summaryrefslogtreecommitdiffstats
path: root/urpm/parallel_ssh.pm
blob: 35b6e79a237474e2ff35c1a97168cdbf6e970c59 (plain)
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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
package urpm::parallel_ssh;

# $Id$

#- Copyright (C) 2002, 2003, 2004, 2005 MandrakeSoft SA
#- Copyright (C) 2005 Mandriva SA

use strict;
use urpm::util;
use urpm::msg;
use urpm::parallel;
use Time::HiRes qw(gettimeofday);

our @ISA = (); #- help perl_checker

(our $VERSION) = q($Revision$) =~ /(\d+)/;

sub _localhost { $_[0] eq 'localhost' }
sub _nolock    { &_localhost ? '--nolock ' : '' }
sub _ssh       { &_localhost ? '' : "ssh $_[0] " }
sub _host      { &_localhost ? '' : "$_[0]:" }

#- parallel copy
sub parallel_register_rpms {
    my ($parallel, $urpm, @files) = @_;

    foreach my $host (keys %{$parallel->{nodes}}) {
	$urpm->{log}("parallel_ssh: scp @files $host:$urpm->{cachedir}/rpms");
	if (_localhost($host)) {
	    my @f = grep { ! m!^$urpm->{cachedir}/rpms! } @files;
	    @f and system('cp', @f, "$urpm->{cachedir}/rpms");
	} else {
	    system('scp', @files, "$host:$urpm->{cachedir}/rpms");
	}
	$? == 0 or $urpm->{fatal}(1, N("scp failed on host %s (%d)", $host, $? >> 8));
    }

    urpm::parallel::post_register_rpms($parallel, $urpm, @files);
}

#- parallel find_packages_to_remove
sub parallel_find_remove {
    my ($parallel, $urpm, $state, $l, %options) = @_;
    my ($test, %bad_nodes, %base_to_remove, %notfound);

    #- 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};
	$test = '--test ';
    } else {
	@{$urpm->{error_remove} || []} and return @{$urpm->{error_remove}};
	#- no need to restart what has been started before.
	$options{test} and return keys %{$state->{rejected}};
	$test = '--force ';
    }

    #- now try an iteration of urpme.
    foreach my $node (keys %{$parallel->{nodes}}) {
	my $command = _ssh($node) . "urpme --no-locales --auto $test" . (join ' ', map { "'$_'" } @$l);
        $urpm->{log}("parallel_ssh: $command");
	open my $fh, "$command 2>&1 |"
	    or $urpm->{fatal}(1, "Can't fork ssh: $!");
	local $_;
	while (defined ($_ = <$fh>)) {
	    chomp;
	    /^\s*$/ and next;
	    /Checking to remove the following packages/ and next;
	    /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 (/unknown packages?:? (.*)/) {
		#- remember unknown packages from the node, because it should not be a fatal error
		#- if other nodes have it.
		@notfound{split ", ", $1} = ();
	    } elsif (/The following packages contain ([^:]*): (.*)/) {
		$options{callback_fuzzy} && $options{callback_fuzzy}->($urpm, $1, split(" ", $2))
		  or delete $state->{rejected}, last;
	    } elsif (/removing package (.*) will break your system/) {
		$base_to_remove{$1} = undef;
	    } elsif (/removing \S/) {
		#- this is log for newer urpme, so do not try to remove removing...
	    } elsif (/Remov(?:al|ing) failed/) {
		$bad_nodes{$node} = [];
	    } else {
		if (exists $bad_nodes{$node}) {
		    /^\s+(.*)/ and push @{$bad_nodes{$node}}, $1;
		} else {
		    s/\s*\(.*//; #- remove reason (too complex to handle, needs to be removed)
		    $state->{rejected}{$_}{removed} = 1;
		    $state->{rejected}{$_}{nodes}{$node} = undef;
		}
	    }
	}
	close $fh;
    }

    #- check base, which has been delayed until there.
    if ($options{callback_base} && %base_to_remove) {
	$options{callback_base}->($urpm, keys %base_to_remove) or return ();
    }

    #- build error list contains all the error returned by each node.
    $urpm->{error_remove} = [ map {
	my $msg = N("on node %s", $_);
	map { "$msg, $_" } @{$bad_nodes{$_}};
    } keys %bad_nodes ];

    #- if at least one node has the package, it should be seen as unknown...
    delete @notfound{map { /^(.*)-[^-]*-[^-]*$/ } keys %{$state->{rejected}}};
    if (%notfound) {
	$options{callback_notfound} && $options{callback_notfound}->($urpm, keys %notfound)
	  or delete $state->{rejected};
    }

    keys %{$state->{rejected}};
}

#- parallel resolve_dependencies
sub parallel_resolve_dependencies {
    my ($parallel, $synthesis, $urpm, $state, $requested, %options) = @_;

    #- first propagate the synthesis file to all machines
    foreach (grep { !_localhost($_) } keys %{$parallel->{nodes}}) {
	$urpm->{ui_msg}("parallel_ssh: scp -q $synthesis $_:$synthesis", N("Propagating synthesis to %s...", $_));
	system "scp", "-q", $synthesis, _host($_) . $synthesis;
	$? == 0 or $urpm->{fatal}(1, N("scp failed on host %s (%d)", $_, $? >> 8));
    }
    $parallel->{synthesis} = $synthesis;

