1 package Object::Remote::Logging::Router;
4 use Scalar::Util qw(weaken);
7 with 'Log::Contextual::Role::Router';
8 with 'Object::Remote::Role::LogForwarder';
10 #lookup table for package names that should not
11 #be forwarded across Object::Remote connections
12 has _connections => ( is => 'ro', required => 1, default => sub { [] } );
13 has _remote_metadata => ( is => 'rw' );
16 my ($self, $controller, $importer, $spec) = @_;
22 my ($self, %metadata) = @_;
23 my $package = $metadata{package};
24 my $level = $metadata{level};
25 my $is_level = "is_$level";
29 foreach my $selector (@{$self->_connections}) {
30 unless(defined $selector) {
35 foreach my $logger ($selector->($package, { %metadata })) {
36 next unless defined $logger;
37 next unless $logger->$is_level;
38 push(@loggers, $logger);
42 $self->_clean_connections if $need_clean;
47 #overloadable so a router can invoke a logger
50 my ($self, $logger, $level_name, $content, $metadata) = @_;
51 #Invoking the logger like this gets all available data to the
52 #logging object with out losing any information from the structure.
53 #This is not a backwards compatible way to invoke the loggers
54 #but it enables a lot of flexibility in the logger.
55 #The l-c router could have this method invoke the logger in
56 #a backwards compatible way and router sub classes invoke
57 #it in non-backwards compatible ways if desired
58 $logger->$level_name($content, $metadata);
61 #overloadable so forwarding can have the updated
62 #metadata but does not have to wrap get_loggers
63 #which has too many drawbacks
64 sub _deliver_message {
65 my ($self, $level, $generator, $args, $metadata) = @_;
66 my @loggers = $self->_get_loggers(%$metadata);
68 return unless @loggers > 0;
69 #this is the point where the user provided log message
70 #code block is executed
71 my @content = $generator->(@$args);
72 foreach my $logger (@loggers) {
73 $self->_invoke_logger($logger, $level, \@content, $metadata);
77 sub handle_log_request {
78 my ($self, $metadata_in, $generator, @args) = @_;
79 my %metadata = %{$metadata_in};
80 my $level = $metadata{level};
81 my $package = $metadata{package};
84 #caller_level is useless when log forwarding is in place
85 #so we won't tempt people with using it for now - access
86 #to caller level will be available in the future
87 my $caller_level = delete $metadata{caller_level};
88 $metadata{object_remote} = $self->_remote_metadata;
89 $metadata{timestamp} = time;
91 $metadata{hostname} = hostname;
93 my @caller_info = caller($caller_level);
94 $metadata{filename} = $caller_info[1];
95 $metadata{line} = $caller_info[2];
97 @caller_info = caller($caller_level + 1);
98 $metadata{method} = $caller_info[3];
99 $metadata{method} =~ s/^${package}::// if defined $metadata{method};
101 $self->_deliver_message($level, $generator, [ @args ], \%metadata);
105 my ($self, $destination, $is_weak) = @_;
108 if (ref($destination) ne 'CODE') {
109 $wrapped = sub { $destination };
111 $wrapped = $destination;
114 push(@{$self->_connections}, $wrapped);
115 weaken($self->_connections->[-1]) if $is_weak;
118 sub _clean_connections {
120 @{$self->{_connections}} = grep { defined } @{$self->{_connections}};