feat: 테스트용 레코드 클래스와 직렬화, 역직렬화 클래스

src/main/java/com/sangdol/consumer/domain/TestRecord.java

@@ -0,0 +1,8 @@
+package com.sangdol.consumer.domain;
+
+public record TestRecord(
+	Integer userId,
+	String topic,
+	String timeStamp
+) {
+}

src/main/java/com/sangdol/consumer/infrastructure/kafka/common/serialize/JsonObjectMapper.java

@@ -0,0 +1,50 @@
+package com.sangdol.consumer.infrastructure.kafka.common.serialize;
+
+import org.springframework.stereotype.Component;
+
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+@Component
+public class JsonObjectMapper {
+
+	private final ObjectMapper objectMapper;
+
+	public JsonObjectMapper() {
+		this.objectMapper = new ObjectMapper()
+			.registerModule(new JavaTimeModule())
+			.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+	}
+
+	public <T> T deserialize(String json, Class<T> clazz) {
+		try {
+			return objectMapper.readValue(json, clazz);
+		} catch (Exception e) {
+			log.info("[JsonObjectMapper] Exception Occurred while deserializing data={} to class = {}", json, clazz, e);
+			return null;
+		}
+	}
+
+	public <T> T deserialize(Object object, Class<T> clazz) {
+		try {
+			return objectMapper.convertValue(object, clazz);
+		} catch (Exception e) {
+			log.info("[JsonObjectMapper] Exception Occurred while deserializing data={} to class = {}", object, clazz,
+				e);
+			return null;
+		}
+	}
+
+	public String serialize(Object object) {
+		try {
+			return objectMapper.writeValueAsString(object);
+		} catch (Exception e) {
+			log.info("[JsonObjectMapper] Exception Occurred while serializing object = {}", object, e);
+			return null;
+		}
+	}
+}

src/main/java/com/sangdol/consumer/infrastructure/kafka/common/serialize/TestRecordDeserializer.java

@@ -0,0 +1,26 @@
+package com.sangdol.consumer.infrastructure.kafka.common.serialize;
+
+import java.nio.charset.StandardCharsets;
+
+import org.apache.kafka.common.serialization.Deserializer;
+
+import com.sangdol.consumer.domain.TestRecord;
+
+public class TestRecordDeserializer implements Deserializer<TestRecord> {
+
+	private final JsonObjectMapper jsonObjectMapper;
+
+	public TestRecordDeserializer() {
+		this.jsonObjectMapper = new JsonObjectMapper();
+	}
+
+	// null-return이 아닌 DLT 전송 등의 예외 처리 필요.
+	@Override
+	public TestRecord deserialize(String topic, byte[] data) {
+		if (data == null) {
+			return null;
+		}
+
+		return jsonObjectMapper.deserialize(new String(data, StandardCharsets.UTF_8), TestRecord.class);
+	}
+}

src/main/java/com/sangdol/consumer/infrastructure/kafka/common/serialize/TestRecordSerializer.java

@@ -0,0 +1,25 @@
+package com.sangdol.consumer.infrastructure.kafka.common.serialize;
+
+import java.nio.charset.StandardCharsets;
+
+import org.apache.kafka.common.serialization.Serializer;
+
+import com.sangdol.consumer.domain.TestRecord;
+
+public class TestRecordSerializer implements Serializer<TestRecord> {
+
+	private final JsonObjectMapper jsonObjectMapper;
+
+	public TestRecordSerializer() {
+		this.jsonObjectMapper = new JsonObjectMapper();
+	}
+
+	@Override
+	public byte[] serialize(String topic, TestRecord data) {
+		if (data == null) {
+			return null;
+		}
+
+		return jsonObjectMapper.serialize(data).getBytes(StandardCharsets.UTF_8);
+	}
+}