From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 67A06C31E4B for ; Fri, 14 Jun 2019 14:01:23 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3FE1A21537 for ; Fri, 14 Jun 2019 14:01:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3FE1A21537 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:51806 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hbmle-0001ty-CJ for qemu-devel@archiver.kernel.org; Fri, 14 Jun 2019 10:01:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46395) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hbmRl-0001fJ-Tg for qemu-devel@nongnu.org; Fri, 14 Jun 2019 09:40:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hbmRk-0005vN-0S for qemu-devel@nongnu.org; Fri, 14 Jun 2019 09:40:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:30136) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hbmRe-0005pm-8Q; Fri, 14 Jun 2019 09:40:44 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5D79F59474; Fri, 14 Jun 2019 13:40:41 +0000 (UTC) Received: from localhost (unknown [10.40.205.125]) by smtp.corp.redhat.com (Postfix) with ESMTPS id EABF1601AC; Fri, 14 Jun 2019 13:40:40 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Date: Fri, 14 Jun 2019 15:40:07 +0200 Message-Id: <20190614134021.32486-7-mreitz@redhat.com> In-Reply-To: <20190614134021.32486-1-mreitz@redhat.com> References: <20190614134021.32486-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Fri, 14 Jun 2019 13:40:41 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 06/20] event_match: always match on None value X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Maydell , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: John Snow Before, event_match didn't always recurse if the event value was not a dictionary, and would instead check for equality immediately. By delaying equality checking to post-recursion, we can allow leaf values like "5" to match "None" and take advantage of the generic None-returns-True clause. This makes the matching a little more obviously consistent at the expense of being able to check for explicit None values, which is probably not that important given what this function is used for. Signed-off-by: John Snow Message-id: 20190528183857.26167-1-jsnow@redhat.com Signed-off-by: Max Reitz --- python/qemu/__init__.py | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/python/qemu/__init__.py b/python/qemu/__init__.py index 98ed8a2e28..dbaf8a5311 100644 --- a/python/qemu/__init__.py +++ b/python/qemu/__init__.py @@ -409,27 +409,31 @@ class QEMUMachine(object): =20 The match criteria takes the form of a matching subdict. The eve= nt is checked to be a superset of the subdict, recursively, with match= ing - values whenever those values are not None. + values whenever the subdict values are not None. + + This has a limitation that you cannot explicitly check for None = values. =20 Examples, with the subdict queries on the left: - None matches any object. - {"foo": None} matches {"foo": {"bar": 1}} - - {"foo": {"baz": None}} does not match {"foo": {"bar": 1}} - - {"foo": {"baz": 2}} matches {"foo": {"bar": 1, "baz": 2}} + - {"foo": None} matches {"foo": 5} + - {"foo": {"abc": None}} does not match {"foo": {"bar": 1}} + - {"foo": {"rab": 2}} matches {"foo": {"bar": 1, "rab": 2}} """ if match is None: return True =20 - for key in match: - if key in event: - if isinstance(event[key], dict): + try: + for key in match: + if key in event: if not QEMUMachine.event_match(event[key], match[key= ]): return False - elif event[key] !=3D match[key]: + else: return False - else: - return False - return True + return True + except TypeError: + # either match or event wasn't iterable (not a dict) + return match =3D=3D event =20 def event_wait(self, name, timeout=3D60.0, match=3DNone): """ --=20 2.21.0