하드링크 수정

src/main/java/com/kamco/cd/training/train/service/TmpDatasetService.java

@@ -21,186 +21,68 @@ public class TmpDatasetService {
   private String trainBaseDir;
 
   /**
-   * train, val, test 폴더별로 link
-   *
-   * @param uid 임시폴더 uuid
-   * @param type train, val, test
-   * @param links tif pull path
-   * @throws IOException
-   */
-  public void buildTmpDatasetHardlink(String uid, String type, List<ModelTrainLinkDto> links)
-      throws IOException {
-
-    if (links == null || links.isEmpty()) {
-      throw new IOException("links is empty");
-    }
-
-    Path tmp = Path.of(trainBaseDir, "tmp", uid);
-
-    long hardlinksMade = 0;
-
-    for (ModelTrainLinkDto dto : links) {
-
-      if (type == null) {
-        log.warn("SKIP - trainType null: {}", dto);
-        continue;
-      }
-
-      // type별 디렉토리 생성
-      Files.createDirectories(tmp.resolve(type).resolve("input1"));
-      Files.createDirectories(tmp.resolve(type).resolve("input2"));
-      Files.createDirectories(tmp.resolve(type).resolve("label"));
-      Files.createDirectories(tmp.resolve(type).resolve("label-json"));
-
-      // comparePath → input1
-      hardlinksMade += link(tmp, type, "input1", dto.getComparePath());
-
-      // targetPath → input2
-      hardlinksMade += link(tmp, type, "input2", dto.getTargetPath());
-
-      // labelPath → label
-      hardlinksMade += link(tmp, type, "label", dto.getLabelPath());
-
-      // geoJsonPath -> label-json
-      hardlinksMade += link(tmp, type, "label-json", dto.getGeoJsonPath());
-    }
-
-    if (hardlinksMade == 0) {
-      throw new IOException("No hardlinks created.");
-    }
-
-    log.info("tmp dataset created: {}, hardlinksMade={}", tmp, hardlinksMade);
-  }
-
-  private long link(Path tmp, String type, String part, String fullPath) throws IOException {
-
-    if (fullPath == null || fullPath.isBlank()) return 0;
-
-    Path src = Path.of(fullPath);
-
-    if (!Files.isRegularFile(src)) {
-      log.warn("SKIP (not file): {}", src);
-      return 0;
-    }
-
-    String fileName = src.getFileName().toString();
-    Path dst = tmp.resolve(type).resolve(part).resolve(fileName);
-
-    // 충돌 시 덮어쓰기
-    if (Files.exists(dst)) {
-      log.warn("COLLISION overwrite: dst={} src={}", dst, src);
-      Files.delete(dst);
-    }
-
-    Files.createLink(dst, src);
-
-    return 1;
-  }
-
-  private String safe(String s) {
-    return (s == null || s.isBlank()) ? null : s.trim();
-  }
-
-  /**
-   * request 전체 폴더 link
+   * 다른 데이터셋 파일과 이름이 겹치면 그 파일은 skip함
    *
    * @param uid
-   * @param datasetUids
+   * @param type
+   * @param links
    * @return
    * @throws IOException
    */
-  public String buildTmpDatasetSymlink(String uid, List<String> datasetUids) throws IOException {
+  public String buildTmpDatasetSymlink(String uid, String type, List<ModelTrainLinkDto> links)
+      throws IOException {
 
-    log.info("========== buildTmpDatasetHardlink START ==========");
-    log.info("uid={}", uid);
-    log.info("datasetUids={}", datasetUids);
-    log.info("requestDir(raw)={}", requestDir);
+    if (uid == null || uid.isBlank()) throw new IOException("uid is empty");
+    if (type == null || type.isBlank()) throw new IOException("type is empty");
+    if (links == null || links.isEmpty()) throw new IOException("links is empty");
+
+    log.info("========== buildTmpDatasetHardlink MERGE START ==========");
+    log.info("uid={}, type={}, links.size={}", uid, type, links.size());
 
