rdblue commented on a change in pull request #3677:
URL: https://github.com/apache/iceberg/pull/3677#discussion_r763314624
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File path: python/src/iceberg/table/metadata.py
##########
@@ -0,0 +1,215 @@
+import codecs
+import json
+from typing import Any, Optional, Union
+
+import boto3
+from jsonschema import validate as validate_json
+from jsonschema.exceptions import ValidationError
+
+from iceberg.io.s3 import S3Url
+
+TABLE_METADATA_V1_SCHEMA = {
+ "$schema": "http://json-schema.org/draft-04/schema#";,
+ "type": "object",
+ "properties": {
+ "format-version": {"type": "string"},
+ "table-uuid": {"type": "string"},
+ "location": {"type": "string"},
+ "last-sequence-number": {"type": "integer"},
+ "last-updated-ms": {"type": "integer"},
+ "last-column-id": {"type": "integer"},
+ "schemas": {"type": "array", "items": {}},
+ "current-schema-id": {"type": "integer"},
+ "partition-spec": {"type": "array", "items": {}},
+ "partition-specs": {"type": "array", "items": {}},
+ "default-spec-id": {"type": "integer"},
+ "last-partition-id": {"type": "integer"},
+ "properties": {"type": "object"},
+ "current-snapshot-id": {"type": "number"},
+ "snapshots": {"type": "array", "items": {}},
+ "snapshot-log": {"type": "array", "items": {}},
+ "metadata-log": {"type": "array", "items": {}},
+ "sort-orders": {"type": "array", "items": {}},
+ "default-sort-order-id": {"type": "integer"},
+ },
+ "required": [
+ "format-version",
+ "table-uuid",
+ "location",
+ "last-sequence-number",
+ "last-updated-ms",
+ "last-column-id",
+ "schemas",
+ "current-schema-id",
+ "partition-spec",
+ "partition-specs",
+ "default-spec-id",
+ "last-partition-id",
+ "properties",
+ "current-snapshot-id",
+ "snapshots",
+ "snapshot-log",
+ "metadata-log",
+ "sort-orders",
+ "default-sort-order-id",
+ ],
+}
+TABLE_METADATA_V2_SCHEMA = {
+ "$schema": "http://json-schema.org/draft-04/schema#";,
+ "type": "object",
+ "properties": {
+ "format-version": {"type": "string"},
+ "table-uuid": {"type": "string"},
+ "location": {"type": "string"},
+ "last-sequence-number": {"type": "integer"},
+ "last-updated-ms": {"type": "integer"},
+ "last-column-id": {"type": "integer"},
+ "schemas": {"type": "array", "items": {}},
+ "current-schema-id": {"type": "integer"},
+ "partition-spec": {"type": "array", "items": {}},
+ "partition-specs": {"type": "array", "items": {}},
+ "default-spec-id": {"type": "integer"},
+ "last-partition-id": {"type": "integer"},
+ "properties": {"type": "object"},
+ "current-snapshot-id": {"type": "number"},
+ "snapshots": {"type": "array", "items": {}},
+ "snapshot-log": {"type": "array", "items": {}},
+ "metadata-log": {"type": "array", "items": {}},
+ "sort-orders": {"type": "array", "items": {}},
+ "default-sort-order-id": {"type": "integer"},
+ },
+ "required": [
+ "format-version",
+ "table-uuid",
+ "location",
+ "last-sequence-number",
+ "last-updated-ms",
+ "last-column-id",
+ "schemas",
+ "current-schema-id",
+ "partition-spec",
+ "partition-specs",
+ "default-spec-id",
+ "last-partition-id",
+ "properties",
+ "current-snapshot-id",
+ "snapshots",
+ "snapshot-log",
+ "metadata-log",
+ "sort-orders",
+ "default-sort-order-id",
+ ],
+}
+
+
+class TableMetadata:
+ """Metadata for an Iceberg table as specified in the Apache Iceberg
+ spec (https://iceberg.apache.org/spec/#iceberg-table-spec)
+
+ Args:
+ metadata (dict): Table metadata dictionary representation
+ version (str|int): The metadata spec version (1 or 2)
+ """
+
+ def __init__(self, metadata: dict, version: Union[str, int]):
+ self._version = version
Review comment:
`int(version)` to be able to assume that it is an int elsewhere?
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