Upgrade to rdkafka v4

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
           php-version: 7.3
           coverage: none
           tools: pecl
-          extensions: json, mbstring, rdkafka-3.1.2
+          extensions: json, mbstring, rdkafka
 
       - name: Get Composer Cache Directory
         id: composer-cache
@@ -68,7 +68,7 @@ jobs:
           php-version: 7.3
           coverage: none
           tools: pecl
-          extensions: json, mbstring, rdkafka-3.1.2
+          extensions: json, mbstring, rdkafka
 
       - name: Get Composer Cache Directory
         id: composer-cache
@@ -110,7 +110,7 @@ jobs:
           php-version: 7.3
           coverage: pcov
           tools: pecl
-          extensions: json, mbstring, rdkafka-3.1.2
+          extensions: json, mbstring, rdkafka
 
       - name: Get Composer Cache Directory
         id: composer-cache
@@ -140,7 +140,7 @@ jobs:
     runs-on: ubuntu-18.04
     strategy:
       matrix:
-        php: [7.3]
+        php: [7.3, 7.4]
         env: [
           'DEPENDENCIES=--prefer-lowest',
           '',
@@ -164,7 +164,7 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: none
           tools: pecl
-          extensions: json, mbstring, rdkafka-3.1.2
+          extensions: json, mbstring, rdkafka
 
       - name: Get Composer Cache Directory
         id: composer-cache

.github/workflows/infection.yml

@@ -30,7 +30,7 @@ jobs:
           php-version: 7.3
           coverage: pcov
           tools: pecl
-          extensions: json, mbstring, rdkafka-3.1.2
+          extensions: json, mbstring, rdkafka
 
       - name: Install Dependencies
         run: composer install --prefer-dist --no-progress --no-suggest

.github/workflows/shepherd.yml

@@ -27,7 +27,7 @@ jobs:
           php-version: 7.3
           coverage: none
           tools: pecl
-          extensions: json, mbstring, rdkafka-3.1.2
+          extensions: json, mbstring, rdkafka
 
       - name: Install dependencies
         run: composer install --prefer-dist --no-progress --no-suggest

composer.json

@@ -15,22 +15,21 @@
     "require": {
         "php": "^7.2",
         "ext-pcntl": "*",
-        "ext-rdkafka": "*",
-        "psr/log": "^1.1",
-        "symfony/polyfill-php73": "^1.11"
+        "ext-rdkafka": "^4",
+        "psr/log": "^1.1"
     },
     "require-dev": {
         "doctrine/coding-standard": "^7.0",
         "infection/infection": "^0.16.3",
-        "kwn/php-rdkafka-stubs": "^1.0",
+        "kwn/php-rdkafka-stubs": "^2.0",
         "phpstan/extension-installer": "^1.0",
         "phpstan/phpstan": "0.12.25",
         "phpstan/phpstan-phpunit": "0.12.8",
         "phpstan/phpstan-strict-rules": "0.12.2",
         "phpunit/phpunit": "^9.1",
         "psalm/plugin-phpunit": "^0.10.0",
         "simpod/php-coveralls-mirror": "^3.0",
-        "vimeo/psalm": "dev-master#47cf69d as 3.11.4"
+        "vimeo/psalm": "^3.12"
     },
     "suggest": {
         "kwn/php-rdkafka-stubs": "Support and autocompletion for RDKafka in IDE | require as dev dependency"

src/Clients/Consumer/KafkaConsumer.php

@@ -44,7 +44,7 @@ function (RdKafkaConsumer $kafka, int $err, string $reason) : void {
             }
         );
 
-        $rebalanceCb =
+        $rebalanceCallback =
             /** @param array<string, TopicPartition>|null $partitions */
             function (RdKafkaConsumer $kafka, int $err, ?array $partitions = null) : void {
                 switch ($err) {
@@ -77,7 +77,7 @@ static function (TopicPartition $partition) : string {
                         $kafka->assign();
                 }
             };
-        $config->getConf()->setRebalanceCb($rebalanceCb);
+        $config->getConf()->setRebalanceCb($rebalanceCallback);
 
         parent::__construct($config->getConf());
     }

src/Clients/Producer/KafkaProducer.php

@@ -4,30 +4,78 @@
 
 namespace SimPod\Kafka\Clients\Producer;
 
