libvtop.pm.in 183 KB
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#!/usr/bin/perl -wT
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#
# EMULAB-COPYRIGHT
# Copyright (c) 2005-2009 University of Utah and the Flux Group.
# All rights reserved.
#
package libvtop;

use strict;
use Exporter;
use vars qw(@ISA @EXPORT @EXPORT_OK
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	    $VTOP_FLAGS_UPDATE $VTOP_FLAGS_VERBOSE $VTOP_FLAGS_QUIET
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	    $VTOP_FLAGS_FIXNODES $VTOP_FLAGS_IMPOTENT
	    $VTOP_FLAGS_REGRESSION);
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@ISA    = "Exporter";
@EXPORT = qw( );

use libdb;
use libtblog;
use libtestbed;
use Experiment;
use VirtExperiment;
use Node;
use NodeType;
use Lan;
use OSinfo;
use English;
use Data::Dumper;
use Carp;
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use POSIX;
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use XML::LibXML;
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# Configure variables
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my $TB		  = "@prefix@";
my $BOSSNODE      = "@BOSSNODE@";
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my $AVAIL         = "$TB/bin/avail";
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my $NALLOC        = "$TB/bin/nalloc";
my $NFREE         = "$TB/bin/nfree";
my $OS_SELECT     = "$TB/bin/os_select";
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my $DELAYCAPACITY = @DELAYCAPACITY@;	# Can be overridden by user.
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my $DELAYTHRESH   = @DELAYTHRESH@;
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# Flags.
$VTOP_FLAGS_VERBOSE	= 0x01;
$VTOP_FLAGS_UPDATE	= 0x02;
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$VTOP_FLAGS_FIXNODES	= 0x04;
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$VTOP_FLAGS_IMPOTENT	= 0x08;
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$VTOP_FLAGS_REGRESSION  = 0x10;
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$VTOP_FLAGS_QUIET       = 0x20;
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@EXPORT_OK = qw($VTOP_FLAGS_UPDATE $VTOP_FLAGS_VERBOSE $VTOP_FLAGS_FIXNODES
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		$VTOP_FLAGS_IMPOTENT $VTOP_FLAGS_REGRESSION $VTOP_FLAGS_QUIET);
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#
# Create an object representing the stuff we need to create the vtop file.
#
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sub Create($$$$)
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{
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    my ($class, $experiment, $user, $flags) = @_;
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    my $virtexperiment = VirtExperiment->Lookup($experiment);
    if (!defined($virtexperiment)) {
	tberror("Could not load virtual experiment object for $experiment\n");
	return undef;
    }

    my $self              = {};
    $self->{'EXPERIMENT'} = $experiment;
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    $self->{'USER'}       = $user;
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    $self->{'VIRTEXPT'}   = $virtexperiment;
    $self->{'FLAGS'}      = $flags;
    $self->{'VNODES'}     = {};
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    $self->{'DELAYNODES'} = {};
    $self->{'LANNODES'}   = {};
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    $self->{'VLANS'}      = {};
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    $self->{'MEMBEROF'}   = {};
    $self->{'COUNTERS'}   = {};
    $self->{'EXPTSTATS'}  = {};
    $self->{'DELAYLINKS'} = {};
    $self->{'OPTIONS'}    = {};
    $self->{'DELAYID'}    = 0;
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    $self->{'PHOSTID'}    = 0;
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    $self->{'IFACEID'}    = 32768;
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    $self->{'PORTBW'}     = {};
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    $self->{'RESULTS'}    = { "nodes"  => [],
			      "links"  => [],
			      "class"  => [],
			      "fixed"  => [] };
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    # Mostly for update mode.
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    $self->{'FIXEDNODES'}  = {};
    $self->{'CURRENT_V2P'} = {};
    $self->{'CURRENT_P2V'} = {};
    $self->{'CURRENT_V2V'} = {};
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    $self->{'OLDRSRVCLEAN_FLAG'}  = 0;
    $self->{'OLDRSRVCLEAN_NODES'} = {};
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    # Below is for interpretation of assign results.
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    $self->{'PNODES'}      = {};
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    $self->{'SOLUTION'}    = {};
    $self->{'NEWRESERVED'} = {};	# Newly reserved nodes.
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    $self->{'NORECOVER'}   = 0;	
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    bless($self, $class);

    return $self;
}
# accessors
sub experiment($)       { return $_[0]->{'EXPERIMENT'}; }
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sub user($)             { return $_[0]->{'USER'}; }
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sub virtexperiment($)   { return $_[0]->{'VIRTEXPT'}; }
sub flags($)            { return $_[0]->{'FLAGS'}; }
sub vnodes($)           { return $_[0]->{'VNODES'}; }
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sub delaynodes($)       { return $_[0]->{'DELAYNODES'}; }
sub lannodes($)         { return $_[0]->{'LANNODES'}; }
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sub vlans($)            { return $_[0]->{'VLANS'}; }
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sub memberof($)         { return $_[0]->{'MEMBEROF'}; }
sub counters($)         { return $_[0]->{'COUNTERS'}; }
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sub counter($$)         { return $_[0]->{'COUNTERS'}->{$_[1]}; }
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sub options($)          { return $_[0]->{'OPTIONS'}; }
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sub option($$)          { return (exists($_[0]->{'OPTIONS'}->{$_[1]}) ?
				  $_[0]->{'OPTIONS'}->{$_[1]} : undef); }
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sub exptstats($)        { return $_[0]->{'EXPTSTATS'}; }
sub delaylinks($)       { return $_[0]->{'DELAYLINKS'}; }
sub delaynodecount()    { return scalar(keys(%{ $_[0]->delaynodes() })); }
sub portbw($)           { return $_[0]->{'PORTBW'}; }
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sub results($)          { return $_[0]->{'RESULTS'}; }
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sub current_v2p($)      { return $_[0]->{'CURRENT_V2P'}; }
sub current_p2v($)      { return $_[0]->{'CURRENT_P2V'}; }
sub current_v2v($)      { return $_[0]->{'CURRENT_V2V'}; }
sub pnodes($)           { return $_[0]->{'PNODES'}; }
sub fixednodes($)       { return $_[0]->{'FIXEDNODES'}; }
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sub newreserved($)      { return $_[0]->{'NEWRESERVED'}; }
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sub newreservednodes($) { return keys(%{ $_[0]->{'NEWRESERVED'} }); }
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sub oldreservednodes($) { return $_[0]->{'OLDRSRVCLEAN_NODES'}; }
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sub norecover($)        { return $_[0]->{'norecover'}; }
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sub pid($)		{ return $_[0]->experiment()->pid(); }
sub pid_idx($)		{ return $_[0]->experiment()->pid_idx(); }
sub eid($)		{ return $_[0]->experiment()->eid(); }
sub exptidx($)		{ return $_[0]->experiment()->idx(); }

