Ravada.pm 11.8 KB
Newer Older
1
2
3
4
5
package Ravada;

use warnings;
use strict;

6
use Data::Dumper;
7
use DBIx::Connector;
Francesc Guasch's avatar
Francesc Guasch committed
8
use JSON::XS;
9
10
11
use Moose;
use YAML;

12
use Ravada::Request;
13
use Ravada::VM::KVM;
14
use Ravada::VM::LXC;
15

Francesc Guasch's avatar
Francesc Guasch committed
16
17
18
19
20
21
22
23
24
25
26
27
=head1 NAME

Ravada - Remove Virtual Desktop Manager

=head1 SYNOPSIS

  use Ravada;

  my $ravada = Ravada->new()

=cut

28
29
30
31
32
33
34

our $FILE_CONFIG = "/etc/ravada.conf";

###########################################################################

our $CONNECTOR;
our $CONFIG = {};
35
36
our $DEBUG;

37
38
39
40
41
42
43
44
45
46


has 'vm' => (
          is => 'ro'
        ,isa => 'ArrayRef'
       ,lazy => 1
     , builder => '_create_vm'
);

has 'connector' => (
47
48
49
50
51
52
        is => 'rw'
);

has 'config' => (
    is => 'ro'
    ,isa => 'Str'
53
54
);

Francesc Guasch's avatar
Francesc Guasch committed
55
56
57
58
59
60
61
=head2 BUILD

Internal constructor

=cut


62
63
sub BUILD {
    my $self = shift;
64
    if ($self->config()) {
65
        _init_config($self->config);
66
    } else {
Francesc Guasch's avatar
Francesc Guasch committed
67
        _init_config($FILE_CONFIG) if -e $FILE_CONFIG;
68
    }
69

Francesc Guasch's avatar
Francesc Guasch committed
70
71
72
73
    if ( $self->connector ) {
        $CONNECTOR = $self->connector 
    } else {
        $CONNECTOR = $self->_connect_dbh();
74
        $self->connector($CONNECTOR);
Francesc Guasch's avatar
Francesc Guasch committed
75
    }
76

77
78
79
80
81
82
}

sub _connect_dbh {
    my $driver= ($CONFIG->{db}->{driver} or 'mysql');;
    my $db_user = ($CONFIG->{db}->{user} or getpwnam($>));;
    my $db_pass = ($CONFIG->{db}->{password} or undef);
Francesc Guasch's avatar
Francesc Guasch committed
83
84
    my $db = ( $CONFIG->{db}->{db} or 'ravada' );
    return DBIx::Connector->new("DBI:$driver:$db"
85
86
87
88
89
90
91
92
93
94
95
                        ,$db_user,$db_pass,{RaiseError => 1
                        , PrintError=> 0 });

}

sub _init_config {
    my $file = shift;
    $CONFIG = YAML::LoadFile($file);
    _connect_dbh();
}

96
sub _create_vm_kvm {
97
    my $self = shift;
98

99
100
101
102
    my $cmd_qemu_img = `which qemu-img`;
    chomp $cmd_qemu_img;

    return(undef,"ERROR: Missing qemu-img") if !$cmd_qemu_img;
103
104

    my $vm_kvm;
105

106
107
    eval { $vm_kvm = Ravada::VM::KVM->new( connector => ( $self->connector or $CONNECTOR )) };
    my $err_kvm = $@;
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126

    my ($internal_vm , $storage);
    eval {
        $internal_vm = $vm_kvm->vm;
        $internal_vm->list_all_domains();

        $storage = $vm_kvm->dir_img();
    };
    $vm_kvm = undef if $@ || !$internal_vm || !$storage;
    return ($vm_kvm,$@);
}

sub _create_vm {
    my $self = shift;

    my @vms = ();

    my ($vm_kvm, $err_kvm) = $self->_create_vm_kvm();

127
128
129
130
131
132
133
134
135
136
137
138
    push @vms,($vm_kvm) if $vm_kvm;

    my $vm_lxc;
    eval { $vm_lxc = Ravada::VM::LXC->new( connector => ( $self->connector or $CONNECTOR )) };
    push @vms,($vm_lxc) if $vm_lxc;
    my $err_lxc = $@;

    if (!@vms) {
        die "No VMs found: $err_lxc\n$err_kvm\n";
    }
    return \@vms;

139
140
}

Francesc Guasch's avatar
Francesc Guasch committed
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
=head2 create_domain

Creates a new domain based on an ISO image or another domain.

  my $domain = $ravada->create_domain( 
         name => $name
    , id_iso => 1
  );


  my $domain = $ravada->create_domain( 
         name => $name
    , id_base => 3
  );


