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Multisite: improve `sites_pre_query` and `networks_pre_query` filters, avoiding db queries. 

Improve the `pre_query` filters in multisite classes introduced in r44983. Return (non null) values immediately,
avoiding the database queries entirely, similar to other `pre_query` filters.

Props spacedmonkey, SergeyBiryukov, felipeelia.
Fixes #47599.



git-svn-id: https://develop.svn.wordpress.org/trunk@46100 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Adam Silverstein 2019-09-12 22:16:08 +00:00
parent b979a99355
commit 2b4cecf316
4 changed files with 79 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
src/wp-includes/class-wp-network-query.php
View File

@ -197,50 +197,57 @@ class WP_Network_Query {
*/
do_action_ref_array( 'pre_get_networks', array( &$this ) );
$network_ids = null;
$network_data = null;
/**
* Filter the sites array before the query takes place.
* Filter the network data before the query takes place.
*
* Return a non-null value to bypass WordPress's default site queries.
* Return a non-null value to bypass WordPress's default network queries.
*
* The expected return type from this filter depends on the value passed in the request query_vars.
* When `$this->query_vars['count']` is set, the filter should return the network count as an int.
* When `'ids' === $this->query_vars['fields']`, the filter should return an array of network ids.
* Otherwise the filter should return an array of WP_Network objects.
*
* @since 5.2.0
*
* @param array|null $site_ids Return an array of site data to short-circuit WP's site query,
* or null to allow WP to run its normal queries.
* @param WP_Network_Query $this The WP_Network_Query instance, passed by reference.
* @param array|null $network_data Return an array of network data to short-circuit WP's network query,
* the network count as an integer if `$this->query_vars['count']` is set,
* or null to allow WP to run its normal queries.
* @param WP_Network_Query $this The WP_Network_Query instance, passed by reference.
*/
$network_ids = apply_filters_ref_array( 'networks_pre_query', array( $network_ids, &$this ) );
$network_data = apply_filters_ref_array( 'networks_pre_query', array( $network_data, &$this ) );
if ( null === $network_ids ) {
if ( null !== $network_data ) {
return $network_data;
}
// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
// Ignore the $fields argument as the queried result will be the same regardless.
unset( $_args['fields'] );
// Ignore the $fields argument as the queried result will be the same regardless.
unset( $_args['fields'] );
$key = md5( serialize( $_args ) );
$last_changed = wp_cache_get_last_changed( 'networks' );
$key = md5( serialize( $_args ) );
$last_changed = wp_cache_get_last_changed( 'networks' );
$cache_key = "get_network_ids:$key:$last_changed";
$cache_value = wp_cache_get( $cache_key, 'networks' );
$cache_key = "get_network_ids:$key:$last_changed";
$cache_value = wp_cache_get( $cache_key, 'networks' );
if ( false === $cache_value ) {
$network_ids = $this->get_network_ids();
if ( $network_ids ) {
$this->set_found_networks();
}
$cache_value = array(
'network_ids' => $network_ids,
'found_networks' => $this->found_networks,
);
wp_cache_add( $cache_key, $cache_value, 'networks' );
} else {
$network_ids = $cache_value['network_ids'];
$this->found_networks = $cache_value['found_networks'];
if ( false === $cache_value ) {
$network_ids = $this->get_network_ids();
if ( $network_ids ) {
$this->set_found_networks();
}
$cache_value = array(
'network_ids' => $network_ids,
'found_networks' => $this->found_networks,
);
wp_cache_add( $cache_key, $cache_value, 'networks' );
} else {
$network_ids = $cache_value['network_ids'];
$this->found_networks = $cache_value['found_networks'];
}
if ( $this->found_networks && $this->query_vars['number'] ) {

