Revert "Bug 1352264 - Preload all templates"

This reverts commit c82963a57cf97932870e11de8cf2a6205132b954.

3 files changed, 6 insertions, 130 deletions

diff --git a/Bugzilla/Template.pm b/Bugzilla/Template.pm
index 5a14a8e85..b08cffbde 100644
--- a/Bugzilla/Template.pm
+++ b/Bugzilla/Template.pm
@@ -12,7 +12,6 @@ use 5.10.1;
 use strict;
 use warnings;
 
-use Bugzilla::Template::PreloadProvider;
 use Bugzilla::Bug;
 use Bugzilla::Constants;
 use Bugzilla::Hook;
@@ -48,8 +47,6 @@ use constant FORMAT_3_SIZE => [19,28,28];
 use constant FORMAT_DOUBLE => '%19s %-55s';
 use constant FORMAT_2_SIZE => [19,55];
 
-my %SHARED_PROVIDERS;
-
 # Pseudo-constant.
 sub SAFE_URL_REGEXP {
     my $safe_protocols = join('|', SAFE_PROTOCOLS);
@@ -976,12 +973,10 @@ sub create {
 
         PLUGIN_BASE => 'Bugzilla::Template::Plugin',
 
+        CONSTANTS => _load_constants(),
+
         # Default variables for all templates
         VARIABLES => {
-            # Some of these are not really constants, and doing this messes up preloading.
-            # they are now fake constants.
-            constants => _load_constants(),
-
             # Function for retrieving global parameters.
             'Param' => sub { return Bugzilla->params->{$_[0]}; },
 
@@ -1120,18 +1115,12 @@ sub create {
             'is_mobile_browser' => sub { return Bugzilla->cgi->user_agent =~ /Mobi/ },
         },
     };
-
-    # under mod_perl, use a provider (template loader) that preloads all templates into memory
-    my $provider_class
-        = $ENV{MOD_PERL}
-        ? 'Bugzilla::Template::PreloadProvider'
-        : 'Template::Provider';
-
     # Use a per-process provider to cache compiled templates in memory across
     # requests.
     my $provider_key = join(':', @{ $config->{INCLUDE_PATH} });
-    $SHARED_PROVIDERS{$provider_key} ||= $provider_class->new($config);
-    $config->{LOAD_TEMPLATES} = [ $SHARED_PROVIDERS{$provider_key} ];
+    my $shared_providers = Bugzilla->process_cache->{shared_providers} ||= {};
+    $shared_providers->{$provider_key} ||= Template::Provider->new($config);
+    $config->{LOAD_TEMPLATES} = [ $shared_providers->{$provider_key} ];
 
     # BMO - use metrics subclass
     local $Template::Config::CONTEXT = Bugzilla->metrics_enabled()
@@ -1220,7 +1209,7 @@ sub precompile_templates {
     delete Bugzilla->request_cache->{template};
 
     # Clear out the cached Provider object
-    %SHARED_PROVIDERS = ();
+    Bugzilla->process_cache->{shared_providers} = undef;
 
     print install_string('done') . "\n" if $output;
 }
diff --git a/Bugzilla/Template/PreloadProvider.pm b/Bugzilla/Template/PreloadProvider.pm
deleted file mode 100644
index 2588b1a79..000000000
--- a/Bugzilla/Template/PreloadProvider.pm
+++ /dev/null
@@ -1,110 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-#
-# This Source Code Form is "Incompatible With Secondary Licenses", as
-# defined by the Mozilla Public License, v. 2.0.
-
-# This exists to implement the template-before_process hook.
-package Bugzilla::Template::PreloadProvider;
-
-use 5.10.1;
-use strict;
-use warnings;
-
-use base qw(Template::Provider);
-
-use File::Find ();
-use Cwd ();
-use File::Spec;
-use Template::Constants qw( STATUS_ERROR );
-use Template::Document;
-use Template::Config;
-
-use Bugzilla::Util qw(trick_taint);
-
-sub _init {
-    my $self = shift;
-    $self->SUPER::_init(@_);
-
-    my $path   = $self->{INCLUDE_PATH};
-    my $cache  = $self->{_BZ_CACHE} = {};
-    my $search = $self->{_BZ_SEARCH} = {};
-
-    foreach my $template_dir (@$path) {
-        $template_dir = Cwd::realpath($template_dir);
-        my $wanted = sub {
-            my ( $name, $dir ) = ($File::Find::name, $File::Find::dir);
-            if ( $name =~ /\.tmpl$/ ) {
-                my $key = $name;
-                $key =~ s/^\Q$template_dir\///;
-                unless ($search->{$key}) {
-                    $search->{$key} = $name;
-                }
-                trick_taint($name);
-                my $data = {
-                    name => $key,
-                    text => do {
-                        open my $fh, '<:utf8', $name or die "cannot open $name";
-                        local $/ = undef;
-                        scalar <$fh>; # $fh is closed it goes out of scope
-                    },
-                    time => (stat($name))[9],
-                };
-                trick_taint($data->{text}) if $data->{text};
-                $cache->{$name} = $self->_bz_compile($data) or die "compile error: $name";
-            }
-        };
-        File::Find::find( { wanted => $wanted, no_chdir => 1 }, $template_dir );
-    }
-
-    return $self;
-}
-
-sub fetch {
-    my ($self, $name, $prefix) = @_;
-    my $file;
-    if (File::Spec->file_name_is_absolute($name)) {
-        $file = $name;
-    }
-    elsif ($name =~ m#^\./#) {
-        $file = File::Spec->rel2abs($name);
-    }
-    else {
-        $file = $self->{_BZ_SEARCH}{$name};
-    }
-
-    if (not $file) {
-        return ("cannot find file - $name ($file)", STATUS_ERROR);
-    }
-
-    if ($self->{_BZ_CACHE}{$file}) {
-        return ($self->{_BZ_CACHE}{$file}, undef);
-    }
-    else {
-        return ("unknown file - $file", STATUS_ERROR);
-    }
-}
-
-sub _bz_compile {
-    my ($self, $data) = @_;
-
-    my $parser = $self->{PARSER} ||= Template::Config->parser( $self->{PARAMS} )
-        || return ( Template::Config->error(), STATUS_ERROR );
-
-    # discard the template text - we don't need it any more
-    my $text = delete $data->{text};
-
-    # call parser to compile template into Perl code
-    if (my $parsedoc = $parser->parse($text, $data)) {
-        $parsedoc->{METADATA} = {
-            'name' => $data->{name},
-            'modtime' => $data->{time},
-            %{ $parsedoc->{METADATA} },
-        };
-
-        return Template::Document->new($parsedoc);
-    }
-}
-
-1;
diff --git a/mod_perl.pl b/mod_perl.pl
index f3beb88db..0a0a0df6a 100644
--- a/mod_perl.pl
+++ b/mod_perl.pl
@@ -79,9 +79,6 @@ $Bugzilla::extension_packages = Bugzilla::Extension->load_all();
 
 Bugzilla->preload_features();
 
-# Force instantiation of template so Bugzilla::Template::PreloadProvider can do its magic.
-Bugzilla->template;
-
 # Have ModPerl::RegistryLoader pre-compile all CGI scripts.
 my $rl = new ModPerl::RegistryLoader();
 # If we try to do this in "new" it fails because it looks for a