# The virtual tables from the DB.
sub virt_table($$)      { return $_[0]->virtexperiment()->Table($_[1]); }
sub virt_vtypes($)	{ return $_[0]->virt_table("virt_vtypes"); }
sub virt_nodes($)       { return $_[0]->virt_table("virt_nodes"); }
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sub virt_lans($)        { return $_[0]->virt_table("virt_lans"); }
sub virt_lan_lans($)    { return $_[0]->virt_table("virt_lan_lans"); }
sub virt_desires($)	{ return $_[0]->virt_table("virt_node_desires"); }
sub virt_startloc($)	{ return $_[0]->virt_table("virt_node_startloc"); }
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sub virt_trafgens($)	{ return $_[0]->virt_table("virt_trafgens"); }
sub virt_lan_settings($){ return $_[0]->virt_table("virt_lan_settings"); }
sub virt_lan_member_settings($)	{
    return $_[0]->virt_table("virt_lan_member_settings"); }
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# Given a vname, is it a node in the topo (or something else like a delay).
sub isatoponode($$)     { return exists($_[0]->vnodes()->{$_[1]}); }
sub isadelaynode($$)    { return exists($_[0]->delaynodes()->{$_[1]}); }
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# Debug output.
sub verbose($)		{ return $_[0]->flags() & $VTOP_FLAGS_VERBOSE; }
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sub quiet($)		{ return $_[0]->flags() & $VTOP_FLAGS_QUIET; }
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sub updating($)		{ return $_[0]->flags() & $VTOP_FLAGS_UPDATE; }
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sub fixcurrent($)	{ return $_[0]->flags() & $VTOP_FLAGS_FIXNODES; }
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sub impotent($)		{ return $_[0]->flags() & $VTOP_FLAGS_IMPOTENT; }
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sub regression($)	{ return $_[0]->flags() & $VTOP_FLAGS_REGRESSION; }
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sub printdb($$)		{ print $_[1] if ($_[0]->verbose()); }

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# We name delay nodes internally as they are needed.
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sub nextdelayname($)    { return "tbdelay" . $_[0]->{'DELAYID'}++; }
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# For when the user wants a specific delay os. Use a desire.
sub delay_desire($)	{ return $_[0]->option("delay_desire_string"); }
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# For XML
sub nextifacenumber($)  { return $_[0]->{'IFACEID'}++; }
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sub nextphostnumber($)  { return $_[0]->{'PHOSTID'}++; }
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# Virtual Types. 
sub virttypeisvtype($$) { return $_[0]->virt_vtypes()->Find($_[1]); }
sub VirtTypes($)        { return $_[0]->virt_vtypes()->Rows(); }

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# Results are stored until they are spit out in one of several formats.
sub addvclass($$)	{ push(@{$_[0]->results()->{"class"}}, $_[1]); }
sub addfixed($$)	{ push(@{$_[0]->results()->{"fixed"}}, $_[1]); }
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# The reason for this funkyness is so output order is consistent with
# assign_wrapper when running in regression mode. 
sub addnode($$)		{ push(@{$_[0]->results()->{"nodeslinks"}},
			       ["node", $_[1]]); }
sub addlink($$)		{ push(@{$_[0]->results()->{"nodeslinks"}},
			       ["link", $_[1]]); }
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# Caller will want these.
sub minimum_nodes($)    { return $_[0]->counter("minimum_nodes"); }
sub maximum_nodes($)    { return $_[0]->counter("maximum_nodes"); }
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sub plabcount($)	{ return $_[0]->counter("plabcount"); }
sub virtnodecount($)	{ return $_[0]->counter("virtcount"); }
sub simnodecount($)	{ return $_[0]->counter("simcount"); }
sub remotenodecount($)	{ return $_[0]->counter("remotecount"); }
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sub sharednodecount($)	{ return $_[0]->counter("sharedcount"); }
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###############################################################################
# Virtual Nodes. A separate package so we can create objects for each one
# and then add local stuff to them.
#
package libvtop::virt_node;
use Carp;
use vars qw($AUTOLOAD);
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use overload ('""' => 'Stringify');
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# To avoid wrtting out all the methods.
sub AUTOLOAD {
    my $self = shift;
    my $type = ref($self) or croak "$self is not an object";

    my $name = $AUTOLOAD;
    $name =~ s/.*://;   # strip fully-qualified portion

    if (@_) {
	return $self->{'HASH'}->{$name} = shift;
    }
    elsif (exists($self->{'HASH'}->{$name})) {
	return $self->{'HASH'}->{$name};
    }
    else {
	return $self->virt_node()->$name();
    }
}

#
# Wrap up a virt node.
#
sub Create($$$)
{
    my ($class, $vtop, $virt_node) = @_;

    my $self = {};
    bless($self, $class);

    $self->{'VIRTNODE'} = $virt_node;
    $self->{'VTOP'}     = $vtop;
    $self->{'HASH'}     = {};
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    return $self;
}
# accessors
sub virt_node($)	{ return $_[0]->{'VIRTNODE'}; }
sub vtop($)		{ return $_[0]->{'VTOP'}; }
sub hash($)		{ return $_[0]->{'HASH'}; }

# Break circular reference someplace to avoid exit errors.
sub DESTROY {
    my $self = shift;

    $self->{'VIRTNODE'}   = undef;
    $self->{'VTOP'}       = undef;
    $self->{'HASH'}       = undef;
}

