From: Vratko Polak <vrpolak@cisco.com>
Date: Mon, 16 Jan 2023 11:45:25 +0000 (+0100)
Subject: feat(papi): add async mode, use it in scale calls
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=5302eeabb757ccf710568a66b8f6435c1894cd4d;hp=5302eeabb757ccf710568a66b8f6435c1894cd4d;p=csit.git

feat(papi): add async mode, use it in scale calls

+ Introduce two explicit handling modes to save memory in scale test.
+ Connect in async mode for both handling modes (to avoid reconnects).
+ Support both pre- and post-37758 VPP PAPI async behavior.
+ Use control-ping in dumps to emulate sync mode.
+ Do not use it for single reply to avoid VPP-2033.
+ Fix call sites to get their replies with correct handling mode.
+ Drain enqueued replies to avoid subsequent errors.
+ Retry if read returns None too early.
+ Update docstrings.
- Complexity issues reported by pylint postponed, needs larger refactor.
- Explicit replace of VAT is done in subsequent changes.

Ticket: CSIT-1547 CSIT-1671

Change-Id: I3c63fa5c578975cc4dd7fce0babe3ab04ec15ed3
Signed-off-by: Vratko Polak <vrpolak@cisco.com>
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