#
# Copyright (c) 2001 Dirk Koopman G1TLH
#
-# $Id$
-#
+#
+#
package Route::Node;
use DXDebug;
use Route;
+use Route::User;
+use DXUtil;
use strict;
-use vars qw(%list %valid @ISA $me);
+use vars qw(%list %valid @ISA $max $filterdef $obscount);
@ISA = qw(Route);
%valid = (
- dxchancall => '0,DXChannel Calls,parray',
- parent => '0,Parent Calls,parray',
+ K => '9,Seen on PC92K,yesno',
+ nodes => '0,Nodes,parray',
+ users => '0,Users,parray',
+ usercount => '0,User Count',
version => '0,Version',
+ build => '0,Build',
+ handle_xml => '0,Using XML,yesno',
+ lastmsg => '0,Last Route Msg,atime',
+ lastid => '0,Last Route MsgID',
+ do_pc9x => '0,Uses pc9x,yesno',
+ via_pc92 => '0,In via pc92?,yesno',
+ obscount => '0,Obscount',
+ last_PC92C => '9,Last PC92C',
+ PC92C_dxchan => '9,PC92C hops,phash',
);
+$filterdef = $Route::filterdef;
%list = ();
+$max = 0;
+$obscount = 3;
+
+sub count
+{
+ my $n = scalar (keys %list);
+ $max = $n if $n > $max;
+ return $n;
+}
+
+sub max
+{
+ count();
+ return $max;
+}
+
+#
+# this routine handles the possible adding of an entry in the routing
+# table. It will only add an entry if it is new. It may have all sorts of
+# other side effects which may include fixing up other links.
+#
+# It will return a node object if (and only if) it is a completely new
+# object with that callsign. The upper layers are expected to do something
+# sensible with this!
+#
+# called as $parent->add(call, dxchan, version, flags)
+#
+
+sub add
+{
+ my $parent = shift;
+ my $call = uc shift;
+ confess "Route::add trying to add $call to myself" if $call eq $parent->{call};
+ my $self = get($call);
+ if ($self) {
+ $self->_addparent($parent);
+ $parent->_addnode($self);
+ return undef;
+ }
+ $self = $parent->new($call, @_);
+ $parent->_addnode($self);
+ dbg("CLUSTER: node $call added") if isdbg('cluster');
+ return $self;
+}
+
+#
+# this routine is the opposite of 'add' above.
+#
+# It will return an object if (and only if) this 'del' will remove
+# this object completely
+#
+
+sub del
+{
+ my $self = shift;
+ my $pref = shift;
+
+ # delete parent from this call's parent list
+ $pref->_delnode($self);
+ $self->_delparent($pref);
+ my @nodes;
+ my $ncall = $self->{call};
+
+ # is this the last connection, I have no parents anymore?
+ unless (@{$self->{parent}}) {
+ foreach my $rcall (@{$self->{nodes}}) {
+ next if grep $rcall eq $_, @_;
+ my $r = Route::Node::get($rcall);
+ push @nodes, $r->del($self, $ncall, @_) if $r;
+ }
+ $self->_del_users;
+ delete $list{$ncall};
+ push @nodes, $self;
+ dbg("CLUSTER: node $ncall deleted") if isdbg('cluster');
+ }
+ return @nodes;
+}
+
+# this deletes this node completely by grabbing the parents
+# and deleting me from them, then deleting me from all the
+# dependent nodes.