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sub Stringify($)
{
    my ($self) = @_;
    my $vname  = $self->vname();

    return "[vnode:$vname]";
}

###############################################################################
# Virtual Lans. This wraps up the virt_lan_lan table, and allows storing
# the members (virt_lans table entries).
#
package libvtop::virt_lan;
use Carp;
use vars qw($AUTOLOAD);
use overload ('""' => 'Stringify');

# To avoid wrtting out all the methods.
sub AUTOLOAD {
    my $self = shift;
    my $type = ref($self) or croak "$self is not an object";

    my $name = $AUTOLOAD;
    $name =~ s/.*://;   # strip fully-qualified portion

    if (@_) {
	return $self->{'HASH'}->{$name} = shift;
    }
    elsif (exists($self->{'HASH'}->{$name})) {
	return $self->{'HASH'}->{$name};
    }
    else {
	return $self->virt_lanlan()->$name();
    }
}

#
# Wrap up a virt lan.
#
sub Create($$$$)
{
    my ($class, $vtop, $virt_lanlan) = @_;

    my $self = {};
    bless($self, $class);

    $self->{'VIRTLANLAN'}    = $virt_lanlan;
    $self->{'VTOP'}          = $vtop;
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    $self->{'MEMBERHASH'}    = {};
    $self->{'MEMBERLIST'}    = [];
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    $self->{'SHAPEDMEMBERS'} = {};
    $self->{'HASH'}          = {};

    return $self;
}
# accessors
sub virt_lanlan($)	{ return $_[0]->{'VIRTLANLAN'}; }
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sub members($)		{ return $_[0]->{'MEMBERHASH'}; }
sub memberlist($)       { return @{ $_[0]->{'MEMBERLIST'} }; }
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sub shapedmembers($)	{ return $_[0]->{'SHAPEDMEMBERS'}; }
sub vtop($)		{ return $_[0]->{'VTOP'}; }
sub hash($)		{ return $_[0]->{'HASH'}; }

# Break circular reference someplace to avoid exit errors.
sub DESTROY {
    my $self = shift;

    $self->{'VIRTLANLAN'} = undef;
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    $self->{'MEMBERHASH'} = undef;
    $self->{'MEMBERLIST'} = undef;
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    $self->{'VTOP'}       = undef;
    $self->{'HASH'}       = undef;
}

sub Stringify($)
{
    my ($self) = @_;
    my $vname  = $self->vname();

    return "[vlan:$vname]";
}

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sub addmember($$)
{
    my ($self, $vlanmember) = @_;
    
    $self->members()->{$vlanmember->member()} = $vlanmember;
    push(@{ $self->{'MEMBERLIST'} }, $vlanmember);

    return 0;
}

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#
# Other support functions.
#
sub usevirtiface($)
{
    my ($self) = @_;
    my $encap  = $self->_encapstyle();

    return ($encap eq "veth" || $encap eq "veth-ne" || $encap eq "vlan");
}
sub membershaped($$) {
    my ($self, $member) = @_;
    return $self->shapedmembers()->{"$member"};
}
sub setmembershaped($$) {
    my ($self, $member) = @_;
    $self->shapedmembers()->{"$member"} = 1;
}

###############################################################################
# Virtual Lans Member. A separate package so we can create objects for
# each one and then add local stuff to them.
#
package libvtop::virt_lan_member;
use Carp;
use vars qw($AUTOLOAD);
use overload ('""' => 'Stringify');

# To avoid wrtting out all the methods.
sub AUTOLOAD {
    my $self = shift;
    my $type = ref($self) or croak "$self is not an object";

    my $name = $AUTOLOAD;
    $name =~ s/.*://;   # strip fully-qualified portion

    if (@_) {
	return $self->{'HASH'}->{$name} = shift;
    }
    elsif (exists($self->{'HASH'}->{$name})) {
	return $self->{'HASH'}->{$name};
    }
    else {
	return $self->virt_member()->$name();
    }
}

#
# Wrap up a virt lan member.
#
sub Create($$$$)
{
    my ($class, $vtop, $virt_member, $virt_lan) = @_;

    my $self = {};
    bless($self, $class);

    $self->{'VIRTMEMBER'} = $virt_member;
    $self->{'VIRTLAN'}    = $virt_lan;
    $self->{'VIRTNODE'}   = $vtop->vnodes()->{$virt_member->vnode()};
    $self->{'VTOP'}       = $vtop;
    $self->{'HASH'}       = {};

    return $self;
}
# accessors
sub virt_member($)	{ return $_[0]->{'VIRTMEMBER'}; }
sub virt_lan($)		{ return $_[0]->{'VIRTLAN'}; }
sub virt_node($)	{ return $_[0]->{'VIRTNODE'}; }
sub vtop($)		{ return $_[0]->{'VTOP'}; }
sub hash($)		{ return $_[0]->{'HASH'}; }

# Break circular reference someplace to avoid exit errors.
sub DESTROY {
    my $self = shift;

    $self->{'VIRTLAN'}    = undef;
    $self->{'VIRTNODE'}   = undef;
    $self->{'VIRTMEMBER'} = undef;
    $self->{'VTOP'}       = undef;
    $self->{'HASH'}       = undef;
}

sub Stringify($)
{
    my ($self) = @_;
    my $vnode  = $self->vnode();
    my $vport  = $self->vport();

    return "$vnode:$vport";
}


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#############################################################################
# Back to the main package.
#
package libvtop;

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#
# Load some physical info (for types, interfaces, speeds).
#
sub LoadPhysInfo($)
{
    my ($self) = @_;

    $self->printdb("Loading physical info\n");

    #
    # Interface capabilities, for getting speeds.
    #
    my %interface_capabilities = ();

    my $query_result =
	DBQueryWarn("select * from interface_capabilities");
    return -1
	if (!$query_result);

    while (my ($type, $capkey, $capval) = $query_result->fetchrow()) {
	$interface_capabilities{$type} = {}
  	    if (!defined($interface_capabilities{$type}));
	$interface_capabilities{$type}->{$capkey} = $capval;
    }

