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1 | package Web::Simple::Application; |
2 | |
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3 | use Moo; |
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4 | |
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5 | has 'config' => ( |
6 | is => 'ro', |
7 | default => sub { |
8 | my ($self) = @_; |
9 | +{ $self->default_config } |
10 | }, |
11 | trigger => sub { |
12 | my ($self, $value) = @_; |
13 | my %default = $self->default_config; |
14 | my @not = grep !exists $value->{$_}, keys %default; |
15 | @{$value}{@not} = @default{@not}; |
16 | } |
17 | ); |
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18 | |
445b3ea0 |
19 | sub default_config { () } |
39119082 |
20 | |
445b3ea0 |
21 | has '_dispatcher' => (is => 'lazy'); |
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22 | |
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23 | sub _build__dispatcher { |
24 | my $self = shift; |
25 | require Web::Dispatch; |
26 | require Web::Simple::DispatchNode; |
27 | my $final = $self->_build_final_dispatcher; |
28 | Web::Dispatch->new( |
29 | app => sub { $self->dispatch_request(@_), $final }, |
30 | node_class => 'Web::Simple::DispatchNode', |
31 | node_args => { app_object => $self } |
32 | ); |
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33 | } |
34 | |
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35 | sub _build_final_dispatcher { |
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36 | [ 404, [ 'Content-type', 'text/plain' ], [ 'Not found' ] ] |
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37 | } |
38 | |
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39 | sub run_if_script { |
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40 | # ->to_psgi_app is true for require() but also works for plackup |
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41 | return $_[0]->to_psgi_app if caller(1); |
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42 | my $self = ref($_[0]) ? $_[0] : $_[0]->new; |
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43 | $self->run(@_); |
44 | } |
45 | |
913a9cf9 |
46 | sub _run_cgi { |
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47 | my $self = shift; |
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48 | require Plack::Server::CGI; |
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49 | Plack::Server::CGI->run($self->to_psgi_app); |
d3a61609 |
50 | } |
51 | |
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52 | sub _run_fcgi { |
53 | my $self = shift; |
54 | require Plack::Server::FCGI; |
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55 | Plack::Server::FCGI->run($self->to_psgi_app); |
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56 | } |
57 | |
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58 | sub to_psgi_app { |
bc57805c |
59 | my $self = ref($_[0]) ? $_[0] : $_[0]->new; |
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60 | $self->_dispatcher->to_app; |
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61 | } |
62 | |
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63 | sub run { |
64 | my $self = shift; |
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65 | if ($ENV{PHP_FCGI_CHILDREN} || $ENV{FCGI_ROLE} || $ENV{FCGI_SOCKET_PATH}) { |
66 | return $self->_run_fcgi; |
67 | } elsif ($ENV{GATEWAY_INTERFACE}) { |
2514ad17 |
68 | return $self->_run_cgi; |
913a9cf9 |
69 | } |
4ba6d891 |
70 | unless (@ARGV && $ARGV[0] =~ m{^[A-Z/]}) { |
db2899c3 |
71 | return $self->_run_cli(@ARGV); |
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72 | } |
73 | |
4ba6d891 |
74 | my @args = @ARGV; |
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75 | |
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76 | unshift(@args, 'GET') if $args[0] =~ m{^/}; |
77 | |
78 | $self->_run_test_request(@args); |
79 | } |
80 | |
81 | sub _run_test_request { |
82 | my ($self, $method, $path, @rest) = @_; |
83 | |
84 | require HTTP::Request; |
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85 | require Plack::Test; |
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86 | |
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87 | my $request = HTTP::Request->new($method => $path); |
88 | if ($method eq 'POST' or $method eq 'PUT' and @rest) { |
89 | my $content = do { |
90 | require URI; |
91 | my $url = URI->new('http:'); |
92 | $url->query_form(@rest); |
93 | $url->query; |
94 | }; |
95 | $request->header('Content-Type' => 'application/x-www-form-urlencoded'); |
96 | $request->header('Content-Length' => length($content)); |
97 | $request->content($content); |
98 | } |
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99 | my $response; |
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100 | Plack::Test::test_psgi( |
101 | $self->to_psgi_app, sub { $response = shift->($request) } |
102 | ); |
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103 | print $response->as_string; |
913a9cf9 |
104 | } |
105 | |
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106 | sub _run_cli { |
107 | my $self = shift; |
108 | die $self->_cli_usage; |
109 | } |
110 | |
111 | sub _cli_usage { |
112 | "To run this script in CGI test mode, pass a URL path beginning with /:\n". |
113 | "\n". |
114 | " $0 /some/path\n". |
115 | " $0 /\n" |
116 | } |
117 | |
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118 | 1; |
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119 | |
120 | =head1 NAME |
121 | |
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122 | Web::Simple::Application - A base class for your Web-Simple application |
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123 | |
124 | =head1 DESCRIPTION |
125 | |
126 | This is a base class for your L<Web::Simple> application. You probably don't |
127 | need to construct this class yourself, since L<Web::Simple> does the 'heavy |
128 | lifting' for you in that regards. |
129 | |
130 | =head1 METHODS |
131 | |
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132 | This class exposes the following public methods. |
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133 | |
134 | =head2 default_config |
135 | |
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136 | Merges with the C<config> initializer to provide configuration information for |
137 | your application. For example: |
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138 | |
139 | sub default_config { |
140 | ( |
141 | title => 'Bloggery', |
142 | posts_dir => $FindBin::Bin.'/posts', |
143 | ); |
144 | } |
145 | |
