_file get_param get_resource list_join repeat digest resource_facade str_replace str_split
