Add Looker connection types and LevelDB documentation

providers/google/docs/connections/leveldb.rst

@@ -0,0 +1,67 @@
+ .. 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.
+
+.. _howto/connection:leveldb:
+
+LevelDB Connection
+==================
+
+The **LevelDB** connection type enables tasks to interact with a local (or mounted) `LevelDB
+<https://github.com/google/leveldb>`_ database by means of
+:class:`airflow.providers.google.leveldb.hooks.leveldb.LevelDBHook`
+(which is a thin wrapper around the `Plyvel <https://plyvel.readthedocs.io/>`_ client).
+
+Default Connection IDs
+----------------------
+
+Hooks related to LevelDB use ``leveldb_default`` by default.
+
+Configuring the Connection
+--------------------------
+
+LevelDB runs as an *embedded* key‑value store—there is no server to connect to.
+Consequently, the Airflow connection only needs enough information to locate (and,
+optionally, create) the on‑disk database.
+
+Host
+    **Path** to the database directory (for example ``/tmp/testdb`` or
+    ``/opt/airflow/data/leveldb``).
+    If the directory does not yet exist you may allow the hook to create it via the
+    ``create_if_missing`` extra parameter (see below).
+
+Login / Password / Port / Schema
+    Not used by :class:`LevelDBHook`.  Leave these fields blank.
+
+Extra (optional, JSON)
+    Additional options accepted by :py:meth:`plyvel.DB`:
+
+    ``create_if_missing`` *(bool)*
+        When *true*, a new database directory will be created if it is absent.
+        Defaults to *false* (raises an error if the path does not exist).
+
+    ``error_if_exists`` *(bool)*
+        Raise an exception if the database already exists (defaults to *false*).
+
+    Any other keyword argument supported by ``plyvel.DB`` will be forwarded
+    unchanged.
+
+Example *Extra* field value::
+
+    {
+        "create_if_missing": true,
+        "error_if_exists": false
+    }

providers/google/provider.yaml

@@ -1107,6 +1107,8 @@ connection-types:
     connection-type: leveldb
   - hook-class-name: airflow.providers.google.ads.hooks.ads.GoogleAdsHook
     connection-type: google_ads
+  - hook-class-name: airflow.providers.google.cloud.hooks.looker.LookerHook
+    connection-type: gcp_looker
 
 extra-links:
   - airflow.providers.google.cloud.links.alloy_db.AlloyDBBackupsLink

providers/google/src/airflow/providers/google/cloud/hooks/looker.py

@@ -39,6 +39,11 @@
 class LookerHook(BaseHook):
     """Hook for Looker APIs."""
 
+    conn_name_attr = "looker_conn_id"
+    default_conn_name = "looker_default"
+    conn_type = "gcp_looker"
+    hook_name = "Google Looker"
+
     def __init__(
         self,
         looker_conn_id: str,

providers/google/src/airflow/providers/google/get_provider_info.py

@@ -1372,6 +1372,10 @@ def get_provider_info():
                 "hook-class-name": "airflow.providers.google.ads.hooks.ads.GoogleAdsHook",
                 "connection-type": "google_ads",
             },
+            {
+                "hook-class-name": "airflow.providers.google.cloud.hooks.looker.LookerHook",
+                "connection-type": "gcp_looker",
+            },
         ],
         "extra-links": [
             "airflow.providers.google.cloud.links.alloy_db.AlloyDBBackupsLink",