=cut


160
sub create_domain {
161
162
    my $self = shift;

163
164
165
166
167
168
    my %args = @_;

    my $backend = $args{backend};
    delete $args{backend};

    my $vm = $self->vm->[0];
Francesc Guasch's avatar
Francesc Guasch committed
169
    $vm = $self->search_vm($backend)   if $backend;
170
171

    return $vm->create_domain(@_);
172
173
}

Francesc Guasch's avatar
Francesc Guasch committed
174
175
176
177
178
179
180
181
=head2 remove_domain

Removes a domain

  $ravada->remove_domain($name);

=cut

182
183
184
185
sub remove_domain {
    my $self = shift;
    my $name = shift or confess "Missing domain name";

186
    my $domain = $self->search_domain($name, 1)
187
188
189
190
        or confess "ERROR: I can't find domain $name";
    $domain->remove();
}

Francesc Guasch's avatar
Francesc Guasch committed
191
192
193
194
195
196
=head2 search_domain

  my $domain = $ravada->search_domain($name);

=cut

197
198
199
sub search_domain {
    my $self = shift;
    my $name = shift;
200
    my $import = shift;
201
202

    for my $vm (@{$self->vm}) {
Francesc Guasch's avatar
Francesc Guasch committed
203
        my $domain = $vm->search_domain($name, $import);
204
        next if !$domain;
205
        next if !$domain->_select_domain_db && !$import;
206
207
208
        my $id;
        eval { $id = $domain->id };
        # TODO import the domain in the database with an _insert_db or something
209
        warn $@ if $@;
210
        return $domain if $id || $import;
211
    }
212
    return;
213
}
214

Francesc Guasch's avatar
Francesc Guasch committed
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
=head2 search_domain_by_id

  my $domain = $ravada->search_domain_by_id($id);

=cut

sub search_domain_by_id {
    my $self = shift;
      my $id = shift;

    for my $vm (@{$self->vm}) {
        my $domain = $vm->search_domain_by_id($id);
        return $domain if $domain;
    }
}


232
233
=head2 list_domains

Francesc Guasch's avatar
Francesc Guasch committed
234
List all created domains
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250

  my @list = $ravada->list_domains();

=cut

sub list_domains {
    my $self = shift;
    my @domains;
    for my $vm (@{$self->vm}) {
        for my $domain ($vm->list_domains) {
            push @domains,($domain);
        }
    }
    return @domains;
}

251
252
253
254
255
256
257
258
259
260
261
262
263
=head2 list_domains_data

List all domains in raw format. Return a list of id => { name , id , is_active , is_base }

   my $list = $ravada->list_domains_data();

   $c->render(json => $list);

=cut

sub list_domains_data {
    my $self = shift;
    my @domains;
264
265
266
267
268
269
    my $sth = $CONNECTOR->dbh->prepare(
        "SELECT * FROM domains ORDER BY name"
    );
    $sth->execute;
    while (my $row = $sth->fetchrow_hashref) {
        push @domains,($row);
270
    }
271
    $sth->finish;
272
    return \@domains;
273
274
}

275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
# sub list_domains_data {
#     my $self = shift;
#     my @domains;
#     for my $domain ($self->list_domains()) {
#         eval { $domain->id };
#         warn $@ if $@;
#         next if $@;
#         push @domains, {                id => $domain->id 
#                                     , name => $domain->name
#                                   ,is_base => $domain->is_base
#                                 ,is_active => $domain->is_active
                               
#                            }
#     }
#     return \@domains;
# }

292

Francesc Guasch's avatar
Francesc Guasch committed
293
294
295
296
297
298
299
300
301
302
303
304
305
306
=head2 list_bases

List all base domains

  my @list = $ravada->list_domains();


=cut

sub list_bases {
    my $self = shift;
    my @domains;
    for my $vm (@{$self->vm}) {
        for my $domain ($vm->list_domains) {
307
308
309
            eval { $domain->id };
            warn $@ if $@;
            next    if $@;
Francesc Guasch's avatar
Francesc Guasch committed
310
311
312
313
314
315
            push @domains,($domain) if $domain->is_base;
        }
    }
    return @domains;
}

316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
=head2 list_bases_data

List information about the bases

=cut

sub list_bases_data {
    my $self = shift;
    my @data;
    for ($self->list_bases ) {
        push @data,{ id => $_->id , name => $_->name };
    }
    return \@data;
}

Francesc Guasch's avatar
Francesc Guasch committed
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
=head2 list_images