+use InvalidArgumentException;
 use RdKafka\Producer;
+use RdKafka\ProducerTopic;
+use RuntimeException;
+use function sprintf;
 use const RD_KAFKA_PARTITION_UA;
+use const RD_KAFKA_RESP_ERR_NO_ERROR;
 
 class KafkaProducer extends Producer
 {
     private const RD_KAFKA_MSG_F_COPY = 0;
 
-    public function __construct(ProducerConfig $config)
+    /** @var callable(KafkaProducer):void|null */
+    private $exitCallback;
+
+    /** @param callable(KafkaProducer):void|null $exitCallback */
+    public function __construct(ProducerConfig $config, ?callable $exitCallback = null)
     {
+        $this->exitCallback = $exitCallback;
+
         parent::__construct($config->getConf());
     }
 
-    public function produce(ProducerRecord $record) : void
+    public function __destruct()
     {
-        $topic = $this->newTopic($record->topic);
-        /** @psalm-suppress UndefinedMethod https://github.com/vimeo/psalm/issues/3406 */
-        $topic->produce($record->partition ?? RD_KAFKA_PARTITION_UA, self::RD_KAFKA_MSG_F_COPY, $record->value, $record->key);
+        if ($this->exitCallback === null) {
+            return;
+        }
+
+        ($this->exitCallback)($this);
+    }
+
+    /** @param array<string, string>|null $headers */
+    public function produce(
+        string $topicName,
+        ?int $partition,
+        string $value,
+        ?string $key = null,
+        ?array $headers = null,
+        ?int $timestampMs = null
+    ) : void {
+        if ($partition < 0) {
+            throw new InvalidArgumentException(
+                sprintf('Invalid partition: %d. Partition number should always be non-negative or null.', $partition)
+            );
+        }
+
+        /** @psalm-var ProducerTopic $topic Psalm thinks this is a Topic https://github.com/vimeo/psalm/issues/3406 */
+        $topic = $this->newTopic($topicName);
+        $topic->producev(
+            $partition ?? RD_KAFKA_PARTITION_UA,
+            self::RD_KAFKA_MSG_F_COPY,
+            $value,
+            $key,
+            $headers,
+            $timestampMs
+        );
         $this->poll(0);
     }
 
-    public function flush() : void
+    public function flushMessages(int $timeoutMs = 10000) : void
     {
-        while ($this->getOutQLen() > 0) {
-            $this->poll(1);
+        $result = null;
+        for ($flushRetries = 0; $flushRetries < 10; $flushRetries++) {
+            $result = $this->flush($timeoutMs);
+            if ($result === RD_KAFKA_RESP_ERR_NO_ERROR) {
+                break;
+            }
+        }
+
+        if ($result !== RD_KAFKA_RESP_ERR_NO_ERROR) {
+            throw new RuntimeException('Was unable to flush, messages might be lost!');
         }
     }
 }

tests/Clients/Consumer/TestProducer.php

@@ -6,7 +6,6 @@
 
 use SimPod\Kafka\Clients\Producer\KafkaProducer;
 use SimPod\Kafka\Clients\Producer\ProducerConfig;
-use SimPod\Kafka\Clients\Producer\ProducerRecord;
 use function gethostname;
 
 final class TestProducer
@@ -16,18 +15,17 @@ final class TestProducer
 
     public function __construct()
     {
-        $this->producer = new KafkaProducer($this->getConfig());
+        $this->producer = new KafkaProducer(
+            $this->getConfig(),
+            static function (KafkaProducer $producer) : void {
+                $producer->flushMessages(5000);
+            }
+        );
     }
 
     public function run(string $payload) : void
     {
-        $record = new ProducerRecord(KafkaBatchConsumerTest::TOPIC, null, $payload);
-        $this->producer->produce($record);
-    }
-
-    public function flush() : void
-    {
-        $this->producer->flush();
+        $this->producer->produce(KafkaBatchConsumerTest::TOPIC, null, $payload);
     }
 
     private function getConfig() : ProducerConfig