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Prefix the `notoptions` cache key in the multisite `site-options` group with `$wpdb->siteid` to avoid collisions and race conditions when using a fancy multi-network setup. Adds unit test. 

Fixes #25883.



git-svn-id: https://develop.svn.wordpress.org/trunk@26304 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Scott Taylor 2013-11-21 19:06:26 +00:00
parent 731d102afb
commit 36a5af537e
2 changed files with 30 additions and 7 deletions
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17
src/wp-includes/option.php
View File

@ -757,7 +757,8 @@ function get_site_option( $option, $default = false, $use_cache = true ) {
return $pre;
// prevent non-existent options from triggering multiple queries
$notoptions = wp_cache_get( 'notoptions', 'site-options' );
$notoptions_key = "{$wpdb->siteid}:notoptions";
$notoptions = wp_cache_get( $notoptions_key, 'site-options' );
if ( isset( $notoptions[$option] ) )
return apply_filters( 'default_site_option_' . $option, $default );
@ -779,7 +780,7 @@ function get_site_option( $option, $default = false, $use_cache = true ) {
wp_cache_set( $cache_key, $value, 'site-options' );
} else {
$notoptions[$option] = true;
wp_cache_set( 'notoptions', $notoptions, 'site-options' );
wp_cache_set( $notoptions_key, $notoptions, 'site-options' );
$value = apply_filters( 'default_site_option_' . $option, $default );
}
}
@ -812,6 +813,7 @@ function add_site_option( $option, $value ) {
wp_protect_special_option( $option );
$value = apply_filters( 'pre_add_site_option_' . $option, $value );
$notoptions_key = "{$wpdb->siteid}:notoptions";
if ( !is_multisite() ) {
$result = add_option( $option, $value );
@ -819,7 +821,7 @@ function add_site_option( $option, $value ) {
$cache_key = "{$wpdb->siteid}:$option";
// Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query
$notoptions = wp_cache_get( 'notoptions', 'site-options' );
$notoptions = wp_cache_get( $notoptions_key, 'site-options' );
if ( ! is_array( $notoptions ) || ! isset( $notoptions[$option] ) )
if ( false !== get_site_option( $option ) )
return false;
@ -835,10 +837,10 @@ function add_site_option( $option, $value ) {
wp_cache_set( $cache_key, $value, 'site-options' );
// This option exists now
$notoptions = wp_cache_get( 'notoptions', 'site-options' ); // yes, again... we need it to be fresh
$notoptions = wp_cache_get( $notoptions_key, 'site-options' ); // yes, again... we need it to be fresh
if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
unset( $notoptions[$option] );
wp_cache_set( 'notoptions', $notoptions, 'site-options' );
wp_cache_set( $notoptions_key, $notoptions, 'site-options' );
}
}
@ -922,10 +924,11 @@ function update_site_option( $option, $value ) {
if ( false === $old_value )
return add_site_option( $option, $value );
$notoptions = wp_cache_get( 'notoptions', 'site-options' );
$notoptions_key = "{$wpdb->siteid}:notoptions";
$notoptions = wp_cache_get( $notoptions_key, 'site-options' );
if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
unset( $notoptions[$option] );
wp_cache_set( 'notoptions', $notoptions, 'site-options' );
wp_cache_set( $notoptions_key, $notoptions, 'site-options' );
}
if ( !is_multisite() ) {

20
tests/phpunit/tests/option/siteOption.php
View File

@ -90,4 +90,24 @@ class Tests_Option_SiteOption extends WP_UnitTestCase {
$this->assertEquals( get_site_option( $option, $default ), $default );
$this->assertFalse( get_site_option( $option ) );
}
/**
* @group multisite
*/
function test_site_notoptions() {
global $wpdb;
$notoptions_key = "{$wpdb->siteid}:notoptions";
$_notoptions = wp_cache_get( 'notoptions', 'site-options' );
$this->assertEmpty( $_notoptions );
$_notoptions1 = wp_cache_get( $notoptions_key, 'site-options' );
$this->assertEmpty( $_notoptions1 );
get_site_option( 'burrito' );
$notoptions = wp_cache_get( 'notoptions', 'site-options' );
$this->assertEmpty( $notoptions );
$notoptions1 = wp_cache_get( $notoptions_key, 'site-options' );
$this->assertNotEmpty( $notoptions1 );
}
}