List all ISO images

=cut

sub list_images {
    my $self = shift;
    my @domains;
    my $sth = $CONNECTOR->dbh->prepare(
        "SELECT * FROM iso_images ORDER BY name"
    );
    $sth->execute;
    while (my $row = $sth->fetchrow_hashref) {
        push @domains,($row);
    }
    $sth->finish;
    return @domains;
}

351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
=head2 list_images_data

List information about the images

=cut

sub list_images_data {
    my $self = shift;
    my @data;
    for ($self->list_images ) {
        push @data,{ id => $_->{id} , name => $_->{name} };
    }
    return \@data;
}

Francesc Guasch's avatar
Francesc Guasch committed
366

fv3rdugo's avatar
fv3rdugo committed
367
368
369
370
sub list_images_lxc {
    my $self = shift;
    my @domains;
    my $sth = $CONNECTOR->dbh->prepare(
371
        "SELECT * FROM lxc_templates ORDER BY name"
fv3rdugo's avatar
fv3rdugo committed
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
    );
    $sth->execute;
    while (my $row = $sth->fetchrow_hashref) {
        push @domains,($row);
    }
    $sth->finish;
    return @domains;
}

=head2 list_images_data

List information about the images

=cut

sub list_images_data_lxc {
    my $self = shift;
    my @data;
    for ($self->list_images_lxc ) {
        push @data,{ id => $_->{id} , name => $_->{name} };
    }
    return \@data;
}



Francesc Guasch's avatar
Francesc Guasch committed
398
399
400
401
=head2 remove_volume

  $ravada->remove_volume($file);

Francesc Guasch's avatar
Francesc Guasch committed
402

Francesc Guasch's avatar
Francesc Guasch committed
403
404
=cut

405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
sub remove_volume {
    my $self = shift;

    my $file = shift;
    my ($name) = $file =~ m{.*/(.*)};

    my $removed = 0;
    for my $vm (@{$self->vm}) {
        my $vol = $vm->search_volume($name);
        next if !$vol;

        $vol->delete();
        $removed++;
    }
    if (!$removed && -e $file ) {
        warn "volume $file not found. removing file $file.\n";
        unlink $file or die "$! $file";
    }

}
425

Francesc Guasch's avatar
Francesc Guasch committed
426
427
428
429
430
431
432
433
=head2 process_requests

This is run in the ravada backend. It processes the commands requested by the fronted

  $ravada->process_requests();

=cut

434
435
436
437
438
439
sub process_requests {
    my $self = shift;

    my $sth = $CONNECTOR->dbh->prepare("SELECT id FROM requests WHERE status='requested'");
    $sth->execute;
    while (my ($id)= $sth->fetchrow) {
Francesc Guasch's avatar
Francesc Guasch committed
440
        my $req = Ravada::Request->open($id);
441
        warn "executing request ".$req." ".Dumper($req) if $DEBUG;
Francesc Guasch's avatar
Francesc Guasch committed
442
        $self->_execute($req);
443
        warn $req->status() if $DEBUG;
444
445
446
447
    }
    $sth->finish;
}

Francesc Guasch's avatar
Francesc Guasch committed
448
449
450
451
452
453
454
455
=head2 list_requests

Returns a list of ruquests : ( id , domain_name, status, error )

=cut

sub list_requests {
    my $self = shift;
joansp's avatar
joansp committed
456
    my $sth = $CONNECTOR->dbh->prepare("SELECT id, command, args, date_changed, status, error "
Francesc Guasch's avatar
Francesc Guasch committed
457
        ." FROM requests "
joansp's avatar
joansp committed
458
        ." ORDER BY date_changed DESC LIMIT 4"
Francesc Guasch's avatar
Francesc Guasch committed
459
460
461
    );
    $sth->execute;
    my @reqs;
joansp's avatar
joansp committed
462
463
    my ($id, $command, $j_args, $date_changed, $status, $error);
    $sth->bind_columns(\($id, $command, $j_args, $date_changed, $status, $error));
Francesc Guasch's avatar
Francesc Guasch committed
464
465
466
467

    while ( $sth->fetch) {
        my $args = decode_json($j_args) if $j_args;

joansp's avatar
joansp committed
468
        push @reqs,{ id => $id,  command => $command, date_changed => $date_changed, status => $status, error => $error , name => $args->{name}};
Francesc Guasch's avatar
Francesc Guasch committed
469
470
471
472
473
    }
    $sth->finish;
    return \@reqs;
}