    #- compute command line of urpm? tools.
    my $line = $parallel->{line} . ($options{auto_select} ? ' --auto-select' : '') . ($options{keep} ? ' --keep' : '');
    foreach (keys %$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) {
		$urpm->{source}{$choice->id} and next; #- local packages have already been added.
		$line .= ' ' . $choice->fullname;
	    }
	} else {
	    my $pkg = $urpm->{depslist}[$_] or next;
	    $urpm->{source}{$pkg->id} and next; #- local packages have already been added.
	    $line .= ' ' . $pkg->fullname;
	}
    }

    #- execute urpmq to determine packages to install.
    my ($cont, %chosen);
    local $_;
    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}}) {
	    my $command = _ssh($node) . "urpmq " . _nolock($node) . "--synthesis $synthesis -fduc $line " . join(' ', keys %chosen);
	    $urpm->{ui_msg}("parallel_ssh: $command", N("Resolving dependencies on %s...", $node));
	    open my $fh, "$command |"
		or $urpm->{fatal}(1, "Can't fork ssh: $!");
	    while (defined ($_ = <$fh>)) {
		chomp;
		if (my ($action, $what) = /^\@([^\@]*)\@(.*)/) {
		    if ($action eq 'removing') {
			$state->{rejected}{$what}{removed} = 1;
			$state->{rejected}{$what}{nodes}{$node} = undef;
		    }
		} elsif (/\|/) {
		    #- 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 /\|/, $_) {
			my $choice = $options{callback_choices}->($urpm, undef, $state, [ map { $urpm->search($_) } split /\|/, $_ ]);
			if ($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 = $urpm->search($_) or next; #TODO
		    $state->{selected}{$pkg->id}{$node} = $_;
		}
	    }
	    close $fh or $urpm->{fatal}(1, N("host %s does not have a good version of urpmi (%d)", $node, $? >> 8));
	}
	#- 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} = join(' ', $line, keys %chosen);
}

#- parallel install.
sub parallel_install {
    my ($parallel, $urpm, undef, $install, $upgrade, %options) = @_;

    foreach (keys %{$parallel->{nodes}}) {
	my @sources = (values %$install, values %$upgrade);
	$urpm->{ui_msg}("parallel_ssh: scp @sources $_:$urpm->{cachedir}/rpms", N("Distributing files to %s...", $_));
	if (_localhost($_)) {
	    my @f = grep { ! m!^$urpm->{cachedir}/rpms! } @sources;
	    @f and system 'cp' => @f, "$urpm->{cachedir}/rpms";
	} else {
	    system 'scp' => @sources, "$_:$urpm->{cachedir}/rpms";
	}
	$? == 0 or $urpm->{fatal}(1, N("scp failed on host %s (%d)", $_, $? >> 8));
    }

    my %bad_nodes;
    foreach my $node (keys %{$parallel->{nodes}}) {
	local $_;
	my $command = _ssh($node) . "urpmi --pre-clean --no-locales --test --no-verify-rpm --auto " . _nolock($node) . "--synthesis $parallel->{synthesis} $parallel->{line}";
	$urpm->{ui_msg}("parallel_ssh: $command", N("Verifying if install is possible on %s...", $node));
	open my $fh, "$command |"
	    or $urpm->{fatal}(1, "Can't fork ssh: $!");
	while ($_ = <$fh>) {
	    $bad_nodes{$node} .= $_;
	    /Installation failed/ and $bad_nodes{$node} = '';
	    /Installation is possible/ and delete $bad_nodes{$node}, last;
	}
	close $fh;
    }
    foreach (keys %{$parallel->{nodes}}) {
	exists $bad_nodes{$_} or next;
	$urpm->{error}(N("Installation failed on node %s", $_) . ":\n" . $bad_nodes{$_});
    }
    %bad_nodes and return;

    if ($options{test}) {
	$urpm->{error}(N("Installation is possible"));
	1;
    } else {
	my $line = $parallel->{line} . ($options{excludepath} ? " --excludepath $options{excludepath}" : "");
	#- continue installation on each node
	foreach my $node (keys %{$parallel->{nodes}}) {
	    my $command = _ssh($node) . "urpmi --no-locales --no-verify-rpm --auto " . _nolock($node) . "--synthesis $parallel->{synthesis} $line";
	    $urpm->{ui_msg}("parallel_ssh: $command", N("Performing install on %s...", $node));
	    $urpm->{ui}{progress}->(0) if ref $urpm->{ui}{progress};
	    open my $fh, "$command |"
		or $urpm->{fatal}(1, "Can't fork ssh: $!");
            local $/ = \1;
            my $log;
            my $last_time;
	    local $_;
            while (<$fh>) {
                print;
                $log .= $_;
                /\n/ and $log = '';
                if (my ($msg, $progress) = $log =~ /^\s*(\S+)\s+(#+)/) {
                    if ($urpm->{ui} && (gettimeofday() - $last_time > 0.15 || length($progress) == 45)) {
                        $urpm->{ui_msg}->($msg =~ /\d+:(\S+)/ ? N("Installing %s on %s...", $1, $node)
                                                               : N("Preparing install on %s...", $node));
                        $urpm->{ui}{progress}->(length($progress)/45) if ref $urpm->{ui}{progress};
                        $last_time = gettimeofday();
                    }
                }
            }
            close $fh;
	}
    }
}

#- allow to bootstrap from urpmi code directly (namespace is urpm).

package urpm;

no warnings 'redefine';

sub handle_parallel_options {
    my (undef, $options) = @_;
    my ($id, @nodes) = split /:/, $options;

    if ($id =~ /^ssh(?:\(([^\)]*)\))?$/) {
	my %nodes; @nodes{@nodes} = undef;
	return bless {
	    media   => $1,
	    nodes   => \%nodes,
	}, "urpm::parallel_ssh";
    }
    return undef;
}

1;