change from $ENV{OBJECT_REMOTE_PERL_PATH} to $ENV{OBJECT_REMOTE_PERL_BIN}

[scpubgit/Object-Remote.git] / lib / Object / Remote / Logging.pm

diff --git a/lib/Object/Remote/Logging.pm b/lib/Object/Remote/Logging.pm
index 25831ac..d99ca44 100644 (file)
--- a/lib/Object/Remote/Logging.pm
+++ b/lib/Object/Remote/Logging.pm
@@ -1,15 +1,117 @@
 package Object::Remote::Logging;
 
-use strictures 1;
+use Moo;
+use Scalar::Util qw(blessed);
+use Object::Remote::Logging::Logger;
+use Exporter::Declare;
+use Carp qw(carp croak);
 
-use Log::Contextual qw( :log );
-use Object::Remote::LogRouter;
+extends 'Log::Contextual';
 
-use base qw(Log::Contextual); 
+exports(qw( ____ router arg_levels ));
+#exception log - log a message then die with that message
+export_tag elog => ('____');
+#fatal log - log a message then call exit(1)
+export_tag flog => ('____');
 
-sub arg_router { return $_[1] if defined $_[1]; our $Router_Instance ||= Object::Remote::LogRouter->new }
+sub router {
+  our $Router_Instance ||= do {
+    require Object::Remote::Logging::Router;
+    Object::Remote::Logging::Router->new;
+  }
+}
 
-sub init_node { my $n = `hostname`; chomp($n); $_[0]->add_child_router("[node $n]", __PACKAGE__->arg_router) }
+#log level descriptions
+#info - standard log level - normal program output for the end user
+#warn - output for program that is executing quietly
+#error - output for program that is running more quietly
+#fatal - it is not possible to continue execution; this level is as quiet as is possible
+#verbose - output for program executing verbosely (-v)
+#debug - output for program running more verbosely (-v -v)
+#trace - output for program running extremely verbosely (-v -v -v)
+sub arg_levels {
+  #the order of the log levels is significant with the
+  #most verbose level being first in the list and the
+  #most quiet as the last item
+  return [qw( trace debug verbose info warn error fatal )];
+}
+
+sub before_import {
+   my ($class, $importer, $spec) = @_;
+   my $router = $class->router;
+
+   $class->SUPER::before_import($importer, $spec);
+
+   my @levels = @{$class->arg_levels($spec->config->{levels})};
+   for my $level (@levels) {
+      if ($spec->config->{elog}) {
+         $spec->add_export("&Elog_$level", sub (&) {
+            my ($code, @args) = @_;
+            $router->handle_log_request({
+               controller => $class,
+               package => scalar(caller),
+               caller_level => 1,
+               level => $level,
+            }, $code);
+            #TODO this should get fed into a logger so it can be formatted
+            croak $code->();
+         });
+      }
+      if ($spec->config->{flog}) {
+         #TODO that prototype isn't right
+         $spec->add_export("&Flog_$level", sub (&@) {
+            my ($code, $exit_value) = @_;
+            $exit_value = 1 unless defined $exit_value;
+            $router->handle_log_request({
+               controller => $class,
+               package => scalar(caller),
+               caller_level => 1,
+               level => $level,
+            }, $code);
+            #TODO this should get fed into a logger so it can be formatted
+            carp $code->();
+            exit($exit_value);
+         });
+      }
+   }
+}
+
+#this is invoked on all nodes
+sub init_logging {
+  my $level = $ENV{OBJECT_REMOTE_LOG_LEVEL};
+  my $format = $ENV{OBJECT_REMOTE_LOG_FORMAT};
+  #TODO allow the selections value to be * so it selects everything
+  my $selections = $ENV{OBJECT_REMOTE_LOG_SELECTIONS};
+  my %controller_should_log;
+  
+  return unless defined $level;
+  $format = "[%l %r] %s" unless defined $format;
+  $selections = __PACKAGE__ unless defined $selections;
+  %controller_should_log = map { $_ => 1 } split(' ', $selections);
+  
+  my $logger = Object::Remote::Logging::Logger->new(
+    min_level => lc($level), format => $format,
+    level_names => Object::Remote::Logging::arg_levels(),
+  );
+
+  router()->connect(sub { 
+    my $controller = $_[1]->{controller};
+    return unless  $controller_should_log{'*'} || $controller_should_log{$controller};
+    #skip things from remote hosts because they log to STDERR
+    #when OBJECT_REMOTE_LOG_LEVEL is in effect
+    return if $_[1]->{remote}->{connection_id};
+    $logger
+  });
+}
+
+#this is invoked by the controlling node
+#on the remote nodes
+sub init_logging_forwarding {
+  my ($self, %controller_info) = @_;
+  
+  router()->_remote_metadata({ connection_id => $controller_info{connection_id} });
+  router()->_forward_destination($controller_info{router}) if $ENV{OBJECT_REMOTE_LOG_FORWARDING};
+}
 
 1;