feat: add AIS target Kafka producer pipeline

pom.xml

@@ -111,6 +111,12 @@
             <version>2.3.0</version>
         </dependency>
 
+        <!-- Kafka -->
+        <dependency>
+            <groupId>org.springframework.kafka</groupId>
+            <artifactId>spring-kafka</artifactId>
+        </dependency>
+
         <!-- Caffeine Cache -->
         <dependency>
             <groupId>com.github.ben-manes.caffeine</groupId>

src/main/java/com/snp/batch/jobs/aistarget/batch/writer/AisTargetDataWriter.java

@@ -4,6 +4,7 @@ import com.snp.batch.common.batch.writer.BaseWriter;
 import com.snp.batch.jobs.aistarget.batch.entity.AisTargetEntity;
 import com.snp.batch.jobs.aistarget.cache.AisTargetCacheManager;
 import com.snp.batch.jobs.aistarget.classifier.AisClassTypeClassifier;
+import com.snp.batch.jobs.aistarget.kafka.AisTargetKafkaProducer;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
@@ -15,10 +16,11 @@ import java.util.List;
  * 동작:
  * 1. ClassType 분류 (Core20 캐시 기반 A/B 분류)
  * 2. 캐시에 최신 위치 정보 업데이트 (classType, core20Mmsi 포함)
+ * 3. Kafka 토픽으로 AIS Target 정보 전송 (서브청크 분할)
  *
  * 참고:
  * - DB 저장은 별도 Job(aisTargetDbSyncJob)에서 15분 주기로 수행
- * - 이 Writer는 캐시 업데이트만 담당
+ * - Kafka 전송 실패는 기본적으로 로그만 남기고 다음 처리 계속
  */
 @Slf4j
 @Component
@@ -26,13 +28,16 @@ public class AisTargetDataWriter extends BaseWriter<AisTargetEntity> {
 
     private final AisTargetCacheManager cacheManager;
     private final AisClassTypeClassifier classTypeClassifier;
+    private final AisTargetKafkaProducer kafkaProducer;
 
     public AisTargetDataWriter(
             AisTargetCacheManager cacheManager,
-            AisClassTypeClassifier classTypeClassifier) {
+            AisClassTypeClassifier classTypeClassifier,
+            AisTargetKafkaProducer kafkaProducer) {
         super("AisTarget");
         this.cacheManager = cacheManager;
         this.classTypeClassifier = classTypeClassifier;
+        this.kafkaProducer = kafkaProducer;
     }
 
     @Override
@@ -48,5 +53,19 @@ public class AisTargetDataWriter extends BaseWriter<AisTargetEntity> {
 
         log.debug("AIS Target 캐시 업데이트 완료: {} 건 (캐시 크기: {})",
                 items.size(), cacheManager.size());
+
+        // 3. Kafka 전송 (설정 enabled=true 인 경우)
+        if (!kafkaProducer.isEnabled()) {
+            log.debug("AIS Kafka 전송 비활성화 - topic 전송 스킵");
+            return;
+        }
+
+        AisTargetKafkaProducer.PublishSummary summary = kafkaProducer.publish(items);
+        log.info("AIS Kafka 전송 완료 - topic: {}, 요청: {}, 성공: {}, 실패: {}, 스킵: {}",
+                kafkaProducer.getTopic(),
+                summary.getRequestedCount(),
+                summary.getSuccessCount(),
+                summary.getFailedCount(),
+                summary.getSkippedCount());
     }
 }

