86 lines
2.4 KiB
Perl
86 lines
2.4 KiB
Perl
package WebGUI::Middleware::Session;
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use strict;
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use parent qw(Plack::Middleware);
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use WebGUI::Config;
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use WebGUI::Session;
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use Try::Tiny;
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use Plack::Middleware::StackTrace;
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use Plack::Middleware::Debug;
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use WebGUI::Middleware::HTTPExceptions;
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use Plack::Middleware::ErrorDocument;
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use Plack::Middleware::SimpleLogger;
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use Plack::Util::Accessor qw( config error_docs );
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=head1 NAME
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WebGUI::Middleware::Session - Opens and closes the per-request WebGUI::Session
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=head1 DESCRIPTION
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This is PSGI middleware for WebGUI that instantiates, opens and closes the
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L<WebGUI::Session> object. It does this as early and as late as possible, so
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that all intermediate middleware (and the WebGUI app itself) can grab
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the session out of the PSGI env hash:
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$env->{'webgui.session'};
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and not worry about closing it.
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=cut
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sub call {
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my ( $self, $env ) = @_;
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my $app = $self->app;
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my $config = $self->config or die 'Mandatory config parameter missing';
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# Logger fallback
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if (!$env->{'psgix.logger'}) {
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$app = Plack::Middleware::SimpleLogger->wrap( $app );
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}
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my $session = try {
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$env->{'webgui.session'} = WebGUI::Session->open( $config->getWebguiRoot, $config, $env );
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};
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if ( !$session ) {
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# We don't have access to a db connection to find out if the user is allowed to see
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# a verbose error message or not, so resort to a generic Internal Server Error
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# (using the error_docs mapping)
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return Plack::Middleware::ErrorDocument->wrap( sub { [ 500, [], [] ] }, %{ $self->error_docs } )->($env);
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}
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my $debug = $session->log->canShowDebug;
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if ($debug) {
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$app = Plack::Middleware::StackTrace->wrap($app);
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$app = Plack::Middleware::Debug->wrap( $app,
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panels => [qw(Environment Response Timer Memory Session DBITrace PerlConfig Response)] );
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}
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# Turn exceptions into HTTP errors
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$app = WebGUI::Middleware::HTTPExceptions->wrap($app);
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# HTTP error document mapping
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if ( !$debug && $self->error_docs ) {
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$app = Plack::Middleware::ErrorDocument->wrap( $app, %{ $self->error_docs } );
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}
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# Run the app
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my $res = $app->($env);
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# Use callback style response
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return $self->response_cb(
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$res,
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sub {
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my $res = shift;
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# Close the Session
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$env->{'webgui.session'}->close();
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delete $env->{'webgui.session'};
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}
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);
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}
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1;
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