Experiment.pm.in 67.8 KB
Newer Older
1 2 3
#!/usr/bin/perl -wT
#
# EMULAB-COPYRIGHT
4
# Copyright (c) 2005, 2006, 2007 University of Utah and the Flux Group.
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
# All rights reserved.
#
package Experiment;

use strict;
use Exporter;
use vars qw(@ISA @EXPORT);

@ISA    = "Exporter";
@EXPORT = qw ( );

# Must come after package declaration!
use lib '@prefix@/lib';
use libdb;
use libtestbed;
20
use User;
21 22
use Project;
use Group;
23
use Node;
24 25
use English;
use Data::Dumper;
26
use File::Basename;
27
use overload ('""' => 'Stringify');
28
use libtblog_simple;
29

30 31 32 33
use vars qw($EXPT_PRELOAD $EXPT_START $EXPT_SWAPIN
	    $EXPT_SWAPOUT $EXPT_SWAPMOD
	    @EXPORT_OK);

34 35 36
# Configure variables
my $TB		= "@prefix@";
my $BOSSNODE    = "@BOSSNODE@";
37
my $CONTROL	= "@USERNODE@";
38 39
my $TBOPS       = "@TBOPSEMAIL@";
my $PROJROOT    = "@PROJROOT_DIR@";
40
my $EVENTSYS    = @EVENTSYS@;
41
my $STAMPS      = @STAMPS@;
42 43 44 45 46 47 48 49
my $TEVC	= "$TB/bin/tevc";
my $DBCONTROL   = "$TB/sbin/opsdb_control";
my $RSYNC	= "/usr/local/bin/rsync";
my $MKEXPDIR    = "$TB/libexec/mkexpdir";
my $TBPRERUN    = "$TB/bin/tbprerun";
my $TBSWAP      = "$TB/bin/tbswap";
my $TBREPORT    = "$TB/bin/tbreport";
my $TBEND       = "$TB/bin/tbend";
50
my $DU          = "/usr/bin/du";
51
my $MD5         = "/sbin/md5";
52

53 54 55 56 57 58 59 60 61
# Swap Actions
$EXPT_PRELOAD		= TBDB_STATS_PRELOAD();
$EXPT_START		= TBDB_STATS_START();
$EXPT_SWAPIN		= TBDB_STATS_SWAPIN();
$EXPT_SWAPOUT		= TBDB_STATS_SWAPOUT();
$EXPT_SWAPMOD		= TBDB_STATS_SWAPMODIFY();

# For stats gathering code.
my $EXPT_STARTCLOCK;
62
my $EXPT_RESOURCESHOSED = 0;
63 64 65 66 67

# Why, why, why?
@EXPORT_OK = qw($EXPT_PRELOAD $EXPT_START
		$EXPT_SWAPIN $EXPT_SWAPOUT $EXPT_SWAPMOD);

68 69 70 71 72 73 74 75 76 77 78 79 80 81 82
# Hmm, this is silly. 
if ($EVENTSYS) {
    require event;
    import event;
}

# Cache of instances to avoid regenerating them.
my %experiments   = ();
my $debug	  = 0;

# Little helper and debug function.
sub mysystem($)
{
    my ($command) = @_;

83 84 85 86
    my $cwd;
    chomp($cwd = `pwd`);

    print STDERR "Running '$command' in $cwd\n"
87 88 89 90 91 92 93
	if ($debug);
    return system($command);
}

#
# Lookup an experiment and create a class instance to return.
#
94
sub Lookup($$;$)
95
{
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131
    my ($class, $arg1, $arg2) = @_;
    my $idx;

    #
    # A single arg is either an index or a "pid,eid" or "pid/eid" string.
    #
    if (!defined($arg2)) {
	if ($arg1 =~ /^(\d*)$/) {
	    $idx = $1;
	}
	elsif ($arg1 =~ /^([-\w]*),([-\w]*)$/ ||
	       $arg1 =~ /^([-\w]*)\/([-\w]*)$/) {
	    $arg1 = $1;
	    $arg2 = $2;
	}
	else {
	    return undef;
	}
    }
    elsif (! (($arg1 =~ /^[-\w]*$/) && ($arg2 =~ /^[-\w]*$/))) {
	return undef;
    }

    #
    # Two args means lookup by pid,eid instead of exptidx.
    #
    if (defined($arg2)) {
	my $result =
	    DBQueryWarn("select idx from experiments ".
			"where pid='$arg1' and eid='$arg2'");

	return undef
	    if (! $result || !$result->numrows);

	($idx) = $result->fetchrow_array();
    }
132 133

    # Look in cache first
134 135
    return $experiments{"$idx"}
        if (exists($experiments{"$idx"}));
136 137
    
    my $query_result =
138 139 140
	DBQueryWarn("select e.*,i.parent_guid,t.guid from experiments as e ".
		    "left join experiment_templates as t on ".
		    "     t.exptidx=e.idx ".
141 142 143
		    "left join experiment_template_instances as i on ".
		    "     i.exptidx=e.idx ".
		    "where e.idx='$idx'");
144 145 146 147 148 149

    return undef
	if (!$query_result || !$query_result->numrows);

    my $self         = {};
    $self->{'EXPT'}  = $query_result->fetchrow_hashref();
150 151
    # An Instance?
    $self->{'ISINSTANCE'} = defined($self->{'EXPT'}->{'parent_guid'});
152 153
    # The experiment underlying a template.
    $self->{'ISTEMPLATE'} = defined($self->{'EXPT'}->{'guid'});
154 155 156 157 158 159 160 161 162

    $query_result =
	DBQueryWarn("select * from experiment_stats where exptidx='$idx'");
	
    return undef
	if (!$query_result || !$query_result->numrows);
    
