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# ex:ts=8 sw=4:
# $OpenBSD: Cache.pm,v 1.8 2022/05/12 04:41:43 espie Exp $
#
# Copyright (c) 2022 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
# supplementary glue to add support for reading the update.db locate(1)
# database in quirks
package OpenBSD::PackageRepository::Cache;
sub new
{
my ($class, $state, $setlist) = @_;
return undef unless -f OpenBSD::Paths->updateinfodb;
my $o = bless {
raw_data => {},
stems => {},
state => $state }, $class;
$o->prime_update_info_cache($state, $setlist);
return $o;
}
sub pipe_locate
{
my ($self, @params) = @_;
unshift(@params, OpenBSD::Paths->locate,
'-d', OpenBSD::Paths->updateinfodb, '--');
my $state = $self->{state};
$state->errsay("Running #1", join(' ', @params))
if $state->defines("CACHING_VERBOSE");
return @params;
}
sub prime_update_info_cache
{
my ($self, $state, $setlist) = @_;
my $progress = $state->progress;
my $uncached = {};
my $found = {};
# figure out a list of names to precache
# okay, so basically instead of hitting locate once for each
# package on the distant repository, we precache all the stems
# we are asking to update/install
# this is based on the assumption that most names are "regular"
# and we won't cache too little or too much
for my $set (@{$setlist}) {
for my $h ($set->older, $set->hints) {
next if $h->{update_found};
my $name = $h->pkgname;
my $stem = OpenBSD::PackageName::splitstem($name);
next if $stem =~ m/^\.libs\d*\-/;
next if $stem =~ m/^partial\-/;
$stem =~ s/\%.*//; # zap branch info
$stem =~ s/\-\-.*//; # and set flavors
$self->{stems}{$stem} = 1;
}
}
# TODO actually ask quirks to extend the stemlist !
my @list = sort keys %{$self->{stems}};
return if @list == 0;
my $total = scalar @list;
$progress->set_header(
$state->f("Reading update info for installed packages",
$total));
my $done = 0;
my $oldname = "";
open my $fh, "-|", $self->pipe_locate(map { "$_-[0-9]*"} @list)
or $state->fatal("Can't run locate: #1", $!);
while (<$fh>) {
if (m/^(.*?)\:(.*)/) {
my ($pkgname, $value) = ($1, $2);
$found->{OpenBSD::PackageName::splitstem($pkgname)} = 1;
$self->{raw_data}{$pkgname} //= '';
$self->{raw_data}{$pkgname} .= "$value\n";
if ($value =~ m/\@option\s+always-update/) {
$uncached->{$pkgname} = 1;
}
if ($pkgname ne $oldname) {
$oldname = $pkgname;
$done++;
}
$progress->show($done, $total);
}
}
close($fh);
for my $pkgname (keys %$uncached) {
delete $self->{raw_data}{$pkgname}
}
return unless $state->defines("CACHING_VERBOSE");
for my $k (@list) {
if (!defined $found->{$k}) {
$state->say("No cache entry for #1", $k);
}
}
}
sub get_cached_info
{
my ($self, $name) = @_;
my $state = $self->{state};
my $content;
if (exists $self->{raw_data}{$name}) {
$content = $self->{raw_data}{$name};
} else {
my $stem = OpenBSD::PackageName::splitstem($name);
if (exists $self->{stems}{$stem}) {
$state->say("Negative caching for #1", $name)
if $state->defines("CACHING_VERBOSE");
return undef;
}
$content = '';
open my $fh, "-|", $self->pipe_locate($name.":*") or die $!;
while (<$fh>) {
if (m/\@option\s+always-update/) {
return undef;
}
if (m/^.*?\:(.*)/) {
$content .= $1."\n";
} else {
return undef;
}
}
close ($fh);
}
if ($content eq '') {
$state->say("Cache miss for #1", $name)
if $state->defines("CACHING_VERBOSE");
return undef;
}
open my $fh2, "<", \$content;
return OpenBSD::PackingList->read($fh2);
}
1;
|
