[pve-devel] [PATCH qemu-server 09/11] agent: move qga_check_running() helper to agent module

[Fiona Ebner]

Removes the dependency on PVE::QemuServer in the agent module. This
makes it possible to use the agent module from nearly everywhere
without introducing a(n indirect) cyclic dependency.

Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>
---
 PVE/API2/Qemu.pm         |  5 +++--
 PVE/QemuConfig.pm        |  4 ++--
 PVE/QemuServer.pm        | 13 +------------
 PVE/QemuServer/Agent.pm  | 15 +++++++++++++--
 PVE/VZDump/QemuServer.pm |  2 +-
 5 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/PVE/API2/Qemu.pm b/PVE/API2/Qemu.pm
index 626cce45..48a9b75a 100644
--- a/PVE/API2/Qemu.pm
+++ b/PVE/API2/Qemu.pm
@@ -27,6 +27,7 @@ use PVE::GuestHelpers qw(assert_tag_permissions);
 use PVE::GuestImport;
 use PVE::QemuConfig;
 use PVE::QemuServer;
+use PVE::QemuServer::Agent;
 use PVE::QemuServer::Cloudinit;
 use PVE::QemuServer::CPUConfig;
 use PVE::QemuServer::Drive qw(checked_volume_format checked_parse_volname);
@@ -4436,7 +4437,7 @@ __PACKAGE__->register_method({
 		PVE::QemuConfig->write_config($vmid, $conf);
 
 		my $do_trim = PVE::QemuServer::get_qga_key($conf, 'fstrim_cloned_disks');
-		if ($running && $do_trim && PVE::QemuServer::qga_check_running($vmid)) {
+		if ($running && $do_trim && PVE::QemuServer::Agent::qga_check_running($vmid)) {
 		    eval { mon_cmd($vmid, "guest-fstrim") };
 		}
 
@@ -6212,7 +6213,7 @@ __PACKAGE__->register_method({
 		    return $info;
 		},
 		'fstrim' => sub {
-		    if (PVE::QemuServer::qga_check_running($state->{vmid})) {
+		    if (PVE::QemuServer::Agent::qga_check_running($state->{vmid})) {
 			eval { mon_cmd($state->{vmid}, "guest-fstrim") };
 			warn "fstrim failed: $@\n" if $@;
 		    }
diff --git a/PVE/QemuConfig.pm b/PVE/QemuConfig.pm
index e941f093..2ee615fa 100644
--- a/PVE/QemuConfig.pm
+++ b/PVE/QemuConfig.pm
@@ -8,7 +8,7 @@ use Scalar::Util qw(blessed);
 use PVE::AbstractConfig;
 use PVE::INotify;
 use PVE::JSONSchema;
-use PVE::QemuServer::Agent;
+use PVE::QemuServer::Agent qw(qga_check_running);
 use PVE::QemuServer::CPUConfig;
 use PVE::QemuServer::Drive;
 use PVE::QemuServer::Helpers;
@@ -279,7 +279,7 @@ sub __snapshot_check_freeze_needed {
 
     my $running = $class->__snapshot_check_running($vmid);
     if (!$save_vmstate) {
-	return ($running, $running && PVE::QemuServer::parse_guest_agent($config)->{enabled} && PVE::QemuServer::qga_check_running($vmid));
+	return ($running, $running && PVE::QemuServer::parse_guest_agent($config)->{enabled} && qga_check_running($vmid));
     } else {
 	return ($running, 0);
     }
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 317c09f2..9a81030e 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -51,7 +51,7 @@ use PVE::Tools qw(run_command file_read_firstline file_get_contents dir_glob_for
 use PVE::QMPClient;
 use PVE::QemuConfig;
 use PVE::QemuConfig::NoWrite;
-use PVE::QemuServer::Agent;
+use PVE::QemuServer::Agent qw(qga_check_running);
 use PVE::QemuServer::Helpers qw(config_aware_timeout min_version kvm_user_version windows_version);
 use PVE::QemuServer::Cloudinit;
 use PVE::QemuServer::CGroup;
@@ -7946,17 +7946,6 @@ sub do_snapshots_with_qemu {
     return;
 }
 
-sub qga_check_running {
-    my ($vmid, $nowarn) = @_;
-
-    eval { mon_cmd($vmid, "guest-ping", timeout => 3); };
-    if ($@) {
-	warn "QEMU Guest Agent is not running - $@" if !$nowarn;
-	return 0;
-    }
-    return 1;
-}
-
 =head3 template_create($vmid, $conf [, $disk])
 
 Converts all used disk volumes for the VM with the identifier C<$vmid> and
diff --git a/PVE/QemuServer/Agent.pm b/PVE/QemuServer/Agent.pm
index 92e02645..9f1450ff 100644
--- a/PVE/QemuServer/Agent.pm
+++ b/PVE/QemuServer/Agent.pm
@@ -6,7 +6,6 @@ use warnings;
 use JSON;
 use MIME::Base64 qw(decode_base64 encode_base64);
 
-use PVE::QemuServer;
 use PVE::QemuServer::Helpers;
 use PVE::QemuServer::Monitor;
 
@@ -15,8 +14,20 @@ use base 'Exporter';
 our @EXPORT_OK = qw(
 check_agent_error
 agent_cmd
+qga_check_running
 );
 
+sub qga_check_running {
+    my ($vmid, $nowarn) = @_;
+
+    eval { PVE::QemuServer::Monitor::mon_cmd($vmid, "guest-ping", timeout => 3); };
+    if ($@) {
+	warn "QEMU Guest Agent is not running - $@" if !$nowarn;
+	return 0;
+    }
+    return 1;
+}
+
 sub check_agent_error {
     my ($result, $errmsg, $noerr) = @_;
 
@@ -43,7 +54,7 @@ sub assert_agent_available {
 
     die "No QEMU guest agent configured\n" if !defined($conf->{agent});
     die "VM $vmid is not running\n" if !PVE::QemuServer::Helpers::vm_running_locally($vmid);
-    die "QEMU guest agent is not running\n" if !PVE::QemuServer::qga_check_running($vmid, 1);
+    die "QEMU guest agent is not running\n" if !qga_check_running($vmid, 1);
 }
 
 # loads config, checks if available, executes command, checks for errors
diff --git a/PVE/VZDump/QemuServer.pm b/PVE/VZDump/QemuServer.pm
index b686da84..80038d8f 100644
--- a/PVE/VZDump/QemuServer.pm
+++ b/PVE/VZDump/QemuServer.pm
@@ -1058,7 +1058,7 @@ sub qga_fs_freeze {
     my ($self, $task, $vmid) = @_;
     return if !$self->{vmlist}->{$vmid}->{agent} || $task->{mode} eq 'stop' || !$self->{vm_was_running} || $self->{vm_was_paused};
 
-    if (!PVE::QemuServer::qga_check_running($vmid, 1)) {
+    if (!PVE::QemuServer::Agent::qga_check_running($vmid, 1)) {
 	$self->loginfo("skipping guest-agent 'fs-freeze', agent configured but not running?");
 	return;
     }
-- 
2.39.5