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146 | Now, the C<config> attribute of C<$self> will be set to a HashRef |
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147 | containing keys 'title' and 'posts_dir'. |
148 | |
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149 | The keys from default_config are merged into any config supplied, so |
150 | if you construct your application like: |
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151 | |
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152 | MyWebSimpleApp::Web->new( |
153 | config => { title => 'Spoon', environment => 'dev' } |
154 | ) |
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155 | |
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156 | then C<config> will contain: |
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157 | |
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158 | { |
159 | title => 'Spoon', |
160 | posts_dir => '/path/to/myapp/posts', |
161 | environment => 'dev' |
162 | } |
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163 | |
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164 | =head2 run_if_script |
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165 | |
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166 | The run_if_script method is designed to be used at the end of the script |
167 | or .pm file where your application class is defined - for example: |
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168 | |
169 | ## my_web_simple_app.pl |
170 | #!/usr/bin/env perl |
171 | use Web::Simple 'HelloWorld'; |
172 | |
173 | { |
174 | package HelloWorld; |
175 | |
176 | sub dispatch_request { |
177 | sub (GET) { |
178 | [ 200, [ 'Content-type', 'text/plain' ], [ 'Hello world!' ] ] |
179 | }, |
180 | sub () { |
181 | [ 405, [ 'Content-type', 'text/plain' ], [ 'Method not allowed' ] ] |
182 | } |
183 | } |
184 | } |
185 | |
186 | HelloWorld->run_if_script; |
187 | |
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188 | This returns a true value, so your file is now valid as a module - so |
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189 | |
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190 | require 'my_web_simple_app.pl'; |
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191 | |
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192 | my $hw = HelloWorld->new; |
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193 | |
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194 | will work fine (and you can rename it to lib/HelloWorld.pm later to make it |
195 | a real use-able module). |
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196 | |
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197 | However, it detects if it's being run as a script (via testing $0) and if |
198 | so attempts to do the right thing. |
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199 | |
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200 | If run under a CGI environment, your application will execute as a CGI. |
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201 | |
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202 | If run under a FastCGI environment, your application will execute as a |
203 | FastCGI process (this works both for dynamic shared-hosting-style FastCGI |
204 | and for apache FastCgiServer style setups). |
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205 | |
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206 | If run from the commandline with a URL path, it runs a GET request against |
207 | that path - |
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208 | |
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209 | $ perl -Ilib examples/hello-world/hello-world.cgi / |
210 | 200 OK |
211 | Content-Type: text/plain |
212 | |
213 | Hello world! |
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214 | |
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215 | Additionally, you can treat the file as though it were a standard PSGI |
216 | application file (*.psgi). For example you can start up up with C<plackup> |
217 | |
218 | plackup my_web_simple_app.pl |
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219 | |
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220 | or C<starman> |
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221 | |
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222 | starman my_web_simple_app.pl |
223 | |
224 | =head2 to_psgi_app |
225 | |
226 | This method is called by L</run_if_script> to create the L<PSGI> app coderef |
227 | for use via L<Plack> and L<plackup>. If you want to globally add middleware, |
228 | you can override this method: |
6a4808bf |
229 | |
230 | use Web::Simple 'HelloWorld'; |
231 | use Plack::Builder; |
232 | |
233 | { |
234 | package HelloWorld; |
235 | |
236 | |
237 | around 'to_psgi_app', sub { |
238 | my ($orig, $self) = (shift, shift); |
239 | my $app = $self->$orig(@_); |
240 | builder { |
241 | enable ...; ## whatever middleware you want |
242 | $app; |
243 | }; |
244 | }; |
245 | } |
246 | |
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247 | This method can also be used to mount a Web::Simple application within |
248 | a separate C<*.psgi> file - |
249 | |
250 | use strictures 1; |
251 | use Plack::Builder; |
252 | use WSApp; |
253 | use AnotherWSApp; |
254 | |
255 | builder { |
256 | mount '/' => WSApp->to_psgi_app; |
257 | mount '/another' => AnotherWSApp->to_psgi_app; |
258 | }; |
259 | |
260 | This method can be called as a class method, in which case it implicitly |
261 | calls ->new, or as an object method ... in which case it doesn't. |
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262 | |
263 | =head2 run |
264 | |
265 | Used for running your application under stand-alone CGI and FCGI modes. Also |
266 | useful for testing: |
267 | |
268 | my $app = MyWebSimpleApp::Web->new; |
269 | my $c = HTTP::Request::AsCGI->new(@args)->setup; |
270 | $app->run; |
271 | |
272 | =head1 AUTHOR |
273 | |
274 | Matt S. Trout <mst@shadowcat.co.uk> |
275 | |
276 | =head1 CONTRIBUTORS |
277 | |
278 | None required yet. Maybe this module is perfect (hahahahaha ...). |
279 | |
280 | =head1 COPYRIGHT |
281 | |
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282 | Copyright (c) 2010 the Web::Simple L</AUTHOR> and L</CONTRIBUTORS> |
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283 | as listed above. |
284 | |
285 | =head1 LICENSE |
286 | |
287 | This library is free software and may be distributed under the same terms |
288 | as perl itself. |
289 | |
290 | =cut |