    #
    # Now get interface speeds for each type/class. We use this for
    # determining if a delay node is required. Very hacky, quite
    # wrong.
    #
    my %node_type_linkbw = ();
    
    # XXX: PlanetLab hack - PlanetLab 'control' interfaces are also
    # 'experimental' interfaces! We probably need a way to express
    # this in the interfaces table or interface_types
    #
    $query_result =
	DBQueryWarn("select distinct i.interface_type,n.type ".
		    "  from interfaces as i ".
		    "left join nodes as n on n.node_id=i.node_id ".
		    "where i.role='" . TBDB_IFACEROLE_EXPERIMENT . "' ".
		    "      or (n.type='pcplabphys' and i.role='" .
		                 TBDB_IFACEROLE_CONTROL . "')");
    return -1
	if (!$query_result);

    # XXX Special hack for sim nodes.
    $node_type_linkbw{"sim"} = {};

    while (my ($iface_type, $node_type) = $query_result->fetchrow()) {
	my $typeinfo = NodeType->Lookup($node_type);
	if (!defined($typeinfo)) {
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	    warn("No type info for node type $node_type\n");
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	    return -1;
	}
	my $node_class = $typeinfo->class();

	$node_type_linkbw{$node_type} = {}
	    if (!defined($node_type_linkbw{$node_type}));
	$node_type_linkbw{$node_class} = {}
	    if (!defined($node_type_linkbw{$node_class}));

	if (!defined($interface_capabilities{$iface_type}->{"protocols"})) {
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	    warn("No protocols listed in capabilities for $iface_type!\n");
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	    return -1;
	}
	my @protolist =
	    split(",", $interface_capabilities{$iface_type}->{"protocols"});

	foreach my $proto (@protolist) {
	    my $def_speed =
		$interface_capabilities{$iface_type}->{"${proto}_defspeed"};

	    if (!defined($def_speed)) {
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		warn("No default speed in capabilites for $iface_type!\n");
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		return -1;
	    }

	    my $auxspeeds =
		$interface_capabilities{$iface_type}->{"${proto}_auxspeeds"};
	    my @auxspeedlist = ();
	    if ($auxspeeds) {
		@auxspeedlist = split(",", $auxspeeds);
	    }

	    foreach my $speed ($def_speed, @auxspeedlist) {
		$node_type_linkbw{$node_type}{$proto}->{$speed} = 1;
		$node_type_linkbw{$node_class}{$proto}->{$speed} = 1;

		#
		# If the type/class has a non-zero simnode capacity, then add
		# entries for the interface speed so that requires_delay can
		# figure out interface speeds the underlying node type
		# supports.
		#
		if ($typeinfo->simnode_capacity()) {
		    $node_type_linkbw{"sim"}{$proto}->{$speed} = 1;
		}
	    }
	}
    }
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    #
    # Ug, it just gets worse and worse. We also need to map between the
    # auxtypes that a node (its physical type) can take on. For example,
    # a link between two pcvm nodes is really a link between a pc600 and
    # pc850.
    #
    $query_result =
	DBQueryFatal("select distinct n.type,at.type from node_auxtypes as at ".
		     "left join nodes as n on n.node_id=at.node_id");

    while (my ($phystype, $auxtype) = $query_result->fetchrow()) {
	next
	    if (!exists($node_type_linkbw{$phystype}));
	
	$node_type_linkbw{$auxtype} = $node_type_linkbw{$phystype};
    }

    #
    # Here it goes getting even worse - we have to do a similar thing for
    # vtypes.
    #
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    foreach my $ref ($self->VirtTypes()) {
	my $vtype   = $ref->name();
	my @members = split(" ", $ref->members());
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	foreach my $phystype (@members) {
	    next
		if (!exists($node_type_linkbw{$phystype}));

	    $node_type_linkbw{$vtype} = {}
	        if (!defined($node_type_linkbw{$vtype}));

	    foreach my $protocol (keys(%{ $node_type_linkbw{$phystype} })) {
		my @list = keys(%{ $node_type_linkbw{$phystype}{$protocol} });
		foreach my $speed (@list) {
		    $node_type_linkbw{$vtype}{$protocol}->{$speed} = 1;
		}
	    }
	}
    }

    if ($self->verbose()) {
	$self->printdb("Interface Speeds:\n");
	foreach my $type (keys(%node_type_linkbw)) {
	    foreach my $protocol (keys(%{ $node_type_linkbw{$type} })) {
		my @list = keys(%{ $node_type_linkbw{$type}{$protocol} });

		$self->printdb(" $type:$protocol - @list\n");
	    }
	}
    }
    
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    $self->{'IFACECAPS'}  = \%interface_capabilities;
    $self->{'TYPELINKBW'} = \%node_type_linkbw;
    
    return 0;
}
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sub interfacespeedmbps($$$)
{
    my ($self, $type, $which) = @_;
        
    return $self->{'IFACECAPS'}->{$type}->{"${which}_defspeed"}/1000.0;
}
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#
# When updating with fixednodes turned on, we need the current set
# of nodes that need to be fixed.
#
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sub LoadCurrentResources($)
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{
    my ($self) = @_;

    $self->counters()->{'reserved_simcount'}  = 0;
    $self->counters()->{'reserved_virtcount'} = 0;
    $self->counters()->{'reserved_physcount'} = 0;

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    $self->printdb("Loading current resources" .
		   ($self->regression() ? " in regression mode" : "") . "\n");
628

629
    my @nodelist = $self->experiment()->NodeList(0, 1);
630 631 632
    return 0
	if (!@nodelist);

633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650
    if ($self->regression()) {
	#
	# In regression mode, we just store the p2v mapping for fixnode.
	#
	foreach my $pnode (@nodelist) {
	    my $vname   = $pnode->vname();
	    my $node_id = $pnode->node_id();

	    if ($pnode->isvirtnode()) {
		$self->fixednodes()->{$vname} = $pnode->phys_nodeid();
	    }
	    else {
		$self->fixednodes()->{$vname} = $node_id;
	    }
	}
	return 0;
    }

