X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FCatalyst.pm;h=bf5a1ee572aa030497a5276c6d7ead1bdec5f450;hb=20a09634de458885c2551635251caec4a349956d;hp=17605d40bd5eb83df992d23a49cd62f168f0d335;hpb=409d48fb495802db8eb6e02a927dd2915d8643b4;p=catagits%2FCatalyst-Runtime.git

diff --git a/lib/Catalyst.pm b/lib/Catalyst.pm
index 17605d4..bf5a1ee 100644
--- a/lib/Catalyst.pm
+++ b/lib/Catalyst.pm
@@ -40,6 +40,8 @@ use Plack::Middleware::ReverseProxy;
 use Plack::Middleware::IIS6ScriptNameFix;
 use Plack::Middleware::IIS7KeepAliveFix;
 use Plack::Middleware::LighttpdScriptNameFix;
+use Plack::Util;
+use Class::Load;
 
 BEGIN { require 5.008003; }
 
@@ -113,7 +115,7 @@ __PACKAGE__->stats_class('Catalyst::Stats');
 
 # Remember to update this in Catalyst::Runtime as well!
 
-our $VERSION = '5.90030';
+our $VERSION = '5.90042';
 
 sub import {
     my ( $class, @arguments ) = @_;
@@ -1828,7 +1830,7 @@ sub finalize {
     $c->log_response;
 
     if ($c->use_stats) {
-        my $elapsed = sprintf '%f', $c->stats->elapsed;
+        my $elapsed = $c->stats->elapsed;
         my $av = $elapsed == 0 ? '??' : sprintf '%.3f', 1 / $elapsed;
         $c->log->info(
             "Request took ${elapsed}s ($av/s)\n" . $c->stats->report . "\n" );
@@ -2726,6 +2728,11 @@ sub setup_engine {
     return;
 }
 
+## This exists just to supply a prebuild psgi app for mod_perl and for the 
+## build in server support (back compat support for pre psgi port behavior).
+## This is so that we don't build a new psgi app for each request when using
+## the mod_perl handler or the built in servers (http and fcgi, etc).
+
 sub _finalized_psgi_app {
     my ($app) = @_;
 
@@ -2737,6 +2744,12 @@ sub _finalized_psgi_app {
     return $app->_psgi_app;
 }
 
+## Look for a psgi file like 'myapp_web.psgi' (if the app is MyApp::Web) in the
+## home directory and load that and return it (just assume it is doing the 
+## right thing :) ).  If that does not exist, call $app->psgi_app, wrap that
+## in default_middleware and return it ( this is for backward compatibility
+## with pre psgi port behavior ).
+
 sub _setup_psgi_app {
     my ($app) = @_;
 
@@ -3001,7 +3014,7 @@ the plugin name does not begin with C<Catalyst::Plugin::>.
                 () }
                 : $_
         } @$plugins ];
-        unshift @$plugins, $class->_default_plugins;
+        push @$plugins, $class->_default_plugins;
         $plugins = Data::OptList::mkopt($plugins || []);
 
         my @plugins = map {
@@ -3033,6 +3046,135 @@ the plugin name does not begin with C<Catalyst::Plugin::>.
     }
 }
 
