libvtop.pm.in 167 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
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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!
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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@EXPORT_OK = qw($VTOP_FLAGS_UPDATE $VTOP_FLAGS_VERBOSE $VTOP_FLAGS_FIXNODES
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		$VTOP_FLAGS_IMPOTENT $VTOP_FLAGS_REGRESSION);
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#
# Create an object representing the stuff we need to create the vtop file.
#
sub Create($$$)
{
    my ($class, $experiment, $flags) = @_;

    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;
    $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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    $self->{'PNODES'}      = {};
    $self->{'FIXEDNODES'}  = {};
    $self->{'CURRENT_V2P'} = {};
    $self->{'CURRENT_P2V'} = {};
    $self->{'CURRENT_V2V'} = {};

    # Below is for interpretation of assign results.
    $self->{'SOLUTION'}    = {};
    $self->{'OLDRSRVCLEAN'}= 0;
    $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 $_[0]->{'EXPERIMENT'}; }
sub virtexperiment($)   { 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(%{ $_[0]->{'NEWRESERVED'} }); }
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sub norecover($)        { 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($$)    { return exists($_[0]->delaynodes()->{$_[1]}); }
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# Debug output.
sub verbose($)		{ return $_[0]->flags() & $VTOP_FLAGS_VERBOSE; }
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sub updating($)		{ return $_[0]->flags() & $VTOP_FLAGS_UPDATE; }
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sub fixcurrent($)	{ return $_[0]->flags() & $VTOP_FLAGS_FIXNODES; }
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sub impotent($)		{ return $_[0]->flags() & $VTOP_FLAGS_IMPOTENT; }
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sub regression($)	{ return $_[0]->flags() & $VTOP_FLAGS_REGRESSION; }
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sub printdb($$)		{ 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 $_[0]->counter("remotecount"); }
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###############################################################################
# Virtual Nodes. A separate package so we can create objects for each one
# and then add local stuff to them.
#
package libvtop::virt_node;
use Carp;
use vars qw($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.
    #
    foreach my $vtype ($self->VirtTypes()) {
	my @members = split(" ", $vtype->members());

	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;

    return 0
	if (!$self->fixcurrent());

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

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

    foreach my $pnode (@nodelist) {
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	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;

636 637 638 639 640 641 642 643 644
	#
	# 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()) {
645
	    $self->fixednodes()->{$vname} = $pnode->node_id();
646
	    $self->counters()->{'reserved_virtcount'}++;
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664

	    # 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;
	    }

	    #
	    # Record the mappings. 
	    #
	    $self->current_v2v()->{$vname} = $pnode;
	    $self->current_v2p()->{$vname} = $ppnode;
	    push(@{ $self->current_p2v()->{$ppnode->node_id()} }, $vname);
	    
	    # Mark the node as unused until later.
	    $pnode->_reuse("unused");
	    $ppnode->_reuse("unused");
665 666 667 668 669 670 671 672 673 674
	}
	else {
	    #
	    # All the sim stuff is bit rotting cause no one understands it.
	    #
	    if ($rsrv->{'erole'} eq TBDB_RSRVROLE_SIMHOST) {
		tberror("Cannot update sim nodes yet!\n");
		return -1;
	    }
	    else {
675
		$self->fixednodes()->{$vname} = $pnode->node_id();
676
		$self->counters()->{'reserved_physcount'}++;
677 678 679 680 681 682 683 684 685 686

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

		$self->printdb("current v2p: $node_id -> $vname\n");
687 688 689 690 691 692
	    }
	}
    }
    return 0;
}

693 694 695 696 697 698
sub LoadVirtNodes($)
{
    my ($self) = @_;

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

699 700 701 702
    my $pid    = $self->pid();
    my $eid    = $self->eid();
    my $table  = $self->virt_nodes();

703
    foreach my $virt_node ($table->Rows()) {
704 705 706 707
	my $vnode    = libvtop::virt_node->Create($self, $virt_node);
	my $vname    = $vnode->vname();
	my $desires  = {};
	my $startloc = undef;
708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726

	# Other fields we need.
	my $ips     = $vnode->ips();
	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.
727
	my $isvtyped= 0;
728
	my $isded   = 0;
729 730 731 732 733 734

