1 files changed, 104 insertions, 0 deletions
diff --git a/urpm/parallel_ssh.pm b/urpm/parallel_ssh.pm
new file mode 100644
index 00000000..5d0c3ea3
--- /dev/null
+++ b/urpm/parallel_ssh.pm
@@ -0,0 +1,104 @@
+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";
+    }
+
+    foreach (keys %{$parallel->{nodes}}) {
+	$urpm->{log}("parallel_ssh: ssh $_ urpmi --auto --synthesis $parallel->{synthesis} $parallel->{line}");
+	system "ssh $_ urpmi --auto --synthesis $parallel->{synthesis} $parallel->{line}";
+    }
+}
+
+
+#- allow bootstrap from urpmi code directly (namespace is urpm).
+package urpm;
+sub handle_parallel_options {
+    my ($urpm, $options) = @_;
+    my ($id, @nodes) = split ':', $options;
+
+    if ($id eq 'ssh') {
+	my %nodes; @nodes{@nodes} = undef;
+
+	return bless {
+		      nodes   => \%nodes,
+		     }, "urpm::parallel_ssh";
+    }
+
+    return undef;
+}
+
+1;