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Scrubber

Scrubber is a minimal PHP package with only one dependency, it allows you to define a PHP configuration file which can help update database fields with various predefined or random values.

This is perfect for when you need a copy of a production database to work on and need to erase sensitive content.

Installation

Install via composer by running: composer require clntdev/scrubber

Usage

Configuration File

The package relies on a valid PHP configuration file to function correctly, this file returns a simple array which maps out the tables, fields and their details so it knows which handler to use.

A handler is detected from the value given for a field.

• A field can have a primary_key defined on it if you want to use an alternative column to fetch database records, the default is id.
• A field can have a handler defined on it if you wish to override the detected handler.
• A field can have a type defined on it which can be used to define the field as a certain data type such as pid for GDPR purposes (this is useful in the methods listed further down)

Here is an example configuration used in the unit tests:

Interfaces

This package implements two interfaces which classes need to be created for, these will then be passed into and used by the main Scrubber class.

Database Class

This class should implement the ClntDev\Scrubber\Contracts\DatabaseUpdate interface which will require an update and fetch method to be defined.

Define the fetch method to return an array of values such as IDs using the given $table and $primaryKey variables to fetch them from your chosen data source.

Define the update method to update your chosen data source using the given $table,$field and $value parameters.

Logger Class

This class should implement the ClntDev\Scrubber\Contracts\Logger interface which will require a log method to be defined.

Define the log method to log any given exception message thrown during the process to your preferred logging method.

Scrubber Class

Once the configuration file has been defined and the classes above setup, all that is left to do now is initialise the Scrubber class. This will allow the database update to be run and also fields listed out depending upon the type given.

The ClntDev\Scrubber\Scrubber class can be newed up normally or a static make method has been provided to make chain calls tidier:

Pass in the absolute path to the configuration file, the created database class and the created logger class.

Methods

run() - This is the main method and will run all of the handlers from the parsed configuration file modifying the database.

getFieldList(string $type = 'pid') - This method will return an array of fields for the given type, this defaults to pid.

getFieldListAsString(string $type = 'pid') - This method will return a comma separated string of fields for the given type, this defaults to pid.

Built-in Handlers

• Faker - Randomly generate strings using the fakerphp/faker library with a value input such as faker.firstName
• Callable - Pass closures or callable classes
• Object - Pass an object with a handle or __invoke method on it
• Integer - Casts the value input to an integer if numeric
• String - Casts the value input to a string