rakeshadr commented on a change in pull request #1557:
URL: https://github.com/apache/ozone/pull/1557#discussion_r523107566
##########
File path:
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/file/OMFileRequest.java
##########
@@ -696,4 +697,91 @@ public static String getAbsolutePath(String prefixName,
String fileName) {
}
return prefixName.concat(OzoneConsts.OZONE_URI_DELIMITER).concat(fileName);
}
+
+ /**
+ * Build DirectoryInfo from OmKeyInfo.
+ *
+ * @param keyInfo omKeyInfo
+ * @return omDirectoryInfo object
+ */
+ public static OmDirectoryInfo getDirectoryInfo(OmKeyInfo keyInfo){
+ OmDirectoryInfo.Builder builder = new OmDirectoryInfo.Builder();
+ builder.setParentObjectID(keyInfo.getParentObjectID());
+ builder.setAcls(keyInfo.getAcls());
+ builder.addAllMetadata(keyInfo.getMetadata());
+ builder.setCreationTime(keyInfo.getCreationTime());
+ builder.setModificationTime(keyInfo.getModificationTime());
+ builder.setObjectID(keyInfo.getObjectID());
+ builder.setUpdateID(keyInfo.getUpdateID());
+ builder.setName(OzoneFSUtils.getFileName(keyInfo.getKeyName()));
+ return builder.build();
+ }
+
+ /**
+ * Verify that the given toKey directory is a sub directory of fromKey
+ * directory.
+ * <p>
+ * For example, special case of renaming a directory to its own
+ * sub-directory is not allowed.
+ *
+ * @param fromKeyName source path
+ * @param toKeyName destination path
+ * @throws OMException if the dest dir is a sub-dir of source dir.
+ */
+ public static void verifyToDirIsASubDirOfFromDirectory(String fromKeyName,
+ String toKeyName, boolean isDir) throws OMException {
+ if (!isDir) {
+ return;
+ }
+ Path dstParent = Paths.get(toKeyName).getParent();
+ while (dstParent != null) {
+ if (Paths.get(fromKeyName).equals(dstParent)) {
+ throw new OMException("Cannot rename a directory to its own " +
+ "subdirectory", OMException.ResultCodes.KEY_RENAME_ERROR);
+ // TODO: Existing rename throws java.lang.IllegalArgumentException.
+ // Should we throw same exception ?
+ }
+ dstParent = dstParent.getParent();
+ }
+ }
+
+ /**
+ * Verify parent exists for the destination path and return destination
+ * path parent Id.
+ * <p>
+ * Check whether dst parent dir exists or not. If the parent exists, then the
+ * source can be renamed to dst path.
+ *
+ * @param volumeName volume name
+ * @param bucketName bucket name
+ * @param toKeyName destination path
+ * @param fromKeyName source path
+ * @param metaMgr metadata manager
+ * @throws IOException if the destination parent dir doesn't exists.
+ */
+ public static long getToKeyNameParentId(String volumeName,
+ String bucketName, String toKeyName, String fromKeyName,
+ OMMetadataManager metaMgr) throws IOException {
+
+ int totalDirsCount = OzoneFSUtils.getFileCount(toKeyName);
+ // skip parent is root '/'
+ if (totalDirsCount <= 1) {
+ String bucketKey = metaMgr.getBucketKey(volumeName, bucketName);
+ OmBucketInfo omBucketInfo =
+ metaMgr.getBucketTable().get(bucketKey);
+ return omBucketInfo.getObjectID();
+ }
+
+ String toKeyParentDir = OzoneFSUtils.getParentDir(toKeyName);
+
+ OzoneFileStatus toKeyParentDirStatus = getOMKeyInfoIfExists(metaMgr,
+ volumeName, bucketName, toKeyParentDir, 0);
+ // check if the immediate parent exists
+ if (toKeyParentDirStatus == null || toKeyParentDirStatus.isFile()) {
+ throw new OMException(String.format(
Review comment:
Sure, I will check and make proper error message to differentiate both
cases.
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