1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
package urpm::mirrors;
# $Id: $
use strict;
use urpm::util;
use urpm::msg;
use urpm::download;
#- $medium fields used: mirrorlist, with-dir
#- side-effects: $medium->{url}
#- + those of _pick_one ($urpm->{mirrors_cache})
sub try {
my ($urpm, $medium, $try) = @_;
for (my $nb = 1; $nb < $urpm->{options}{'max-round-robin-tries'}; $nb++) {
my $url = _pick_one($urpm, $medium->{mirrorlist}, $nb == 1, '') or return;
$urpm->{info}(N("trying again with mirror %s", $url)) if $nb > 1;
$medium->{url} = _add__with_dir($url, $medium->{'with-dir'});
$try->() and return 1;
black_list($urpm, $medium->{mirrorlist}, $url);
}
0;
}
#- side-effects: none
sub _add__with_dir {
my ($url, $with_dir) = @_;
reduce_pathname($url . ($with_dir ? "/$with_dir" : ''));
}
#- side-effects: $medium->{url}
#- + those of _pick_one ($urpm->{mirrors_cache})
sub pick_one {
my ($urpm, $medium, $allow_cache_update) = @_;
my $url = _pick_one($urpm, $medium->{mirrorlist}, 'must_succeed', $allow_cache_update);
$medium->{url} = _add__with_dir($url, $medium->{'with-dir'});
}
#- side-effects: $urpm->{mirrors_cache}
sub _pick_one {
my ($urpm, $mirrorlist, $must_succeed, $allow_cache_update) = @_;
my $cache = _cache($urpm, $mirrorlist);
if ($allow_cache_update && $cache->{time} &&
time() > $cache->{time} + 24*60*60 * $urpm->{options}{'days-between-mirrorlist-update'}) {
$urpm->{log}("not using outdated cached mirror list");
%$cache = ();
}
if (!$cache->{chosen}) {
if (!$cache->{list}) {
$cache->{list} = [ _list($urpm, $mirrorlist) ];
$cache->{time} = time();
}
$cache->{chosen} = $cache->{list}[0]{url} or do {
$must_succeed and $urpm->{fatal}(10, N("Could not find a mirror from mirrorlist %s", $mirrorlist));
return;
};
_save_cache($urpm);
}
if ($cache->{nb_uses}++) {
$urpm->{debug} and $urpm->{debug}("using mirror $cache->{chosen}");
} else {
$urpm->{log}("using mirror $cache->{chosen}");
}
$cache->{chosen};
}
#- side-effects: $urpm->{mirrors_cache}
sub black_list {
my ($urpm, $mirrorlist, $url) = @_;
my $cache = _cache($urpm, $mirrorlist);
@{$cache->{list}} = grep { $_->{url} ne $url } @{$cache->{list}};
delete $cache->{chosen};
}
#- side-effects: $urpm->{mirrors_cache}
sub _cache {
my ($urpm, $mirrorlist) = @_;
my $full_cache = $urpm->{mirrors_cache} ||= _load_cache($urpm);
$full_cache->{$mirrorlist} ||= {};
}
sub cache_file {
my ($urpm) = @_;
my $cache_file = "$urpm->{cachedir}/mirrors.cache";
}
sub _load_cache {
my ($urpm) = @_;
my $cache;
if (-e cache_file($urpm)) {
$urpm->{debug} and $urpm->{debug}("loading mirrors cache");
$cache = eval(cat_(cache_file($urpm)));
$@ and $urpm->{error}("failed to read " . cache_file($urpm) . ": $@");
$_->{nb_uses} = 0 foreach values %$cache;
}
$cache || {};
}
sub _save_cache {
my ($urpm) = @_;
require Data::Dumper;
my $s = Data::Dumper::Dumper($urpm->{mirrors_cache});
$s =~ s/.*?=//; # get rid of $VAR1 =
output_safe(cache_file($urpm), $s);
}
#- side-effects: none
sub _list {
my ($urpm, $mirrorlist) = @_;
