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Add a flow formatting framework and one implementation for console printing using rich. The flow formatting framework is a simple set of classes that can be used to write different flow formatting implementations. It supports styles to be described by any class, highlighting and config-file based style definition. The first flow formatting implementation is also introduced: the ConsoleFormatter. It uses the an advanced rich-text printing library [1]. The console printing supports: - Heatmap: printing the packet/byte statistics of each flow in a color that represents its relative size: blue (low) -> red (high). - Printing a banner with the file name and alias. - Extensive style definition via config file. This console format is added to both OpenFlow and Datapath flows. Examples: - Highlight drops in datapath flows: $ ovs-flowviz -i flows.txt --highlight "drop" datapath console - Quickly detect where most packets are going using heatmap and paginated output: $ ovs-ofctl dump-flows br-int | ovs-flowviz openflow console -h [1] https://rich.readthedocs.io/en/stable/introduction.html Acked-by: Eelco Chaudron <echaudro@redhat.com> Signed-off-by: Adrian Moreno <amorenoz@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Python library for working with Open vSwitch