Error thrown when ACLs are used
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I’m seeing an error thrown when using the plugin with ACLs. Really hoping it’s not just me. I can’t click on the Diagnostics tab to get more detailed info but here’s what WordPress spits out in Debug mode:
PHP Fatal error: Uncaught TypeError: strlen(): Argument #1 ($string) must be of type string, array given in /<docroot>/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/Factory.php:167
I’ve replaced part of the path with <docroot> but that shouldn’t matter.
In wp-config.php, the line that seems to kill it is the WP_REDIS_PASSWORD setting.
define(‘WP_REDIS_PASSWORD’, [‘myusername’, ‘mypassword’]);
If I remove that line all is good.
The plugin has worked fine for many months until I upgraded it to the latest version. Apologies but I don’t remember the previous version.
Hoping this is just an ACL related bug that was introduced in the latest version?
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Yes Redis ACLs is what i’m referring to.
When I remove WP_REDIS_PASSWORD, the Settings page throws the error “NOAUTH Authentication required” as expected. Which to me means it can talk to the redis server, but not authenticate. The Metrics and Diagnostics tabs also become clickable.
By the way a detail I forgot to include yesterday is that I can use redis-cli no problem. The server is up, and the ACL itself works. I can AUTH as the user being used and write keys without problem. So no matter what user I use, the plugin does the same thing, even with the “default” user (i’m using Redis 7).
The settings screen then displays this error:
There has been a critical error on this website. Please check your site admin email inbox for instructions.
And the PHP error I quoted in my initial post is outputted by WordPress in Debug mode. The Metrics and Diagnostics tab also become unclickable so I can’t get Diagnostics while in that state. That error is also in the mail that comes through.
And this is the error in the mail:
Error Details ============= An error of type E_ERROR was caused in line 167 of the file /<docroot>/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/Factory.php. Error message: Uncaught TypeError: strlen(): Argument #1 ($string) must be of type string, array given in /<docroot>/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/Factory.php:167 Stack trace: #0 /<docroot>/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/Factory.php(167): strlen() #1 /<docroot>/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Connection/Factory.php(100): Predis\Connection\Factory->prepareConnection() #2 /<docroot>/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Client.php(127): Predis\Connection\Factory->create() #3 /<docroot>/wp-content/plugins/redis-cache/dependencies/predis/predis/src/Client.php(68): Predis\Client::createConnection() #4 /<docroot>/wp-content/plugins/redis-cache/includes/class-predis.php(119): Predis\Client->__construct() #5 /<docroot>/wp-content/plugins/redis-cache/includes/class-plugin.php(592): Rhubarb\RedisCache\Predis->connect() #6 /<docroot>/wp-content/plugins/redis-cache/includes/ui/tabs/overview.php(16): Rhubarb\RedisCache\Plugin->check_redis_connection() #7 /<docroot>/wp-content/plugins/redis-cache/includes/ui/class-tab.php(167): include('...') #8 /<docroot>/wp-content/plugins/redis-cache/includes/ui/settings.php(59): Rhubarb\RedisCache\UI\Tab->display() #9 /<docroot>/wp-content/plugins/redis-cache/includes/class-plugin.php(202): require_once('...') #10 /<docroot>/wp-includes/class-wp-hook.php(308): Rhubarb\RedisCache\Plugin->show_admin_page() #11 /<docroot>/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters() #12 /<docroot>/wp-includes/plugin.php(517): WP_Hook->do_action() #13 /<docroot>/wp-admin/admin.php(259): do_action() #14 /<docroot>/wp-admin/options-general.php(10): require_once('...') #15 {main} thrownIt’s just the two line configuration below:
define('WP_REDIS_PREFIX', 'www.<domainname>:'); define('WP_REDIS_PASSWORD', ['<username>', '<password>']);Bits in <> replaced with the actual values. The config is at the top of wp-config.php above everything else.
Same thing happens.
define( 'WP_REDIS_HOST', '127.0.0.1' ); define( 'WP_REDIS_PORT', 6379 ); define( 'WP_REDIS_PREFIX', 'www.<domainname>:' );With those three lines in there the plugin seems happy, with the exception of needing authentication. But as soon as I add WP_REDIS_PASSWORD, the critical error shows up.
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