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Hagakure – Yet Another Error Reporter

Περιγραφή

Have you ever seen an error log like the one below?

PHP 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

This means that PHP memory limit is exhausted while retrieving data from a database. In any case, this happens when your site has big data and makes insane loops inside.

But we want to know that which plugin tried to retrieve data?

Hagakure adds extra information to error.log file when wp-db.php causes memory limit error:

[08-May-2019 10:28:37 UTC] wpdb Error Backtrace:
#1      Kunoichi\Hagakure\DbLogger->filter_query()      /app/public/wp-includes/class-wp-hook.php       Line 286
#2      WP_Hook->apply_filters()        /app/public/wp-includes/plugin.php      Line 208
#3      apply_filters   /app/public/wp-includes/wp-db.php       Line 1871
#4      wpdb->query()   /app/public/wp-includes/wp-db.php       Line 2579
#5      wpdb->get_results()     /app/public/wp-includes/class-wp-query.php      Line 2979
#6      WP_Query->get_posts()   /app/public/wp-includes/class-wp-query.php      Line 3387
#7      WP_Query->query()       /app/public/wp-includes/post.php        Line 1961
#8      get_posts       /app/public/wp-content/plugins/hagakure/hagakure.php    Line 34
#9      {closure}       /app/public/wp-includes/class-wp-hook.php       Line 286
#10     WP_Hook->apply_filters()        /app/public/wp-includes/class-wp-hook.php       Line 310
#11     WP_Hook->do_action()    /app/public/wp-includes/plugin.php      Line 465
#12     do_action       /app/public/wp-includes/template-loader.php     Line 13
#13     require_once    /app/public/wp-blog-header.php  Line 19
#14     require /app/public/index.php   Line 17

This log will always follow the memory limit Fatal Error by wp-db.php. Now you can find #8 calls get_posts repeatedly.

We recommend watching logs with notification services like CloudWatch Logs.
This error occurs in the productional environment, and you may not have a chance to see it occurs.
We use Hagakure with our hosting service, please look forward to seeing our blog published and describing the integration!

This plugin also adds debug backtrace to error logs. To modify the error level to a detailed backtrace, define the constant:

define( 'HAGAKURE_ERROR_LEVEL', E_NOTICE | E_USER_WARNING | E_WARNING | E_USER_ERROR );

Besides that, if SAVEQUERIES is set true, the slow query log will be logged with PHP debug backtrace. This helps you to debug.

Acknowledgements

The base text for dummy content is “Three Ghost Story” by Charles Dickens. The text file is modified the one of Project Gutenberg.

Εγκατάσταση

  1. Upload hagakure folder to the /wp-content/plugins directory.
  2. Activate the plugin through the ‘Plugins’ menu in WordPress.
  3. That’s it. This plugin will work as background.

Συχνές Ερωτήσεις

How can I contribute?

We host this plugin on GitHub kuno1/hagakure. Please feel free to send PRs or to make issues.

Κριτικές

10 Μαΐου 2019
This plugin makes it easy to find the root cause of PHP Fatal error: Allowed memory size of xxxxxx bytes exhausted error. AWESOME.
Ανάγνωση όλων των 2 κριτικών

Συνεισφέροντες & Προγραμματιστές

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Σύνοψη αλλαγών

1.2.0

  • Slow query can be logged with the backtraces.

1.1.0

  • Add Request URI to backtrace.

1.0.0

  • Add warning and notice detail handler.

0.8.0

  • First Release.