Report the newest member time for object store directory keys

README.md

@@ -165,7 +165,7 @@ PgLOG.pglog("hello", PgLOG.LOGWRN)
 python -c "import rda_python_common; print(rda_python_common.__version__)"
 ```
 
-You should see the installed version (currently `3.0.16`).  If the import
+You should see the installed version (currently `3.0.17`).  If the import
 fails, double-check that the active Python environment is the one where you
 ran `pip install`.
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "rda_python_common"
-version = "3.0.16"
+version = "3.0.17"
 authors = [
   { name="Zaihua Ji", email="zji@ucar.edu" },
 ]

src/rda_python_common/__init__.py

@@ -22,7 +22,7 @@
 
 from . import PgLOG, PgUtil, PgDBI, PgFile, PgLock, PgCMD, PgSIG, PgOPT, PgSplit
 
-__version__ = "3.0.16"
+__version__ = "3.0.17"
 
 __all__ = [
    "PgLOG",

src/rda_python_common/pg_file.py

@@ -2357,22 +2357,23 @@ def check_object_file(self, file, bucket = None, opt = 0, logact = 0):
             if re.match(r'^\[\]', buf): break
             if re.match(r'^\[\{', buf):
                ary = json.loads(buf)
-               hash = ary[0]
+               cnt = len(ary)
+               isdir = (cnt > 1 or ary[0]['Key'] != file)
+               # a key prefix has no timestamp of its own; report the newest member's
+               hash = max(ary, key = lambda a: a['LastModified']) if isdir else ary[0]
                uhash = None
                if ucmd:
                   ubuf = self.pgsystem(ucmd, self.LOGWRN, self.CMDRET)
                   if ubuf and re.match(r'^\{', ubuf): uhash = json.loads(ubuf)
                ret = self.object_file_stat(hash, uhash, opt)
-               if ret:
-                  cnt = len(ary)
-                  if cnt > 1 or hash['Key'] != file:
-                     ret['count'] = cnt
-                     ret['fname'] = op.basename(file)
-                     ret['isfile'] = 0
-                     size = 0
-                     for a in ary:
-                        size += int(a['Size'])
-                     ret['data_size'] = size
+               if ret and isdir:
+                  ret['count'] = cnt
+                  ret['fname'] = op.basename(file)
+                  ret['isfile'] = 0
+                  size = 0
+                  for a in ary:
+                     size += int(a['Size'])
+                  ret['data_size'] = size
                uhash = None
                break
          if opt&64: return self.FAILURE