    $self->{'STATS'} = $query_result->fetchrow_hashref();
    
163 164 165 166 167 168
    my $rsrcidx = $self->{'STATS'}->{'rsrcidx'};

    $query_result =
	DBQueryWarn("select * from experiment_resources ".
		    "where idx='$rsrcidx'");
	
Leigh B. Stoller's avatar
Leigh B. Stoller committed
169
    return undef
170 171 172
	if (!$query_result || !$query_result->numrows);
    
    $self->{'RSRC'} = $query_result->fetchrow_hashref();
173 174 175 176

    bless($self, $class);
    
    # Add to cache. 
177
    $experiments{"$idx"} = $self;
178 179 180 181
    
    return $self;
}
# accessors
182 183 184
sub field($$)     { return ((! ref($_[0])) ? -1 : $_[0]->{'EXPT'}->{$_[1]}); }
sub stats($$)     { return ((! ref($_[0])) ? -1 : $_[0]->{'STATS'}->{$_[1]});}
sub resources($$) { return ((! ref($_[0])) ? -1 : $_[0]->{'RSRC'}->{$_[1]}); }
185

186 187 188 189 190 191 192 193 194 195 196
sub pid($)		{ return field($_[0], 'pid'); }
sub gid($)		{ return field($_[0], 'gid'); }
sub pid_idx($)		{ return field($_[0], 'pid_idx'); }
sub gid_idx($)		{ return field($_[0], 'gid_idx'); }
sub eid($)		{ return field($_[0], 'eid'); }
sub idx($)		{ return field($_[0], 'idx'); }
sub path($)		{ return field($_[0], 'path'); }
sub state($)		{ return field($_[0], 'state'); }
sub batchstate($)	{ return field($_[0], 'batchstate'); }
sub batchmode($)	{ return field($_[0], 'batchmode'); }
sub rsrcidx($)		{ return stats($_[0], 'rsrcidx'); }
197
sub lastrsrc($)		{ return stats($_[0], 'lastrsrc'); }
198 199 200 201 202 203 204 205 206 207 208 209 210
sub creator($)		{ return field($_[0], 'expt_head_uid');}
sub canceled($)		{ return field($_[0], 'canceled'); }
sub locked($)		{ return field($_[0], 'expt_locked'); }
sub elabinelab($)	{ return field($_[0], 'elab_in_elab');}
sub elabinelab_eid($)   { return field($_[0], 'elabinelab_eid');}
sub elabinelab_exptidx($){return field($_[0], 'elabinelab_exptidx');}
sub lockdown($)		{ return field($_[0], 'lockdown'); }
sub created($)		{ return field($_[0], 'expt_created'); }
sub swapper($)		{ return field($_[0], 'expt_swap_uid');}
sub swappable($)	{ return field($_[0], 'swappable');}
sub idleswap($)		{ return field($_[0], 'idleswap');}
sub autoswap($)		{ return field($_[0], 'autoswap');}
sub noswap_reason($)	{ return field($_[0], 'noswap_reason');}
211 212 213 214
sub noidleswap_reason($){ return field($_[0], 'noidleswap_reason');}
sub idleswap_timeout($) { return field($_[0], 'idleswap_timeout');}
sub autoswap_timeout($) { return field($_[0], 'autoswap_timeout');}
sub prerender_pid($)    { return field($_[0], 'prerender_pid');}
215 216
sub dpdb($)		{ return field($_[0], 'dpdb');}
sub dpdbname($)         { return field($_[0], 'dpdbname');}
217
sub dpdbpassword($)     { return field($_[0], 'dpdbpassword');}
Leigh B. Stoller's avatar
Leigh B. Stoller committed
218
sub instance_idx($)     { return field($_[0], 'instance_idx'); }
219 220
sub creator_idx($)      { return field($_[0], 'creator_idx');}
sub swapper_idx($)      { return field($_[0], 'swapper_idx');}
221 222 223
sub use_ipassign($)     { return field($_[0], 'use_ipassign');}
sub ipassign_args($)    { return field($_[0], 'ipassign_args');}
sub security_level($)   { return field($_[0], 'security_level');}
224 225
sub linktest_pid($)     { return field($_[0], 'linktest_pid');}
sub linktest_level($)   { return field($_[0], 'linktest_level');}
226
sub archive_idx($)	{ return stats($_[0], 'archive_idx'); }
227 228
sub swapin_count($)	{ return stats($_[0], 'swapin_count'); }
sub destroyed($)	{ return stats($_[0], 'destroyed'); }
229
sub archive_tag($)	{ return resources($_[0], 'archive_tag'); }
230 231 232 233
sub thumbnail($)	{ return resources($_[0], 'thumbnail'); }
sub swapin_time($)	{ return resources($_[0], 'swapin_time'); }
sub swapout_time($)	{ return resources($_[0], 'swapout_time'); }
sub lastidx($)	        { return resources($_[0], 'lastidx'); }
234
sub input_data_idx($)   { return resources($_[0], 'input_data_idx'); }
235 236

#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
237
# Lookup an experiment given an experiment index.
238 239 240 241 242
#
sub LookupByIndex($$)
{
    my ($class, $exptidx) = @_;

243
    return Experiment->Lookup($exptidx);
244 245
}

246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267
#
# All active experiments.
#
sub AllActive($)
{
    my ($class) = @_;
    my @result  = ();
    
    my $query_result =
	DBQueryFatal("select idx from experiments where state='active'");

    while (my ($idx) = $query_result->fetchrow_array()) {
	my $experiment = Experiment->Lookup($idx);

	if (!defined($experiment)) {
	    print STDERR "Experiment::AllActive: No object for $idx!\n";
	}
	push(@result, $experiment);
    }
    return @result;
}

