Cache write errors with Laravel Octane

[atymic]

Hi,

We're running the Purifier fine normally, but after trying octane we started receiving lots of errors related to the cache directory not being writeable.

I'm not sure exactly what is causing this, thought I suspect what is happening is that every single new request is creating a cache file on the disk, and this is causing our lambda (limited to 250mb storage) to run out of space.

I will attempt to reproduce and debug further, curious if anyone else has run into similar issues.

Edit: To clarify, it initially works fine then errors out later.

ErrorException: Directory /var/task/storage/app/purifier not writable. 
#101 /vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php(295): Illuminate\Foundation\Bootstrap\HandleExceptions::handleError
#100 /vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(256): Illuminate\Foundation\Bootstrap\HandleExceptions::{closure:Illuminate\Foundation\Bootstrap\HandleExceptions::forwardsTo():255}
#99 [internal](0): trigger_error
#98 /vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php(295): HTMLPurifier_DefinitionCache_Serializer::_testPermissions
#97 /vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php(238): HTMLPurifier_DefinitionCache_Serializer::_prepareDir
#96 /vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php(125): HTMLPurifier_DefinitionCache_Serializer::cleanup
#95 /vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Decorator.php(108): HTMLPurifier_DefinitionCache_Decorator::cleanup
#94 /vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php(72): HTMLPurifier_DefinitionCache_Decorator_Cleanup::get
#93 /vendor/ezyang/htmlpurifier/library/HTMLPurifier/Config.php(579): HTMLPurifier_Config::getDefinition
#92 /vendor/ezyang/htmlpurifier/library/HTMLPurifier/Config.php(654): HTMLPurifier_Config::maybeGetRawHTMLDefinition
#91 /vendor/mews/purifier/src/Purifier.php(103): Mews\Purifier\Purifier::addCustomDefinition
#90 /vendor/mews/purifier/src/Purifier.php(240): Mews\Purifier\Purifier::getConfig
#89 /vendor/mews/purifier/src/Purifier.php(71): Mews\Purifier\Purifier::setUp
#88 /vendor/mews/purifier/src/Purifier.php(54): Mews\Purifier\Purifier::__construct
#87 /vendor/mews/purifier/src/PurifierServiceProvider.php(51): Mews\Purifier\PurifierServiceProvider::{closure:Mews\Purifier\PurifierServiceProvider::register():50}

[alih70442]

It seems the directory app/purifier was created before and also do not have correct permission to write using purifier. I think if you just delete it, it going to be ok.