X-Git-Url: http://gb7djk.dxcluster.net/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FRoute%2FNode.pm;h=6f8de6dee1ca0431d37ef25c757877fc67e3a797;hb=9a31104f31ce5d80a659dea3de9dbf9a5d46ef8e;hp=9e1f3c04fecf7ba100ca35ed4c5594dc82578e91;hpb=b67b50de92dbf61ce939b42f7c74e30dc58eba41;p=spider.git

diff --git a/perl/Route/Node.pm b/perl/Route/Node.pm
index 9e1f3c04..6f8de6de 100644
--- a/perl/Route/Node.pm
+++ b/perl/Route/Node.pm
@@ -14,139 +14,180 @@ use Route::User;
 
 use strict;
 
-use vars qw(%list %valid @ISA $max);
+use vars qw($VERSION $BRANCH);
+$VERSION = sprintf( "%d.%03d", q$Revision$ =~ /(\d+)\.(\d+)/ );
+$BRANCH = sprintf( "%d.%03d", q$Revision$ =~ /\d+\.\d+\.(\d+)\.(\d+)/  || (0,0));
+$main::build += $VERSION;
+$main::branch += $BRANCH;
+
+use vars qw(%list %valid @ISA $max $filterdef);
 @ISA = qw(Route);
 
 %valid = (
-		  parent => '0,Parent Calls,parray',
+		  dxchan => '0,DXChannel List,parray',
 		  nodes => '0,Nodes,parray',
 		  users => '0,Users,parray',
+		  usercount => '0,User Count',
 		  version => '0,Version',
+		  newroute => '0,New Routing?,yesno',
 );
 
+$filterdef = $Route::filterdef;
 %list = ();
 $max = 0;
 
 sub count
 {
-	my $n = scalar %list;
+	my $n = scalar (keys %list);
 	$max = $n if $n > $max;
 	return $n;
 }
 
 sub max
 {
+	count();
 	return $max;
 }
 
+# link a node to this node and mark the route as available thru 
+# this dxchan, any users must be linked separately
 #
-# 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) 
+# call as $node->link_node($neighbour, $dxchan);
 #
 
-sub add
+sub link_node
 {
-	my $parent = shift;
-	my $call = uc shift;
-	my $self = get($call);
-	if ($self) {
-		$self->_addparent($parent->{call});
-		return undef;
-	}
-	$parent->_addnode($call);
-	$self = $parent->new($call, @_);
-	return $self;
+	my ($self, $neighbour, $dxchan) = @_;
+
+	my $r = $neighbour->is_empty('dxchan');
+	$self->_addlist('nodes', $neighbour);
+	$neighbour->_addlist('nodes', $self);
+	$neighbour->_addlist('dxchan', $dxchan);
+	return $r ? ($neighbour) : ();
 }
 
-#
-# this routine is the opposite of 'add' above.
-#
-# It will return an object if (and only if) this 'del' will remove
-# this object completely
+# unlink a node from a neighbour and remove any
+# routes, if this node becomes orphaned (no routes
+# and no nodes) then return it 
 #
 
-sub del
+sub unlink_node
 {
-	my $self = shift;
-	my $pref = shift;
+	my ($self, $neighbour, $dxchan) = @_;
+	$self->_dellist('nodes', $neighbour);
+	$neighbour->_dellist('nodes', $self);
+	$neighbour->_dellist('dxchan', $dxchan) if $dxchan;
+	return $neighbour->is_empty('dxchan') ? ($neighbour) : ();
+}
+
+sub remove_route
+{
+	my ($self, $neighbour, $dxchan) = @_;
 
-	# delete parent from this call's parent list
-	my $pcall = $pref->{call};
-	my $ref = $self->_delparent($pcall);
-	my @nodes;
+	# cut the dxchan link
+	# cut the node link
+	my @rout;
+	push @rout, $self->unlink_node($neighbour, $dxchan);
+	dbg("Orphanning $neighbour->{call}") if isdbg('routelow');
 	
-	# is this the last connection?
-	$self->_del_users;
-	unless (@$ref) {
-		push @nodes, $self->del_nodes;
-		delete $list{$self->{call}};
+	# then run down the tree removing this dxchan link from
+	# all the referenced nodes that use this interface
+	my %visited;
+	my @in = map { Route::Node::get($_) } $neighbour->nodes;
+	foreach my $r (@in) {
+		next unless $r;
+		next if $visited{$r->call};
+		my ($o) = $r->del_dxchan($self);
+		if ($o) {
+			dbg("Orphanning $_->{call}") if isdbg('routelow');
+			push @rout, $o;
+		}
+		push @in, map{ Route::Node::get($_) } $r->nodes;
+		$visited{$r->call} = $r;
 	}
-	push @nodes, $self;
-	return @nodes;
+	
+	# in @rout there should be a list of orphaned (in dxchan terms)
+	# nodes. Now go thru and make sure that all their links are
+	# broken (they should be, but this is to check).
+	
+	foreach my $r (@rout) {
+		my @nodes = map { Route::Node::get($_)} $r->nodes;
+		for (@nodes) {
+			next unless $_;
+			dbg("Orphaned node $_->{call}: breaking link to $_->{call}") if isdbg('routelow');
+			$r->unlink_node($_);
+		}
+	}
+	return @rout;
 }
 
+# add a user to this node
+# returns Route::User if it is a new user;
+sub add_user
+{
+	my ($self, $uref) = @_;
+	my $r = $uref->is_empty('nodes');
+	$self->_addlist('users', $uref);
+	$uref->_addlist('nodes', $self);
+	$self->{usercount} = scalar @{$self->{users}};
+	return $r ? ($uref) : ();
+}
 
