8000 feat: Make serializer configurable via YAML configuration by lenchester · Pull Request #1390 · php-enqueue/enqueue-dev · GitHub
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feat: Make serializer configurable via YAML configuration #1390

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feat: Make serializer configurable via YAML configuration #1390

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af27b52
feat: Make serializer configurable via YAML configuration
lenchester May 20, 2025
5559723
Add fallback to JsonSerializer in configureSerializer
lenchester May 22, 2025
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55 changes: 53 additions & 2 deletions pkg/rdkafka/RdKafkaContext.php
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Original file line number Diff line number Diff line change
Expand Up @@ -54,8 +54,7 @@ public function __construct(array $config)
$this->config = $config;
$this->kafkaConsumers = [];
$this->rdKafkaConsumers = [];

$this->setSerializer(new JsonSerializer());
$this->configureSerializer($config);
}

/**
Expand Down Expand Up @@ -180,6 +179,58 @@ public static function getLibrdKafkaVersion(): string
return "$major.$minor.$patch";
}

/**
* @return void
* JsonSerializer should be the default fallback if no serializer is specified
*/
Comment on lines +182 to +185
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No need to re-specify the return type, since it's already present in the PHP declaration.

As for the description, I'm not sure it's worthwile - but nothing against it either.

Suggested change
/**
* @return void
* JsonSerializer should be the default fallback if no serializer is specified
*/
/**
* JsonSerializer is the default fallback, if no serializer is specified.
*/

private function configureSerializer(array $config): void
{
if (!isset($config['serializer'])) {
$this->setSerializer(new JsonSerializer());

return;
}

$serializer = $config['serializer'];

if ($serializer instanceof Serializer) {
$this->setSerializer($serializer);

return;
}

$serializerClass = $this->resolveSerializerClass($serializer);

if (!class_exists($serializerClass) || !is_a($serializerClass, Serializer::class, true)) {
throw $this->createInvalidSerializerException($serializerClass);
}

$serializerOptions = $serializer['options'] ?? [];
$this->setSerializer(new $serializerClass($serializerOptions));
}

private function resolveSerializerClass(mixed $serializer): string
{
if (is_string($serializer)) {
return $serializer;
}

if (is_array($serializer) && isset($serializer['class'])) {
return $serializer['class'];
}

throw $this->createInvalidSerializerException($serializer);
}

private function createInvalidSerializerException(mixed $value): \InvalidArgumentException
{
return new \InvalidArgumentException(sprintf(
'Invalid serializer configuration. Expected "serializer" to be a string, an array with a "class" key, or a %s instance. Received %s instead.',
Serializer::class,
get_debug_type($value)
));
}

private function getConf(): Conf
{
if (null === $this->conf) {
Expand Down
28 changes: 28 additions & 0 deletions pkg/rdkafka/Tests/RdKafkaContextTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,34 @@ public function testShouldSetJsonSerializerInConstructor()
$this->assertInstanceOf(JsonSerializer::class, $context->getSerializer());
}

public function testShouldUseStringSerializerClassFromConfig()
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Consider adding unit test that checks assertSame instance when serializer object is passed. If you are able you might want to check constructor options with method call assertions.

{
$mockSerializerClass = get_class($this->createMock(Serializer::class));

$context = new RdKafkaContext([
'serializer' => $mockSerializerClass,
]);

$this->assertInstanceOf($mockSerializerClass, $context->getSerializer());
}

public function testShouldUseJsonSerializer()
{
$context = new RdKafkaContext([]);

$this->assertInstanceOf(JsonSerializer::class, $context->getSerializer());
}

public function testShouldThrowExceptionOnInvalidSerializerConfig()
{
$this->expectException(\InvalidArgumentException::class);
$this->expectExceptionMessage('Invalid serializer configuration');

new RdKafkaContext([
'serializer' => 123,
]);
}

public function testShouldAllowGetPreviouslySetSerializer()
{
$context = new RdKafkaContext([]);
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