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package urpm::parallel; # $Id$
use urpm;
use urpm::util;
use urpm::msg;
sub configure {
my ($urpm, $alias) = @_;
my @parallel_options;
#- read parallel configuration
foreach (cat_("/etc/urpmi/parallel.cfg")) {
chomp; s/#.*$//; s/^\s*//; s/\s*$//;
/\s*([^:]*):(.*)/ or $urpm->{error}(N("unable to parse \"%s\" in file [%s]", $_, "/etc/urpmi/parallel.cfg")), next;
$1 eq $alias and push @parallel_options, $2;
}
#- if a configuration option has been found, use it; else fatal error.
my $parallel_handler;
if (@parallel_options) {
foreach my $dir (grep { -d $_ } map { "$_/urpm" } @INC) {
foreach my $pm (grep { -f $_ } glob("$dir/parallel*.pm")) {
#- load parallel modules
$urpm->{log}->(N("examining parallel handler in file [%s]", $pm));
# perl_checker: require urpm::parallel_ka_run
# perl_checker: require urpm::parallel_ssh
eval { require $pm; $parallel_handler = $urpm->handle_parallel_options(join("\n", @parallel_options)) };
$parallel_handler and last;
}
$parallel_handler and last;
}
}
if ($parallel_handler) {
if ($parallel_handler->{nodes}) {
$urpm->{log}->(N("found parallel handler for nodes: %s", join(', ', keys %{$parallel_handler->{nodes}})));
}
$urpm->{parallel_handler} = $parallel_handler;
} else {
$urpm->{fatal}(1, N("unable to use parallel option \"%s\"", $alias));
}
}
sub resolve_dependencies {
my ($urpm, $state, $requested, %options) = @_;
#- build the global synthesis file first.
my $file = "$urpm->{cachedir}/partial/parallel.cz";
unlink $file;
foreach (@{$urpm->{media}}) {
urpm::media::is_valid_medium($_) or next;
my $f = urpm::media::any_synthesis($urpm, $_);
system "cat '$f' >> '$file'";
}
#- let each node determine what is requested, according to handler given.
$urpm->{parallel_handler}->parallel_resolve_dependencies($file, $urpm, $state, $requested, %options);
}
#- remove packages from node as remembered according to resolving done.
sub remove {
my ($urpm, $remove, %options) = @_;
my $state = {};
my $callback = sub { $urpm->{fatal}(1, "internal distributed remove fatal error") };
$urpm->{parallel_handler}->parallel_find_remove($urpm, $state, $remove, %options,
callback_notfound => undef,
callback_fuzzy => $callback,
callback_base => $callback,
);
}
sub post_register_rpms {
my ($parallel, $urpm, @files) = @_;
#- keep trace of direct files.
$parallel->{line} .=
join(' ',
map { "'$_'" }
map { "$urpm->{cachedir}/rpms/" . basename($_) } @files);
}
sub find_remove_pre {
my ($urpm, $state, %options) = @_;
#- keep in mind if the previous selection is still active, it avoids
#- to re-start urpme --test on each node.
if ($options{find_packages_to_remove}) {
delete $state->{rejected};
delete $urpm->{error_remove};
'--test ';
} elsif (@{$urpm->{error_remove} || []}) {
undef, $urpm->{error_remove};
} elsif ($options{test}) {
#- no need to restart what has been started before.
undef, [ keys %{$state->{rejected}} ];
} else {
'--force ';
}
}
sub parse_urpme_output {
my ($urpm, $state, $node, $s, $notfound, $base_to_remove, $bad_nodes, %options) = @_;
$s =~ /^\s*$/ and return;
$s =~ /Checking to remove the following packages/ and return;
$s =~ /To satisfy dependencies, the following packages are going to be removed/
and $urpm->{fatal}(1, N("node %s has an old version of urpme, please upgrade", $node));
if ($s =~ /unknown packages?:? (.*)/) {
#- remember unknown packages from the node, because it should not be a fatal error
#- if other nodes have it.
$notfound->{$_} = undef foreach split ", ", $1;
} elsif ($s =~ /The following packages contain ([^:]*): (.*)/) {
$options{callback_fuzzy} && $options{callback_fuzzy}->($urpm, $1, split(" ", $2))
or delete($state->{rejected}), return 'stop_parse';
} elsif ($s =~ /removing package (.*) will break your system/) {
$base_to_remove->{$1} = undef;
} elsif ($s =~ /removing \S/) {
#- this is log for newer urpme, so do not try to remove removing...
} elsif ($s =~ /Remov(?:al|ing) failed/) {
$bad_nodes->{$node} = [];
} else {
if (exists $bad_nodes->{$node}) {
$s =~ /^\s+(.+)/ and push @{$bad_nodes->{$node}}, $1;
} else {
$s =~ s/\s*\(.*//; #- remove reason (too complex to handle, needs to be removed)
$state->{rejected}{$s}{removed} = 1;
$state->{rejected}{$s}{nodes}{$node} = undef;
}
}
return;
}
sub parse_urpmq_output {
my ($urpm, $state, $node, $s, $cont, $chosen, %options) = @_;
if (my ($action, $what) = $s =~ /^\@([^\@]*)\@(.*)/) {
if ($action eq 'removing') {
$state->{rejected}{$what}{removed} = 1;
$state->{rejected}{$what}{nodes}{$node} = undef;
}
} elsif ($s =~ /\|/) {
#- distant urpmq returned a choices, check if it has already been chosen
#- or continue iteration to make sure no more choices are left.
$$cont ||= 1; #- invalid transitory state (still choices is strange here if next sentence is not executed).
unless (grep { exists $chosen->{$_} } split /\|/, $s) {
my $choice = $options{callback_choices}->($urpm, undef, $state, [ map { $urpm->search($_) } split /\|/, $s ]);
if ($choice) {
$chosen->{scalar $choice->fullname} = $choice;
#- it has not yet been chosen so need to ask user.
$$cont = 2;
} else {
#- no choices resolved, so forget it (no choices means no choices at all).
$$cont = 0;
}
}
} else {
my $pkg = $urpm->search($s) or return; #TODO
$state->{selected}{$pkg->id}{$node} = $s;
}
}
#- compute command line of urpm? tools.
sub simple_resolve_dependencies {
my ($parallel, $urpm, $state, $requested, %options) = @_;
my @pkgs;
foreach (keys %$requested) {
if (/\|/) {
#- taken from URPM::Resolve to filter out choices, not complete though.
my $packages = $urpm->find_candidate_packages($_);
foreach (values %$packages) {
my ($best_requested, $best);
foreach (@$_) {
exists $state->{selected}{$_->id} and $best_requested = $_, last;
if ($best_requested) {
if ($best_requested && $best_requested != $_) {
$_->compare_pkg($best_requested) > 0 and $best_requested = $_;
} else {
$best_requested = $_;
}
} elsif ($best && $best != $_) {
$_->compare_pkg($best) > 0 and $best = $_;
} else {
$best = $_;
}
}
$_ = $best_requested || $best;
}
#- simplified choice resolution.
my $choice = $options{callback_choices}->($urpm, undef, $state, [ values %$packages ]);
if ($choice) {
push @pkgs, $choice;
}
} else {
my $pkg = $urpm->{depslist}[$_] or next;
push @pkgs, $pkg;
}
}
#- local packages have already been added.
@pkgs = grep { !$urpm->{source}{$_->id} } @pkgs;
$parallel->{line} .
($options{auto_select} ? ' --auto-select' : '') .
($options{keep} ? ' --keep' : '') .
join(' ', map { scalar $_->fullname } @pkgs);
}
1;
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