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
#
# All experiments for a particular user. Class method.
#
sub UserExperimentList($$$)
{
    my ($class, $user, $plist) = @_;
    my @result  = ();
    my $uid_idx = $user->uid_idx();
    
    my $query_result =
	DBQueryWarn("select idx from experiments ".
		    "where creator_idx='$uid_idx' or swapper_idx='$uid_idx'");
    return -1
	if (! $query_result);

    while (my ($idx) = $query_result->fetchrow_array()) {
	my $experiment = Experiment->Lookup($idx);

	if (!defined($experiment)) {
	    print STDERR "Experiment::UserExperimentList: ".
		"No object for $idx!\n";
	    return -1;
	}
	push(@result, $experiment);
    }
    @$plist = @result;
    return 0;
}

297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312
# This is needed a lot.
sub unix_gid($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $group = $self->GetGroup();
    return -1
	if (!defined($group));

    return $group->unix_gid();
}

313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328
#
# LockTables simple locks the given tables, and then refreshes the
# experiment instance (thereby getting the data from the DB after
# the tables are locked).
#
sub LockTables($;$)
{
    my ($self, $spec) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    $spec  = "experiments write"
	if (!defined($spec));
    $spec .= ", experiment_stats read";
329
    $spec .= ", experiment_resources read";
330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348
    
    DBQueryWarn("lock tables $spec")
	or return -1;
	
    return $self->Refresh();
}
sub UnLockTables($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    DBQueryWarn("unlock tables")
	or return -1;
    return 0;
}

349 350 351 352 353 354
#
# Create a new experiment. This installs the new record in the DB,
# and returns an instance. There is some bookkeeping along the way.
#
sub Create($$$$)
{
355
    my ($class, $group, $eid, $argref) = @_;
356
    my $exptidx;
Leigh B. Stoller's avatar
Leigh B. Stoller committed
357
    my $now = time();
358 359

    return undef
360 361 362 363 364 365
	if (ref($class) || !ref($group));

    my $pid     = $group->pid();
    my $gid     = $group->gid();
    my $pid_idx = $group->pid_idx();
    my $gid_idx = $group->gid_idx();
366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457

    #
    # The pid/eid has to be unique, so lock the table for the check/insert.
    #
    DBQueryWarn("lock tables experiments write, ".
		"            experiment_stats write, ".
		"            experiment_resources write, ".
		"            emulab_indicies write, ".
		"            testbed_stats read")
	or return undef;

    my $query_result =
	DBQueryWarn("select pid,eid from experiments ".
		    "where eid='$eid' and pid='$pid'");

    if ($query_result->numrows) {
	DBQueryWarn("unlock tables");
	tberror("Experiment $eid in project $pid already exists!");
	return undef;
    }

    #
    # Grab the next highest index to use. We used to use an auto_increment
    # field in the table, but if the DB is ever "dropped" and recreated,
    # it will reuse indicies that are crossed referenced in the other two
    # tables.
    #
    $query_result = 
	DBQueryWarn("select idx from emulab_indicies ".
		    "where name='next_exptidx'");

    if (!$query_result) {
	DBQueryWarn("unlock tables");
	return undef;
    }

    # Seed with a proper value.
    if (! $query_result->num_rows) {
	$query_result =
	    DBQueryWarn("select MAX(exptidx) + 1 from experiment_stats");

	if (!$query_result) {
	    DBQueryWarn("unlock tables");
	    return undef;
	}
	($exptidx) = $query_result->fetchrow_array();

	# First ever experiment!
	$exptidx = 1
	    if (!defined($exptidx));

	if (! DBQueryWarn("insert into emulab_indicies (name, idx) ".
			  "values ('next_exptidx', $exptidx)")) {
	    DBQueryWarn("unlock tables");
	    return undef;
	}

    }
    else {
	($exptidx) = $query_result->fetchrow_array();
    }
    my $nextidx = $exptidx + 1;
    
    if (! DBQueryWarn("update emulab_indicies set idx='$nextidx' ".
		      "where name='next_exptidx'")) {
	DBQueryWarn("unlock tables");
	return undef;
    }

    #
    # Lets be really sure!
    #
    foreach my $table ("experiments", "experiment_stats",
		       "experiment_resources", "testbed_stats") {

	my $slot = (($table eq "experiments") ? "idx" : "exptidx");
	
	$query_result =
	    DBQueryWarn("select * from $table where ${slot}=$exptidx");

	if (! $query_result) {
	    DBQueryWarn("unlock tables");
	    return undef;
	}
	if ($query_result->numrows) {
	    DBQueryWarn("unlock tables");
	    tberror("Experiment index $exptidx exists in $table; ".
		    "this is bad!");
	    return undef;
	}
    }

458 459 460 461 462 463 464
    # And a UUID (universally unique identifier).
    my $uuid = NewUUID();
    if (!defined($uuid)) {
	print "*** WARNING: Could not generate a UUID!\n";
	return undef;
    }

465 466 467 468 469 470 471 472 473 474 475 476
    #
    # Insert the record. This reserves the pid/eid for us. 
    #
    # Some fields special cause of quoting.
    #
    my $description = DBQuoteSpecial($argref->{'expt_name'});
    delete($argref->{'expt_name'});
    my $noswap_reason = DBQuoteSpecial($argref->{'noswap_reason'});
    delete($argref->{'noswap_reason'});
    my $noidleswap_reason = DBQuoteSpecial($argref->{'noidleswap_reason'});
    delete($argref->{'noidleswap_reason'});

Leigh B. Stoller's avatar
Leigh B. Stoller committed
477 478 479 480
    # we override this below
    delete($argref->{'idx'})
	if (exists($argref->{'idx'}));

481 482 483 484
    my $query = "insert into experiments set ".
	join(",", map("$_='" . $argref->{$_} . "'", keys(%{$argref})));