	# If we have a real type or auxtype ...
	my $nodetype = NodeType->LookupAny($type);
	if (!defined($nodetype)) {
	    my $vtype = $self->virttypeisvtype($type);
	    if (!defined($vtype)) {
735
		warn("Improper type $type for node $vnode!\n");
736 737 738 739 740 741 742 743 744 745
		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)) {
746
		warn("Improper type $vtypename in vtypes for node $vnode!\n");
747 748
		return -1;
	    }
749
	    $isvtyped = 1;
750
	}
751 752
	$vnode->_typeinfo($nodetype);
	
753 754 755 756 757 758
	$isremote = $nodetype->isremotenode();
	$isvirt   = $nodetype->isvirtnode();
	$issub    = $nodetype->issubnode();
	$isplab   = $nodetype->isplabdslice();
	$issim    = $nodetype->issimnode();
	$isdyn    = $nodetype->isdynamic();
759
	$isded    = $nodetype->isdedicatedremote();
760

761 762 763
	# Mark this as being a virtual typed node.
	$vnode->_isvtyped($isvtyped);

764 765 766 767 768 769 770 771
	# 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);
772
	$vnode->_isdedremote($isded);
773

774 775
	# The mapped osname to actual osinfo structure.
	$vnode->_osinfo(undef);
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794
	# 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 "") {
795
		warn("Subnode $vname must be fixed to its parent!\n");
796 797 798 799 800 801 802 803 804
		return -1;
	    }
	    $vnode->_parent($fixed);
	    $vnode->fixed("");
	    undef($fixed);
	}

	# Can fixed really get set to ""?
	if (defined($fixed) && $fixed ne "") {
805
	    # Store the name since we use FIXED_NODES for delay nodes too.
806
	    $self->fixednodes()->{$vname} = $fixed;
807 808 809 810 811 812 813
	}

	$self->printdb("  $vname type:$type ips:$ips\n");
	$self->printdb("         isrem:$isremote isvirt:$isvirt ");
	$self->printdb("fixed:$fixed")
	    if (defined($fixed));
	$self->printdb("\n");
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919
	
	# 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);
	}

	$self->{'COUNTERS'}->{'simcount'}++
	    if ($issim);
	$self->{'COUNTERS'}->{'remotecount'}++
	    if ($isremote);
	$self->{'COUNTERS'}->{'virtcount'}++
	    if ($isvirt);
	$self->{'COUNTERS'}->{'plabcount'}++
	    if ($isplab);
	$self->{'COUNTERS'}->{'physcount'}++
	    if (!$issim && !$isvirt);

	# stats
	my @iplist  = split(" ", $ips);
	my $ipcount = scalar(@iplist);

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

	# Take apart the IP list.
	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);
	}

	#
	# Add in desires.
	#
	foreach my $desire ($self->virt_desires()->Rows()) {
	    next
		if ($desire->vname() ne $vname);
	    $desires->{$desire->desire()} = $desire->weight();
	}
	$vnode->_desires($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);

	# 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;
920
	    $virtlan->_accesspoint(undef);
921 922 923 924 925 926 927 928 929
	}

	# 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.
930
	$virtlan->addmember($vlanmember);
931 932 933 934 935 936 937 938

	# 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();
939
	my $backfill       = $vlanmember->backfill();
940 941 942 943
	my $lossrate       = $vlanmember->lossrate();
	my $rdelay         = $vlanmember->rdelay();
	my $rbandwidth     = $vlanmember->rbandwidth();
	my $rest_bandwidth = $vlanmember->rest_bandwidth();
944
	my $rbackfill      = $vlanmember->rbackfill();
945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997
	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();

	#
	# 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());

	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,
998
				  $backfill,
999 1000 1001 1002
				  $lossrate,
				  $rdelay,
				  $rbandwidth,
				  $rest_bandwidth,
1003
				  $rbackfill,
1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 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 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065
				  $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;
}

1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083
#
# 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;
}

1084 1085 1086
#
# Dump the virt nodes.
#
1087
sub GenVirtNodes($)
1088 1089 1090 1091 1092 1093
{
    my ($self) = @_;
    my $experiment = $self->experiment();
    my $pid    = $experiment->pid();
    my $eid    = $experiment->eid();

