microversion_parse

A simple parser for OpenStack microversion headers:

import microversion_parse

# headers is a dict of headers with folded (comma-separated
# values) or a list of header, value tuples
version = microversion_parse.get_version(
    headers, service_type='compute',
    legacy_headers=['x-openstack-nova-api-version'])

It processes microversion headers with the standard form:

OpenStack-API-Version: compute 2.1

If provided with a legacy_headers argument, this is treated as a list of headers to check for microversions. Some examples of headers include:

OpenStack-telemetry-api-version: 2.1
OpenStack-nova-api-version: 2.1
X-OpenStack-nova-api-version: 2.1

If a version string cannot be found, None will be returned. If the input is incorrect usual Python exceptions (ValueError, TypeError) are allowed to raise to the caller.

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