    # Append the rest
Leigh B. Stoller's avatar
Leigh B. Stoller committed
485
    $query .= ",expt_created=FROM_UNIXTIME('$now')";
486
    $query .= ",expt_locked=now(),pid='$pid',eid='$eid',eid_uuid='$uuid'";
487
    $query .= ",pid_idx='$pid_idx',gid='$gid',gid_idx='$gid_idx'";
488 489 490
    $query .= ",expt_name=$description";
    $query .= ",noswap_reason=$noswap_reason";
    $query .= ",noidleswap_reason=$noidleswap_reason";
Leigh B. Stoller's avatar
Leigh B. Stoller committed
491
    $query .= ",idx=$exptidx";
492 493 494 495 496 497 498

    if (! DBQueryWarn($query)) {
	DBQueryWarn("unlock tables");
	tberror("Error inserting experiment record for $pid/$eid!");	
	return undef;
    }

499 500 501 502
    my $creator_uid = $argref->{'expt_head_uid'};
    my $creator_idx = $argref->{'creator_idx'};
    my $batchmode   = $argref->{'batchmode'};

503 504 505 506
    #
    # Create an experiment_resources record for the above record.
    #
    $query_result =
507 508 509
	DBQueryWarn("insert into experiment_resources ".
		    "(tstamp, exptidx, uid_idx) ".
		    "values (FROM_UNIXTIME('$now'), $exptidx, $creator_idx)");
510 511 512 513 514 515 516

    if (!$query_result) {
	DBQueryWarn("delete from experiments where pid='$pid' and eid='$eid'");
	DBQueryWarn("unlock tables");
	tberror("Error inserting experiment resources record for $pid/$eid!");
	return undef;
    }
517
    my $rsrcidx     = $query_result->insertid;
518
    
519 520 521 522
    #
    # Now create an experiment_stats record to match.
    #
    if (! DBQueryWarn("insert into experiment_stats ".
523
		      "(eid, pid, creator, creator_idx, gid, created, ".
524
		      " batch, exptidx, rsrcidx, pid_idx, gid_idx, eid_uuid) ".
525 526
		      "values('$eid', '$pid', '$creator_uid', '$creator_idx',".
		      "       '$gid', FROM_UNIXTIME('$now'), ".
527
		      "        $batchmode, $exptidx, $rsrcidx, ".
528
		      "        $pid_idx, $gid_idx, '$uuid')")) {
529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560
	DBQueryWarn("delete from experiments where pid='$pid' and eid='$eid'");
	DBQueryWarn("delete from experiment_resources where idx=$rsrcidx");
	DBQueryWarn("unlock tables");
	tberror("Error inserting experiment stats record for $pid/$eid!");
	return undef;
    }

    #
    # Safe to unlock; all tables consistent.
    #
    if (! DBQueryWarn("unlock tables")) {
	DBQueryWarn("delete from experiments where pid='$pid' and eid='$eid'");
	DBQueryWarn("delete from experiment_resources where idx=$rsrcidx");
	DBQueryWarn("delete from experiment_stats where exptidx=$exptidx");
	tberror("Error unlocking tables!");
	return undef
    }

    return Experiment->Lookup($pid, $eid);
}

#
# Delete experiment. Optional purge argument says to remove all trace
# (typically, the stats are kept).
#
sub Delete($;$)
{
    my ($self, $purge) = @_;

    return -1
	if (! ref($self));

561 562 563
    my $pid     = $self->pid();
    my $eid     = $self->eid();
    my $exptidx = $self->idx();
564 565
    my $workdir = $self->WorkDir();
    my $userdir = $self->UserDir();
566 567 568 569

    $purge = 0
	if (!defined($purge));

570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601
    #
    # Try to remove experiment directory. We allow for it not being there
    # cause we often run the tb programs directly. We also allow for not
    # having permission, in the case that an admin type is running this,
    # in which case it won't be allowed cause of directory permissions. Thats
    # okay since admin types should rarely end experiments in other projects.
    #
    print "Removing experiment directories ... \n";
    if (defined($userdir) && system("/bin/rm -rf $userdir")) {
	print "*** WARNING: Not able to remove $userdir\n";
	print "             Someone will need to do this by hand.\n";
	# NFS errors usually the result. Sometimes its cause there is
	# someone in the directory, so its being held open.
        libtestbed::SENDMAIL($TBOPS,
			     "Experiment::Delete: Could not remove directory",
			     "Could not remove $userdir.\n".
			     "Someone will need to do this by hand.\n");
    }
    if (system("/bin/rm -rf $workdir")) {
	print "*** WARNING: Not able to remove $workdir\n";
	print "             Someone will need to do this by hand.\n";
    }
    # Yuck.
    if ($pid ne $self->gid()) {
	my $eidlink = "$PROJROOT/$pid/exp/$eid";
	unlink($eidlink)
	    if (-l $eidlink);
    }
    libArchive::TBDeleteExperimentArchive($pid, $eid);

    DBQueryWarn("DELETE from experiments ".
		"WHERE eid='$eid' and pid='$pid'");
602

603 604 605 606 607 608 609 610 611
    #
    # Mark experiment destroyed. This is a backup to End() below.
    #
    if (! defined($self->destroyed())) {
	DBQueryWarn("update experiment_stats set ".
		    "   destroyed=now() ".
		    "where exptidx=$exptidx");
	$self->Refresh();
    }
612
    return 0
613 614 615
	if (! $purge);
    
    #
616
    # Now we can clean up the stats and resource records. 
617 618
    #
    my $rsrcidx = $self->rsrcidx();
619 620 621 622 623 624 625

    $self->DeleteInputFiles();

