Routing messages by subject

Routing messages by subject

Y::Notifier - Implementation - Routing messages by subject

Y::IDTree maps lists (of names) to numeric identifiers

The Y::IDTree object consists of nodes, which contain the ids, connected by branches, which hold the labels
API

my $tree = new Y::IDTree();
@path is the result of split(/\./, $subject)
Any @path can contain wildcards
These treat wildcards in @path as literal text

$tree->Add($id, @path);
$tree->Remove($id, @path);

these recognise and act on wildcards in @path

my @ids = $tree->FindAt(@path);
my @ids = $tree->FindOutside(@path);
my @ids = $tree->FindInside(@path);

Used by

Server to map subjects to client ids (thence to sockets)
Client library to map recieved messages to individual callbacks
Security library to validate subjects against allowed subjects

Later re-written in C/XS

Y::Notifier - Implementation - Routing messages by subject