feat: 카프카 설정값을 담는 KafkaProperties 클래스 및 ConfigurationProperties 적용을 위한 application.yml 설정

src/main/java/com/sangdol/consumer/infrastructure/kafka/common/KafkaProperties.java

@@ -0,0 +1,111 @@
+package com.sangdol.consumer.infrastructure.kafka.common;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.kafka.common.config.SslConfigs;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+@ConfigurationProperties(prefix = "kafka")
+public class KafkaProperties {
+
+	private final DeadLetterTopic deadLetterTopic;
+	private final BootStrapServers bootStrapServers;
+	private final Consumer consumer;
+	private final Producer producer;
+	private final Ssl ssl;
+
+	public record DeadLetterTopic(
+		String name
+	) {
+	}
+
+	public record BootStrapServers(
+		String runEnvironment,
+		ServerAddress docker,
+		ServerAddress local
+	) {
+		public String getAddressByProtocol(String protocol) {
+			if (runEnvironment == null || runEnvironment.isBlank()) {
+				throw new IllegalArgumentException(
+					"[KafkaProperties.BootStrapServers] runEnvironment is null or black");
+			}
+			if (runEnvironment.equalsIgnoreCase("local")) {
+				return local.getAddress(protocol);
+			}
+			if (runEnvironment.equalsIgnoreCase("docker")) {
+				return docker.getAddress(protocol);
+			}
+			throw new IllegalArgumentException(
+				"[KafkaProperties.BootStrapServers] unknown runEnvironment: " + runEnvironment);
+		}
+	}
+
+	public record Consumer(
+		String groupId,
+		String keyDeserializer,
+		String valueDeserializer,
+		String protocol,
+		boolean enableAutoCommit,
+		String autoOffsetReset,
+		Integer maxPollRecords,
+		Integer workerThreads,
+		List<String> topics
+	) {
+		public boolean isSslEnabled() {
+			return protocol.equalsIgnoreCase("ssl");
+		}
+	}
+
+	public record Producer(
+		String keySerializer,
+		String valueSerializer,
+		String acks,
+		Integer lingerMs,
+		String protocol
+	) {
+	}
+
+	public record Ssl(
+		String truststoreLocation,
+		String truststorePassword,
+		String keystoreLocation,
+		String keystorePassword,
+		String keyPassword
+	) {
+		public Map<Object, Object> toPropsMap() {
+			Map<Object, Object> props = new HashMap<>();
+			props.put(SslConfigs.SSL_TRUSTSTORE_LOCATION_CONFIG, truststoreLocation);
+			props.put(SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG, truststorePassword);
+			props.put(SslConfigs.SSL_KEYSTORE_LOCATION_CONFIG, keystoreLocation);
+			props.put(SslConfigs.SSL_KEYSTORE_PASSWORD_CONFIG, keystorePassword);
+			props.put(SslConfigs.SSL_KEY_PASSWORD_CONFIG, keyPassword);
+
+			return props;
+		}
+	}
+
+	public record ServerAddress(
+		String plainText,
+		String ssl
+	) {
+		public String getAddress(String protocol) {
+			if (protocol == null || protocol.isBlank()) {
+				throw new IllegalArgumentException("[KafkaProperties.ServerAddress] protocol is null or black");
+			}
+			if (protocol.equalsIgnoreCase("plaintext")) {
+				return plainText;
+			}
+			if (protocol.equalsIgnoreCase("ssl")) {
+				return ssl;
+			}
+			throw new IllegalArgumentException("[KafkaProperties.ServerAddress] unknown protocol: " + protocol);
+		}
+	}
+}

src/main/resources/application.yml

@@ -1,3 +1,68 @@
+server:
+  port: 8080
+
 spring:
   application:
     name: consumer
+
+logging:
+  level:
+    org.study.consumerssl.infrastructure.kafka.consumer: INFO
+    org.apache.kafka.common.network: INFO
+
+management:
+  info:
+    java:
+      enabled: true
+    os:
+      enabled: true
+  endpoints:
+    web:
+      exposure:
+        include: "health,info,prometheus"
+  endpoint:
+    health:
+      show-details: always
+
+kafka:
+  dead-letter-topic:
+    name: "test-dlt"
+
+  bootstrap-servers:
+    run-environment: ${RUN_ENVIRONMENT:local}
+    local:
+      plain-text: "localhost:29092,localhost:39092,localhost:49092"
+      ssl: "localhost:29093,localhost:39093,localhost:49093"
+    docker:
+      plain-text: "broker-1:19092,broker-2:19092,broker-3:19092"
+      ssl: "broker-1:19093,broker-2:19093,broker-3:19093"
+
+  producer:
+    keySerializer: "org.apache.kafka.common.serialization.StringSerializer"
+    valueSerializer: "org.apache.kafka.common.serialization.StringSerializer"
+    acks: "all"
+    linger-ms: 10
+    protocol: "plaintext"
+
+  consumer:
+    group-id: "sangdol-group"
+    keyDeserializer: "org.apache.kafka.common.serialization.StringDeserializer"
+    valueDeserializer: "com.sangdol.consumer.infrastructure.kafka.common.serialize.TestRecordDeserializer"
+    protocol: ${CONSUMER_PROTOCOL:plaintext}
+    enable-auto-commit: false
+    auto-offset-reset: "earliest"
+    max-poll-records: 500
+    worker-threads: 3
+    topics:
+      - "topic-0"
+      - "topic-1"
+      - "topic-2"
+
+  ssl:
+    truststore-location: ssl/kafka.broker.truststore.jks
+    truststore-password: abcd1234
+    keystore-location: ssl/kafka.broker.keystore.jks
+    keystore-password: abcd1234
+    key-password: abcd1234
+
+