    DBQueryWarn("DELETE from experiment_pmapping ".
		"WHERE rsrcidx=$rsrcidx")
	if (defined($rsrcidx) && $rsrcidx);

626
    DBQueryWarn("DELETE from experiment_resources ".
627
		"WHERE idx=$rsrcidx")
Leigh B. Stoller's avatar
Leigh B. Stoller committed
628
	if (defined($rsrcidx) && $rsrcidx);
629

630 631 632 633 634 635 636 637 638 639
    DBQueryWarn("DELETE from testbed_stats ".
		"WHERE exptidx=$exptidx");

    # This must be last cause it provides the unique exptidx above.
    DBQueryWarn("DELETE from experiment_stats ".
		"WHERE eid='$eid' and pid='$pid' and exptidx=$exptidx");

    return 0;
}

640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780
#
# Add an input file to the template. The point of this is to reduce
# duplication by taking an md5 of the input file, and sharing that
# record/file.
# 
sub AddInputFile($$;$)
{
    my ($self, $inputfile, $isnsfile) = @_;
    my $input_data_idx;
    my $isnew = 0;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    $isnsfile = 0
	if (! defined($isnsfile));

    return -1
	if (! -r $inputfile);

    my $data_string = `cat $inputfile`;
    return -1
	if ($?);

    my $exptidx  = $self->idx();
    my $rsrcidx  = $self->rsrcidx();

    if ($data_string) {
	# As you can see, we md5 the raw data.
	$data_string = DBQuoteSpecial($data_string);
	if (length($data_string) >= DBLIMIT_NSFILESIZE()) {
	    tberror("Input file is too big (> " . DBLIMIT_NSFILESIZE() . ")!");
	    return -1;
	}

	#
	# Grab an MD5 of the file to see if we already have a copy of it.
	# Avoids needless duplication.
	#
	my $md5 = `$MD5 -q $inputfile`;
	chomp($md5);

	DBQueryWarn("lock tables experiment_input_data write, ".
		    "            experiment_inputs write, ".
		    "            experiment_resources write")
	    or return -1;

	my $query_result =
	    DBQueryWarn("select idx from experiment_input_data ".
			"where md5='$md5'");

	if (!$query_result) {
	    DBQueryWarn("unlock tables");
	    return -1;
	}

	if ($query_result->numrows) {
	    ($input_data_idx) = $query_result->fetchrow_array();
	    $isnew = 0;
	}
	else {
	    $query_result =
		DBQueryWarn("insert into experiment_input_data ".
			    "(idx, md5, input) ".
			    "values (NULL, '$md5', $data_string)");
	    
	    if (!$query_result) {
		DBQueryWarn("unlock tables");
		return -1;
	    }
	    $input_data_idx = $query_result->insertid;
	    $isnew = 1;
	}
	if (! DBQueryWarn("insert into experiment_inputs ".
			  " (rsrcidx, exptidx, input_data_idx) values ".
			  " ($rsrcidx, $exptidx, '$input_data_idx')")) {
	    DBQueryWarn("delete from experiment_input_data ".
			"where idx='$input_data_idx'")
		if ($isnew);
	    DBQueryWarn("unlock tables");
	    return -1;
	}
	if ($isnsfile &&
	    $self->TableUpdate("experiment_resources",
			       "input_data_idx='$input_data_idx'") != 0) {
	    DBQueryWarn("unlock tables");
	    return -1;
	}
	DBQueryWarn("unlock tables");
    }
    return 0;
}

#
# Delete the input files, but only if not in use.
#
sub DeleteInputFiles($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $rsrcidx = $self->rsrcidx();
    my $nsidx   = $self->input_data_idx();

    DBQueryWarn("lock tables experiment_input_data write, ".
		"            experiment_resources write, ".
		"            experiment_inputs write")
	or return -1;

    #
    # Get all input files for this rsrc record.
    #
    my $query_result =
	DBQueryWarn("select input_data_idx from experiment_inputs ".
		    "where rsrcidx='$rsrcidx'");
    goto bad
	if (! $query_result);
    goto done
	if (! $query_result->numrows);

    while (my ($input_data_idx) = $query_result->fetchrow_array()) {
	#
	# Delete but only if not in use.
	#
	my $query_result =
	    DBQueryWarn("select count(rsrcidx) from experiment_inputs ".
			"where input_data_idx='$input_data_idx' and ".
			"      rsrcidx!='$rsrcidx'");
	goto bad
	    if (! $query_result);

	DBQueryWarn("delete from experiment_inputs ".
		    "where input_data_idx='$input_data_idx'")
	    or goto bad;

	if (defined($nsidx) && $nsidx == $input_data_idx) {
	    DBQueryWarn("update experiment_resources set input_data_idx=NULL ".
Leigh B. Stoller's avatar
Leigh B. Stoller committed
781
			"where idx='$rsrcidx'")
782 783
		or goto bad;
	}
784 785 786 787 788 789
	next
	    if ($query_result->numrows);

	DBQueryWarn("delete from experiment_input_data ".
		    "where idx='$input_data_idx'")
	    or goto bad;
790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821
    }
  done:
    DBQueryWarn("unlock tables");
    return 0;

  bad:
    DBQueryWarn("unlock tables");
    return 1;
}

#
# Grab an input file.
#
sub GetInputFile($$$)
{
    my ($self, $idx, $pref) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $query_result =
	DBQueryWarn("select input from experiment_input_data ".
		    "where idx='$idx'");
    return -1
	if (! $query_result || !$query_result->numrows);

    my ($nsfile) = $query_result->fetchrow_array();
    $$pref = $nsfile;
    return 0;
}

822 823 824 825 826 827 828 829 830 831
#
# Refresh a class instance by reloading from the DB.
#
sub Refresh($)
{
    my ($self) = @_;

    return -1
	if (! ref($self));