src/main/java/com/snp/batch/jobs/aistarget/kafka/AisTargetKafkaMessage.java

@@ -0,0 +1,55 @@
+package com.snp.batch.jobs.aistarget.kafka;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.snp.batch.jobs.aistarget.batch.entity.AisTargetEntity;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.OffsetDateTime;
+import java.time.ZoneOffset;
+
+/**
+ * AIS Target Kafka 메시지 스키마
+ */
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class AisTargetKafkaMessage {
+
+    /**
+     * 이벤트 고유 식별자
+     * - 형식: {mmsi}_{messageTimestamp}
+     */
+    private String eventId;
+
+    /**
+     * Kafka key와 동일한 선박 식별자
+     */
+    private String key;
+
+    /**
+     * Kafka 발행 시각(UTC)
+     */
+    private OffsetDateTime publishedAt;
+
+    /**
+     * AIS 원본/가공 데이터 전체 필드
+     */
+    private AisTargetEntity payload;
+
+    public static AisTargetKafkaMessage from(AisTargetEntity entity) {
+        String key = entity.getMmsi() != null ? String.valueOf(entity.getMmsi()) : null;
+        String messageTs = entity.getMessageTimestamp() != null ? entity.getMessageTimestamp().toString() : "null";
+
+        return AisTargetKafkaMessage.builder()
+                .eventId(key + "_" + messageTs)
+                .key(key)
+                .publishedAt(OffsetDateTime.now(ZoneOffset.UTC))
+                .payload(entity)
+                .build();
+    }
+}

