From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 2739AB25F; Wed, 23 Nov 2022 15:53:09 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 9173B23AB9; Wed, 23 Nov 2022 15:53:08 +0100 (CET) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS; Wed, 23 Nov 2022 15:53:05 +0100 (CET) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 0494F44DBC; Wed, 23 Nov 2022 15:53:03 +0100 (CET) From: Daniel Tschlatscher To: pve-devel@lists.proxmox.com, pbs-devel@lists.proxmox.com, pmg-devel@lists.proxmox.com Date: Wed, 23 Nov 2022 15:52:09 +0100 Message-Id: <20221123145210.592981-4-d.tschlatscher@proxmox.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221123145210.592981-1-d.tschlatscher@proxmox.com> References: <20221123145210.592981-1-d.tschlatscher@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL -0.136 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Subject: [pve-devel] [PATCH manager v4] make task log downloadable in the PVE manager backend X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Nov 2022 14:53:09 -0000 The read_tasklog API call now stream the whole log file if the query parameter 'download' is set to true. This is done in preparation for the task log download button to be added in the TaskViewer. Signed-off-by: Daniel Tschlatscher --- Changes from v3: * API parameter 'download' for directly streaming the file * Adapted API parameter descriptions to other backends PVE/API2/Tasks.pm | 48 ++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 41 insertions(+), 7 deletions(-) diff --git a/PVE/API2/Tasks.pm b/PVE/API2/Tasks.pm index 9cd1e56b..16041720 100644 --- a/PVE/API2/Tasks.pm +++ b/PVE/API2/Tasks.pm @@ -342,15 +342,20 @@ __PACKAGE__->register_method({ minimum => 0, default => 0, optional => 1, - description => "The line number to start printing at.", + description => "Start at this line when reading the tasklog", }, limit => { type => 'integer', minimum => 0, default => 50, optional => 1, - description => "The maximum amount of lines that should be printed.", + description => "The amount of lines to read from the tasklog.", }, + download => { + type => 'boolean', + optional => 1, + description => "Whether the tasklog file should be downloaded. This parameter can't be used in conjunction with other parameters", + } }, }, returns => { @@ -378,8 +383,6 @@ __PACKAGE__->register_method({ my $rpcenv = PVE::RPCEnvironment::get(); my $user = $rpcenv->get_user(); my $node = $param->{node}; - my $start = $param->{start} // 0; - my $limit = $param->{limit} // 50; $convert_token_task->($task); @@ -387,11 +390,42 @@ __PACKAGE__->register_method({ $rpcenv->check($user, "/nodes/$node", [ 'Sys.Audit' ]); } - my ($count, $lines) = PVE::Tools::dump_logfile($filename, $start, $limit); + my $download = $param->{download} // 0; - $rpcenv->set_result_attrib('total', $count); + if ($download) { + die "Parameter 'download' can't be used with other parameters\n" + if (defined($param->{start}) || defined($param->{limit})); - return $lines; + my $fh; + my $use_compression = ( -s $filename ) > 1024; + + # 1024 is a practical cutoff for the size distribution of our log files. + if ($use_compression) { + open($fh, "-|", "/usr/bin/gzip", "-c", "$filename") + or die "Could not create compressed file stream for file '$filename' - $!\n"; + } else { + open($fh, '<', $filename) or die "Could not open file '$filename' - $!\n"; + } + + return { + download => { + fh => $fh, + stream => 1, + 'content-encoding' => $use_compression ? 'gzip' : undef, + 'content-type' => "text/plain", + 'content-disposition' => "attachment; filename=\"".$param->{upid}."\"", + }, + }, + } else { + my $start = $param->{start} // 0; + my $limit = $param->{limit} // 50; + + my ($count, $lines) = PVE::Tools::dump_logfile($filename, $start, $limit); + + $rpcenv->set_result_attrib('total', $count); + + return $lines; + } }}); -- 2.30.2