651
    foreach my $pnode (@nodelist) {
652 653 654 655 656 657 658 659 660
	my $vname   = $pnode->vname();
	my $node_id = $pnode->node_id();
	my $rsrv    = $pnode->ReservedTableEntry();

	# A list of vnodes on this pnode.
	$self->current_p2v()->{$pnode->phys_nodeid()} = []
	    if (! exists($self->current_p2v()->{$pnode->phys_nodeid()}));
	$self->pnodes()->{$node_id} = $pnode;

661 662 663 664 665 666 667 668 669 670
	#
	# WIDEAREA nodes are going to break.
	#
	if ($pnode->isremotenode() &&
	    !$pnode->isplabdslice() && !$pnode->isdedicatedremote()) {
	    tberror("Cannot update widearea nodes yet!\n");
	    return -1;
	}
	if ($pnode->isvirtnode()) {
	    $self->counters()->{'reserved_virtcount'}++;
671 672 673 674 675 676 677

	    # Get the underlying physical node.
	    my $ppnode = Node->Lookup($pnode->phys_nodeid());
	    if (!defined($ppnode)) {
		tberror("Cannot map $pnode to its real physnode");
		return -1;
	    }
678
	    my $ppnode_id = $ppnode->node_id();
679

680 681 682
	    $self->fixednodes()->{$vname} = $ppnode_id
		if ($self->fixcurrent());
	    
683 684 685
	    #
	    # Record the mappings. 
	    #
686 687
	    $self->current_v2v()->{$vname} = $pnode->node_id();
	    $self->current_v2p()->{$vname} = $ppnode->node_id();
688 689 690 691 692
	    push(@{ $self->current_p2v()->{$ppnode->node_id()} }, $vname);
	    
	    # Mark the node as unused until later.
	    $pnode->_reuse("unused");
	    $ppnode->_reuse("unused");
693 694 695 696 697 698 699 700 701

	    #
	    # Add the pnode node to the oldreserved list for nfree.
	    # See the comment below. We cannot use p2v because we
	    # might not own all those nodes, if on a shared node.
	    # We do not add the ppnode. It will get added in the
	    # next clause if we actually own it.
	    #
	    $self->oldreservednodes()->{$pnode->node_id()} = $pnode;
702 703
	    
	    $self->printdb("current v2p: $node_id ($ppnode_id) -> $vname\n");
704 705 706 707 708 709 710 711 712 713
	}
	else {
	    #
	    # All the sim stuff is bit rotting cause no one understands it.
	    #
	    if ($rsrv->{'erole'} eq TBDB_RSRVROLE_SIMHOST) {
		tberror("Cannot update sim nodes yet!\n");
		return -1;
	    }
	    else {
714 715 716
		$self->fixednodes()->{$vname} = $pnode->node_id()
		    if ($self->fixcurrent());
		
717
		$self->counters()->{'reserved_physcount'}++;
718 719 720 721

		#
		# Record the mapping. 
		#
722
		$self->current_v2p()->{$vname} = $pnode->node_id();
723 724 725 726
		push(@{ $self->current_p2v()->{$node_id} }, $vname);
		# Mark the node as unused until later.
		$pnode->_reuse("unused");

727 728 729 730 731 732 733
		#
		# Add the pnode node to the oldreserved list for nfree.
		# See the comment below. We cannot use p2v because we
		# might not own all those nodes, if on a shared node.
		#
		$self->oldreservednodes()->{$pnode->node_id()} = $pnode;

734
		$self->printdb("current v2p: $node_id -> $vname\n");
735 736 737 738 739 740
	    }
	}
    }
    return 0;
}

741 742 743 744 745 746
sub LoadVirtNodes($)
{
    my ($self) = @_;

    $self->printdb("Loading virtual nodes\n");

747 748 749 750
    my $pid    = $self->pid();
    my $eid    = $self->eid();
    my $table  = $self->virt_nodes();

751
    foreach my $virt_node ($table->Rows()) {
752 753 754 755
	my $vnode    = libvtop::virt_node->Create($self, $virt_node);
	my $vname    = $vnode->vname();
	my $desires  = {};
	my $startloc = undef;
756 757

	# Other fields we need.
758
	my $ips     = $vnode->ips() || "";
759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774
	my $type    = $vnode->type();
	my $fixed   = $vnode->fixed();
	my $osname  = $vnode->osname();

	# XXX
	# If its a vtype, there will not be any node_type data. This
	# can break things, if one were to mix a virt/remote type with
	# a nonvirt/local type! Need to actually verify the vtypes
	# for consistency. 
	#
	my $isremote= 0;
	my $isvirt  = 0;
	my $issub   = 0;
	my $isplab  = 0;
	my $issim   = 0;
	my $isdyn   = 0;	# Only virtnodes are dynamic.
775
	my $isvtyped= 0;
776
	my $isded   = 0;
777 778 779 780 781 782

	# If we have a real type or auxtype ...
	my $nodetype = NodeType->LookupAny($type);
	if (!defined($nodetype)) {
	    my $vtype = $self->virttypeisvtype($type);
	    if (!defined($vtype)) {
783
		warn("Improper type $type for node $vnode!\n");
784 785 786 787 788 789 790 791 792 793
		return -1;
	    }
	    #
	    # For now, just pick the first member type.
	    #
	    my @memberlist = split(" ", $vtype->members());
	    my $vtypename  = $memberlist[0];

	    $nodetype = NodeType->LookupAny($vtypename);
	    if (!defined($nodetype)) {
794
		warn("Improper type $vtypename in vtypes for node $vnode!\n");
795 796
		return -1;
	    }
797
	    $isvtyped = 1;
798
	}
799 800
	$vnode->_typeinfo($nodetype);
	
801 802 803 804 805 806
	$isremote = $nodetype->isremotenode();
	$isvirt   = $nodetype->isvirtnode();
	$issub    = $nodetype->issubnode();
	$isplab   = $nodetype->isplabdslice();
	$issim    = $nodetype->issimnode();
	$isdyn    = $nodetype->isdynamic();
807
	$isded    = $nodetype->isdedicatedremote();
808