     Path BASE = toPath(requestDir);
     Path tmp = Path.of(trainBaseDir, "tmp", uid);
 
-    log.info("BASE={}", BASE);
-    log.info("BASE exists? {}", Files.isDirectory(BASE));
-    log.info("tmp={}", tmp);
+    long hardlinksMade = 0;
+    long skippedCollision = 0;
+    long noDir = 0;
 
-    long noDir = 0, scannedDirs = 0, regularFiles = 0, hardlinksMade = 0;
+    // tmp/<type>/<part> 준비
+    for (String part : List.of("input1", "input2", "label", "label-json")) {
+      Files.createDirectories(tmp.resolve(type).resolve(part));
+    }
+
+    for (ModelTrainLinkDto dto : links) {
+      String datasetUid = safe(dto.getDatasetUid());
+      if (datasetUid == null) {
+        log.warn("SKIP dto (datasetUid null): {}", dto);
+        continue;
+      }
+
+      Path srcRoot = BASE.resolve(datasetUid);
 
-    // tmp 디렉토리 준비
-    for (String type : List.of("train", "val", "test")) {
       for (String part : List.of("input1", "input2", "label", "label-json")) {
-        Path dir = tmp.resolve(type).resolve(part);
-        Files.createDirectories(dir);
-        log.info("createDirectories: {}", dir);
-      }
-    }
 
-    // 하드링크는 "같은 파일시스템"에서만 가능하므로 BASE/tmp가 같은 FS인지 미리 확인(권장)
-    try {
-      var baseStore = Files.getFileStore(BASE);
-      var tmpStore = Files.getFileStore(tmp.getParent()); // BASE/tmp
-      if (!baseStore.name().equals(tmpStore.name()) || !baseStore.type().equals(tmpStore.type())) {
-        throw new IOException(
-            "Hardlink requires same filesystem. baseStore="
-                + baseStore.name()
-                + "("
-                + baseStore.type()
-                + "), tmpStore="
-                + tmpStore.name()
-                + "("
-                + tmpStore.type()
-                + ")");
-      }
-    } catch (Exception e) {
-      // FileStore 비교가 환경마다 애매할 수 있어서, 여기서는 경고만 주고 실제 createLink에서 최종 판단하게 둘 수도 있음.
-      log.warn("FileStore check skipped/failed (will rely on createLink): {}", e.toString());
-    }
+        Path srcDir = srcRoot.resolve(type).resolve(part);
+        if (!Files.isDirectory(srcDir)) {
+          noDir++;
+          continue;
+        }
 
-    for (String id : datasetUids) {
-      Path srcRoot = BASE.resolve(id);
-      log.info("---- dataset id={} srcRoot={} exists? {}", id, srcRoot, Files.isDirectory(srcRoot));
+        // ✅ 하위폴더까지 전부
+        try (var walk = Files.walk(srcDir)) {
+          for (Path f : walk.filter(Files::isRegularFile).toList()) {
 
-      for (String type : List.of("train", "val", "test")) {
-        for (String part : List.of("input1", "input2", "label", "label-json")) {
+            String fileName = f.getFileName().toString();
+            Path dst = tmp.resolve(type).resolve(part).resolve(fileName);
 
