[GitHub] [iceberg] jackye1995 commented on a diff in pull request #5870: Python: Add GlueCatalog Table Creation and Loading Support

[GitBox <gi...@apache.org>]

jackye1995 commented on code in PR #5870:
URL: https://github.com/apache/iceberg/pull/5870#discussion_r984964145


##########
python/pyiceberg/catalog/glue.py:
##########
@@ -0,0 +1,246 @@
+#  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.
+
+
+import getpass
+import uuid
+
+import boto3
+from datetime import datetime
+from typing import Union, Optional, List, Set, Dict
+
+from pyiceberg.catalog.hive import OWNER
+
+from pyiceberg.exceptions import (
+    NamespaceAlreadyExistsError,
+    NamespaceNotEmptyError,
+    NoSuchNamespaceError,
+    NoSuchTableError,
+    TableAlreadyExistsError,
+)
+
+from pyiceberg.catalog import (
+    Catalog,
+    Identifier,
+    Properties,
+    PropertiesUpdateSummary,
+)
+from pyiceberg.io import FileIO, load_file_io
+from pyiceberg.schema import Schema
+from pyiceberg.serializers import FromInputFile, ToOutputFile
+from pyiceberg.table import Table
+from pyiceberg.table.metadata import TableMetadata, new_table_metadata
+from pyiceberg.table.partitioning import PartitionSpec, UNPARTITIONED_PARTITION_SPEC
+from pyiceberg.table.sorting import SortOrder, UNSORTED_SORT_ORDER, SortDirection
+from pyiceberg.typedef import EMPTY_DICT
+
+from pyiceberg.types import NestedField
+
+ICEBERG = "ICEBERG"
+EXTERNAL_TABLE_TYPE = "EXTERNAL_TABLE"
+
+PROP_TABLE_TYPE = "table_type"
+PROP_WAREHOUSE = "warehouse"
+PROP_METADATA_LOCATION = "metadata_location"
+PROP_TABLE_DESCRIPTION = "description"
+
+PROP_GLUE_TABLE = "Table"
+PROP_GLUE_TABLE_PARAMETERS = "Parameters"
+PROP_GLUE_TABLE_DATABASE_NAME = "DatabaseName"
+PROP_GLUE_TABLE_NAME = "Name"
+
+PROP_GLUE_DATABASE = "Database"
+PROP_GLUE_DATABASE_LOCATION = "LocationUri"
+
+
+def _construct_parameters(metadata_location: str) -> Dict[str, str]:
+    properties = {PROP_TABLE_TYPE: ICEBERG, PROP_METADATA_LOCATION: metadata_location}
+    return properties
+
+
+def _convert_glue_to_iceberg(glue_table, io: FileIO) -> Table:
+    properties: Dict[str, str] = glue_table[PROP_GLUE_TABLE_PARAMETERS]
+
+    if PROP_TABLE_TYPE not in properties:
+        raise NoSuchTableError(
+            f"Property table_type missing, could not determine type: "
+            f"{glue_table[PROP_GLUE_TABLE_DATABASE_NAME]}.{glue_table[PROP_GLUE_TABLE_NAME]}")
+    glue_table_type = properties.get(PROP_TABLE_TYPE)
+    if glue_table_type != ICEBERG:
+        raise NoSuchTableError(
+            f"Property table_type is {glue_table_type}, expected {ICEBERG}: "
+            f"{glue_table[PROP_GLUE_TABLE_DATABASE_NAME]}.{glue_table[PROP_GLUE_TABLE_NAME]}")
+    if prop_meta_location := properties.get(PROP_METADATA_LOCATION):
+        metadata_location = prop_meta_location
+    else:
+        raise NoSuchTableError(f"Table property {PROP_METADATA_LOCATION} is missing")
+
+    file = io.new_input(metadata_location)
+    metadata = FromInputFile.table_metadata(file)
+    return Table(
+        identifier=(glue_table[PROP_GLUE_TABLE_DATABASE_NAME], glue_table[PROP_GLUE_TABLE_NAME]),
+        metadata=metadata,
+        metadata_location=metadata_location
+    )
+
+
+def _write_metadata(metadata: TableMetadata, io: FileIO, metadate_path: str):
+    ToOutputFile.table_metadata(metadata, io.new_output(metadate_path))
+
+
+class GlueCatalog(Catalog):
+
+    def __init__(self, name: str, **properties: Properties):
+        super().__init__(name, **properties)
+        self.glue = boto3.client("glue")
+
+    def _default_warehouse_location(self, database_name: str, table_name: str):
+        try:
+            response = self.glue.get_database(Name=database_name)
+        except self.glue.exceptions.EntityNotFoundException:
+            raise NoSuchNamespaceError(f"The database: {database_name} does not exist")
+
+        if PROP_GLUE_DATABASE_LOCATION in response[PROP_GLUE_DATABASE]:
+            return f"{response[PROP_GLUE_DATABASE][PROP_GLUE_DATABASE]}/table_name"

Review Comment:
   `{table_name}`?



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