809 810 811
	# Mark this as being a virtual typed node.
	$vnode->_isvtyped($isvtyped);

812 813 814 815 816 817 818 819
	# All this info is stashed in our local object.
	$vnode->_nodeweight(undef);
	$vnode->_isremotenode($isremote);
	$vnode->_isvirtnode($isvirt);
	$vnode->_issubnode($issub);
	$vnode->_isplabnode($isplab);
	$vnode->_issimnode($issim);
	$vnode->_isdynamic($isdyn);
820
	$vnode->_isdedremote($isded);
821 822
	# Set below from a desire.
	$vnode->_sharedokay(0);
823

824 825
	# The mapped osname to actual osinfo structure.
	$vnode->_osinfo(undef);
826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844
	# Eventual physical mapping. 
	$vnode->_physnode(undef);
	# Handy to combine these.
	$vnode->_settings([ $vnode->cmd_line(),
			    $vnode->rpms(),
			    $vnode->startupcmd(),
			    $vnode->tarfiles(),
			    $vnode->failureaction(),
			    $vnode->routertype() ]);

	#
	# If a subnode, kill the fixed mapping. That was just to
	# tell us the connection. We do not want to overload "fixed"
	# within assign wrapper since its already overloaded.
	#
	if ($issub) {
	    # Must be a parent. Set in the parser, either explicitly, or else
	    # one is created if the user leaves it out.
	    if (!defined($fixed) || $fixed eq "") {
845
		warn("Subnode $vname must be fixed to its parent!\n");
846 847 848 849 850 851 852 853 854
		return -1;
	    }
	    $vnode->_parent($fixed);
	    $vnode->fixed("");
	    undef($fixed);
	}

	# Can fixed really get set to ""?
	if (defined($fixed) && $fixed ne "") {
855
	    # Store the name since we use FIXED_NODES for delay nodes too.
856
	    $self->fixednodes()->{$vname} = $fixed;
857 858 859
	}

	$self->printdb("  $vname type:$type ips:$ips\n");
860
	$self->printdb("         isrem:$isremote isvirt:$isvirt");
861 862
	$self->printdb(" fixed:$fixed")
	    if (defined($fixed) && $fixed ne "");
863
	$self->printdb("\n");
864 865 866 867 868 869 870 871 872 873 874
	
	# We need to check the names to make sure they do not clash with
	# our internal delay node names.
	if (($vname =~ /^tbdelay\d+/) ||
	    ($vname =~ /^tbsdelay\d+/)) {
	    print "Warning: $vname is a reserved name. Working around it.\n";
	    my ($num) = ($vname =~ /(\d+)/);
	    $self->delayid($num + 1);
	}

	# Take apart the IP list.
875
	my @iplist  = split(" ", $ips);
876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902
	foreach my $ipinfo (@iplist) {
	    my ($port,$ip) = split(":",$ipinfo);
	    
	    $self->{'IPS'}->{"$vname:$port"} = $ip;
	}

	#
	# Map the osname to an OSID now so that we can check max_concurrent.
	# This also avoids the work and *check* later after we have done 90%
	# of assign_wrapper. If no osname was specified, we have to wait and
	# use the default for the type of phys node that assign picks.
	#
	if (defined($osname) && $osname ne "") {
	    my $osinfo = OSinfo->Lookup("$pid,$osname");
	    if (!defined($osinfo)) {
		$osinfo = OSinfo->LookupByName($osname);

		if (!defined($osinfo)) {
		    tberror({cause => 'user', type => 'primary',
			     severity => SEV_ERROR,
			     error => ['invalid_os', undef, $osname, $pid]},
			    "Invalid OS $osname in project $pid!");
		    return -1;
		}
	    }
	    $vnode->_osinfo($osinfo);
	}
903 904
	elsif ($isvirt) {
	    # Silly default.
905
	    my $osinfo = OSinfo->LookupByName("OPENVZ-STD");
906 907
	    $vnode->_osinfo($osinfo);
	}
908 909 910 911 912 913 914

	#
	# Add in desires.
	#
	foreach my $desire ($self->virt_desires()->Rows()) {
	    next
		if ($desire->vname() ne $vname);
915
	    
916
	    $desires->{$desire->desire()} = $desire->weight();
917 918 919 920 921

	    # User says a shared node is okay. We need this info later
	    # when generating links/lans for the vtop.
	    $vnode->_sharedokay(1)
		if ($isvirt && $desire->desire() eq "pcshared");
922 923 924 925 926 927 928 929 930 931 932 933 934 935
	}
	$vnode->_desires($desires);

	#
	# And the startloc, but doubt this is used anymore.
	#
	foreach my $startloc ($self->virt_startloc()->Rows()) {
	    if ($startloc->vname() eq $vname) {
		$startloc = $startloc->building();
		last;
	    }
	}
	$vnode->_startloc($startloc);

936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
	# Counters
	$self->{'COUNTERS'}->{'simcount'}++
	    if ($issim);
	$self->{'COUNTERS'}->{'remotecount'}++
	    if ($isremote);
	$self->{'COUNTERS'}->{'virtcount'}++
	    if ($isvirt);
	$self->{'COUNTERS'}->{'plabcount'}++
	    if ($isplab);
	$self->{'COUNTERS'}->{'physcount'}++
	    if (!$issim && !$isvirt);
	$self->{'COUNTERS'}->{'sharedcount'}++
	    if ($isvirt && $vnode->_sharedokay());
	# stats
	my $ipcount = scalar(@iplist);

	$self->exptstats()->{"maxlinks"} = $ipcount
	    if ($ipcount > $self->exptstats()->{"maxlinks"});
	$self->exptstats()->{"minlinks"} = $ipcount
	    if ($ipcount < $self->exptstats()->{"minlinks"});

957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982
	# Add to the list.
	$self->{'VNODES'}->{$vname} = $vnode;
    }
    return 0;
}

sub LoadVirtLans($)
{
    my ($self) = @_;

    $self->printdb("Loading virtual lans\n");

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

    foreach my $virt_lan_member ($table->Rows()) {
	my $vlanname = $virt_lan_member->vname();