src/main/java/com/snp/batch/jobs/aistarget/kafka/AisTargetKafkaProducer.java

@@ -0,0 +1,207 @@
+package com.snp.batch.jobs.aistarget.kafka;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.snp.batch.jobs.aistarget.batch.entity.AisTargetEntity;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.stereotype.Component;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * AIS Target Kafka Producer
+ *
+ * 정책:
+ * - key: MMSI
+ * - value: AisTargetKafkaMessage(JSON)
+ * - 실패 시 기본적으로 로그만 남기고 계속 진행 (failOnSendError=false)
+ */
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class AisTargetKafkaProducer {
+
+    private final KafkaTemplate<String, String> kafkaTemplate;
+    private final ObjectMapper objectMapper;
+    private final AisTargetKafkaProperties kafkaProperties;
+
+    public boolean isEnabled() {
+        return kafkaProperties.isEnabled();
+    }
+
+    public String getTopic() {
+        return kafkaProperties.getTopic();
+    }
+
+    /**
+     * 수집 청크 데이터를 Kafka 전송용 서브청크로 분할해 전송
+     */
+    public PublishSummary publish(List<AisTargetEntity> entities) {
+        if (!isEnabled()) {
+            return PublishSummary.disabled();
+        }
+
+        if (entities == null || entities.isEmpty()) {
+            return PublishSummary.empty();
+        }
+
+        int subChunkSize = Math.max(1, kafkaProperties.getSendChunkSize());
+        PublishSummary totalSummary = PublishSummary.empty();
+
+        for (int from = 0; from < entities.size(); from += subChunkSize) {
+            int to = Math.min(from + subChunkSize, entities.size());
+            List<AisTargetEntity> subChunk = entities.subList(from, to);
+
+            PublishSummary chunkSummary = publishSubChunk(subChunk);
+            totalSummary.merge(chunkSummary);
+
+            log.info("AIS Kafka 서브청크 전송 완료 - topic: {}, 범위: {}~{}, 요청: {}, 성공: {}, 실패: {}, 스킵: {}",
+                    getTopic(), from, to - 1,
+                    chunkSummary.getRequestedCount(),
+                    chunkSummary.getSuccessCount(),
+                    chunkSummary.getFailedCount(),
+                    chunkSummary.getSkippedCount());
+        }
+
+        if (kafkaProperties.isFailOnSendError() && totalSummary.getFailedCount() > 0) {
+            throw new IllegalStateException("AIS Kafka 전송 실패 건수: " + totalSummary.getFailedCount());
+        }
+
+        return totalSummary;
+    }
+
+    private PublishSummary publishSubChunk(List<AisTargetEntity> subChunk) {
+        AtomicInteger successCount = new AtomicInteger(0);
+        AtomicInteger failedCount = new AtomicInteger(0);
+        AtomicInteger skippedCount = new AtomicInteger(0);
+        AtomicInteger sampledErrorLogs = new AtomicInteger(0);
+        List<CompletableFuture<Void>> futures = new ArrayList<>(subChunk.size());
+
+        for (AisTargetEntity entity : subChunk) {
+            if (!isValid(entity)) {
+                skippedCount.incrementAndGet();
+                continue;
+            }
+
+            try {
+                String key = String.valueOf(entity.getMmsi());
+                String payload = objectMapper.writeValueAsString(AisTargetKafkaMessage.from(entity));
+
+                CompletableFuture<Void> trackedFuture = kafkaTemplate.send(getTopic(), key, payload)
+                        .handle((result, ex) -> {
+                            if (ex != null) {
+                                failedCount.incrementAndGet();
+                                logSendError(sampledErrorLogs,
+                                        "AIS Kafka 전송 실패 - topic: " + getTopic()
+                                                + ", key: " + key
+                                                + ", messageTimestamp: " + entity.getMessageTimestamp()
+                                                + ", error: " + ex.getMessage());
+                            } else {
+                                successCount.incrementAndGet();
+                            }
+                            return null;
+                        });
+
+                futures.add(trackedFuture);
+
+            } catch (JsonProcessingException e) {
+                failedCount.incrementAndGet();
+                logSendError(sampledErrorLogs,
+                        "AIS Kafka 메시지 직렬화 실패 - mmsi: " + entity.getMmsi()
+                                + ", messageTimestamp: " + entity.getMessageTimestamp()
+                                + ", error: " + e.getMessage());
+            } catch (Exception e) {
+                failedCount.incrementAndGet();
+                logSendError(sampledErrorLogs,
+                        "AIS Kafka 전송 요청 실패 - mmsi: " + entity.getMmsi()
+                                + ", messageTimestamp: " + entity.getMessageTimestamp()
+                                + ", error: " + e.getMessage());
+            }
+        }
+
+        if (!futures.isEmpty()) {
+            CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
+            kafkaTemplate.flush();
+        }
+
+        return PublishSummary.of(
+                false,
+                subChunk.size(),
+                successCount.get(),
+                failedCount.get(),
+                skippedCount.get()
+        );
+    }
+
+    private boolean isValid(AisTargetEntity entity) {
+        return entity != null
+                && entity.getMmsi() != null
+                && entity.getMessageTimestamp() != null;
+    }
+
+    private void logSendError(AtomicInteger sampledErrorLogs, String message) {
+        int current = sampledErrorLogs.incrementAndGet();
+        if (current <= 5) {
+            log.error(message);
+            return;
+        }
+
+        if (current == 6) {
+            log.error("AIS Kafka 전송 오류 로그가 많아 이후 상세 로그는 생략합니다.");
+        }
+    }
+
+    @Getter
+    public static class PublishSummary {
+        private final boolean disabled;
+        private int requestedCount;
+        private int successCount;
+        private int failedCount;
+        private int skippedCount;
+
+        private PublishSummary(
+                boolean disabled,
+                int requestedCount,
+                int successCount,
+                int failedCount,
+                int skippedCount
+        ) {
+            this.disabled = disabled;
+            this.requestedCount = requestedCount;
+            this.successCount = successCount;
+            this.failedCount = failedCount;
+            this.skippedCount = skippedCount;
+        }
+
+        public static PublishSummary disabled() {
+            return of(true, 0, 0, 0, 0);
+        }
+
+        public static PublishSummary empty() {
+            return of(false, 0, 0, 0, 0);
+        }
+
+        public static PublishSummary of(
+                boolean disabled,
+                int requestedCount,
+                int successCount,
+                int failedCount,
+                int skippedCount
+        ) {
+            return new PublishSummary(disabled, requestedCount, successCount, failedCount, skippedCount);
+        }
+
+        public void merge(PublishSummary other) {
+            this.requestedCount += other.requestedCount;
+            this.successCount += other.successCount;
+            this.failedCount += other.failedCount;
+            this.skippedCount += other.skippedCount;
+        }
+    }
+}

src/main/java/com/snp/batch/jobs/aistarget/kafka/AisTargetKafkaProperties.java

@@ -0,0 +1,36 @@
+package com.snp.batch.jobs.aistarget.kafka;
+
+import lombok.Getter;
+import lombok.Setter;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * AIS Target Kafka 전송 설정
+ */
+@Getter
+@Setter
+@ConfigurationProperties(prefix = "app.batch.ais-target.kafka")
+public class AisTargetKafkaProperties {
+
+    /**
+     * Kafka 전송 활성화 여부
+     */
+    private boolean enabled = true;
+
+    /**
+     * 전송 대상 토픽
+     */
+    private String topic = "tp_SNP_AIS_Signal";
+
+    /**
+     * Kafka 전송 서브청크 크기
+     * 수집 청크(예: 5만)와 별도로 전송 배치를 분할한다.
+     */
+    private int sendChunkSize = 5000;
+
+    /**
+     * 전송 실패 시 Step 실패 여부
+     * false면 실패 로그만 남기고 다음 처리를 계속한다.
+     */
+    private boolean failOnSendError = false;
+}

src/main/resources/application-dev.yml

@@ -53,6 +53,23 @@ spring:
       org.quartz.jobStore.isClustered: false
       org.quartz.jobStore.misfireThreshold: 60000
 