474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
=head2 list_vm_types

Returnsa list ofthe types of Virtual Machines available on this system

=cut

sub list_vm_types {
    my $self = shift;
    
    my %type;
    for my $vm (@{$self->vm}) {
            my ($name) = ref($vm) =~ /.*::(.*)/;
            $type{$name}++;
    }
    return sort keys %type;
}

491
492
493
494
sub _execute {
    my $self = shift;
    my $request = shift;

Francesc Guasch's avatar
Francesc Guasch committed
495
496
497
498
499
500
501
502
503
504
505
506
507
    my $sub = $self->_req_method($request->command);

    die "Unknown command ".$request->command
        if !$sub;

    return $sub->($self,$request);

}

sub _cmd_create {
    my $self = shift;
    my $request = shift;

508
509
510
511
    $request->status('creating domain');
    my $domain;
    eval {$domain = $self->create_domain(%{$request->args}) };

Francesc Guasch's avatar
Francesc Guasch committed
512
513
514
515
516
517
518
519
520
521
522
523
524
    $request->status('done');
    $request->error($@);

}

sub _cmd_remove {
    my $self = shift;
    my $request = shift;

    $request->status('working');
    eval { $self->remove_domain($request->args('name')) };
    $request->status('done');
    $request->error($@);
Francesc Guasch's avatar
Francesc Guasch committed
525

526
}
Francesc Guasch's avatar
Francesc Guasch committed
527

Francesc Guasch's avatar
Francesc Guasch committed
528
529
530
531
532
533
534
535
536
537
538
sub _cmd_start {
    my $self = shift;
    my $request = shift;

    $request->status('working');
    my $name = $request->args('name');
    eval { 
        my $domain = $self->search_domain($name);
        die "Unknown domain '$name'\n" if !$domain;
        $domain->start();
    };
539

Francesc Guasch's avatar
Francesc Guasch committed
540
541
542
543
544
    $request->status('done');
    $request->error($@);

}

Francesc Guasch's avatar
Francesc Guasch committed
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
sub _cmd_prepare_base {
    my $self = shift;
    my $request = shift;

    $request->status('working');
    my $name = $request->args('name');
    eval { 
        my $domain = $self->search_domain($name);
        die "Unknown domain '$name'\n" if !$domain;
        $domain->prepare_base();
    };
    $request->status('done');
    $request->error($@);

}


Francesc Guasch's avatar
Francesc Guasch committed
562
563
564
565
566
567
sub _cmd_shutdown {
    my $self = shift;
    my $request = shift;

    $request->status('working');
    my $name = $request->args('name');
568
569
    my $timeout = ($request->args('timeout') or 60);
    my $domain;
Francesc Guasch's avatar
Francesc Guasch committed
570
    eval { 
571
        $domain = $self->search_domain($name);
Francesc Guasch's avatar
Francesc Guasch committed
572
        die "Unknown domain '$name'\n" if !$domain;
573
        $domain->shutdown(timeout => $timeout);
Francesc Guasch's avatar
Francesc Guasch committed
574
575
576
577
578
579
580
    };
    $request->status('done');
    $request->error($@);

}


Francesc Guasch's avatar
Francesc Guasch committed
581
582
583
584
585
sub _req_method {
    my $self = shift;
    my  $cmd = shift;

    my %methods = (
Francesc Guasch's avatar
Francesc Guasch committed
586

Francesc Guasch's avatar
Francesc Guasch committed
587
588
589
          start => \&_cmd_start
        ,create => \&_cmd_create
        ,remove => \&_cmd_remove
Francesc Guasch's avatar
Francesc Guasch committed
590
      ,shutdown => \&_cmd_shutdown
Francesc Guasch's avatar
Francesc Guasch committed
591
  ,prepare_base => \&_cmd_prepare_base
Francesc Guasch's avatar
Francesc Guasch committed
592
593
594
595
    );
    return $methods{$cmd};
}

596
597
598
599
600
601
602
603
604
605
606
607
=head2 search_vm

Searches for a VM of a given type

  my $vm = $ravada->search_vm('kvm');

=cut

sub search_vm {
    my $self = shift;
    my $type = shift;

608
609
    confess "Missing VM type"   if !$type;

610
611
612
613
614
615
    my $class = 'Ravada::VM::'.uc($type);
    for my $vm (@{$self->vm}) {
        return $vm if ref($vm) eq $class;
    }
    return;
}
Francesc Guasch's avatar
Francesc Guasch committed
616

Francesc Guasch's avatar
Francesc Guasch committed
617
618
619
620
621
622
623
624
625
626
=head1 AUTHOR

Francesc Guasch-Ortiz	, frankie@telecos.upc.edu

=head1 SEE ALSO

Sys::Virt

=cut

627
1;