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cache apt query in /var/lib/pve-manager/pkgupdates

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This commit is contained in:
Dietmar Maurer 2013-06-12 08:18:02 +02:00
parent 719467c67f
commit cd0bc36b6c
1 changed files with 26 additions and 0 deletions
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26
PVE/API2/APT.pm
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@ -2,6 +2,7 @@ package PVE::API2::APT;
use strict;
use warnings;
use File::stat ();
use PVE::Tools qw(extract_param);
use PVE::SafeSyslog;
@ -10,6 +11,7 @@ use PVE::Exception qw(raise_param_exc);
use PVE::RESTHandler;
use PVE::RPCEnvironment;
use JSON;
use PVE::JSONSchema qw(get_standard_option);
use AptPkg::Cache;
@ -115,6 +117,28 @@ __PACKAGE__->register_method({
code => sub {
my ($param) = @_;
# we try to cache results
my $pve_pkgstatus_fn = "/var/lib/pve-manager/pkgupdates";
if (my $st1 = File::stat::stat($pve_pkgstatus_fn)) {
my $st2 = File::stat::stat("/var/cache/apt/pkgcache.bin");
my $st3 = File::stat::stat("/var/lib/dpkg/status");
if ($st2->mtime < $st1->mtime && $st3->mtime < $st1->mtime) {
my $data;
eval {
my $jsonstr = PVE::Tools::file_get_contents($pve_pkgstatus_fn, 5*1024*1024);
$data = decode_json($jsonstr);
};
if (my $err = $@) {
warn "error readin cached package status in $pve_pkgstatus_fn\n";
# continue and overwrite cache with new content
} else {
return $data;
}
}
}
my $pkglist = [];
my $cache = &$get_apt_cache();
@ -134,6 +158,8 @@ __PACKAGE__->register_method({
}
}
PVE::Tools::file_set_contents($pve_pkgstatus_fn, encode_json($pkglist));
return $pkglist;
}});