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![# WSGI
def hello(environ, start_response):
start_response(“200 OK”, [
(‘Content-Type’, ‘text/plain’)
])
return [“Hello World”]](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-49-320.jpg)
![# Rack
class Hello
def call(env)
return [
200,
{ “Content-Type” => ”text/plain” },
[“Hello World”]
]
end
end](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-50-320.jpg)
![# PSGI
my $app = sub {
my $env = shift;
return [
200,
[ ‘Content-Type’, ‘text/plain’ ],
[ ‘Hello World’ ],
];
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-51-320.jpg)
![my $app = sub {
my $env = shift;
return [ $status, $header, $body ];
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-53-320.jpg)
![my $app = sub {
my $env = shift;
return [ $status, $header, $body ];
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-55-320.jpg)
![my $app = sub {
my $env = shift;
return [ $status, $header, $body ];
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-57-320.jpg)
![my $app = sub {
my $env = shift;
return sub {
my $respond = shift;
# You could do some event loop
# to delay response (e.g. Comet)
$respond->([ $status, $header, $body ]);
};
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-61-320.jpg)
![my $app = sub {
my $env = shift;
return sub {
my $respond = shift;
my $w = $respond->([ $status, $header ]);
$w->write($body);
$w->write($body);
...
$w->close;
};
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-62-320.jpg)
![# Web::Simple
use Web::Simple ‘MyApp’;
package MyApp;
dispatch {
sub(GET) {
[ 200, [...], [ ‘Hello’ ] ];
}
};
my $app = MyApp->as_psgi;
# $app is a PSGI app!](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-73-320.jpg)
![my $app = sub {
my $env = shift;
return [ $status, $header, $body ];
};
my $mw = sub {
my $env = shift;
# do something with $env
my $res = $app->($env);
# do something with $res;
return $res;
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-82-320.jpg)
![my $app = sub {
return [ $status, $header, $body ];
};
use Plack::Builder;
builder {
enable “Static”, root => “/htdocs”,
path => qr!^/static/!;
enable “Deflater”; # gzip/deflate
$app;
}](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-85-320.jpg)
![use Plack::Test;
use HTTP::Request::Common;
my $app = sub {
my $env = shift;
return [ $status, $header, $body ];
};
test_psgi app => $app, client => sub {
my $cb = shift;
my $req = GET “http://localhost/foo”;
my $res = $cb->($req);
# test $res;
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-94-320.jpg)
![use Plack::Test;
use HTTP::Request::Common;
$Plack::Test::Impl = “Server”;
my $app = sub {
my $env = shift;
return [ $status, $header, $body ];
};
test_psgi app => $app, client => sub {
my $cb = shift;
my $req = GET “http://localhost/foo”;
my $res = $cb->($req);
# test $res;
};](https://image.slidesharecdn.com/plack-osdctw-100424221517-phpapp02/85/PSGI-Plack-OSDC-TW-95-320.jpg)
Uploaded byTatsuhiko Miyagawa
PSGI/Plack OSDC.TW
Plack is a Perl web server gateway interface (PSGI) toolkit that provides a standard interface between web applications written in Perl and web servers. It includes reusable middleware, a reference PSGI server, handlers for connecting to different web servers like CGI and FastCGI, and tools for running and testing PSGI applications. Many popular Perl web frameworks have adapted to work with PSGI/Plack.
More Related Content
PSGI/Plack OSDC.TW
- 1. Plack Superglue for PerlWeb Frameworks Tatsuhiko Miyagawa OSDC. 2010
- 2. • • Six Apart • 177 CPAN modules (id:MIYAGAWA) • @miyagawa • http://bulknews.typepad.com/
- 4. Web Frameworks (in Perl)
- 6. Sharing, Stealing andImporting
- 8. Web Frameworks in Perl
- 9. Many ways towrite Perl web applications
- 10. Maypole Mason MojoSledge Catalyst Spoon PageKit AxKit Egg Gantry Continuity Solstice Mojolicious Tripletail Konstrukt Reaction Jifty Cyclone3 WebGUI OpenInteract Squatting Dancer CGI::Application Nanoa Ark Angelos Noe Schenker Tatsumaki Amon Apache2::WebApp Web::Simple Apache2::REST SweetPea Hydrant Titanium
- 11. Some ways torun Perl web applications
- 12.
- 13.
- 14. Runs “fine” on: CGI, FastCGI, mod_perl (1 & 2) Standalone (with HTTP::Server::Simple)
- 15. CGI.pm = LCD Perl core module
- 16. 8803 lines ofcode First ver. in Nov.1995
- 17.
- 18.
- 19.
