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package urpm::parallel_ssh;
#- parallel resolve_dependencies
sub parallel_resolve_dependencies {
my ($parallel, $synthesis, $urpm, $state, $requested, %options) = @_;
#- first propagate the synthesis file to all machine.
foreach (keys %{$parallel->{nodes}}) {
$urpm->{log}("parallel_ssh: scp '$synthesis' '$_:$synthesis'");
system "scp '$synthesis' '$_:$synthesis'";
}
$parallel->{synthesis} = $synthesis;
#- compute command line of urpm? tools.
my $line = $options{auto_select} ? ' --auto-select' : '';
foreach (keys %$requested) {
if (/\|/) {
#- simplified choices resolution.
my $choice = $options{callback_choices}->($urpm, undef, $state, [ map { /^\d+$/ ?
$urpm->{depslist}[$_] :
$urpm->search($_) } split '\|', $_ ]);
$line .= ' '.$choice->fullname;
} else {
my $pkg = $urpm->{depslist}[$_] or next;
$line .= ' '.$pkg->fullname;
}
}
#- execute urpmq to determine packages to install.
my ($node, $cont, %chosen);
local (*F, $_);
do {
$cont = 0; #- prepare to stop iteration.
#- the following state should be cleaned for each iteration.
delete $state->{selected};
#- now try an iteration of urpmq.
foreach my $node (keys %{$parallel->{nodes}}) {
$urpm->{log}("parallel_ssh: ssh $node urpmq --synthesis $synthesis -f $line ".join(' ', keys %chosen));
open F, "ssh $node urpmq --synthesis $synthesis -fdu $line ".join(' ', keys %chosen)." |";
while ($_ = <F>) {
chomp;
if (/\|/) {
#- distant urpmq returned a choices, check if it has already been chosen
#- or continue iteration to make sure no more choices are left.
$cont ||= 1; #- invalid transitory state (still choices is strange here if next sentence is not executed).
unless (grep { exists $chosen{$_} } split '\|', $_) {
#- it has not yet been chosen so need to ask user.
$cont = 2;
my $choice = $options{callback_choices}->($urpm, undef, $state, [ map { $urpm->search($_) } split '\|', $_ ]);
$chosen{scalar $choice->fullname} = $choice;
}
} else {
my $pkg = $urpm->search($_) or next; #TODO
$state->{selected}{$pkg->id}{$node} = $_;
}
}
close F or $urpm->{fatal}(1, _("host %s does not have a good version of urpmi", $node));
}
#- check for internal error of resolution.
$cont == 1 and die "internal distant urpmq error on choice not taken";
} while ($cont);
#- keep trace of what has been chosen finally (if any).
$parallel->{line} = "$line ".join(' ', keys %chosen);
#- update ask_remove, ask_unselect too along with provided value.
#TODO
}
#- parallel install.
sub parallel_install {
my ($parallel, $urpm, $remove, $install, $upgrade) = @_;
foreach (keys %{$parallel->{nodes}}) {
my $sources = join ' ', map { "'$_'" } values %$install, values %$upgrade;
$urpm->{log}("parallel_ssh: scp $sources $_:$urpm->{cachedir}/rpms");
system "scp $sources $_:$urpm->{cachedir}/rpms";
}
my %bad_nodes;
foreach my $node (keys %{$parallel->{nodes}}) {
local (*F, $_);
$urpm->{log}("parallel_ssh: ssh $node urpmi --no-locales --test --no-verify-rpm --auto --synthesis $parallel->{synthesis} $parallel->{line}");
open F, "ssh $node urpmi --no-locales --test --no-verify-rpm --auto --synthesis $parallel->{synthesis} $parallel->{line} |";
while ($_ = <F>) {
$bad_nodes{$node} .= $_;
/Installation failed/ and $bad_nodes{$node} = '';
/Installation is possible/ and delete $bad_nodes{$node}, last;
}
close F;
}
foreach (keys %{$parallel->{nodes}}) {
exists $bad_nodes{$_} or next;
$urpm->{error}(_("Installation failed on node %s", $_) . ":\n" . $bad_nodes{$_});
}
%bad_nodes and return;
#- continue installation on each nodes.
foreach my $node (keys %{$parallel->{nodes}}) {
$urpm->{log}("parallel_ssh: ssh $node urpmi --no-locales --no-verify-rpm --auto --synthesis $parallel->{synthesis} $parallel->{line}");
system "ssh $node urpmi --no-locales --no-verify-rpm --auto --synthesis $parallel->{synthesis} $parallel->{line}";
}
1;
}
#- allow bootstrap from urpmi code directly (namespace is urpm).
package urpm;
sub handle_parallel_options {
my ($urpm, $options) = @_;
my ($id, @nodes) = split ':', $options;
if ($id =~ /^ssh(?:\(([^\)]*)\))?$/) {
my %nodes; @nodes{@nodes} = undef;
return bless {
media => $1,
nodes => \%nodes,
}, "urpm::parallel_ssh";
}
return undef;
}
1;
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