Support for Iceberg from YAML via ManagedIO.

sdks/python/apache_beam/yaml/standard_io.yaml

@@ -129,6 +129,8 @@
     'WriteToText': 'apache_beam.yaml.yaml_io.write_to_text'
     'ReadFromPubSub': 'apache_beam.yaml.yaml_io.read_from_pubsub'
     'WriteToPubSub': 'apache_beam.yaml.yaml_io.write_to_pubsub'
+    'ReadFromIceberg': 'apache_beam.yaml.yaml_io.read_from_iceberg'
+    'WriteToIceberg': 'apache_beam.yaml.yaml_io.write_to_iceberg'
 
 # Declared as a renaming transform to avoid exposing all
 # (implementation-specific) pandas arguments and aligning with possible Java

sdks/python/apache_beam/yaml/tests/iceberg.yaml

@@ -0,0 +1,55 @@
+#
+# 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.
+#
+
+fixtures:
+  - name: TEMP_DIR
+    type: "tempfile.TemporaryDirectory"
+
+pipelines:
+  - pipeline:
+      type: chain
+      transforms:
+        - type: Create
+          config:
+            elements:
+              - {label: "11a", rank: 0}
+              - {label: "37a", rank: 1}
+              - {label: "389a", rank: 2}
+        - type: WriteToIceberg
+          config:
+            table: "default.table"
+            catalog_name: "some_catalog"
+            catalog_properties:
+              type: "hadoop"
+              warehouse: "{TEMP_DIR}/dir"
+
+  - pipeline:
+      type: chain
+      transforms:
+        - type: ReadFromIceberg
+          config:
+            table: "default.table"
+            catalog_name: "some_catalog"
+            catalog_properties:
+              type: "hadoop"
+              warehouse: "{TEMP_DIR}/dir"
+        - type: AssertEqual
+          config:
+            elements:
+              - {label: "11a", rank: 0}
+              - {label: "37a", rank: 1}
+              - {label: "389a", rank: 2}

sdks/python/apache_beam/yaml/yaml_io.py

@@ -484,6 +484,96 @@ def attributes_extractor(row):
           timestamp_attribute=timestamp_attribute))
 
 
+def read_from_iceberg(
+    table: str,
+    catalog_name: Optional[str] = None,
+    catalog_properties: Optional[Mapping[str, str]] = None,
+    config_properties: Optional[Mapping[str, str]] = None,
+):
+  # TODO(robertwb): It'd be nice to derive this list of parameters, along with
+  # their types and docs, programmatically from the iceberg (or managed)
+  # schemas.
+
+  """Reads an Apache Iceberg table.
+
+  See also the [Apache Iceberg Beam documentation](
+  https://cloud.google.com/dataflow/docs/guides/managed-io#iceberg).
+
+  Args:
+    table: The identifier of the Apache Iceberg table. Example: "db.table1".
+    catalog_name: The name of the catalog. Example: "local".
+    catalog_properties: A map of configuration properties for the Apache Iceberg
+      catalog.
+      The required properties depend on the catalog. For more information, see
+      CatalogUtil in the Apache Iceberg documentation.
+    config_properties: An optional set of Hadoop configuration properties.
+      For more information, see CatalogUtil in the Apache Iceberg documentation.
+  """
+  return beam.managed.Read(
+      "iceberg",
+      config=dict(
+          table=table,
+          catalog_name=catalog_name,
+          catalog_properties=catalog_properties,
+          config_properties=config_properties))
+
+
+def write_to_iceberg(
+    table: str,
+    catalog_name: Optional[str] = None,
+    catalog_properties: Optional[Mapping[str, str]] = None,
+    config_properties: Optional[Mapping[str, str]] = None,
+    triggering_frequency_seconds: Optional[int] = None,
+    keep: Optional[Iterable[str]] = None,
+    drop: Optional[Iterable[str]] = None,
+    only: Optional[str] = None,
+):
+  # TODO(robertwb): It'd be nice to derive this list of parameters, along with
+  # their types and docs, programmatically from the iceberg (or managed)
+  # schemas.
+
+  """Writes to an Apache Iceberg table.
+
+  See also the [Apache Iceberg Beam documentation](
+  https://cloud.google.com/dataflow/docs/guides/managed-io#iceberg)
+  and [](
+  https://cloud.google.com/dataflow/docs/guides/managed-io#dynamic-destinations)
+  for use of the keep, drop, and only parameters.
+
+  Args:
+    table: The identifier of the Apache Iceberg table. Example: "db.table1".
+    catalog_name: The name of the catalog. Example: "local".
+    catalog_properties: A map of configuration properties for the Apache Iceberg
+      catalog.
+      The required properties depend on the catalog. For more information, see
+      CatalogUtil in the Apache Iceberg documentation.
+    config_properties: An optional set of Hadoop configuration properties.
+      For more information, see CatalogUtil in the Apache Iceberg documentation.
+    triggering_frequency_seconds: For streaming write pipelines, the frequency
+      at which the sink attempts to produce snapshots, in seconds.
+
+    keep: An optional list of field names to keep when writing to the
+      destination. Other fields are dropped. Mutually exclusive with drop
+      and only.
+    drop: An optional list of field names to drop before writing to the
+        destination. Mutually exclusive with keep and only.
+    only: The name of exactly one field to keep as the top level record when
+      writing to the destination. All other fields are dropped. This field must
+      be of row type. Mutually exclusive with drop and keep.
+  """
+  return beam.managed.Write(
+      "iceberg",
+      config=dict(
+          table=table,
+          catalog_name=catalog_name,
+          catalog_properties=catalog_properties,
+          config_properties=config_properties,
+          triggering_frequency_seconds=triggering_frequency_seconds,
+          keep=keep,
+          drop=drop,
+          only=only))
+
+
 def io_providers():
   with open(os.path.join(os.path.dirname(__file__), 'standard_io.yaml')) as fin:
     return yaml_provider.parse_providers(yaml.load(fin, Loader=yaml.SafeLoader))