ryan at livesite
Aug 28, 2009, 5:35 AM
Post #1 of 3
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This patch for Apache2::Reload does two things:
A) ignores require-hooks which exist in %INC. (fix)
B) reloads by file, not module name (fix?)
I consider B) to be a fix because I cannot imagine why anyone would
want the previous functionality. As such, the accompanying
configuration variable 'ReloadByModuleName' is used to enabled the old
behavior (as opposed to enabling the new behavior).
I was asked to include this patch inline in this email, however I know
the line-breaks will clobber the diff output, so I have attached it as
well.
Cheers,
-Ryan
--- Apache2/Reload.pm 2009-08-12 10:35:04.000000000 -0400
+++ Apache2/Reload.pm.v0.11 2009-08-28 08:28:25.000000000 -0400
@@ -20,7 +20,7 @@
use mod_perl2;
-our $VERSION = '0.10';
+our $VERSION = '0.11';
use Apache2::Const -compile => qw(OK);
@@ -86,6 +86,8 @@
my $DEBUG = ref($o) && (lc($o->dir_config("ReloadDebug") || '') eq
'on');
+ my $ReloadByModuleName = ref($o) &&
(lc($o->dir_config("ReloadByModuleName") || '') eq 'on'); +
my $TouchFile = ref($o) && $o->dir_config("ReloadTouchFile");
my $ConstantRedefineWarnings = ref($o) &&
@@ -138,6 +140,9 @@
my $file = $Apache2::Reload::INCS{$key};
next unless defined $file;
+ # TODO when $file is a hook, call the hook like require does
to
+ # determine the path (obtain a file handle). See %INC in
perlvar.
+ next if ref $file;
next if @watch_dirs && !grep { $file =~ /^$_/ } @watch_dirs;
warn "Apache2::Reload: Checking mtime of $key\n" if $DEBUG;
@@ -158,24 +163,27 @@
}
if ($mtime > $Stat{$file}) {
- push @changed, $key;
+ push @changed, [$key, $file];
}
$Stat{$file} = $mtime;
}
#First, let's unload all changed modules
- foreach my $module (@changed) {
- my $package = module_to_package($module);
+ foreach my $kvpair (@changed) {
+ my $package = module_to_package($kvpair->[0]);
ModPerl::Util::unload_package($package);
}
-
- #Then, let's reload them all, so that module dependencies can
satisfy
- #themselves in the correct order.
- foreach my $module (@changed) {
- my $package = module_to_package($module);
- require $module;
- warn("Apache2::Reload: process $$ reloading $package from
$module\n")
- if $DEBUG;
+
+ #Then, let's reload each changed file, so that module dependencies
can
+ #satisfy themselves in the correct order.
+ foreach my $kvpair (@changed) {
+ my $name = $ReloadByModuleName ? $kvpair->[0] : $kvpair->[1];
+ require $name;
+ if ($DEBUG) {
+ my $package = module_to_package($kvpair->[0]);
+ warn sprintf("Apache2::Reload: process %d reloading %s from
%s\n",
+ $$, $package, $kvpair->[1]);
+ }
}
return Apache2::Const::OK;
@@ -206,6 +214,7 @@
PerlSetVar ReloadAll Off
PerlSetVar ReloadModules "ModPerl::* Apache2::*"
#PerlSetVar ReloadDebug On
+ #PerlSetVar ReloadByModuleName On
# Reload a single module from within itself:
package My::Apache2::Module;
@@ -226,16 +235,28 @@
also do the check for modified modules, when a special touch-file has
been modified.
-Note that C<Apache2::Reload> operates on the current context of
-C<@INC>. Which means, when called as a C<Perl*Handler> it will not
-see C<@INC> paths added or removed by C<ModPerl::Registry> scripts, as
-the value of C<@INC> is saved on server startup and restored to that
-value after each request. In other words, if you want
-C<Apache2::Reload> to work with modules that live in custom C<@INC>
-paths, you should modify C<@INC> when the server is started. Besides,
-C<'use lib'> in the startup script, you can also set the C<PERL5LIB>
-variable in the httpd's environment to include any non-standard 'lib'
-directories that you choose. For example, to accomplish that you can
+Require-hooks, i.e., entries in %INC which are references, are
ignored. The +hook should modify %INC itself, adding the path to the
module file, for it to +be reloaded.
+
+C<Apache2::Reload> inspects and reloads the B<file> associated with a
given +module. Changes to @INC are not recognized, as it is the file
which is +being re-required, not the module name.
+
+In version 0.10 and earlier the B<module name>, not the file, is
re-required. +Meaning it operated on the the current context of @INC.
If you still want this +behavior set this environment variable in
I<httpd.conf>: +
+ PerlSetVar ReloadByModuleName On
+
+This means, when called as a C<Perl*Handler>, C<Apache2::Reload> will
not see +C<@INC> paths added or removed by C<ModPerl::Registry>
scripts, as the value of +C<@INC> is saved on server startup and
restored to that value after each +request. In other words, if you
want C<Apache2::Reload> to work with modules +that live in custom
C<@INC> paths, you should modify C<@INC> when the server is +started.
Besides, C<'use lib'> in the startup script, you can also set the
+C<PERL5LIB> variable in the httpd's environment to include any
non-standard +'lib' directories that you choose. For example, to
accomplish that you can include a line:
PERL5LIB=/home/httpd/perl/extra; export PERL5LIB
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Apache2-Reload.pm.patch
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