/usr/share/perl5/Plack/Middleware/BufferedStreaming.pm is in libplack-perl 1.0033-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | package Plack::Middleware::BufferedStreaming;
use strict;
no warnings;
use Carp;
use Plack::Util;
use Plack::Util::Accessor qw(force);
use Scalar::Util qw(weaken);
use parent qw(Plack::Middleware);
sub call {
my ( $self, $env ) = @_;
my $caller_supports_streaming = $env->{'psgi.streaming'};
$env->{'psgi.streaming'} = Plack::Util::TRUE;
my $res = $self->app->($env);
return $res if $caller_supports_streaming && !$self->force;
if ( ref($res) eq 'CODE' ) {
my $ret;
$res->(sub {
my $write = shift;
if ( @$write == 2 ) {
my @body;
$ret = [ @$write, \@body ];
return Plack::Util::inline_object(
write => sub { push @body, $_[0] },
close => sub { },
);
} else {
$ret = $write;
return;
}
});
return $ret;
} else {
return $res;
}
}
1;
__END__
=head1 NAME
Plack::Middleware::BufferedStreaming - Enable buffering for non-streaming aware servers
=head1 SYNOPSIS
enable "BufferedStreaming";
=head1 DESCRIPTION
Plack::Middleware::BufferedStreaming is a PSGI middleware component
that wraps the application that uses C<psgi.streaming> interface to
run on the servers that do not support the interface, by buffering the
writer output to a temporary buffer.
This middleware doesn't do anything and bypass the application if the
server supports C<psgi.streaming> interface, unless you set C<force>
option (see below).
=head1 OPTIONS
=over 4
=item force
Force enable this middleware only if the container supports C<psgi.streaming>.
=back
=head1 AUTHOR
Yuval Kogman
Tatsuhiko Miyagawa
=cut
|