package PVE::QMPClient;
use strict;
-#use PVE::SafeSyslog;
+use warnings;
use PVE::QemuServer;
use IO::Multiplex;
+use POSIX qw(EINTR EAGAIN);
use JSON;
+use Time::HiRes qw(usleep gettimeofday tv_interval);
+use Scalar::Util qw(weaken);
+use PVE::IPCC;
+
use Data::Dumper;
# Qemu Monitor Protocol (QMP) client.
# Note: kvm can onyl handle 1 connection, so we close connections asap
sub new {
- my ($class, $eventcb) = @_;
+ my ($class, $eventcb, $qga) = @_;
my $mux = new IO::Multiplex;
}, $class;
$self->{eventcb} = $eventcb if $eventcb;
+ $self->{qga} = $qga if $qga;
$mux->set_callback_object($self);
+ # make sure perl doesn't believe this is a circular reference as we
+ # delete mux in DESTROY
+ weaken($mux->{_object});
+
return $self;
}
-# add a single command to the queue for later execution
+# add a single command to the queue for later execution
# with queue_execute()
sub queue_cmd {
my ($self, $vmid, $callback, $execute, %params) = @_;
$timeout = 60*60; # 1 hour
} elsif ($cmd->{execute} =~ m/^(eject|change)/) {
$timeout = 60; # note: cdrom mount command is slow
+ } elsif ($cmd->{execute} eq 'savevm-start' ||
+ $cmd->{execute} eq 'savevm-end' ||
+ $cmd->{execute} eq 'query-backup' ||
+ $cmd->{execute} eq 'query-block-jobs' ||
+ $cmd->{execute} eq 'backup-cancel' ||
+ $cmd->{execute} eq 'query-savevm' ||
+ $cmd->{execute} eq 'delete-drive-snapshot' ||
+ $cmd->{execute} eq 'snapshot-drive' ) {
+ $timeout = 10*60; # 10 mins ?
} else {
$timeout = 3; # default
}
my $cmdstr = $cmd->{execute} || '';
die "VM $vmid qmp command '$cmdstr' failed - $self->{errors}->{$vmid}"
- if defined($self->{errors}->{$vmid});
+ if defined($self->{errors}->{$vmid});
return $result;
};
my $cmdid_seq = 0;
my $next_cmdid = sub {
$cmdid_seq++;
- return "$$:$cmdid_seq";
+ return "$$"."0".$cmdid_seq;
};
my $close_connection = sub {
my ($self, $vmid) = @_;
-
+
my $fh = $self->{fhs}->{$vmid};
return if !$fh;
-
+
delete $self->{fhs}->{$vmid};
delete $self->{fhs_lookup}->{$fh};
};
my $open_connection = sub {
- my ($self, $vmid) = @_;
+ my ($self, $vmid, $timeout) = @_;
+
+ my $sname = PVE::QemuServer::qmp_socket($vmid, $self->{qga});
- my $sname = PVE::QemuServer::qmp_socket($vmid);
+ $timeout = 1 if !$timeout;
- my $fh = IO::Socket::UNIX->new(Peer => $sname, Blocking => 0, Timeout => 1) ||
- die "unable to connect to VM $vmid socket - $!\n";
+ my $fh;
+ my $starttime = [gettimeofday];
+ my $count = 0;
+ for (;;) {
+ $count++;
+ $fh = IO::Socket::UNIX->new(Peer => $sname, Blocking => 0, Timeout => 1);
+ last if $fh;
+ if ($! != EINTR && $! != EAGAIN) {
+ die "unable to connect to VM $vmid socket - $!\n";
+ }
+ my $elapsed = tv_interval($starttime, [gettimeofday]);
+ if ($elapsed >= $timeout) {
+ die "unable to connect to VM $vmid socket - timeout after $count retries\n";
+ }
+ usleep(100000);
+ }
$self->{fhs}->{$vmid} = $fh;
$self->{fhs_lookup}->{$fh} = $vmid;
$self->{mux}->add($fh);
-
+
return $fh;
};
my ($self) = @_;
my $running = 0;
-
+
foreach my $vmid (keys %{$self->{queue}}) {
my $fh = $self->{fhs}->{$vmid};
next if !$fh;
my $cmd = $self->{current}->{$vmid} = shift @{$self->{queue}->{$vmid}};
$cmd->{id} = &$next_cmdid();