	# Local wrapper for virt_lan_lan table entry (the "lan").
	my $virtlan = $self->vlans()->{$vlanname};
	if (!defined($virtlan)) {
	    my $virt_lan_lan = $self->virt_lan_lans()->Find($vlanname);
	    $virtlan = libvtop::virt_lan->Create($self, $virt_lan_lan);
	    # Add it to the toplevel list of lans.
	    $self->vlans()->{$vlanname} = $virtlan;
983
	    $virtlan->_accesspoint(undef);
984 985 986 987 988 989 990 991 992
	}

	# Now the local wrapper for the virt_lan table entry (the "member").
	my $vlanmember = libvtop::virt_lan_member->Create($self,
							  $virt_lan_member,
							  $virtlan);

	# Which we add to the member hash for the lan by vnode:vport
	# Note that $vlanmember->member() returns vnode:port.
993
	$virtlan->addmember($vlanmember);
994 995 996 997 998 999 1000 1001

	# Global map from vnode:port back to the lan object
	$self->memberof()->{$vlanmember->member()} = $virtlan;

	# Other fields we need below
	my $delay          = $vlanmember->delay();
	my $bandwidth      = $vlanmember->bandwidth();
	my $est_bandwidth  = $vlanmember->est_bandwidth();
1002
	my $backfill       = $vlanmember->backfill();
1003 1004 1005 1006
	my $lossrate       = $vlanmember->lossrate();
	my $rdelay         = $vlanmember->rdelay();
	my $rbandwidth     = $vlanmember->rbandwidth();
	my $rest_bandwidth = $vlanmember->rest_bandwidth();
1007
	my $rbackfill      = $vlanmember->rbackfill();
1008 1009 1010 1011 1012 1013 1014 1015 1016 1017
	my $rlossrate      = $vlanmember->rlossrate();
	my $widearea       = $vlanmember->widearea();
	my $isemulated     = $vlanmember->emulated();
	my $uselinkdelay   = $vlanmember->uselinkdelay();
	my $nobwshaping    = $vlanmember->nobwshaping();
	my $trivial_ok     = $vlanmember->trivial_ok();
	my $protocol       = $vlanmember->protocol();
	my $mustdelay      = $vlanmember->mustdelay();
	my $encap          = $vlanmember->encap_style();
	my $mask           = $vlanmember->mask();
1018 1019 1020 1021 1022
	my $ip             = $vlanmember->ip();
	my ($vname,$vport) = split(":", $vlanmember->member());

	# virt_nodes:ips is actually deprecated; this overrides it.
	$self->{'IPS'}->{"$vname:$vport"} = $ip;
1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055

	#
	# So all this stuff is really per-lan state, but an artifact of
	# the original implementation is that it is duplicated in every
	# single member row. So, push the info up a level to make it easy
	# to figure out how each lan is set up.
	#

	# If RED, must insert traffic shapping.
	$virtlan->_mustdelay($mustdelay);
	# User has requested the link/lan be emulated. Not typical.
	$virtlan->_emulated($isemulated);
	# User has requested "endnodeshaping" (dummynet on end nodes).
	$virtlan->_uselinkdelay($uselinkdelay);
        # The nobwshaping flag is used in conjunction with emulated
        # links to turn off actual bw traffic shaping on an emulated
        # link. This allows assign to match the specified bws, but not
        # force them to be such with delay nodes (leaves it up to the
        # user to moderate the bw).
	$virtlan->_nobwshaping($nobwshaping);
	$virtlan->_encapstyle($encap);
	# User has said that colocating is okay. Not typical.
	$virtlan->_trivial_ok($trivial_ok);
	# Link is connected to a remote node, and gets a tunnel.
	$virtlan->_tunnel(0);
	# Netmask for the entire lan.
	$virtlan->_mask($mask);
	$virtlan->_widearea($widearea);
	# Whether all member nodes are simulated
	$virtlan->_allsim(0);
	$virtlan->_protocol($protocol);
	$virtlan->_accesspoint($vlanmember)
	    if ($vlanmember->is_accesspoint());
1056
	$virtlan->_sharednodes(0);
1057 1058 1059 1060 1061 1062 1063 1064 1065 1066

	if (defined($encap) &&
	    ($encap eq "vtun" || $encap eq "gre" || $encap eq "egre")) {
	    $virtlan->_tunnel(1);
	}

	# Store this stuff as a unit to make it easier to grab later.
	$vlanmember->_delayinfo([ $delay,
				  $bandwidth,
				  $est_bandwidth,
1067
				  $backfill,
1068 1069 1070 1071
				  $lossrate,
				  $rdelay,
				  $rbandwidth,
				  $rest_bandwidth,
1072
				  $rbackfill,
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 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134
				  $rlossrate ]);

	#
	# Ditto for the Q stuff, which is not needed until the delay
	# links are created. There are no "r" params either; Queue
	# stuff is handled in just the to-switch direction.
	#
	$vlanmember->_queueinfo([$vlanmember->q_limit(),
				 $vlanmember->q_maxthresh(),
				 $vlanmember->q_minthresh(),
				 $vlanmember->q_weight(),
				 $vlanmember->q_linterm(),
				 $vlanmember->q_qinbytes(),
				 $vlanmember->q_bytes(),
				 $vlanmember->q_meanpsize(),
				 $vlanmember->q_wait(),
				 $vlanmember->q_setbit(),
				 $vlanmember->q_droptail(),
				 $vlanmember->q_red(),
				 $vlanmember->q_gentle() ]);

	#
	# The trace info is stored along with the QUEUEINFO, but its
	# easier if I split it out.
	#
	$vlanmember->_traceinfo([$vlanmember->traced(),
				 $vlanmember->trace_endnode(),
				 $vlanmember->trace_type(),
				 $vlanmember->trace_expr(),
				 $vlanmember->trace_snaplen(),
				 $vlanmember->trace_db() ]);

	#
	# This will get set on a per-member basis when it is determined
	# that the link is getting a delaynode cause its really being
	# shaped, or because it is being traced or monitored.
	#
	$virtlan->shapedmembers()->{"$vlanmember"} = 0;
	$virtlan->_delayed(0);