-sub _del_users
+# delete a user from this node
+sub del_user
 {
-	my $self = shift;
-	for (@{$self->{users}}) {
-		my $ref = Route::User::get($_);
-		$ref->del($self) if $ref;
-	}
-	$self->{users} = [];
+	my ($self, $uref) = @_;
+
+	$self->_dellist('users', $uref);
+	$uref->_dellist('nodes', $self);
+	$self->{usercount} = scalar @{$self->{users}};
+	return $uref->is_empty('nodes') ? ($uref) : ();
+}
+
+# add a single dxchan link
+sub add_dxchan
+{
+	my ($self, $dxchan) = @_;
+	return $self->_addlist('dxchan', $dxchan);
 }
 
-# remove all sub nodes from this parent
-sub del_nodes
+# remove a single dxchan link
+sub del_dxchan
+{
+	my ($self, $dxchan) = @_;
+	return $self->_dellist('dxchan', $dxchan);
+}
+
+sub usercount
 {
 	my $self = shift;
-	my @nodes;
-	
-	for (@{$self->{nodes}}) {
-		next if $self->{call} eq $_;
-		push @nodes, $self->del_node($_);
+	if (@_ && @{$self->{users}} == 0) {
+		$self->{usercount} = shift;
 	}
-	return @nodes;
+	return $self->{usercount};
 }
 
-# add a user to this node
-sub add_user
+sub users
 {
 	my $self = shift;
-	my $ucall = shift;
-	$self->_adduser($ucall);
-	
-	my $uref = Route::User::get($ucall);
-	return $uref ? () : (Route::User->new($ucall, $self->{call}, @_));
+	return @{$self->{users}};
 }
 
-# delete a user from this node
-sub del_user
+sub nodes
 {
 	my $self = shift;
-	my $ucall = shift;
-	my $ref = Route::User::get($ucall);
-	$self->_deluser($ucall);
-	return ($ref->del($self)) if $ref;
-	return ();
+	return @{$self->{nodes}};
 }
 
-# delete a node from this node (ie I am a parent) 
-sub del_node
+sub unlink_all_users
 {
 	my $self = shift;
-	my $ncall = shift;
-    $self->_delnode($ncall);
-	my $ref = get($ncall);
-	return ($ref->del($self)) if $ref;
-	return ();
+	my @rout;
+	foreach my $u (${$self->{users}}) {
+		my $uref = Route::User::get($u);
+		push @rout, $self->del_user($uref) if $uref;
+	}
+	return @rout;
 }
 
 sub new
@@ -157,60 +198,37 @@ sub new
 	confess "already have $call in $pkg" if $list{$call};
 	
 	my $self = $pkg->SUPER::new($call);
-	$self->{parent} = ref $pkg ? [ $pkg->{call} ] : [ ];
-	$self->{version} = shift;
-	$self->{flags} = shift;
+	$self->{dxchan} = ref $pkg ? [ $pkg->{call} ] : [ ];
+	$self->{version} = shift || 5000;
+	$self->{flags} = shift || Route::here(1);
 	$self->{users} = [];
 	$self->{nodes} = [];
 	
 	$list{$call} = $self;
+	dbg("creating Route::Node $self->{call}") if isdbg('routelow');
 	
 	return $self;
 }
 
-sub get
-{
-	my $call = shift;
-	$call = shift if ref $call;
-	return $list{uc $call};
-}
-
-sub _addparent
-{
-	my $self = shift;
-    return $self->_addlist('parent', @_);
-}
-
-sub _delparent
+sub delete
 {
 	my $self = shift;
-    return $self->_dellist('parent', @_);
+	dbg("deleting Route::Node $self->{call}") if isdbg('routelow');
+	delete $list{$self->{call}};
 }
 
-
-sub _addnode
-{
-	my $self = shift;
-    return $self->_addlist('nodes', @_);
-}
-
-sub _delnode
-{
-	my $self = shift;
-    return $self->_dellist('nodes', @_);
-}
-
-
-sub _adduser
+sub get
 {
-	my $self = shift;
-    return $self->_addlist('users', @_);
+	my $call = shift;
+	$call = shift if ref $call;
+	my $ref = $list{uc $call};
+	dbg("Failed to get Node $call" ) if !$ref && isdbg('routerr');
+	return $ref;
 }
 
-sub _deluser
+sub get_all
 {
-	my $self = shift;
-    return $self->_dellist('users', @_);
+	return values %list;
 }
 
 sub DESTROY
@@ -219,7 +237,8 @@ sub DESTROY
 	my $pkg = ref $self;
 	my $call = $self->{call} || "Unknown";
 	
-	dbg('route', "destroying $pkg with $call");
+	dbg("destroying $pkg with $call") if isdbg('routelow');
+	$self->unlink_all_users if @{$self->{users}};
 }
 
 #
@@ -229,19 +248,16 @@ sub DESTROY
 sub AUTOLOAD
 {
 	no strict;
-
-	my $self = shift;
-	$name = $AUTOLOAD;
+	my $name = $AUTOLOAD;
 	return if $name =~ /::DESTROY$/;
-	$name =~ s/.*:://o;
+	$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
-#	print "AUTOLOAD: $AUTOLOAD\n";
-#	*{$AUTOLOAD} = sub {my $self = shift; @_ ? $self->{$name} = shift : $self->{$name}} ;
-    @_ ? $self->{$name} = shift : $self->{$name} ;
+        *$AUTOLOAD = sub {$_[0]->{$name} = $_[1] if @_ > 1; return $_[0]->{$name}};
+        goto &$AUTOLOAD;
 }
 
 1;