65
src/wp-includes/class-wp-site-query.php
View File

@ -288,50 +288,57 @@ class WP_Site_Query {
$this->meta_query_clauses = $this->meta_query->get_sql( 'blog', $wpdb->blogs, 'blog_id', $this );
}
$site_ids = null;
$site_data = null;
/**
* Filter the sites array before the query takes place.
* Filter the site data before the get_sites query takes place.
*
* Return a non-null value to bypass WordPress's default site queries.
*
* The expected return type from this filter depends on the value passed in the request query_vars:
* When `$this->query_vars['count']` is set, the filter should return the site count as an int.
* When `'ids' == $this->query_vars['fields']`, the filter should return an array of site ids.
* Otherwise the filter should return an array of WP_Site objects.
*
* @since 5.2.0
*
* @param array|null $site_ids Return an array of site data to short-circuit WP's site query,
* or null to allow WP to run its normal queries.
* @param WP_Site_Query $this The WP_Site_Query instance, passed by reference.
* @param array|int|null $site_data Return an array of site data to short-circuit WP's site query,
* the site count as an integer if `$this->query_vars['count']` is set,
* or null to run the normal queries.
* @param WP_Site_Query $this The WP_Site_Query instance, passed by reference.
*/
$site_ids = apply_filters_ref_array( 'sites_pre_query', array( $site_ids, &$this ) );
$site_data = apply_filters_ref_array( 'sites_pre_query', array( $site_data, &$this ) );
if ( null === $site_ids ) {
if ( null !== $site_data ) {
return $site_data;
}
// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
// Ignore the $fields argument as the queried result will be the same regardless.
unset( $_args['fields'] );
// Ignore the $fields argument as the queried result will be the same regardless.
unset( $_args['fields'] );
$key = md5( serialize( $_args ) );
$last_changed = wp_cache_get_last_changed( 'sites' );
$key = md5( serialize( $_args ) );
$last_changed = wp_cache_get_last_changed( 'sites' );
$cache_key = "get_sites:$key:$last_changed";
$cache_value = wp_cache_get( $cache_key, 'sites' );
$cache_key = "get_sites:$key:$last_changed";
$cache_value = wp_cache_get( $cache_key, 'sites' );
if ( false === $cache_value ) {
$site_ids = $this->get_site_ids();
if ( $site_ids ) {
$this->set_found_sites();
}
$cache_value = array(
'site_ids' => $site_ids,
'found_sites' => $this->found_sites,
);
wp_cache_add( $cache_key, $cache_value, 'sites' );
} else {
$site_ids = $cache_value['site_ids'];
$this->found_sites = $cache_value['found_sites'];
if ( false === $cache_value ) {
$site_ids = $this->get_site_ids();
if ( $site_ids ) {
$this->set_found_sites();
}
$cache_value = array(
'site_ids' => $site_ids,
'found_sites' => $this->found_sites,
);
wp_cache_add( $cache_key, $cache_value, 'sites' );
} else {
$site_ids = $cache_value['site_ids'];
$this->found_sites = $cache_value['found_sites'];
}
if ( $this->found_sites && $this->query_vars['number'] ) {

9
tests/phpunit/tests/multisite/networkQuery.php
View File

@ -525,6 +525,7 @@ if ( is_multisite() ) :
/**
* @ticket 45749
* @ticket 47599
*/
public function test_networks_pre_query_filter_should_bypass_database_query() {
global $wpdb;
@ -534,11 +535,7 @@ if ( is_multisite() ) :
$num_queries = $wpdb->num_queries;
$q = new WP_Network_Query();
$results = $q->query(
array(
'fields' => 'ids',
)
);
$results = $q->query( array() );
remove_filter( 'networks_pre_query', array( __CLASS__, 'filter_networks_pre_query' ), 10, 2 );
@ -546,7 +543,7 @@ if ( is_multisite() ) :
$this->assertSame( $num_queries, $wpdb->num_queries );
// We manually inserted a non-existing site and overrode the results with it.
$this->assertSame( array( 555 ), $q->networks );
$this->assertSame( array( 555 ), $results );
// Make sure manually setting total_users doesn't get overwritten.
$this->assertEquals( 1, $q->found_networks );

9
tests/phpunit/tests/multisite/siteQuery.php
View File

@ -914,6 +914,7 @@ if ( is_multisite() ) :
/**
* @ticket 45749
* @ticket 47599
*/
public function test_sites_pre_query_filter_should_bypass_database_query() {
global $wpdb;
@ -923,11 +924,7 @@ if ( is_multisite() ) :
$num_queries = $wpdb->num_queries;
$q = new WP_Site_Query();
$results = $q->query(
array(
'fields' => 'ids',
)
);
$results = $q->query( array() );
remove_filter( 'sites_pre_query', array( __CLASS__, 'filter_sites_pre_query' ), 10, 2 );
@ -935,7 +932,7 @@ if ( is_multisite() ) :
$this->assertSame( $num_queries, $wpdb->num_queries );
// We manually inserted a non-existing site and overrode the results with it.
$this->assertSame( array( 555 ), $q->sites );
$this->assertSame( array( 555 ), $results );
// Make sure manually setting total_users doesn't get overwritten.
$this->assertEquals( 1, $q->found_sites );