Fokko commented on code in PR #1935: URL: https://github.com/apache/iceberg-python/pull/1935#discussion_r2059089720
########## pyiceberg/table/update/validate.py: ########## @@ -0,0 +1,71 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +from pyiceberg.exceptions import ValidationException +from pyiceberg.manifest import ManifestContent, ManifestFile +from pyiceberg.table import Table +from pyiceberg.table.snapshots import Operation, Snapshot, ancestors_between + + +def validation_history( + table: Table, + to_snapshot: Snapshot, + from_snapshot: Snapshot, + matching_operations: set[Operation], + manifest_content_filter: ManifestContent, +) -> tuple[list[ManifestFile], set[int]]: + """Return newly added manifests and snapshot IDs between the starting snapshot and parent snapshot. + + Args: + table: Table to get the history from + to_snapshot: Starting snapshot + from_snapshot: Parent snapshot to get the history from + matching_operations: Operations to match on + manifest_content_filter: Manifest content type to filter + + Raises: + ValidationException: If no matching snapshot is found or only one snapshot is found + + Returns: + List of manifest files and set of snapshots ID's matching conditions + """ + manifests_files: list[ManifestFile] = [] + snapshots: set[int] = set() + + last_snapshot = None + for snapshot in ancestors_between(to_snapshot, from_snapshot, table.metadata): + last_snapshot = snapshot + summary = snapshot.summary + if summary is None: + raise ValidationException(f"No summary found for snapshot {snapshot}!") + if summary.operation not in matching_operations: + continue + + if snapshot not in snapshots: + snapshots.add(snapshot.snapshot_id) + manifests_files.extend( + [ + manifest + for manifest in snapshot.manifests(table.io) + if manifest.added_snapshot_id == snapshot.snapshot_id and manifest.content == manifest_content_filter + ] + ) + + if last_snapshot is None or last_snapshot.snapshot_id == from_snapshot.snapshot_id: + raise ValidationException("No matching snapshot found.") Review Comment: We can leave it like this for now, but it seems odd to throw here, since there is no history to validate, which in turn is valid. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