- 20. Catalyst The most popularperl web framework as of today
- 21. Catalyst::Engine::* Server abstractions. Apache, FastCGI, Standalone and Prefork No CGI.pm
- 22. CGI.pm Jifty,CGI::Application, Spoon mod_perl centric Mason, Sledge, PageKit, WebGUI Adapters Catalyst, Maypole, Squatting
- 25.
- 26.
- 27. HTTP::Engine Yappo, tokuhirom andnothingmuch etc.
- 28. :-) Ported Catalyst enginecode and made it sharable
- 29. :-( Monolithic code base No separation of interface & impl.
- 30.
- 32. Steal great idea fromPython/Ruby
- 33. Import stuff proven popular from Python/Ruby
- 35.
- 36. Popular and successful in Python and Ruby
- 37. WSGI (Python) Rack(Ruby)
- 38.
- 40. WSGI • Django • mod_wsgi • Bottle • Paste • CherryPy • gunicorn • Tornado • uWSGI • Pylons • wsgiref • Flask • Google AppEngine
- 41. Django Bottle Flask Tornado WSGI middleware WSGI wsgi handlers Apache lighttpd nginx mod_wsgi GAE
- 42.
- 44. Rack • Rails • Unicorn • Merb • Thin • Sinatra • Mongrel • Camping • Rainbows! • Ramaze • Phusion Passenger • etc. • Heroku
- 45. Rails Merb Sinatra Ramaze Rack middleware Rack Rack handlers Apache lighttpd Thin Unicorn Mongrel
- 46. PSGI Perl Web ServerGateway Interface
- 47.
- 49. # WSGI def hello(environ,start_response): start_response(“200 OK”, [ (‘Content-Type’, ‘text/plain’) ]) return [“Hello World”]
- 50. # Rack class Hello def call(env) return [ 200, { “Content-Type” => ”text/plain” }, [“Hello World”] ] end end
- 51. # PSGI my $app= sub { my $env = shift; return [ 200, [ ‘Content-Type’, ‘text/plain’ ], [ ‘Hello World’ ], ]; };
- 52. PSGI application code reference $app = sub {...};
- 53. my $app =sub { my $env = shift; return [ $status, $header, $body ]; };
- 54. environment hash $env: CGI-likeenv variables + psgi.input, psgi.errors etc.
- 55. my $app =sub { my $env = shift; return [ $status, $header, $body ]; };
- 56. Response array refwith three elements status code, headers (array ref) and body (IO-like or array ref)
- 57. my $app =sub { my $env = shift; return [ $status, $header, $body ]; };
- 58. $body IO::Handle-like getline()and close()
- 59. IO::Handle::Util Easily turns perlcode ref into a IO::Handle
- 60.
- 61. my $app =sub { my $env = shift; return sub { my $respond = shift; # You could do some event loop # to delay response (e.g. Comet) $respond->([ $status, $header, $body ]); }; };
- 62. my $app =sub { my $env = shift; return sub { my $respond = shift; my $w = $respond->([ $status, $header ]); $w->write($body); $w->write($body); ... $w->close; }; };
- 63. Streaming Interface Originallydesigned for non-blocking servers Now available for most servers incl. CGI, Apache
- 64. Catalyst CGI::App Jifty Tatsumaki Plack::Middleware PSGI Plack::Handler::* (CGI, FCGI, Apache) Apache lighttpd HTTP::Server::PSGI mod_psgi Perlbal
- 65.
- 66. Maypole Mason MojoSledge Catalyst Spoon PageKit AxKit Egg Gantry Continuity Solstice Mojolicious Tripletail Konstrukt Reaction Jifty Cyclone3 WebGUI OpenInteract Squatting Dancer CGI::Application Nanoa Ark Angelos Noe Schenker Tatsumaki Amon Apache2::WebApp Web::Simple Apache2::REST SweetPea Hydrant Titanium
- 67. Maypole Mason MojoSledge Catalyst Spoon PageKit AxKit Egg Gantry Continuity Solstice Mojolicious Tripletail Konstrukt Reaction Jifty Cyclone3 WebGUI OpenInteract Squatting Dancer CGI::Application Nanoa Ark Angelos Noe Schenker Tatsumaki Amon Apache2::WebApp Web::Simple Apache2::REST SweetPea Hydrant Titanium
- 68.
- 69. # Catalyst use MyApp; MyApp->setup_engine(‘PSGI’); my$app = sub { MyApp->run(@_) }; # $app is a PSGI app!
- 70. # Jifty use MyPonyApp; my$app = MyPonyApp->psgi_app; # $app is a PSGI app!