# expand the variables
if ($mirrorlist eq '$MIRRORLIST') {
$mirrorlist = _MIRRORLIST();
} else {
require urpm::cfg;
$mirrorlist = urpm::cfg::expand_line($mirrorlist);
}
my @mirrors = _mirrors_filtered($urpm, $mirrorlist);
add_proximity_and_sort($urpm, \@mirrors);
@mirrors;
}
#- side-effects: $mirrors
sub add_proximity_and_sort {
my ($urpm, $mirrors) = @_;
my ($latitude, $longitude, $country_code);
require Time::ZoneInfo;
if (my $zone = Time::ZoneInfo->current_zone) {
if (my $zones = Time::ZoneInfo->new) {
if (($latitude, $longitude) = $zones->latitude_longitude_decimal($zone)) {
$country_code = $zones->country($zone);
$urpm->{log}(N("found geolocalisation %s %.2f %.2f from timezone %s", $country_code, $latitude, $longitude, $zone));
}
}
}
defined $latitude && defined $longitude or return;
foreach (@$mirrors) {
$_->{latitude} || $_->{longitude} or next;
my $PI = 3.14159265358979;
my $x = $latitude - $_->{latitude};
my $y = ($longitude - $_->{longitude}) * cos($_->{latitude} / 180 * $PI);
$_->{proximity} = sqrt($x * $x + $y * $y);
}
my ($best) = sort { $a->{proximity} <=> $b->{proximity} } @$mirrors;
foreach (@$mirrors) {
$_->{proximity_corrected} = $_->{proximity} * _random_correction();
$_->{proximity_corrected} *= _between_country_correction($country_code, $_->{country}) if $best;
$_->{proximity_corrected} *= _between_continent_correction($best->{continent}, $_->{continent}) if $best;
}
@$mirrors = sort { $a->{proximity_corrected} <=> $b->{proximity_corrected} } @$mirrors;
}
# add +/- 5% random
sub _random_correction() {
my $correction = 0.05;
1 + (rand() - 0.5) * $correction * 2;
}
sub _between_country_correction {
my ($here, $mirror) = @_;
$here && $mirror or return 1;
$here eq $mirror ? 0.5 : 1;
}
sub _between_continent_correction {
my ($here, $mirror) = @_;
$here && $mirror or return 1;
$here eq $mirror ? 0.5 : # favor same continent
$here eq 'SA' && $mirror eq 'NA' ? 0.9 : # favor going "South America" -> "North America"
1;
}
sub _mirrors_raw {
my ($urpm, $url) = @_;
$urpm->{log}(N("getting mirror list from %s", $url));
my @l = urpm::download::get_content($urpm, $url) or die "mirror list not found";
@l;
}
sub _mirrors_filtered {
my ($urpm, $mirrorlist) = @_;
grep {
$_->{type} eq 'distrib'; # type=updates seems to be history, and type=iso is not interesting here
} map { chomp; parse_LDAP_namespace_structure($_) } _mirrors_raw($urpm, $mirrorlist);
}
sub _MIRRORLIST() {
my $product_id = parse_LDAP_namespace_structure(cat_('/etc/product.id'));
_mandriva_mirrorlist($product_id);
}
sub _mandriva_mirrorlist {
my ($product_id, $o_arch) = @_;
#- contact the following URL to retrieve the list of mirrors.
#- http://wiki.mandriva.com/en/Product_id
my $product_type = lc($product_id->{type}); $product_id =~ s/\s//g;
my $arch = $o_arch || $product_id->{arch};
"http://api.mandriva.com/mirrors/$product_type.$product_id->{version}.$arch.list";
}
sub parse_LDAP_namespace_structure {
my ($s) = @_;
my %h = map { /(.*?)=(.*)/ ? ($1 => $2) : () } split(',', $s);
\%h;
}
1;
|
