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laravel-pubsub

A Pub-Sub abstraction for Laravel. forked from Superbalist/laravel-pubsub

This package is a wrapper bridging php-pubsub into Laravel.

For Laravel 4 support, use the package https://github.com/Superbalist/laravel4-pubsub

Please note that Laravel 5.3 is only supported up until version 2.0.2.

2.0.3+ supports Laravel 5.4 and up moving forward.

The following adapters are supported:

• Local
• /dev/null
• Redis
• Kafka (see separate installation instructions below)
• Google Cloud
• HTTP

Installation

Register the service provider in app.php

Register the facade in app.php

The package has a default configuration which uses the following environment variables.

If the KAFKA_SECURITY_PROTOCOL is set to either "SASL_SSL" or "SASL_PLAINTEXT", the credentials stored in KAFKA_SASL_USERNAME & KAFKA_SASL_PASSWORD will be used to authenticate with the kafka server / cluster.

To customize the configuration file, publish the package configuration using Artisan.

You can then edit the generated config at app/config/pubsub.php.

Kafka Adapter Installation

Please note that whilst the package is bundled with support for the php-pubsub-kafka adapter, the adapter is not included by default.

This is because the KafkaPubSubAdapter has an external dependency on the librdkafka c library and the php-rdkafka PECL extension.

If you plan on using this adapter, you will need to install these dependencies by following these installation instructions.

You can then include the adapter using:

Usage

Creating a Subscriber

The package includes a helper command php artisan make:subscriber MyExampleSubscriber to stub new subscriber command classes.

A lot of pub-sub adapters will contain blocking subscribe() calls, so these commands are best run as daemons running as a supervisor process.

This generator command will create the file app/Console/Commands/MyExampleSubscriber.php which will contain:

Kafka Subscribers

For subscribers which use the php-pubsub-kafka adapter, you'll likely want to change the consumer_group_id per subscriber.

To do this, you need to use the PubSubConnectionFactory to create a new connection per subscriber. This is because the consumer_group_id cannot be changed once a connection is created.

Here is an example of how you can do this:

Adding a Custom Driver

Please see the php-pubsub documentation Writing an Adapter.

To include your custom driver, you can call the extend() function.