832
    my $idx = $self->idx();
833

834
    my $query_result =
Leigh B. Stoller's avatar
Leigh B. Stoller committed
835
	DBQueryWarn("select * from experiments where idx=$idx");
836 837 838 839

    return -1
	if (!$query_result || !$query_result->numrows);

840
    $self->{'EXPT'}       = $query_result->fetchrow_hashref();
Leigh B. Stoller's avatar
Leigh B. Stoller committed
841 842
    $self->{'ISINSTANCE'} = undef;
    $self->{'ISTEMPLATE'} = undef;
843 844 845 846 847 848 849 850 851

    $query_result =
	DBQueryWarn("select * from experiment_stats where exptidx='$idx'");
	
    return -1
	if (!$query_result || !$query_result->numrows);
    
    $self->{'STATS'} = $query_result->fetchrow_hashref();

852 853 854 855 856 857 858 859 860 861
    my $rsrcidx = $self->rsrcidx();

    $query_result =
	DBQueryWarn("select * from experiment_resources ".
		    "where idx='$rsrcidx'");
	
    return -1
	if (!$query_result || !$query_result->numrows);
    
    $self->{'RSRC'} = $query_result->fetchrow_hashref();
862 863 864
    return 0;
}

Leigh B. Stoller's avatar
Leigh B. Stoller committed
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889
#
# Perform some updates ...
#
sub Update($$)
{
    my ($self, $argref) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    my $query = "update experiments set ".
	join(",", map("$_='" . $argref->{$_} . "'", keys(%{$argref})));

    $query .= " where pid='$pid' and eid='$eid'";

    return -1
	if (! DBQueryWarn($query));

    return Refresh($self);
}

890 891 892 893 894 895 896 897 898 899 900 901 902
#
# Stringify for output.
#
sub Stringify($)
{
    my ($self) = @_;
    
    my $pid   = $self->pid();
    my $eid   = $self->eid();

    return "[Experiment: $pid/$eid]";
}

903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957
#
# Generic function to look up some table values given a set of desired
# fields and some conditions. Pretty simple, not widely useful, but it
# helps to avoid spreading queries around then we need to. 
#
sub TableLookUp($$$;$)
{
    my ($self, $table, $fields, $conditions) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));
    
    my $exptidx = $self->idx();

    if (defined($conditions) && "$conditions" ne "") {
	$conditions = "and ($conditions)";
    }
    else {
	$conditions = "";
    }

    return DBQueryWarn("select distinct $fields from $table ".
		       "where exptidx='$exptidx' $conditions");
}

#
# Ditto for update.
#
sub TableUpdate($$$;$)
{
    my ($self, $table, $sets, $conditions) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    if (ref($sets) eq "HASH") {
	$sets = join(",", map("$_='" . $sets->{$_} . "'", keys(%{$sets})));
    }
    my $exptidx = $self->idx();

    if (defined($conditions) && "$conditions" ne "") {
	$conditions = "and ($conditions)";
    }
    else {
	$conditions = "";
    }

    return 0
	if (DBQueryWarn("update $table set $sets ".
			"where exptidx='$exptidx' $conditions"));
    return -1;
}

958
#
959 960
# Check permissions. Allow for either uid or a user ref until all code
# updated.
961 962 963
#
sub AccessCheck($$$)
{
964
    my ($self, $user, $access_type) = @_;
965 966

    # Must be a real reference. 
Leigh B. Stoller's avatar
Leigh B. Stoller committed
967
    return 0
968 969
	if (! ref($self));

970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997
    if ($access_type < TB_EXPT_MIN ||
	$access_type > TB_EXPT_MAX) {
	die("*** Invalid access type: $access_type!");
    }

    # Admins do whatever they want.
    return 1
	if ($user->IsAdmin());

    my $group = $self->GetGroup();
    return 0
	if (!defined($group));
    my $project = $self->GetProject();
    return 0
	if (!defined($project));

    #
    # An experiment may be destroyed by the experiment creator or the
    # project/group leader.
    #
    my $mintrust;
    
    if ($access_type == TB_EXPT_READINFO) {
	$mintrust = PROJMEMBERTRUST_USER;
    }
    else {
	$mintrust = PROJMEMBERTRUST_LOCALROOT;
    }
998

999 1000 1001 1002 1003 1004 1005
    #
    # Either proper permission in the group, or group_root in the project.
    # This lets group_roots muck with other people's experiments, including
    # those in groups they do not belong to.
    #
    return TBMinTrust($group->Trust($user), $mintrust) ||
	TBMinTrust($project->Trust($user), PROJMEMBERTRUST_GROUPROOT);
1006 1007
}

1008
#
Leigh B. Stoller's avatar
Leigh B. Stoller committed
1009 1010 1011 1012
# Create the directory structure. A template_mode experiment is the one
# that is created for the template wrapper, not one created for an
# instance of the experiment. The path changes slightly, although that
# happens down in the mkexpdir script.
1013 1014 1015 1016 1017 1018 1019 1020 1021
#
sub CreateDirectory($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

1022
    my $idx = $self->idx();
1023

1024
    mysystem("$MKEXPDIR $idx");
1025 1026 1027 1028 1029 1030
    return -1
	if ($?);
    # mkexpdir sets the path in the DB. 
    return Refresh($self)
}

1031 1032 1033 1034 1035 1036 1037 1038
#
# Load the project object for an experiment.
#
sub GetProject($)
{
    my ($self) = @_;

    # Must be a real reference. 
1039
    return undef
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058
	if (! ref($self));

    my $project = Project->Lookup($self->pid_idx());
    
    if (! defined($project)) {
	print("*** WARNING: Could not lookup project object for $self!", 1);
	return undef;
    }
    return $project;
}

#
# Load the group object for an experiment.
#
sub GetGroup($)
{
    my ($self) = @_;

    # Must be a real reference. 
1059
    return undef
1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070
	if (! ref($self));

    my $group = Group->Lookup($self->gid_idx());
    
    if (! defined($group)) {
	print("*** WARNING: Could not lookup group object for $self!\n");
	return undef;
    }
    return $group;
}

1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121
#
# Return the user and work directories. The workdir in on boss and where
# scripts chdir to when they run. The userdir is across NFS on ops, and
# where files are copied to. 
#
sub WorkDir($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    return TBDB_EXPT_WORKDIR() . "/${pid}/${eid}";
}
sub UserDir($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    return $self->path();
}

# Event/Web key filenames.
sub EventKeyPath($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    return UserDir($self) . "/tbdata/eventkey"; 
}
sub WebKeyPath($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    return UserDir($self) . "/tbdata/webkey"; 
}

1122 1123 1124
#
# Add an environment variable.
#
1125
sub AddEnvVariable($$$;$)
1126
{
1127
    my ($self, $name, $value, $index) = @_;
1128 1129 1130 1131 1132 1133 1134

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();
1135
    my $exptidx = $self->idx();
1136

1137 1138 1139 1140 1141 1142 1143
    if (defined($value)) {
	$value = DBQuoteSpecial($value);
    }
    else {
	$value = "''";
    }

1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161
    #
    # Look to see if the variable exists, since a replace will actually
    # create a new row cause there is an auto_increment in the table that
    # is used to maintain order of the variables as specified in the NS file.
    #
    my $query_result =
	DBQueryWarn("select idx from virt_user_environment ".
		    "where name='$name' and pid='$pid' and eid='$eid'");

    return -1
	if (!$query_result);

    if ($query_result->numrows) {
	my $idx = (defined($index) ? $index :
		   ($query_result->fetchrow_array())[0]);
	    
	DBQueryWarn("replace into virt_user_environment set ".
		    "   name='$name', value=$value, idx=$idx, ".
1162
		    "   exptidx='$exptidx', pid='$pid', eid='$eid'")
1163 1164 1165 1166 1167
	    or return -1;
    }
    else {
	DBQueryWarn("insert into virt_user_environment set ".
		    "   name='$name', value=$value, idx=NULL, ".
1168
		    "   exptidx='$exptidx', pid='$pid', eid='$eid'")
1169 1170
	    or return -1;
    }
1171
    
1172 1173 1174
    return 0;
}

1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212
#
# Write the environment strings into a little script in the user directory.
#
sub WriteEnvVariables($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    my $query_result =
	DBQueryWarn("select name,value from virt_user_environment ".
		    "where  pid='$pid' and eid='$eid' order by idx");
    return -1
	if (!defined($query_result));

    my $userdir = $self->UserDir();
    my $envfile = "$userdir/tbdata/environment";

    if (!open(FP, "> $envfile")) {
	print "Could not open $envfile for writing: $!\n";
	return -1;
    }
    while (my ($name,$value) = $query_result->fetchrow_array()) {
	print FP "${name}=\"$value\"\n";
    }
    if (! close(FP)) {
	print "Could not close $envfile: $!\n";
	return -1;
    }
    
    return 0;
}

1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251
#
# Experiment locking and state changes.
#
sub Unlock($;$)
{
    my ($self, $newstate) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();
    my $sclause = (defined($newstate) ? ",state='$newstate' " : "");

    my $query_result =
	DBQueryWarn("update experiments set expt_locked=NULL $sclause ".
		    "where eid='$eid' and pid='$pid'");

    if (! $query_result ||
	$query_result->numrows == 0) {
	return -1;
    }
    
    if (defined($newstate)) {
	$self->{'EXPT'}->{'state'} = $newstate;

	if ($EVENTSYS) {
	    EventSendWarn(objtype   => libdb::TBDB_TBEVENT_EXPTSTATE(),
			  objname   => "$pid/$eid",
			  eventtype => $newstate,
			  expt      => "$pid/$eid",
			  host      => $BOSSNODE);
	}
    }
    
    return 0;
}

1252
sub Lock(;$$)
1253
{
1254
    my ($self, $newstate, $unlocktables) = @_;
1255 1256 1257 1258 1259 1260 1261 1262 1263

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();
    my $sclause = (defined($newstate) ? ",state='$newstate' " : "");

1264 1265 1266 1267
    # flag to indicate tables should be unlocked. 
    $unlocktables = 0
	if (!defined($unlocktables));

1268 1269 1270 1271 1272 1273
    my $query_result =
	DBQueryWarn("update experiments set expt_locked=now() $sclause ".
		    "where eid='$eid' and pid='$pid'");

    if (! $query_result ||
	$query_result->numrows == 0) {
1274 1275
	$self->UnLockTables()
	    if ($unlocktables);
1276 1277
	return -1;
    }
1278 1279 1280 1281 1282 1283 1284

    #
    # We do this before calling out to the event system to avoid livelock
    # in case the event system goes down.
    #
    $self->UnLockTables()
	if ($unlocktables);
1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
    
    if (defined($newstate)) {
	$self->{'EXPT'}->{'state'} = $newstate;

	if ($EVENTSYS) {
	    EventSendWarn(objtype   => libdb::TBDB_TBEVENT_EXPTSTATE(),
			  objname   => "$pid/$eid",
			  eventtype => $newstate,
			  expt      => "$pid/$eid",
			  host      => $BOSSNODE);
	}
    }
    return 0;
}

1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355
sub SetState($$)
{
    my ($self, $newstate) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    my $query_result =
	DBQueryWarn("update experiments set state='$newstate' ".
		    "where eid='$eid' and pid='$pid'");

    if (! $query_result ||
	$query_result->numrows == 0) {
	return -1;
    }
    
    if (defined($newstate)) {
	$self->{'EXPT'}->{'state'} = $newstate;

	if ($EVENTSYS) {
	    EventSendWarn(objtype   => libdb::TBDB_TBEVENT_EXPTSTATE(),
			  objname   => "$pid/$eid",
			  eventtype => $newstate,
			  expt      => "$pid/$eid",
			  host      => $BOSSNODE);
	}
    }
    
    return 0;
}

#
# Logfiles. This all needs to change.
#
# Open a new logfile and return its name.
#
sub CreateLogFile($$$)
{
    my ($self, $prefix, $pref) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    # Need to deal with errors.
    $$pref = TBExptCreateLogFile($pid, $eid, $prefix);
    return 0;
}

1356
#
1357
# Set the experiments NS file using AddInputFile() above
1358 1359 1360 1361 1362 1363 1364 1365 1366
#
sub SetNSFile($$)
{
    my ($self, $nsfile) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

1367 1368
    return $self->AddInputFile($nsfile, 1);
}
1369

1370 1371 1372
sub GetNSFile($$)
{
    my ($self, $pref) = @_;
1373

1374 1375 1376
    # Must be a real reference. 
    return -1
	if (! ref($self));
1377

1378 1379 1380 1381 1382 1383 1384 1385
    # In case there is no NS file stored.
    $$pref = undef;

    my $input_data_idx = $self->input_data_idx();
    return 0
	if (!defined($input_data_idx));

    return $self->GetInputFile($input_data_idx, $pref);
1386 1387
}

1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405
#
# Set the experiment to use the logfile. It becomes the "current" spew.
#
sub SetLogFile($$)
{
    my ($self, $logname) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    TBExptSetLogFile($pid, $eid, $logname);    
    return 0;
}

1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426
#
# Get the experiment logfile.
#
sub GetLogFile($$$)
{
    my ($self, $lognamep, $isopenp) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    $$lognamep = undef;

    TBExptGetLogFile($pid, $eid, $lognamep, $isopenp)
	or return -1;
    return 0;
}

1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462
#
# Mark the log as open so that the spew keeps looking for more output.
# 
sub OpenLogFile($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    TBExptOpenLogFile($pid, $eid);    
    return 0;
}

#
# And close it ...
#
sub CloseLogFile($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    TBExptCloseLogFile($pid, $eid);    
    return 0;
}

1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480
#
# And clear it ...
#
sub ClearLogFile($)
{
    my ($self) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();

    TBExptClearLogFile($pid, $eid);    
    return 0;
}

1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493
#
# Run scripts over an experiment.
#
sub PreRun($;$$)
{
    my ($self, $nsfile, $options) = @_;

    # Must be a real reference. 
    return -1
	if (! ref($self));

    my $pid = $self->pid();
    my $eid = $self->eid();
1494
    my $idx = $self->idx();
1495 1496 1497 1498 1499 1500

    $nsfile = ""
	if (!defined($nsfile));
    $options = ""
	if (!defined($options));

1501 1502
    print "Running 'tbprerun $options -e $idx $nsfile'\n";
    mysystem("$TBPRERUN $options -e $idx $nsfile");
1503 1504 1505 1506 1507
    return -1
	if ($?);
    return 0;
}

1508 1509 1510 1511
#
# Initialiaize bookkeeping for a swap operation.
#
sub PreSwap($$$)
1512
{
1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532
    my ($self, $swapper, $which) = @_;

    # Must be a real reference. 
    return -1
	if (! (ref($self) && ref($swapper)));

    my $exptidx  = $self->idx();
    my $rsrcidx  = $self->rsrcidx();
    my $lastrsrc = $rsrcidx;
    my $uid_idx  = $swapper->uid_idx();
    # XXX state is no longer "active" for swapmod of active experiment.
    my $isactive = $self->swapin_time(); 

    #
    # We should never get here with a lastrsrc in the stats record; it
    # indicates something went wrong, and we need to clean up the DB
    # state by hand.
    #
    if ($self->lastrsrc()) {
	print STDERR "Inconsistent lastrsrc in stats record for $self!\n";
1533 1534
	# XXX
	$EXPT_RESOURCESHOSED = 1;
1535 1536 1537 1538 1539 1540 1541 1542 1543 1544
	return -1;
    }

    #
    # Generate a new resource record, but watch for the unused one that
    # we got when the experiment was first created.
    #
    if ($which eq $EXPT_SWAPMOD || $which eq $EXPT_SWAPIN) {
	#
	# In SWAPIN, copy over the thumbnail. This is temporary; I think
1545 1546 1547
	# the thumbnail is going to end up going someplace else.
	# For swapmod, its gonna get overwritten in tbprerun.
	# Ditto above for input_data_idx.
1548 1549 1550
	#
	my $thumbdata = (defined($self->thumbnail()) ?
			 DBQuoteSpecial($self->thumbnail()) : "NULL");
1551 1552
        my $input_data_idx = (defined($self->input_data_idx()) ?
			      $self->input_data_idx() : "NULL");
1553 1554 1555 1556 1557 1558
	my $byswapmod = ($which eq $EXPT_SWAPMOD ? 1 : 0);
	my $byswapin  = ($which eq $EXPT_SWAPIN  ? 1 : 0);

	my $query_result =
	    DBQueryWarn("insert into experiment_resources ".
			" (idx, uid_idx, tstamp, exptidx, lastidx, ".
1559
			"  byswapmod, byswapin, input_data_idx, thumbnail) ".
1560
			"values (0, '$uid_idx', now(), $exptidx, $rsrcidx,".
1561 1562
			"        $byswapmod, $byswapin, ".
			"        $input_data_idx, $thumbdata)");
1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596