Have you ever seen an error log like the one below?<\/p>\n\n
\nPHP Fatal error: Allowed memory size of xxxxxx bytes exhausted (tried to allocate xxx bytes) in \/var\/www\/wordpress\/wp-includes\/wp-db.php on line 2007<\/p>\n<\/blockquote>\n\n
This means that PHP memory limit<\/a> is exhausted while retrieving data from a database. In any case, this happens when your site has big data and makes insane loops inside.<\/p>\n\n
But we want to know that which plugin tried to retrieve data?<\/strong><\/p>\n\n
Hagakure adds extra information to error.log file when
wp-db.php<\/code> causes memory limit error:<\/p>\n\n[08-May-2019 10:28:37 UTC] wpdb Error Backtrace:\n#1 Kunoichi\\Hagakure\\DbLogger->filter_query() \/app\/public\/wp-includes\/class-wp-hook.php Line 286\n#2 WP_Hook->apply_filters() \/app\/public\/wp-includes\/plugin.php Line 208\n#3 apply_filters \/app\/public\/wp-includes\/wp-db.php Line 1871\n#4 wpdb->query() \/app\/public\/wp-includes\/wp-db.php Line 2579\n#5 wpdb->get_results() \/app\/public\/wp-includes\/class-wp-query.php Line 2979\n#6 WP_Query->get_posts() \/app\/public\/wp-includes\/class-wp-query.php Line 3387\n#7 WP_Query->query() \/app\/public\/wp-includes\/post.php Line 1961\n#8 get_posts \/app\/public\/wp-content\/plugins\/hagakure\/hagakure.php Line 34\n#9 {closure} \/app\/public\/wp-includes\/class-wp-hook.php Line 286\n#10 WP_Hook->apply_filters() \/app\/public\/wp-includes\/class-wp-hook.php Line 310\n#11 WP_Hook->do_action() \/app\/public\/wp-includes\/plugin.php Line 465\n#12 do_action \/app\/public\/wp-includes\/template-loader.php Line 13\n#13 require_once \/app\/public\/wp-blog-header.php Line 19\n#14 require \/app\/public\/index.php Line 17\n#15 URI: \/?p=1<\/pre>\n\nThis log will always follow the memory limit Fatal Error by
wp-db.php<\/code>. Now you can find#8<\/code> callsget_posts<\/code> repeatedly.<\/p>\n\nWe recommend watching logs with notification services like CloudWatch Logs<\/a>.\nThis error occurs in the productional environment, and you may not have a chance to see it occurs.\nWe use Hagakure with our hosting service<\/a>, please look forward to seeing our blog published<\/a> and describing the integration!<\/p>\n\n
This plugin also adds debug backtrace to error logs. To modify the error level to a detailed backtrace, define the constant in
wp-config.php<\/code> or somewhere else:<\/p>\n\ndefine( 'HAGAKURE_ERROR_LEVEL', E_NOTICE | E_USER_WARNING | E_WARNING | E_USER_ERROR );<\/pre>\n\nBesides that, if
SAVEQUERIES<\/code> is settrue<\/code>, the slow query log will be logged with PHP debug backtrace. This helps you to debug.<\/p>\n\nAcknowledgements<\/h3>\n\n
The base text for dummy content is \"Three Ghost Story\" by Charles Dickens. The text file is modified the one of Project Gutenberg<\/a>.<\/p>\n\n\n
\n
- Upload
hagakure<\/code> folder to the\/wp-content\/plugins<\/code> directory.<\/li>\n- Activate the plugin through the 'Plugins' menu in WordPress.<\/li>\n
- That's it. This plugin will work as background.<\/li>\n<\/ol>\n\n\n
\n
How can I contribute?<\/h3><\/dt>\n
We host this plugin on GitHub tarosky\/hagakure<\/a>. Please feel free to send PRs<\/a> or to make issues<\/a>.<\/p><\/dd>\n\n<\/dl>\n\n\n
1.3.1<\/h4>\n\n
\n
- Bump required PHP and WP version.<\/li>\n
- Fix memory limit error log logic.<\/li>\n
- Move the ownership to TAROSKY Inc from Kunoichi Inc. Tarosky is a parent company of Kunoichi Inc. Developers are the same \u263a\ufe0f<\/li>\n<\/ul>\n\n
1.2.0<\/h4>\n\n
\n
- Slow query can be logged with the backtraces.<\/li>\n<\/ul>\n\n
1.1.0<\/h4>\n\n
\n
- Add Request URI to backtrace.<\/li>\n<\/ul>\n\n
1.0.0<\/h4>\n\n
\n
- Add warning and notice detail handler.<\/li>\n<\/ul>\n\n
0.8.0<\/h4>\n\n
\n
- First Release.<\/li>\n<\/ul>","raw_excerpt":"A WordPress plugin to clarify meaningless errors like "Allowed memory size of xxxxxxxx bytes exhausted".","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin\/103782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin"}],"about":[{"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/types\/plugin"}],"replies":[{"embeddable":true,"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/comments?post=103782"}],"author":[{"embeddable":true,"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wporg\/v1\/users\/tarosky"}],"wp:attachment":[{"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/media?parent=103782"}],"wp:term":[{"taxonomy":"plugin_section","embeddable":true,"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_section?post=103782"},{"taxonomy":"plugin_tags","embeddable":true,"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_tags?post=103782"},{"taxonomy":"plugin_category","embeddable":true,"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_category?post=103782"},{"taxonomy":"plugin_contributors","embeddable":true,"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_contributors?post=103782"},{"taxonomy":"plugin_business_model","embeddable":true,"href":"https:\/\/pcd.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_business_model?post=103782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}