Guzzle Message Anonymizer Formatter

Anonymize or truncate parts of json or xml payloads and request headers before logging with a guzzle middleware.
For data protection you might not want to log personal data, like names, addresses etc in your requests.

Usage

Example usage for Json Payloads:

...
$formatter = new GuzzleMessageJsonAnonymizerFormatter(
    ['PersonalData'],
    $substitute = '*****',
    AbstractAnonymizerFormatter::DEBUG,
    ['Authorization' => '*****']
);
$loggerMiddleware = Middleware::log($logger, $formatter);
$stack->push($loggerMiddleware);
$config  = [
    ...
    'handler'  => $stack,
];
$client  = new Client($config);

This will log:

<<<<<<<<
HTTP/1.1 200 OK
Date: Thu, 18 Jun 2020 10:04:21 GMT
Content-Type: application/json
Authorization: *****
...
{
  ...
  "Payload": {
    "Foo": "Bar", 
    ...
    "PersonalData": "*****"
  }, 
  ...
}

Usage Symfony

Declare the Formatter service:

Freshcells\GuzzleMessageAnonymizerFormatter\GuzzleMessageXmlAnonymizerFormatter:
  arguments:
    $elements:
      - 'none:FirstName'
      - 'none:LastName'
    $attributes:
      - 'none:Customer[@Age]'
    $namespaces:
      none: 'http://namespace.de/middleware/payment/'
    $truncateElements
        VeryLongText: 200

Override existing message formatter of a logger middleware:

csa_guzzle.logger.message_formatter:
  alias: 'Freshcells\GuzzleMessageAnonymizerFormatter\GuzzleMessageXMLAnonymizerFormatter'

Or declare a dedicated anonymizer_logger middleware:

guzzle.middleware.anonymizer_logger:
  class: Closure
  factory: ['GuzzleHttp\Middleware', log]
  arguments: ['@monolog.logger', '@Freshcells\GuzzleMessageAnonymizerFormatter\GuzzleMessageXmlAnonymizerFormatter', 'info']
  tags:
    - { name: csa_guzzle.middleware, alias: anonymizer_logger }