Writing custom loggers | Laravel Kafka [ K Laravel Kafka ](/) [Docs](/docs) [Blog](https://laravelkafka.com/blog) [GitHub](https://github.com/mateusjunges/laravel-kafka) Search ⌘K [ Login with GitHub Login ](https://laravelkafka.com/oauth/github/redirect) Docs for version selected v3.0 v2.13 v2.12 v2.11 v2.10 v2.9 v2.8 v1.13 - - [ Introduction ](/docs/v3.0/introduction) - [ Requirements ](/docs/v3.0/requirements) - [ Installation and Setup ](/docs/v3.0/installation-and-setup) - [ Questions and issues ](/docs/v3.0/questions-and-issues) - [ Changelog ](/docs/v3.0/changelog) - [ Upgrade guide ](/docs/v3.0/upgrade-guide) - [ Example docker-compose file ](/docs/v3.0/example-docker-compose) - Producing messages ------------------ - [ Producing messages ](/docs/v3.0/producing-messages/producing-messages) - [ Configuring your kafka producer ](/docs/v3.0/producing-messages/configuring-producers) - [ Configuring message payload ](/docs/v3.0/producing-messages/configuring-message-payload) - [ Custom serializers ](/docs/v3.0/producing-messages/custom-serializers) - [ Publishing to kafka ](/docs/v3.0/producing-messages/publishing-to-kafka) - Consuming messages ------------------ - [ Creating a kafka consumer ](/docs/v3.0/consuming-messages/creating-consumer) - [ Subscribing to kafka topics ](/docs/v3.0/consuming-messages/subscribing-to-kafka-topics) - [ Using regex to subscribe to kafka topics ](/docs/v3.0/consuming-messages/using-regex-to-subscribe-to-kafka-topics) - [ Assigning consumers to a topic partition ](/docs/v3.0/consuming-messages/assigning-partitions) - [ Consuming messages from specific offsets ](/docs/v3.0/consuming-messages/consuming-from-specific-offsets) - [ Consumer groups ](/docs/v3.0/consuming-messages/consumer-groups) - [ Partition Discovery and Dynamic Assignment ](/docs/v3.0/consuming-messages/partition-discovery) - [ Message handlers ](/docs/v3.0/consuming-messages/message-handlers) - [ Configuring consumer options ](/docs/v3.0/consuming-messages/configuring-consumer-options) - [ Handling failed messages ](/docs/v3.0/consuming-messages/handling-failed-messages) - [ Custom deserializers ](/docs/v3.0/consuming-messages/custom-deserializers) - [ Consuming messages ](/docs/v3.0/consuming-messages/consuming-messages) - [ Pausing partitions ](/docs/v3.0/consuming-messages/pausing-partitions) - [ Consumer classes ](/docs/v3.0/consuming-messages/class-structure) - [ Using consumers with Laravel Telescope ](/docs/v3.0/consuming-messages/laravel-telescope) - Advanced usage -------------- - [ Connections ](/docs/v3.0/advanced-usage/connections) - [ Replacing the default serializer/deserializer ](/docs/v3.0/advanced-usage/replacing-default-serializer) - [ Graceful shutdown ](/docs/v3.0/advanced-usage/graceful-shutdown) - [ Running consumers in production ](/docs/v3.0/advanced-usage/running-consumers-in-production) - [ SASL Authentication ](/docs/v3.0/advanced-usage/sasl-authentication) - [ Custom Committers ](/docs/v3.0/advanced-usage/custom-committers) - [ Manual Commit ](/docs/v3.0/advanced-usage/manual-commit) - [ Middlewares ](/docs/v3.0/advanced-usage/middlewares) - [ Stop consumer when there are no messages left ](/docs/v3.0/advanced-usage/stop-consumer-after-last-message) - [ Stop consumer on demand ](/docs/v3.0/advanced-usage/stopping-a-consumer) - [ Writing custom loggers ](/docs/v3.0/advanced-usage/custom-loggers) - [ Before and after callbacks ](/docs/v3.0/advanced-usage/before-callbacks) - [ Setting global configurations ](/docs/v3.0/advanced-usage/setting-global-configuration) - [ Sending multiple messages with the same producer ](/docs/v3.0/advanced-usage/sending-multiple-messages-with-the-same-producer) - [ Events ](/docs/v3.0/advanced-usage/events) - [ Consumer lag ](/docs/v3.0/advanced-usage/consumer-lag) - Testing ------- - [ Kafka fake ](/docs/v3.0/testing/fake) - [ Assert Published ](/docs/v3.0/testing/assert-published) - [ Assert published On ](/docs/v3.0/testing/assert-published-on) - [ Assert not published ](/docs/v3.0/testing/assert-not-published) - [ Assert nothing published ](/docs/v3.0/testing/assert-nothing-published) - [ Assert published times ](/docs/v3.0/testing/assert-published-times) - [ Assert published on times ](/docs/v3.0/testing/assert-published-on-times) - [ Mocking your kafka consumer ](/docs/v3.0/testing/mocking-your-kafka-consumer) Writing custom loggers ======================== Consumers log the errors that happen while consuming messages, such as failed messages and commit errors. By default, they are written to the standard output, as JSON. You can replace the logger with your own implementation, to log to a different storage, or to redact information from the logs. Sponsorship Support Laravel Kafka by sponsoring me! Laravel Kafka is free and Open Source software, built to empower developers like you. Your support helps maintain and enhance the project. If you find it valuable, please consider sponsoring me on GitHub. Every contribution makes a difference and keeps the development going strong! Thank you! [ Become a Sponsor ](https://github.com/sponsors/mateusjunges) Want to hide this message? Sponsor at any tier of $10/month or more! This can be useful for organizations that need to comply with data privacy regulations, such as the General Data Protection Regulation (GDPR). For example, if an exception occurs and gets logged, it might contain personally identifiable information (PII). A custom logger can redact this information before it gets written to the log. A logger is any class that implements the `\Junges\Kafka\Contracts\Logger` interface, which requires an `error` method receiving the Kafka message, the exception, and a prefix describing where the error happened. After creating your logger, [ bind it in the service container ](https://laravel.com/docs/container#binding-basics), in the `register` method of a service provider: ``` $this->app->singleton(\Junges\Kafka\Contracts\Logger::class, MyCustomLogger::class); ``` Previous [ Stop consumer on demand ](https://laravelkafka.com/docs/v3.0/advanced-usage/stopping-a-consumer) Next [ Before and after callbacks ](https://laravelkafka.com/docs/v3.0/advanced-usage/before-callbacks) Sponsors [ version="1.0" encoding="UTF-8"? EasyCal ](https://easycal.app/) [ Search ⌘ K ](https://typesense.org/)