feat: async execute query client by kboroszko · Pull Request #1011 · googleapis/python-bigtable

kboroszko · 2024-08-05T14:28:24Z

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Description

This PR introduces support for the newly added executeQuery RPC in the Bigtable async client.

It handles executing parameterized queries and receiving streaming responses through an asynchronous iterator.
Most of the logic is located in google.cloud.bigtable.data.execute_query.
Example usage is in samples/snippets/data_client/data_client_snippets_async.py

Co-authored-by: Mateusz Walkiewicz <mwalkiewicz@unoperate.com>

snippet-bot · 2024-08-05T14:28:31Z

Here is the summary of changes.

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samples/snippets/data_client/data_client_snippets_async.py:257, tag bigtable_async_execute_query

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daniel-sanche

Added a couple requests for missing docstrings, etc. But overall LGTM once the tests pass

daniel-sanche · 2024-08-05T16:24:14Z

google/cloud/bigtable/data/exceptions.py

+
+
+class ParameterTypeInferenceFailed(ValueError):
+    pass


nit: it would be good to have a docstring here

daniel-sanche · 2024-08-05T16:24:42Z

google/cloud/bigtable/data/execute_query/_async/execute_query_iterator.py

+)
+
+
+class ExecuteQueryIteratorAsync:


daniel-sanche · 2024-08-05T16:25:13Z

google/cloud/bigtable/data/execute_query/_async/execute_query_iterator.py

+    def __aiter__(self):
+        return self
+
+    async def metadata(self) -> Optional[Metadata]:


please add docstrings on all of these methods

daniel-sanche · 2024-08-05T16:25:45Z

google/cloud/bigtable/data/execute_query/_parameters_formatting.py

+    params: Optional[Dict[str, ExecuteQueryValueType]],
+    parameter_types: Optional[Dict[str, SqlType.Type]],
+):
+    if not params:


docstrings on these would also be helpful for future maintenance

It doesn't need to be too complex for the internal functions, but some context would be useful

daniel-sanche · 2024-08-05T16:26:03Z

google/cloud/bigtable/data/execute_query/_query_result_parsing_utils.py

+
+
+def _parse_array_type(value: PBValue, metadata_type: SqlType.Array) -> list:
+    return list(


docstrings here too

daniel-sanche · 2024-08-05T16:28:32Z

google/cloud/bigtable_v2/__init__.py

    "SampleRowKeysRequest",
    "SampleRowKeysResponse",
+    "ExecuteQueryRequest",
+    "ExecuteQueryResponse",


This file is autogenerated and doesn't need to be touched (These are already included in lines 87/88)

daniel-sanche · 2024-08-05T16:30:40Z

tests/unit/data/test_byte_cursor.py

@@ -0,0 +1,149 @@
+# Copyright 2024 Google LLC


Previously, the test files mirrored the structure of the source files. It might make sense to throw these into an execute_query directory?

daniel-sanche · 2024-08-05T23:13:40Z

FYI, you can ignore the failing samples tests. There's a quota issue in the samples project we're looking in to

daniel-sanche · 2024-08-07T16:29:42Z

google/cloud/bigtable/data/execute_query/metadata.py

        )

-        def _to_value_pb_dict(self, value: Any) -> dict:
+        def _to_value_pb_dict(self, value: Any) -> Any:


It's not too important, but do we have to use Any for these? Does dict[str, Any] not work?

google/cloud/bigtable/data/execute_query/values.py

daniel-sanche · 2024-08-08T16:56:03Z

samples/snippets/data_client/data_client_snippets_async.py

+            query = (
+                "SELECT _key, os_build, connected_cell, connected_wifi "
+                f"from {table_id} WHERE _key=@row_key"
+            )


I know I said to ignore the samples tests, but it looks like there's actually an issue here:

google.api_core.exceptions.InvalidArgument: 400 Syntax error: Missing whitespace between literal and alias [at 1:87]

Also, there's a snippet lint issue that can be addressed using

cd samples/snippets/data_client nox -s blacken

To fix the invalid argument do: f"from `{table_id}` WHERE _key=@row_key" (wraps the table name in backticks)

Daniel pointed out the column names here aren't working either. All of those are qualifiers.

We should update the first line of the query to SELECT _key, stats_summary['os_build'], stats_summary['connected_cell'], stats_summary['connected_wifi']

daniel-sanche

blocking until sample is addressed

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daniel-sanche

LGTM

kboroszko and others added 4 commits July 31, 2024 10:40

feat: ByteCursor and ProtoRowsReader

64a2496

feat: async client

92cda65

Co-authored-by: Mateusz Walkiewicz <mwalkiewicz@unoperate.com>

protbufs update

9554eb2

fix: refactor execute query related files (googleapis#34)

88e0492

kboroszko requested a review from a team as a code owner August 5, 2024 14:28

kboroszko requested review from a team August 5, 2024 14:28

kboroszko requested a review from a team as a code owner August 5, 2024 14:28

kboroszko requested a review from msampathkumar August 5, 2024 14:28

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feat: async execute query client#1011

feat: async execute query client#1011
daniel-sanche merged 10 commits intogoogleapis:mainfrom
kboroszko:async-execute-query-client

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		def _parse_array_type(value: PBValue, metadata_type: SqlType.Array) -> list:
		return list(

		)


		class ExecuteQueryIteratorAsync:

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