- my $qmpcmd = to_json({
- execute => $cmd->{execute},
- arguments => $cmd->{arguments},
- id => $cmd->{id}});
+ my $fd = -1;
+ if ($cmd->{execute} eq 'add-fd' || $cmd->{execute} eq 'getfd') {
+ $fd = $cmd->{arguments}->{fd};
+ delete $cmd->{arguments}->{fd};
+ }
+
+ my $qmpcmd = undef;
- $self->{mux}->write($fh, $qmpcmd);
+ if($self->{qga}){
+
+ my $qmpcmdid =to_json({
+ execute => 'guest-sync',
+ arguments => { id => int($cmd->{id})}});
+
+ $qmpcmd = to_json({
+ execute => $cmd->{execute},
+ arguments => $cmd->{arguments}});
+
+ $qmpcmd = $qmpcmdid.$qmpcmd;
+
+ }else{
+
+ $qmpcmd = to_json({
+ execute => $cmd->{execute},
+ arguments => $cmd->{arguments},
+ id => $cmd->{id}});
+ }
+
+ if ($fd >= 0) {
+ my $ret = PVE::IPCC::sendfd(fileno($fh), $fd, $qmpcmd);
+ die "sendfd failed" if $ret < 0;
+ } else {
+ $self->{mux}->write($fh, $qmpcmd);
+ }
};
if (my $err = $@) {
$self->{errors}->{$vmid} = $err;
next if !scalar(@{$self->{queue}->{$vmid}}); # no commands for the VM
eval {
- my $fh = &$open_connection($self, $vmid);
- my $cmd = { execute => 'qmp_capabilities', arguments => {} };
- unshift @{$self->{queue}->{$vmid}}, $cmd;
+ my $fh = &$open_connection($self, $vmid, $timeout);
+
+ if(!$self->{qga}){
+ my $cmd = { execute => 'qmp_capabilities', arguments => {} };
+ unshift @{$self->{queue}->{$vmid}}, $cmd;
+ }
+
$self->{mux}->set_timeout($fh, $timeout);
};
if (my $err = $@) {
$self->{queue} = $self->{current} = $self->{fhs} = $self->{fhs_lookup} = {};
}
+sub mux_close {
+ my ($self, $mux, $fh) = @_;
+
+ my $vmid = $self->{fhs_lookup}->{$fh} || 'undef';
+ return if !defined($vmid);
+
+ $self->{errors}->{$vmid} = "client closed connection\n" if !$self->{errors}->{$vmid};
+}
+
# mux_input is called when input is available on one of
# the descriptors.
sub mux_input {
my ($self, $mux, $fh, $input) = @_;
- return if $$input !~ m/}\r\n$/;
-
- my $raw = $$input;
+ my $raw;
- # Remove the input from the input buffer.
- $$input = '';
+ if($self->{qga}){
+ return if $$input !~ s/^([^\n]+}\n[^\n]+})\n(.*)$/$2/so;
+ $raw = $1;
+ }else{
+ return if $$input !~ s/^([^\n]+})\r?\n(.*)$/$2/so;
+ $raw = $1;
+ }
my $vmid = $self->{fhs_lookup}->{$fh};
if (!$vmid) {
eval {
my @jsons = split("\n", $raw);
+ if($self->{qga}){
+
+ die "response is not complete" if @jsons != 2 ;
+
+ my $obj = from_json($jsons[0]);
+ my $cmdid = $obj->{return};
+ die "received responsed without command id\n" if !$cmdid;
+
+ my $curcmd = $self->{current}->{$vmid};
+ die "unable to lookup current command for VM $vmid\n" if !$curcmd;
+
+ delete $self->{current}->{$vmid};
+
+ if ($curcmd->{id} ne $cmdid) {
+ die "got wrong command id '$cmdid' (expected $curcmd->{id})\n";
+ }
+
+ $obj = from_json($jsons[1]);
+
+ if (my $callback = $curcmd->{callback}) {
+ &$callback($vmid, $obj);
+ }
+
+ return;
+ }
+
foreach my $json (@jsons) {
my $obj = from_json($json);
next if defined($obj->{QMP}); # skip monitor greeting
die "unable to lookup current command for VM $vmid\n" if !$curcmd;
delete $self->{current}->{$vmid};
-
+
if ($curcmd->{id} ne $cmdid) {
die "got wrong command id '$cmdid' (expected $curcmd->{id})\n";
}
projects / qemu-server.git / blobdiff