petermolnar/wp-ffpc
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Merge pull request #25 from plescheff/master

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Implemented new invalidation method; added filter hook.
This commit is contained in:
Peter Molnar 2014-09-05 09:29:07 +01:00
commit 815cf8e045
2 changed files with 74 additions and 13 deletions
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71
wp-ffpc-backend.php
View file

@ -85,6 +85,27 @@ class WP_FFPC_Backend {
}
public static function parse_urimap($uri, $default_urimap=null) {
$uri_parts = parse_url( $uri );
$uri_map = array(
'$scheme' => $uri_parts['scheme'],
'$host' => $uri_parts['host'],
'$request_uri' => $uri_parts['path']
);
if (is_array($default_urimap)) {
$uri_map = array_merge($default_urimap, $uri_map);
}
return $uri_map;
}
public static function map_urimap($urimap, $subject) {
return str_replace(array_keys($urimap), $urimap, $subject);
}
/*********************** PUBLIC / PROXY FUNCTIONS ***********************/
/**
@ -95,7 +116,7 @@ class WP_FFPC_Backend {
*/
public function key ( &$prefix ) {
/* data is string only with content, meta is not used in nginx */
$key = $prefix . str_replace ( array_keys( $this->urimap ), $this->urimap, $this->options['key'] );
$key = $prefix . self::map_urimap($this->urimap, $this->options['key']);
$this->log ( sprintf( __translate__( 'original key configuration: %s', $this->plugin_constant ), $this->options['key'] ) );
$this->log ( sprintf( __translate__( 'setting key to: %s', $this->plugin_constant ), $key ) );
return $key;
@ -200,6 +221,17 @@ class WP_FFPC_Backend {
$this->taxonomy_links( $to_clear );
}
/* clear pasts index page if settings requires it */
if ( $this->options['invalidation_method'] == 3 ) {
$posts_page_id = get_option( 'page_for_posts' );
$post_type = get_post_type( $post_id );
if ($post_type === 'post' && $posts_page_id != $post_id) {
$this->clear($posts_page_id, $force);
}
}
/* if there's a post id pushed, it needs to be invalidated in all cases */
if ( !empty ( $post_id ) ) {
@ -207,26 +239,41 @@ class WP_FFPC_Backend {
if ( !function_exists('get_permalink') )
include_once ( ABSPATH . 'wp-includes/link-template.php' );
/* get path from permalink */
$path = substr ( get_permalink( $post_id ) , 7 );
/* get permalink */
$permalink = get_permalink( $post_id );
/* no path, don't do anything */
if ( empty( $path ) ) {
if ( empty( $permalink ) ) {
$this->log ( sprintf( __translate__( 'unable to determine path from Post Permalink, post ID: %s', $this->plugin_constant ), $post_id ), LOG_WARNING );
return false;
}
if ( isset($_SERVER['HTTPS']) && ( ( strtolower($_SERVER['HTTPS']) == 'on' ) || ( $_SERVER['HTTPS'] == '1' ) ) )
$protocol = 'https://';
else
$protocol = 'http://';
/*
* It is possible that post/page is paginated with <!--nextpage-->
* Wordpress doesn't seem to expose the number of pages via API.
* So let's just count it.
*/
$content_post = get_post( $post_id );
$content = $content_post->post_content;
$number_of_pages = 1 + (int)preg_match_all('/<!--nextpage-->/', $content, $matches);
/* elements to clear
values are keys, faster to process and eliminates duplicates
*/
$to_clear[ $protocol . $path ] = true;
$current_page_id = '';
do {
/* urimap */
$urimap = self::parse_urimap($permalink, $this->urimap);
$urimap['$request_uri'] = $urimap['$request_uri'] . ($current_page_id ? $current_page_id . '/' : '');
$clear_cache_key = self::map_urimap($urimap, $this->options['key']);
$to_clear[ $clear_cache_key ] = true;
$current_page_id = 1+(int)$current_page_id;
} while ($number_of_pages>1 && $current_page_id<=$number_of_pages);
}
/* Hook to custom clearing array. */
$to_clear = apply_filters('wp_ffpc_to_clear_array', $to_clear, $post_id);
foreach ( $to_clear as $link => $dummy ) {
/* clear all feeds as well */
$to_clear[ $link. 'feed' ] = true;

16
wp-ffpc-class.php
View file

@ -140,6 +140,7 @@ class WP_FFPC extends PluginAbstract {
0 => __( 'flush cache' , $this->plugin_constant ),
1 => __( 'only modified post' , $this->plugin_constant ),
2 => __( 'modified post and all taxonomies' , $this->plugin_constant ),
3 => __( 'modified post and posts index page' , $this->plugin_constant ),
);
/* map of possible key masks */
@ -483,7 +484,20 @@ class WP_FFPC extends PluginAbstract {
<select name="invalidation_method" id="invalidation_method">
<?php $this->print_select_options ( $this->select_invalidation_method , $this->options['invalidation_method'] ) ?>
</select>
<span class="description"><?php _e('Select cache invalidation method. <ol><li><em>flush cache</em> - clears everything in storage, <strong>including values set by other applications</strong></li><li><em>only modified post</em> - clear only the modified posts entry, everything else remains in cache</li><li><em>modified post and all taxonomies</em> - removes all taxonomy term cache ( categories, tags, home, etc ) and the modified post as well</li></ol>', $this->plugin_constant); ?></span>
<div class="description"><?php _e('Select cache invalidation method.', $this->plugin_constant); ?>
<ol>
<?php
$invalidation_method_description = array(
'clears everything in storage, <strong>including values set by other applications</strong>',
'clear only the modified posts entry, everything else remains in cache',
'removes all taxonomy term cache ( categories, tags, home, etc ) and the modified post as well<br><strong>Caution! Slows down page/post saving when there are many tags.</strong>',
'clear cache for modified post and posts index page'
);
foreach ($this->select_invalidation_method AS $current_key => $current_invalidation_method) {
printf('<li><em>%1$s</em> - %2$s</li>', $current_invalidation_method, $invalidation_method_description[$current_key]);
} ?>
</ol>
</div>
</dd>
<dt>