- 71. # Dancer use Dancer; get‘/’ => sub { “Hello World”; }; use Dancer::Config ‘setting’; setting apphandler => ‘PSGI’; my $app = sub { my $r = Dancer::Request->new(shift); Dancer->dance($r); }; # $app is a PSGI app!
- 72. # Mojolicious::Lite use Mojolicious::Lite; get‘/:name’ => sub { my $self = shift; $self->render_text(‘Hello!’); }; shagadelic; # returns PSGI app
- 73. # Web::Simple use Web::Simple‘MyApp’; package MyApp; dispatch { sub(GET) { [ 200, [...], [ ‘Hello’ ] ]; } }; my $app = MyApp->as_psgi; # $app is a PSGI app!
- 74.
- 75. HTTP::Server::PSGI Reference PSGIweb server bundled in Plack
- 76. Plack::Handler Connects PSGI appsto Web servers CGI, FastCGI, Apache, SCGI
- 77. Plackup Runs PSGI appinstantly from CLI (inspired by rackup)
- 78.
- 79.
- 80.
- 82. my $app =sub { my $env = shift; return [ $status, $header, $body ]; }; my $mw = sub { my $env = shift; # do something with $env my $res = $app->($env); # do something with $res; return $res; };
- 83. Middleware Debug, Session,Logger, Runtime, Static, AccessLog, ConditionalGET, ErrorDocument, StackTrace, Auth::Basic, Auth::Digest, ReverseProxy, Refresh etc. (Imported from Rack and Paste)
- 84. Plack::Middleware reusableand extensible Middleware framework Plack::Builder DSL in .psgi
- 85. my $app =sub { return [ $status, $header, $body ]; }; use Plack::Builder; builder { enable “Static”, root => “/htdocs”, path => qr!^/static/!; enable “Deflater”; # gzip/deflate $app; }
- 86. plackup compatible plackup -e‘enable “Foo”;’ app.psgi
- 87.
- 88. Plack::App::URLMap Multiplex multiple apps Integrated with Builder DSL (Imported from Rack)
- 89. use CatApp; use CGIApp; my$c1 = sub { CatApp->run }; my $c2 = sub { CGIApp->run_psgi }; use Plack::Builder; builder { mount “/cat” => $c1; mount “/cgi-app” => builder { enable “StackTrace”; $c2; }; }
- 90.
- 91. CGI::Emulate::PSGI CGI::Compile Easiest migration from CGI scripts (like Registry)
- 92. Plack::Request like libapreq (Apache::Request) wrapper APIs for middleware developers
- 93. Plack::Test Unified interfaceto write tests with Mock HTTP and Live HTTP
- 94. use Plack::Test; use HTTP::Request::Common; my$app = sub { my $env = shift; return [ $status, $header, $body ]; }; test_psgi app => $app, client => sub { my $cb = shift; my $req = GET “http://localhost/foo”; my $res = $cb->($req); # test $res; };
- 95. use Plack::Test; use HTTP::Request::Common; $Plack::Test::Impl= “Server”; my $app = sub { my $env = shift; return [ $status, $header, $body ]; }; test_psgi app => $app, client => sub { my $cb = shift; my $req = GET “http://localhost/foo”; my $res = $cb->($req); # test $res; };
- 96.
- 97. Starman UNIX Preforking HTTPservers (like Unicorn.rb) HTTP/1.1 chunk + keep-alives / Very Fast
- 98. Twiggy Non-blocking web server(like Thin.rb) based on AnyEvent framework
- 99. Corona Coroutine for eachconnection based on Coro.pm
- 100. HTTP::Server::Simple::PSGI Zero-deps otherthan HTTP::Server::Simple Best for embedding PSGI applications
- 101. nginx embedded perl http://github.com/yappo/nginx-psgi-patchs
- 102.
- 103.
- 104.
- 105.
- 106. Catalyst CGI::App Jifty Tatsumaki Plack::Middleware PSGI Plack::Handler::* (CGI, FCGI, Apache) Apache lighttpd HTTP::Server::PSGI mod_psgi Perlbal Starman Twiggy uWSGI Corona evpsgi
- 107.
- 108. > cpanm Plack >cpanm Task::Plack
- 109.
- 110.
- 112. Runs on ’s Sandbox ( )
- 113. You can eventry: system(“rm -fr /”); while (1) { }
- 114. • PSGI isan interface, Plack is the code. • We have many (pretty fast) PSGI servers. • We have adapters and tools for most web frameworks. • Use it!
- 115. • Sharing isimportant. • Stealing is a good start. • Importing something successful is great.
- 116. http://github.com/miyagawa/Plack http://plackperl.org/ http://blog.plackperl.org/ irc://irc.perl.org/#plack
- 117.
- 118.