The heat.api.aws.utils Module

Helper utilities related to the AWS API implementations.

heat.api.aws.utils.extract_param_list(params, prefix=”)

Extract a list-of-dicts based on parameters containing AWS style list.

MetricData.member.1.MetricName=buffers MetricData.member.1.Unit=Bytes MetricData.member.1.Value=231434333 MetricData.member.2.MetricName=buffers2 MetricData.member.2.Unit=Bytes MetricData.member.2.Value=12345

This can be extracted by passing prefix=MetricData, resulting in a list containing two dicts.

heat.api.aws.utils.extract_param_pairs(params, prefix=”, keyname=”, valuename=”)

Extract user input params from AWS style parameter-pair encoded list.

In the AWS API list items appear as two key-value pairs (passed as query parameters) with keys of the form below:

Prefix.member.1.keyname=somekey Prefix.member.1.keyvalue=somevalue Prefix.member.2.keyname=anotherkey Prefix.member.2.keyvalue=somevalue

We reformat this into a dict here to match the heat engine API expected format.

heat.api.aws.utils.format_response(action, response)

Format response from engine into API format.

heat.api.aws.utils.get_param_value(params, key)

Looks up an expected parameter in a parsed params dict.

Helper function, looks up an expected parameter in a parsed params dict and returns the result. If params does not contain the requested key we raise an exception of the appropriate type.

heat.api.aws.utils.reformat_dict_keys(keymap=None, inputdict=None)

Utility function for mapping one dict format to another.