1094 1095
    foreach my $vname (sort(keys(%{ $self->{'VNODES'} }))) {
	my $vnode = $self->vnodes()->{$vname};
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 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148
	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();

	    if (!defined($osinfo->path()) || $osinfo->path() eq "") {
		$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";
		}
	    }
	}
1149
	$self->addnode("$vname $typestr $subnodestr $desirestr");
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172
    }

    #
    # 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.
#
1173
sub GenFixNodes($)
1174 1175 1176 1177 1178 1179 1180 1181
{
    my ($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.
    #
1182
    foreach my $vname (sort(keys(%{ $self->fixednodes() }))) {
1183
	my $fixed = $self->fixednodes()->{$vname};
1184 1185
	
	if ($self->isatoponode($vname) || $self->isadelaynode($vname)) {
1186
	    $self->addfixed("$vname $fixed");
1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205
	}
    }
    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);

1206 1207 1208 1209
    # For the caller.
    $self->counters()->{'minimum_nodes'}  = $minimum_nodes;
    $self->counters()->{'maximum_nodes'}  = $maximum_nodes;

1210 1211
    my $virtnode_count = $self->counters()->{'virtcount'};
    my $simnode_count  = $self->counters()->{'simcount'};
1212 1213
    my $reserved_virtcount = $self->counters()->{'reserved_virtcount'};
    my $reserved_physcount = $self->counters()->{'reserved_physcount'};
1214 1215 1216 1217

    print "Minimum nodes   = $minimum_nodes\n";
    print "Maximum nodes   = $maximum_nodes\n";
    if ($virtnode_count) {
1218
	print "Virtual nodes     = $virtnode_count\n";
1219 1220 1221 1222
    }
    if ($simnode_count) {
	print "Simulated nodes   = $simnode_count\n";
    }
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    if ($reserved_virtcount) {
	print "Reserved vnodes   = $reserved_virtcount\n";
    }
    if ($reserved_physcount) {
	print "Reserved pnodes   = $reserved_physcount\n";
    }
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    return 0;
}

#
# Dump the virt lans
#
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sub GenVirtLans($)
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{
    my ($self) = @_;
    my $experiment = $self->experiment();
    my $pid    = $experiment->pid();
    my $eid    = $experiment->eid();

    my $errors	         = 0;
    my %osdoesveth       = ();
    my %osdoesvlan       = ();
    my %osdoesmlink      = ();
    my %osdoeslinkdelays = ();

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    foreach my $vname (sort(keys(%{ $self->{'VLANS'} }))) {
	my $vlan = $self->vlans()->{$vname};
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	# Tunnels are handled elsewhere.
	next
	    if ($vlan->_tunnel());

	my @members = $vlan->memberlist();
	$self->printdb("$vname: " . join(" ",@members) . "\n");
	
	my $simnodes     = 0;
	my $realnodes    = 0;
	my $virtnodes    = 0;
	my $nonvirtnodes = 0;
	my %nodesdo      = ("alias"=>0, "veth"=>0, "vlan"=>0, "ldelay"=>0);
	my $trivial_ok   = 0;
	my $emulated     = $vlan->_emulated();
        my $uselinkdelay = $vlan->_uselinkdelay();
	my $mustdelay    = $vlan->_mustdelay();
	my $nobwshaping  = $vlan->_nobwshaping();
	my $protocol     = $vlan->_protocol();
	my $encap        = $vlan->_encapstyle();

	#
	# Count the types of nodes (simulated, virtual, real, etc.) in this
	# LAN
	#
	foreach my $member (@members) {
	    my $osid;
	    my $virtnode = $member->virt_node();

	    if ($virtnode->_issimnode()) {
		$simnodes++;

		if (defined($virtnode->_osinfo())) {
		    $osid = $virtnode->_osinfo()->osid();
		} else {
		    $osid = "<SIM>";
		}
		# XXX apparently all simnodes can do veths
		if (!exists($osdoesmlink{$osid})) {
		    $osdoesmlink{$osid} = 0;
		    $osdoesveth{$osid} = 1;
		    $osdoesvlan{$osid} = 0;
		    $osdoeslinkdelays{$osid} = 1;
		}
	    } else {
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		if ($virtnode->_isvirtnode() && $virtnode->type() ne "pcfed") {
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