+  # Kafka Configuration (DEV)
+  kafka:
+    bootstrap-servers: localhost:9092  # TODO: DEV Kafka Broker IP/PORT 설정
+    producer:
+      key-serializer: org.apache.kafka.common.serialization.StringSerializer
+      value-serializer: org.apache.kafka.common.serialization.StringSerializer
+      acks: all
+      retries: 3
+      properties:
+        enable.idempotence: true
+        compression.type: snappy
+        linger.ms: 20
+        batch.size: 65536
+        max.block.ms: 3000
+        request.timeout.ms: 5000
+        delivery.timeout.ms: 10000
+
 # Server Configuration
 server:
   port: 8041
@@ -99,6 +116,11 @@ app:
       chunk-size: 50000            # 배치 청크 크기
       schedule:
         cron: "15 * * * * ?"      # 매 분 15초 실행
+      kafka:
+        enabled: true
+        topic: tp_SNP_AIS_Signal
+        send-chunk-size: 5000
+        fail-on-send-error: false
     # AIS Target 캐시 설정
     ais-target-cache:
       ttl-minutes: 120            # 캐시 TTL (분) - 2시간

src/main/resources/application-prod.yml

@@ -53,6 +53,23 @@ spring:
       org.quartz.jobStore.isClustered: false
       org.quartz.jobStore.misfireThreshold: 60000
 
+  # Kafka Configuration (PROD)
+  kafka:
+    bootstrap-servers: localhost:9092  # TODO: PROD Kafka Broker IP/PORT 설정
+    producer:
+      key-serializer: org.apache.kafka.common.serialization.StringSerializer
+      value-serializer: org.apache.kafka.common.serialization.StringSerializer
+      acks: all
+      retries: 3
+      properties:
+        enable.idempotence: true
+        compression.type: snappy
+        linger.ms: 20
+        batch.size: 65536
+        max.block.ms: 3000
+        request.timeout.ms: 5000
+        delivery.timeout.ms: 10000
+
 # Server Configuration
 server:
   port: 8041
@@ -101,6 +118,11 @@ app:
       chunk-size: 50000            # 배치 청크 크기
       schedule:
         cron: "15 * * * * ?"      # 매 분 15초 실행
+      kafka:
+        enabled: true
+        topic: tp_SNP_AIS_Signal
+        send-chunk-size: 5000
+        fail-on-send-error: false
     # AIS Target 캐시 설정
     ais-target-cache:
       ttl-minutes: 120            # 캐시 TTL (분) - 2시간

src/main/resources/application.yml

@@ -53,6 +53,23 @@ spring:
       org.quartz.jobStore.isClustered: false
       org.quartz.jobStore.misfireThreshold: 60000
 
+  # Kafka Configuration
+  kafka:
+    bootstrap-servers: localhost:9092
+    producer:
+      key-serializer: org.apache.kafka.common.serialization.StringSerializer
+      value-serializer: org.apache.kafka.common.serialization.StringSerializer
+      acks: all
+      retries: 3
+      properties:
+        enable.idempotence: true
+        compression.type: snappy
+        linger.ms: 20
+        batch.size: 65536
+        max.block.ms: 3000
+        request.timeout.ms: 5000
+        delivery.timeout.ms: 10000
+
 # Server Configuration
 server:
   port: 8041
@@ -151,6 +168,11 @@ app:
       chunk-size: 50000            # 배치 청크 크기
       schedule:
         cron: "15 * * * * ?"      # 매 분 15초 실행
+      kafka:
+        enabled: true
+        topic: tp_SNP_AIS_Signal
+        send-chunk-size: 5000
+        fail-on-send-error: false
 
     # AIS Target DB Sync 배치 설정 (캐시 → DB 저장)
     ais-target-db-sync: