사용 가능 공간 조회 API 추가

src/main/java/com/kamco/cd/training/dataset/service/DatasetService.java

@@ -1,15 +1,20 @@
 package com.kamco.cd.training.dataset.service;
 
+import com.kamco.cd.training.common.exception.CustomApiException;
+import com.kamco.cd.training.common.service.FormatStorage;
 import com.kamco.cd.training.dataset.dto.DatasetDto;
 import com.kamco.cd.training.dataset.dto.DatasetObjDto;
 import com.kamco.cd.training.dataset.dto.DatasetObjDto.DatasetClass;
+import com.kamco.cd.training.dataset.dto.DatasetObjDto.DatasetStorage;
 import com.kamco.cd.training.dataset.dto.DatasetObjDto.SearchReq;
 import com.kamco.cd.training.postgres.core.DatasetCoreService;
+import java.nio.file.Path;
 import java.util.List;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.data.domain.Page;
+import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -105,4 +110,26 @@ public class DatasetService {
   public List<DatasetClass> getDatasetObjByUuid(UUID uuid, String type) {
     return datasetCoreService.findDatasetObjClassByUuid(uuid, type);
   }
+
+  /**
+   * 사용 가능 공간 조회
+   *
+   * @return
+   */
+  public DatasetStorage getUsableBytes() {
+    // 현재 실행 위치가 속한 디스크 기준
+    try {
+      FormatStorage.DiskUsage usage = FormatStorage.getDiskUsage(Path.of("."));
+      log.debug("경로 : {}", usage.path());
+      log.debug("총 저장공간 : {}", usage.totalText());
+      log.debug("남은 저장공간 : {}", usage.usableText());
+      log.debug("사용률 : {}", usage.usedPercent());
+
+      DatasetStorage datasetStorage = new DatasetStorage();
+      datasetStorage.setUsableBytes(usage.usableText());
+      return datasetStorage;
+    } catch (Exception e) {
+      throw new CustomApiException("NOT_FOUND", HttpStatus.NOT_FOUND);
+    }
+  }
 }