+sub delete
+{
+ my $self = shift;
+ my @out;
+ my $ncall = $self->{call};
+
+ # get rid of users and parents
+ $self->_del_users;
+ if (@{$self->{parent}}) {
+ foreach my $call (@{$self->{parent}}) {
+ my $parent = Route::Node::get($call);
+ push @out, $parent->del($self) if $parent;
+ }
+ }
+ # get rid of my nodes
+ push @out, $self->del_nodes;
+ # this only happens if we a orphan with no parents
+ if ($list{$ncall}) {
+ push @out, $self;
+ delete $list{$ncall};
+ }
+ return @out;
+}
+
+sub del_nodes
+{
+ my $parent = shift;
+ my @out;
+ foreach my $rcall (@{$parent->{nodes}}) {
+ my $r = get($rcall);
+ push @out, $r->del($parent, $parent->{call}, @_) if $r;
+ }
+ return @out;
+}
+
+sub _del_users
+{
+ my $self = shift;
+ for (@{$self->{users}}) {
+ my $ref = Route::User::get($_);
+ $ref->del($self) if $ref;
+ }
+ $self->{users} = [];
+}
+
+# add a user to this node
+sub add_user
+{
+ my $self = shift;
+ my $ucall = shift;
+ my $here = shift;
+ my $ip = shift;
+
+ confess "Trying to add NULL User call to routing tables" unless $ucall;
+
+ my $uref = Route::User::get($ucall);
+ my @out;
+ if ($uref) {
+ @out = $uref->addparent($self);
+ } else {
+ $uref = Route::User->new($ucall, $self->{call}, $here, $ip);
+ @out = $uref;
+ }
+ $self->_adduser($uref);
+ $self->{usercount} = scalar @{$self->{users}};
+
+ return @out;
+}
+
+# delete a user from this node
+sub del_user
+{
+ my $self = shift;
+ my $ref = shift;
+ my @out;
+
+ if ($ref) {
+ @out = $self->_deluser($ref);
+ $ref->del($self);
+ } else {
+ confess "tried to delete non-existant $ref->{call} from $self->{call}";
+ }
+ $self->{usercount} = scalar @{$self->{users}};
+ return @out;
+}
+
+# is a user on this node
+sub is_user
+{
+ my $self = shift;
+ my $call = shift;
+ return scalar grep {$_ eq $call} @{$self->{users}};
+}
+
+sub usercount
+{
+ my $self = shift;
+ if (@_ && @{$self->{users}} == 0) {
+ $self->{usercount} = shift;
+ }
+ return $self->{usercount};
+}
+
+sub users
+{
+ my $self = shift;
+ return @{$self->{users}};
+}
-sub init
+sub nodes
{
- $me = Route::Node->new(@_);
+ my $self = shift;
+ return @{$self->{nodes}};
}
+sub rnodes
+{
+ my $self = shift;
+ my @out;
+ foreach my $call (@{$self->{nodes}}) {
+ next if grep $call eq $_, @_;
+ push @out, $call;
+ my $r = get($call);
+ push @out, $r->rnodes($call, @_) if $r;
+ }
+ return @out;
+}
+
+# this takes in a list of node and user calls (not references) from
+# a config type update for a node and returns
+# the differences as lists of things that have gone away
+# and things that have been added.
+sub calc_config_changes
+{
+ my $self = shift;
+ my %nodes = map {$_ => 1} @{$self->{nodes}};
+ my %users = map {$_ => 1} @{$self->{users}};
+ my $cnodes = shift;
+ my $cusers = shift;
+ if (isdbg('route')) {
+ dbg("ROUTE: start calc_config_changes");
+ dbg("ROUTE: incoming nodes on $self->{call}: " . join(',', sort @$cnodes));
+ dbg("ROUTE: incoming users on $self->{call}: " . join(',', sort @$cusers));
+ dbg("ROUTE: existing nodes on $self->{call}: " . join(',', sort keys %nodes));
+ dbg("ROUTE: existing users on $self->{call}: " . join(',', sort keys %users));
+ }
+ my (@dnodes, @dusers, @nnodes, @nusers);
+ push @nnodes, map {my @r = $nodes{$_} ? () : $_; delete $nodes{$_}; @r} @$cnodes;
+ push @dnodes, keys %nodes;
