compute a compound identifier for Virtuozzo

Virtuozzo uses the same UUID for host and guest, so we have to compute
our own compound indentifier for the guest, using local container ID.

Reported-by: Matthieu Marc <Matthieu.Marc@ensam.eu>

lib/FusionInventory/Agent/Task/Inventory/Virtualization/Virtuozzo.pm

@@ -29,6 +29,8 @@ sub doInventory {
     # no service containers in glpi
     my $line = <$handle>;
 
+    my $hostID = $inventory->{h}{CONTENT}{HARDWARE}{UUID} || '';
+
     while (my $line = <$handle>) {
 
         chomp $line;
@@ -70,12 +72,16 @@ sub doInventory {
             }
         }
 
+        # compute specific identifier for the guest, as CTID is
+        # unique only for the local hosts
+        my $uuid = $hostID . '-' . $ctid;
+
         $inventory->addEntry(
             section => 'VIRTUALMACHINES',
             entry => {
                 NAME      => $name,
                 VCPU      => $cpus,
-                UUID      => $ctid,
+                UUID      => $uuid,
                 MEMORY    => $memory,
                 STATUS    => $status,
                 SUBSYSTEM => $subsys,

lib/FusionInventory/Agent/Task/Inventory/Virtualization/Vmsystem.pm

@@ -76,6 +76,17 @@ sub doInventory {
         });
     }
 
+    # compute a compound identifier, as Virtuozzo uses the same identifier
+    # for the host and for the guests
+    if ($type eq 'Virtuozzo') {
+        my $hostID  = $inventory->{h}{CONTENT}{HARDWARE}{UUID} || '';
+        my $guestID = getFirstMatch(
+            file => '/proc/self/status',
+            pattern => qr/^envID:\s*(\d+)/
+        ) || '';
+        $inventory->setHardware({ UUID => $hostID . '-' . $guestID });
+    }
+
     $inventory->setHardware({
         VMSYSTEM => $type,
     });