	#
	# XXX - Whenever a delay node is inserted, port speeds are set to
	#       the next fastest interface type we have, even if they requested
	#       exactly some speed that can be done without a delay node such
	#       as 10Mbs or 100Mbs. This is a simplification. At some point we
	#       might want to force all the ports along the way to 10Mbs, and
	#       have the delay node worry about delay only, and not bandwidth.
	#       That will be harder to to do in this mess. See companion XXX
	#       below where the delays table is initialized. Initially, we set
	#       the speed to 10Mbs, if a delay node is insterted below, it
	#       resets this to 100Mbs.
	#
	my $portbw = $self->getbandwidth($vlanmember, $virtlan, $bandwidth);
	$self->portbw()->{"$vlanmember"} = $portbw;
	
	$self->printdb("  $vlanname $vlanmember portbw:$portbw - ".
		       "$delay $bandwidth $lossrate ".
		       "$rdelay $rbandwidth $rlossrate\n");
    }
    return 0;
}

1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152
#
# Dump the vtype list.
#
sub GenVirtTypes($)
{
    my ($self) = @_;
    my @types  = $self->VirtTypes();
    
    foreach my $vtype (@types) {
	my $name    = $vtype->name();
	my $weight  = $vtype->weight();
	my @members = split(" ", $vtype->members());

	$self->addvclass("$name $weight @members");
    }
    return 0;
}

1153 1154 1155
#
# Dump the virt nodes.
#
1156
sub GenVirtNodes($)
1157 1158 1159 1160 1161 1162
{
    my ($self) = @_;
    my $experiment = $self->experiment();
    my $pid    = $experiment->pid();
    my $eid    = $experiment->eid();

1163 1164
    foreach my $vname (sort(keys(%{ $self->{'VNODES'} }))) {
	my $vnode = $self->vnodes()->{$vname};
1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
	my $type  = $vnode->type();

	my $subnodestr = "";
	if ($vnode->_issubnode()) {
	    my $parent  = $vnode->_parent();
	    $subnodestr = "subnode_of:$parent";
	}
	my $desirestr = "";
	foreach my $desirename (keys(%{ $vnode->_desires() })) {
	    my $weight = $vnode->_desires()->{$desirename};
	    $desirestr .= " "
		if ($desirestr ne "");
	    $desirestr .= "$desirename:" . sprintf("%f",$weight);
	}
	if ($vnode->_isplabnode() && $experiment->cpu_usage()) {
	    # Yuck
	    $desirestr .= " +load:" . (($experiment->cpu_usage() - 1) / 5.0);
	}
	if ($self->updating()) {
	    $desirestr .= " already_reserved:.2";
	}
	if (defined($vnode->_startloc())) {
	    $desirestr .= " area-" . $vnode->_startloc() . ":1";
	}
	# Require that this vnode be placed onto a pnode that supports
	# the OS it is going to run. However, if the OS is one with a
	# 'path' (like an OSKit kernel), we don't have an entry in
	# osidtoimageid for it, and thus we leave it off of the desire list
	if (defined($vnode->_osinfo())) {
	    my $osinfo = $vnode->_osinfo();

1196 1197 1198 1199 1200 1201
	    if ($vnode->_sharedokay()) {
		my $jailosid = $self->nodejailosid($vnode);
		
		$desirestr .= " OS-$jailosid:1";
	    }
	    elsif (!defined($osinfo->path()) || $osinfo->path() eq "") {
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		$desirestr .= " OS-" . $osinfo->osid() . ":1";
	    }
	}

	#
	# Now the type string, which might include some stuff for
	# simnodes that I do not understand. 
	#
	my $typestr = $type;
	if ($vnode->_issimnode()) {
	    my $query_result =
		DBQueryWarn("select nodeweight from virt_simnode_attributes ".
			    "where pid='$pid' and eid='$eid' and ".
			    "      vname='$vname'");
	    if ($query_result && $query_result->numrows) {
		my ($nodeweight) = $query_result->fetchrow_array();
		if ($nodeweight) {
		    $typestr = "$type:$nodeweight";
		}
	    }
	}
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	$self->addnode("$vname $typestr $subnodestr $desirestr");
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    }

    #
    # Now that the node list is out, set OSID for nodes
    #
    # Huh?
    #
    foreach my $vnode (values(%{ $self->{'VNODES'} })) {
	my $vname  = $vnode->vname();
	my $type   = $vnode->type();
	my $osinfo = $vnode->_osinfo();

	if ($vnode->_issubnode() && $type eq "ixp-bveil" && !defined($osinfo)){
	    my $osinfo = OSinfo->LookupByName("RHL73-IXPHOST");
	    $vnode->_osinfo($osinfo);
	}
    }
    return 0;
}

#
# Print out the fix nodes.
#
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sub GenFixNodes($)
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{
    my ($self) = @_;

    #
    # Be sure NOT to print out nodes which are no longer in the experiment.
    #
    # XXX This must be done last since we create internal nodes above.
    #
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    foreach my $vname (sort(keys(%{ $self->fixednodes() }))) {
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	my $fixed = $self->fixednodes()->{$vname};
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	if ($self->isatoponode($vname) || $self->isadelaynode($vname)) {
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	    $self->addfixed("$vname $fixed");
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	}
    }
    return 0;
}

#
# Print out some summary stats.
#
sub PrintSummaryStats($)
{
    my ($self) = @_;

    # Set estimations
    my $minimum_nodes = $self->counters()->{'physcount'} +
	$self->delaynodecount() / $self->options()->{'delay_capacity'};
    my $maximum_nodes = $self->counters()->{'physcount'} +
	$self->delaynodecount();
    $minimum_nodes = POSIX::ceil($minimum_nodes);

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    # For the caller.
    $self->counters()->{'minimum_nodes'}  = $minimum_nodes;
    $self->counters()->{'maximum_nodes'}  = $maximum_nodes;

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    my $virtnode_count = $self->counters()->{'virtcount'};
    my $simnode_count  = $self->counters()->{'simcount'};