googleapis · ohmayr · Aug 13, 2026 · Aug 13, 2026
@@ -246,10 +246,14 @@ class TimestampGranularity(proto.Enum):
             MILLIS (1):
                 The table keeps data versioned at a
                 granularity of 1ms.
+            MICROS (2):
+                The table keeps data versioned at a
+                granularity of 1us.
         """
 
         TIMESTAMP_GRANULARITY_UNSPECIFIED = 0
         MILLIS = 1
+        MICROS = 2
 
     class View(proto.Enum):
         r"""Defines a view over a table's fields.

@@ -1082,8 +1082,36 @@ class Mutation(proto.Message):
             Deletes cells from the entire row.
 
             This field is a member of `oneof`_ ``mutation``.
+        timestamp_origin (google.cloud.bigtable_v2.types.Mutation.TimestampOrigin):
+            Optional. The origin of the timestamp in this
+            mutation.
     """
 
+    class TimestampOrigin(proto.Enum):
+        r"""Represents the origin of the timestamp in the mutation.
+
+        Values:
+            TIMESTAMP_ORIGIN_UNSPECIFIED (0):
+                Default value. Should not be explicitly set.
+            USER_SPECIFIED (1):
+                Indicates that the timestamp was explicitly provided by the
+                user (either ``>0`` or ``-1`` for server-assigned). The
+                server will reject the mutation if the timestamp's precision
+                does not match the table's granularity. (e.g., a millisecond
+                table only allows timestamps that are multiples of 1000).
+            CLIENT_AUTO_GENERATED (2):
+                Indicates that the timestamp was
+                auto-generated by the client library. The server
+                will truncate the timestamp's precision to match
+                the table's granularity.
+                (e.g., zeroing the last 3 digits for a
+                millisecond table).
+        """
+
+        TIMESTAMP_ORIGIN_UNSPECIFIED = 0
+        USER_SPECIFIED = 1
+        CLIENT_AUTO_GENERATED = 2
+
     class SetCell(proto.Message):
         r"""A Mutation which sets the value of the specified cell.
 
@@ -1295,6 +1323,11 @@ class DeleteFromRow(proto.Message):
         oneof="mutation",
         message=DeleteFromRow,
     )
+    timestamp_origin: TimestampOrigin = proto.Field(
+        proto.ENUM,
+        number=7,
+        enum=TimestampOrigin,
+    )
 
 
 class ReadModifyWriteRule(proto.Message):

@@ -18,9 +18,10 @@
 import tempfile
 from unittest import mock
 
-import google.cloud.storage._media.requests.upload as upload_mod
 import pytest  # type: ignore
 
+import google.cloud.storage._media.requests.upload as upload_mod
+
 URL_PREFIX = "https://www.googleapis.com/upload/storage/v1/b/{BUCKET}/o"
 SIMPLE_URL = URL_PREFIX + "?uploadType=media&name={OBJECT}"
 MULTIPART_URL = URL_PREFIX + "?uploadType=multipart"

@@ -23,6 +23,7 @@
 import mock
 import pytest
 from google.api_core import exceptions
+
 from google.cloud.storage._helpers import _base64_md5hash
 from google.cloud.storage.exceptions import DataCorruption