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Libvirt.pm
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Libvirt.pm
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package FusionInventory::Agent::Task::Inventory::Virtualization::Libvirt;
use strict;
use warnings;
use English qw(-no_match_vars);
use XML::TreePP;
use FusionInventory::Agent::Tools;
sub isEnabled {
return canRun('virsh');
}
sub doInventory {
my (%params) = @_;
my $inventory = $params{inventory};
my $logger = $params{logger};
foreach my $machine (_getMachines(logger => $logger)) {
$inventory->addEntry(
section => 'VIRTUALMACHINES', entry => $machine
);
}
foreach my $machine (_getMachines(logger => $logger, uri => 'lxc:///')) {
$inventory->addEntry(
section => 'VIRTUALMACHINES', entry => $machine
);
}
}
sub _getMachines {
my (%params) = @_;
my $uri_param = $params{'uri'} ? "-c ".$params{'uri'} : "";
my @machines = _parseList(
command => "virsh $uri_param --readonly list --all",
logger => $params{logger}
);
foreach my $machine (@machines) {
my %infos = _parseDumpxml(
command => "virsh $uri_param --readonly dumpxml $machine->{NAME}",
logger => $params{logger}
);
$machine->{MEMORY} = $infos{memory};
$machine->{UUID} = $infos{uuid};
$machine->{SUBSYSTEM} = $infos{vmtype};
$machine->{VCPU} = $infos{vcpu};
}
return @machines;
}
sub _parseList {
my (%params) = @_;
my $handle = getFileHandle(%params);
return unless $handle;
my @machines;
while (my $line = <$handle>) {
next if $line =~ /^\s*Id/;
next if $line =~ /^-{5}/;
next unless $line =~ /^\s*(\d+|)(\-|)\s+(\S+)\s+(\S.+)/;
my $name = $3;
# ignore Xen Dom0
next if $name eq 'Domain-0';
my $status = $4;
$status =~ s/^shut off/off/;
my $machine = {
NAME => $name,
STATUS => $status,
VMTYPE => "libvirt",
};
push @machines, $machine;
}
close $handle;
return @machines;
}
sub _getKeyText {
my ($key) = @_;
if (ref($key) eq 'HASH') {
return $key->{'#text'};
} else {
return $key;
}
}
sub _parseDumpxml {
my (%params) = @_;
my $xml = getAllLines(%params);
if (!$xml) {
$params{logger}->error("No virsh xmldump output");
return;
}
my $data;
eval {
$data = XML::TreePP->new()->parse($xml);
};
if ($EVAL_ERROR) {
$params{logger}->error("Failed to parse XML output");
return;
}
my $vcpu = _getKeyText($data->{domain}{vcpu});
my $uuid = _getKeyText($data->{domain}{uuid});
my $vmtype = $data->{domain}{'-type'};
my $memory;
my $currentMemory = _getKeyText($data->{domain}{currentMemory});
if ($currentMemory =~ /(\d+)\d{3}$/) {
$memory = $1;
}
return (
vcpu => $vcpu,
uuid => $uuid,
vmtype => $vmtype,
memory => $memory,
);
}
1;