Make the cache directory configurable

First step to be more package friendly

conf/settings.ini.dist

@@ -78,6 +78,11 @@ credentials = 'rest'
 ; For exmple, if you use vroom.domain.tld and pad.domain.tld, set domain.tld here
 ;base_domain = 'example.com'
 
+[directories]
+; Where to store cache data. Defaults to the cache subdirectory
+; User running VROOM daemon must have write access
+;cache = 'cache'
+
 [daemon]
 ; IP the hypnotoad daemon will listen on. You can use * to bind on every IP/Interface
 ;listen_ip = '127.0.0.1'

templates/default/documentation.html.ep

@@ -400,6 +400,16 @@ cp /opt/vroom/conf/settings.ini.dist /opt/vroom/conf/settings.ini</pre>
         </ul>
       </p>
 
+      <h3 id="settings_directories">
+        directories
+      </h3>
+      <p>
+        Controls where to find some specific directories
+        <ul>
+          <li><strong>cache</strong>: This is where VROOM will store its cache (including auto generated and compressed assets like JS and CSS bundles)</li>
+        </ul>
+      </p>
+
       <h3 id="settings_daemon">
         daemon
       </h3>

vroom.pl

@@ -21,6 +21,7 @@ use Config::Simple;
 use Email::Valid;
 use Protocol::SocketIO::Handshake;
 use Protocol::SocketIO::Message;
+use File::Path qw(make_path);
 use Data::Dumper;
 
 app->log->level('info');
@@ -63,6 +64,16 @@ $config->{'daemon.backend'}                    ||= 'hypnotoad';
 $config->{'daemon.log_level'}                  ||= 'warn';
 $config->{'daemon.pid_file'}                   ||= '/tmp/vroom.pid';
 
+# Try to create the cache dir if they doesn't exist
+foreach my $dir (qw/assets/){
+  if (!-d $config->{'directories.cache'} . '/' . $dir){
+    make_path($config->{'directories.cache'} . '/' . $dir, { mode => 0770 });
+  }
+  elsif (!-w $config->{'directories.cache'} . '/' . $dir){
+    die $config->{'directories.cache'} . '/' . "$dir is not writable";
+  }
+}
+
 # Create etherpad api client if enabled
 our $ec = undef;
 if ($config->{'etherpad.uri'} =~ m/https?:\/\/.*/ && $config->{'etherpad.api_key'} ne ''){
@@ -113,7 +124,8 @@ plugin mail => {
 
 # Static resources compressor
 plugin StaticCompressor => {
-  url_path_prefix => 'cache'
+  url_path_prefix => 'assets',
+  file_cache_path => $config->{'directories.cache'} . '/assets/'
 };
 
 ##########################
@@ -2159,6 +2171,7 @@ get '/:room' => sub {
 
 # use the templates defined in the config
 push @{app->renderer->paths}, 'templates/'.$config->{'interface.template'};
+
 # Set the secret used to sign cookies
 app->secrets([$config->{'cookie.secret'}]);
 app->sessions->secure(1);