-          Path srcDir = srcRoot.resolve(type).resolve(part);
-          if (!Files.isDirectory(srcDir)) {
-            log.warn("SKIP (not directory): {}", srcDir);
-            noDir++;
-            continue;
-          }
-
-          scannedDirs++;
-          log.info("SCAN dir={}", srcDir);
-
-          try (var stream = Files.walk(srcDir)) {
-            for (Path f : stream.filter(Files::isRegularFile).toList()) {
-              if (!Files.isRegularFile(f)) {
-                log.debug("skip non-regular file: {}", f);
-                continue;
-              }
-
-              regularFiles++;
-
-              String dstName = f.getFileName().toString();
-              Path dst = tmp.resolve(type).resolve(part).resolve(dstName);
-
-              // dst가 남아있으면 삭제(심볼릭링크든 파일이든) 하고 다시만듬
-              if (Files.exists(dst) || Files.isSymbolicLink(dst)) {
-                Files.delete(dst);
-                log.debug("deleted existing: {}", dst);
-              }
-
-              try {
-                // 하드링크 생성 (dst가 새 파일로 생기지만 inode는 f와 동일)
-                Files.createLink(dst, f);
-                hardlinksMade++;
-                log.debug("created hardlink: {} => {}", dst, f);
-              } catch (IOException e) {
-                // 여기서 바로 실패시키면 “tmp는 만들었는데 내용은 0개” 같은 상태를 방지할 수 있음
-                log.error("FAILED create hardlink: {} => {}", dst, f, e);
-                throw e;
-              }
+            // ✅ 이름 유지 + 충돌은 skip
+            if (Files.exists(dst)) {
+              skippedCollision++;
+              continue;
             }
+
+            Files.createLink(dst, f);
+            hardlinksMade++;
           }
         }
       }
@@ -208,29 +90,35 @@ public class TmpDatasetService {
 
     if (hardlinksMade == 0) {
       throw new IOException(
-          "No hardlinks created. regularFiles="
-              + regularFiles
-              + ", scannedDirs="
-              + scannedDirs
-              + ", noDir="
-              + noDir);
+          "No hardlinks created. noDir=" + noDir + ", skippedCollision=" + skippedCollision);
     }
 
-    log.info("tmp dataset created: {}", tmp);
     log.info(
-        "summary: scannedDirs={}, noDir={}, regularFiles={}, hardlinksMade={}",
-        scannedDirs,
-        noDir,
-        regularFiles,
-        hardlinksMade);
+        "tmp dataset merged: {} (type={}), hardlinksMade={}, skippedCollision={}, noDir={}",
+        tmp,
+        type,
+        hardlinksMade,
+        skippedCollision,
+        noDir);
 
     return uid;
   }
 
   private static Path toPath(String p) {
-    if (p.startsWith("~/")) {
-      return Paths.get(System.getProperty("user.home")).resolve(p.substring(2)).normalize();
+    if (p == null || p.isBlank()) {
+      throw new IllegalArgumentException("path is null or blank");
     }
-    return Paths.get(p).toAbsolutePath().normalize();
+    String trimmed = p.trim();
+    if (trimmed.startsWith("~/")) {
+      return Paths.get(System.getProperty("user.home"))
+          .resolve(trimmed.substring(2))
+          .toAbsolutePath()
+          .normalize();
+    }
+    return Paths.get(trimmed).toAbsolutePath().normalize();
+  }
+
+  private static String safe(String s) {
+    return (s == null || s.isBlank()) ? null : s.trim();
   }
 }

src/main/java/com/kamco/cd/training/train/service/TrainJobService.java

@@ -274,11 +274,11 @@ public class TrainJobService {
       List<ModelTrainLinkDto> testList = modelTrainMngCoreService.findDatasetTestPath(modelId);
 
       // train 데이터셋 심볼링크 생성
-      tmpDatasetService.buildTmpDatasetHardlink(raw, "train", trainList);
+      tmpDatasetService.buildTmpDatasetSymlink(raw, "train", trainList);
       // val 데이터셋 심볼링크 생성
-      tmpDatasetService.buildTmpDatasetHardlink(raw, "val", valList);
+      tmpDatasetService.buildTmpDatasetSymlink(raw, "val", valList);
       // test 데이터셋 심볼링크 생성
-      tmpDatasetService.buildTmpDatasetHardlink(raw, "test", testList);
+      tmpDatasetService.buildTmpDatasetSymlink(raw, "test", testList);
 
       ModelTrainMngDto.UpdateReq updateReq = new ModelTrainMngDto.UpdateReq();
       updateReq.setRequestPath(raw);