mirror of
https://github.com/openvswitch/ovs
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12bc968e26
Most of ofproto and dpif flows are based on key-value pairs. These key-value pairs can be represented in several ways, eg: key:value, key=value, key(value). Add the following classes that allow parsing of key-value strings: * KeyValue: holds a key-value pair * KeyMetadata: holds some metadata associated with a KeyValue such as the original key and value strings and their position in the global string * KVParser: is able to parse a string and extract it's key-value pairs as KeyValue instances. Before creating the KeyValue instance it tries to decode the value via the KVDecoders * KVDecoders holds a number of decoders that KVParser can use to decode key-value pairs. It accepts a dictionary of keys and callables to allow users to specify what decoder (i.e: callable) to use for each key Also, flake8 seems to be incorrectly reporting an error (E203) in: "slice[index + offset : index + offset]" which is PEP8 compliant. So, ignore this error. Acked-by: Terry Wilson <twilson@redhat.com> Acked-by: Eelco Chaudron <echaudro@redhat.com> Signed-off-by: Adrian Moreno <amorenoz@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
19 lines
411 B
Python
19 lines
411 B
Python
"""Defines helpful decoders that can be used to decode information from the
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flows.
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A decoder is generally a callable that accepts a string and returns the value
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object.
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"""
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def decode_default(value):
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"""Default decoder.
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It tries to convert into an integer value and, if it fails, just
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returns the string.
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"""
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try:
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return int(value, 0)
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except ValueError:
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return value
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