+has '_registered_middlewares' => (
+    traits => ['Array'],
+    is => 'bare',
+    isa => 'ArrayRef[Object|CodeRef]',
+    default => sub { [] },
+    handles => {
+        registered_middlewares => 'elements',
+        _register_middleware => 'push',
+    });
+    
+
+=head2 setup_middleware
+
+Read configuration information stored in configuration key 'psgi_middleware'
+and invoke L</register_middleware> for each middleware prototype found.  See
+under L</CONFIGURATION> information regarding L</psgi_middleware> and how to
+use it to enable L<Plack::Middleware>
+
+This method is automatically called during 'setup' of your application, so
+you really don't need to invoke it.
+
+When we read middleware definitions from configuration, we reverse the list
+which sounds odd but is likely how you expect it to work if you have prior
+experience with L<Plack::Builder> or if you previously used the plugin
+L<Catalyst::Plugin::EnableMiddleware> (which is now considered deprecated)
+
+=head2 register_middleware (@args)
+
+Given @args that represent the definition of some L<Plack::Middleware> or 
+middleware with a compatible interface, register it with your L<Catalyst>
+application.
+
+This is called by L</setup_middleware>.  the behaior of invoking it yourself
+at runtime is currently undefined, and anything that works or doesn't work
+as a result of doing so is considered a side effect subject to change.
+
+=head2 _register_middleware (@args)
+
+Internal details of how registered middleware is stored by the application.
+
+=head2 _build_middleware_from_args (@args)
+
+Internal application that converts a single middleware definition (see
+L</psgi_middleware>) into an actual instance of middleware.
+
+=head2 registered_middlewares
+
+Read only accessor that returns an array of all the middleware in the order
+that they were added (which is the REVERSE of the order they will be applied).
+
+The values returned will be either instances of L<Plack::Middleware> or of a
+compatible interface, or a coderef, which is assumed to be inlined middleware
+
+=head2 apply_registered_middleware ($psgi)
+
+Given a $psgi reference, wrap all the L<registered_middlewares> around it and
+return the wrapped version.
+
+=cut
+
+sub setup_middleware {
+    my ($self) = @_;
+    my @middleware_definitions = reverse
+      @{$self->config->{'psgi_middleware'}||[]};
+
+    while(my $next = shift(@middleware_definitions)) {
+        if(ref $next) {
+            if(Scalar::Util::blessed $next && $next->can('wrap')) {
+                $self->register_middleware($next);
+            } elsif(ref $next eq 'CODE') {
+                $self->register_middleware($next);
+            } elsif(ref $next eq 'HASH') {
+                my $namespace = shift @middleware_definitions;
+                $self->register_middleware($namespace, %$next);
+            } else {
+                $self->register_middleware($next);
+            }
+        }
+    }
+}
+
+sub register_middleware {
+    my($self, @args) = @_;
+    my $middleware = $self->_build_middleware_from_args(@args);
+    $self->_register_middleware($middleware);
+    return $middleware;
+}
+
+sub _build_middleware_from_args {
+    my ($self, $proto, @args) = @_;
+
+    if(ref $proto) { ## Either an object or coderef
+      if(Scalar::Util::blessed $proto && $proto->can('wrap')) {  ## Its already an instance of middleware
+        return $proto;
+      } elsif(ref $proto eq 'CODE') { ## Its inlined coderef
+        return $proto;
+      }
+    } else { ## We assume its a string aiming to load Plack Middleware
+        my $class = ref($self) || $self;
+        if(
+          $proto =~s/^\+// ||
+          $proto =~/^Plack::Middleware/ ||
+          $proto =~/^$class/
+        ) {  ## the string is a full namespace
+            require "$proto";
+            return $proto->new(@args);
+        } else { ## the string is a partial namespace
+            if(Class::Load::try_load_class("Plack::Middleware::$proto")) { ## Act like Plack::Builder
+                return "Plack::Middleware::$proto"->new(@args);
+            } elsif(Class::Load::try_load_class("$class::$proto")) { ## Load Middleware from Project namespace
+                return "$class::$proto"->new(@args);
+            }
+        }
+    }
+
+    die "I don't know how to build $proto into valid Plack Middleware";
+}
+
+sub apply_registered_middleware {
+    my ($self, $psgi) = @_;
+    my $new_psgi = $psgi;
+    foreach my $middleware ($self->registered_middlewares) {
+        $new_psgi = Scalar::Util::blessed $middleware ?
+          $middleware->wrap($new_psgi) :
+            $middleware->($new_psgi);
+    }
+    return $new_psgi;
+}
+
 =head2 $c->stack
 
 Returns an arrayref of the internal execution stack (actions that are
@@ -3193,7 +3335,7 @@ is having paths rewritten into it (e.g. as a .cgi/fcgi in a public_html director
 at other URIs than that which the app is 'normally' based at with C<mod_rewrite>), the resolution of
 C<< $c->request->base >> will be incorrect.
 
-=back
+=back 
 
 =item *
 
@@ -3203,9 +3345,9 @@ C<using_frontend_proxy> - See L</PROXY SUPPORT>.
 
 C<encoding> - See L</ENCODING>
 
-=back
+=item *
 
-=item abort_chain_on_error_fix => 1
+C<abort_chain_on_error_fix>
 
 When there is an error in an action chain, the default behavior is to continue
 processing the remaining actions and then catch the error upon chain end.  This
@@ -3214,8 +3356,14 @@ you have this issue, setting this config value to true will promptly exit a
 chain when there is an error raised in any action (thus terminating the chain 
 early.)
 
+use like:
+
+    __PACKAGE__->config(abort_chain_on_error_fix => 1);
+
 In the future this might become the default behavior.
 
+=back
+
 =head1 INTERNAL ACTIONS
 
 Catalyst uses internal actions like C<_DISPATCH>, C<_BEGIN>, C<_AUTO>,