+ push @nusers, map {my @r = $users{$_} ? () : $_; delete $users{$_}; @r} @$cusers;
+ push @dusers, keys %users;
+ if (isdbg('route')) {
+ dbg("ROUTE: deleted nodes on $self->{call}: " . join(',', sort @dnodes));
+ dbg("ROUTE: deleted users on $self->{call}: " . join(',', sort @dusers));
+ dbg("ROUTE: added nodes on $self->{call}: " . join(',', sort @nnodes));
+ dbg("ROUTE: added users on $self->{call}: " . join(',', sort @nusers));
+ dbg("ROUTE: end calc_config_changes");
+ }
+ return (\@dnodes, \@dusers, \@nnodes, \@nusers);
+}
+
+
sub new
{
my $pkg = shift;
my $call = uc shift;
+
confess "already have $call in $pkg" if $list{$call};
-
+
my $self = $pkg->SUPER::new($call);
- $self->{dxchancall} = [ ];
- $self->{parent} = [ ];
- $self->{version} = shift;
-
+ $self->{parent} = ref $pkg ? [ $pkg->{call} ] : [ ];
+ $self->{version} = shift || 5401;
+ $self->{flags} = shift || Route::here(1);
+ $self->{users} = [];
+ $self->{nodes} = [];
+ $self->{PC92C_dxchan} = {};
+ my $ip = shift;
+ $self->{ip} = $ip if defined $ip;
+ $self->reset_obs; # by definition
+
$list{$call} = $self;
-
+
return $self;
}
{
my $call = shift;
$call = shift if ref $call;
- return $list{uc $call};
+ my $ref = $list{uc $call};
+ dbg("ROUTE: Failed to get Node $call" ) if !$ref && isdbg('routerr');
+ return $ref;
+}
+
+sub get_all
+{
+ return values %list;
+}
+
+sub _addparent
+{
+ my $self = shift;
+ return $self->_addlist('parent', @_);
+}
+
+sub _delparent
+{
+ my $self = shift;
+ return $self->_dellist('parent', @_);
}
-sub adddxchan
+
+sub _addnode
+{
+ my $self = shift;
+ return $self->_addlist('nodes', @_);
+}
+
+sub _delnode
{
my $self = shift;
- $self->_addlist('dxchancall', @_);
+ return $self->_dellist('nodes', @_);
}
-sub deldxchan
+
+sub _adduser
{
my $self = shift;
- $self->_dellist('dxchancall', @_);
+ return $self->_addlist('users', @_);
}
-sub addparent
+sub _deluser
{
my $self = shift;
- $self->_addlist('parent', @_);
+ return $self->_dellist('users', @_);
+}
+
+sub dec_obs
+{
+ my $self = shift;
+ $self->{obscount}--;
+ return $self->{obscount};
+}
+
+sub reset_obs
+{
+ my $self = shift;
+ $self->{obscount} = $obscount;
+}
+
+sub measure_pc9x_t
+{
+ my $parent = shift;
+ my $t = shift;
+ my $lastid = $parent->{lastid};
+ if ($lastid) {
+ return ($t < $lastid) ? $t+86400-$lastid : $t - $lastid;
+ } else {
+ return 86400;
+ }
+}
+
+sub PC92C_dxchan
+{
+ my $parent = shift;
+ my $call = shift;
+ my $hops = shift;
+ if ($call && $hops) {
+ $hops =~ s/^H//;
+ $parent->{PC92C_dxchan}->{$call} = $hops;
+ return;
+ }
+ return (%{$parent->{PC92C_dxchan}});
}
-sub delparent
+sub DESTROY
{
my $self = shift;
- $self->_dellist('parent', @_);
+ my $pkg = ref $self;
+ my $call = $self->{call} || "Unknown";
+
+ dbg("ROUTE: destroying $pkg with $call") if isdbg('routelow');
+}
+
+#
+# generic AUTOLOAD for accessors
+#
+
+sub AUTOLOAD
+{
+ no strict;
+ my $name = $AUTOLOAD;
+ return if $name =~ /::DESTROY$/;
+ $name =~ s/^.*:://o;
+
+ confess "Non-existant field '$AUTOLOAD'" unless $valid{$name} || $Route::valid{$name};
+
+ # this clever line of code creates a subroutine which takes over from autoload
+ # from OO Perl - Conway
+ *$AUTOLOAD = sub {$_[0]->{$name} = $_[1] if @_ > 1; return $_[0]->{$name}};
+ goto &$AUTOLOAD;
}
1;
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