From patchwork Fri Aug 30 13:38:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 13785129 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id B2CABCA0FF4 for ; Fri, 30 Aug 2024 13:40:59 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sk1rL-0000rg-42; Fri, 30 Aug 2024 09:40:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sk1rH-0000dp-Qr for qemu-devel@nongnu.org; Fri, 30 Aug 2024 09:40:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sk1rF-0005Ud-PJ for qemu-devel@nongnu.org; Fri, 30 Aug 2024 09:40:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1725025208; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=t0yj/K7Piv+Pfe1AqD43B1EX2IY/geuILA4GSFmvF50=; b=D16iQz4eLBQSx0PvPds+HEwhhmQHdbcPoamPi3xcfrp4anWpeyYHFrA+fHpiArjOhpP9cP rlNERQ9UAXaYbemjYV2fS71S/ruvr8IqQpcq35GUnLhaGJA0bkF6CNyzbjevclclb79iqr GgBEgwke4SgjRn5fU6qEwx0jGCHI0KY= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-491-rvc0OQWHMZSCcYwyI_05dA-1; Fri, 30 Aug 2024 09:40:05 -0400 X-MC-Unique: rvc0OQWHMZSCcYwyI_05dA-1 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id D309B19560B4; Fri, 30 Aug 2024 13:40:04 +0000 (UTC) Received: from thuth-p1g4.redhat.com (unknown [10.39.192.7]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 97678300019C; Fri, 30 Aug 2024 13:40:01 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , "Daniel P . Berrange" Cc: =?utf-8?q?Alex_Benn=C3=A9e?= , Ani Sinha , Richard Henderson , John Snow , Fabiano Rosas Subject: [PATCH v5 16/44] tests/functional: Allow asset downloading with concurrent threads Date: Fri, 30 Aug 2024 15:38:10 +0200 Message-ID: <20240830133841.142644-17-thuth@redhat.com> In-Reply-To: <20240830133841.142644-1-thuth@redhat.com> References: <20240830133841.142644-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org When running "make -j$(nproc) check-functional", tests that use the same asset might be running in parallel. Improve the downloading to detect this situation and wait for the other thread to finish the download. Signed-off-by: Thomas Huth --- tests/functional/qemu_test/asset.py | 62 ++++++++++++++++++++++++----- 1 file changed, 51 insertions(+), 11 deletions(-) diff --git a/tests/functional/qemu_test/asset.py b/tests/functional/qemu_test/asset.py index b329ab7dbe..d3be2aff82 100644 --- a/tests/functional/qemu_test/asset.py +++ b/tests/functional/qemu_test/asset.py @@ -12,6 +12,7 @@ import sys import unittest import urllib.request +from time import sleep from pathlib import Path from shutil import copyfileobj @@ -55,6 +56,35 @@ def _check(self, cache_file): def valid(self): return self.cache_file.exists() and self._check(self.cache_file) + def _wait_for_other_download(self, tmp_cache_file): + # Another thread already seems to download the asset, so wait until + # it is done, while also checking the size to see whether it is stuck + try: + current_size = tmp_cache_file.stat().st_size + new_size = current_size + except: + if os.path.exists(self.cache_file): + return True + raise + waittime = lastchange = 600 + while waittime > 0: + sleep(1) + waittime -= 1 + try: + new_size = tmp_cache_file.stat().st_size + except: + if os.path.exists(self.cache_file): + return True + raise + if new_size != current_size: + lastchange = waittime + current_size = new_size + elif lastchange - waittime > 90: + return False + + self.log.debug("Time out while waiting for %s!", tmp_cache_file) + raise + def fetch(self): if not self.cache_dir.exists(): self.cache_dir.mkdir(parents=True, exist_ok=True) @@ -70,18 +100,28 @@ def fetch(self): self.log.info("Downloading %s to %s...", self.url, self.cache_file) tmp_cache_file = self.cache_file.with_suffix(".download") - try: - resp = urllib.request.urlopen(self.url) - except Exception as e: - self.log.error("Unable to download %s: %s", self.url, e) - raise + for retries in range(3): + try: + with tmp_cache_file.open("xb") as dst: + with urllib.request.urlopen(self.url) as resp: + copyfileobj(resp, dst) + break + except FileExistsError: + self.log.debug("%s already exists, " + "waiting for other thread to finish...", + tmp_cache_file) + if self._wait_for_other_download(tmp_cache_file): + return str(self.cache_file) + self.log.debug("%s seems to be stale, " + "deleting and retrying download...", + tmp_cache_file) + tmp_cache_file.unlink() + continue + except Exception as e: + self.log.error("Unable to download %s: %s", self.url, e) + tmp_cache_file.unlink() + raise - try: - with tmp_cache_file.open("wb+") as dst: - copyfileobj(resp, dst) - except: - tmp_cache_file.unlink() - raise try: # Set these just for informational purposes os.setxattr(str(tmp_cache_file), "user.qemu-asset-url",