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UPGRADE.md

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Upgrade to 1.0

Avro encoding / decoding

Has been removed as a fixed dependency. If you rely on it you need to run
the following in your project:

composer require flix-tech/avro-serde-php "~1.4"

Producer improvements

Producer used to poll all events after produce, now per default only one
non-blocking poll call will be triggered after produce.
This improvement was made so higher throughput can be achieved if needed.
This affects the following classes:

  • KafkaProducer
    • Added syncProduce - waits indefinitely for an event to be polled
    • Added poll - gives you the ability to poll, especially useful if you disable auto poll for produce
    • Added pollUntilQueueSizeReached - polls until the poll queue has reached a certain size
    • Changed produce, changed behaviour (see above), has new optional parameters $autoPoll and $pollTimeoutMs

To achieve the previous default behaviour change (e.g. suited for REST API applications which trigger a message on call and are not using long running processes like Swoole):

$producer->produce($message);

to

$producer->produce($message, false);
$producer->pollUntilQueueSizeReached(); // defaults should work fine

Possibility to decode message later (Consumer)

Consume has now a second optional parameter consume(int $timeoutMs = 10000, bool $autoDecode = true).
If set to false, you must decode your message later using $consumer->decodeMessage($message).
For high throughput, you don't need to decode immediately, some decisions can be made
relying on the message headers alone. This helps to leverage that.

Remove timout from builder / configuration, added timeout parameter to functions (Consumer / Producer)

You were able to set timeout in the builder, but some methods
still had timeout as parameter. To avoid confusion, every method
needing a timeout, will now have it as a parameter with a sane default value.
This affects the following classes:

  • KafkaConfiguration
    • Removed timeout parameter from __construct()
    • Removed getTimeout()
  • KafkaConsumerBuilder / KafkaConsumerBuilderInterface
    • Removed withTimeout()
  • KafkaProducerBuilder / KafkaProducerBuilderInterface
    • Removed withPollTimeout()
  • KafkaHighLevelConsumer / KafkaLowLevelConsumer / KafkaConsumerInterface
    • Added $timeoutMs to consume(), default is 10s
    • Added $timeoutMs to getMetadataForTopic(), default is 10s
  • KafkaProducer / KafkaProducerInterface
    • Added pollTimeoutMs to produce(), default is 10s
    • Added $timeoutMs to getMetadataForTopic(), default is 10s

Possibility to avro encode / decode both key and body of a message

The previous default behaviour was to only encode the body of a message.
Now you are also able to encode / decode message keys.
This affects the following classes:

  • AvroSchemaRegistry
    • Removed addSchemaMappingForTopic
    • Removed getSchemaForTopic
    • Added addBodySchemaMappingForTopic
    • Added addKeySchemaMappingForTopic
    • Added getBodySchemaForTopic
    • Added getKeySchemaForTopic
    • Behaviour change: Trying to get a schema for which no mapping was registered will throw AvroSchemaRegistryException
    • getTopicSchemaMapping will still return an array with mappings but with an additional first key body or key for the type of the schema
  • KafkaMessageInterface
    • type of key is now mixed

Default error callback

The default error callback now only throws exceptions for fatal errors.
Other errors will be retried by librdkafka and are only informational.