feat: Add Couchbase as an online store

Makefile

@@ -359,6 +359,25 @@ test-python-universal-singlestore-online:
  			-k "test_retrieve_online_documents" \
  			sdk/python/tests/integration/online_store/test_universal_online.py
 
+test-python-universal-couchbase-online:
+	PYTHONPATH='.' \
+		FULL_REPO_CONFIGS_MODULE=sdk.python.feast.infra.online_stores.contrib.couchbase_repo_configuration \
+		PYTEST_PLUGINS=sdk.python.tests.integration.feature_repos.universal.online_store.couchbase \
+		python -m pytest -n 8 --integration \
+			-k "not test_universal_cli and \
+				not test_go_feature_server and \
+				not test_feature_logging and \
+				not test_reorder_columns and \
+				not test_logged_features_validation and \
+				not test_lambda_materialization_consistency and \
+				not test_offline_write and \
+				not test_push_features_to_offline_store and \
+				not gcs_registry and \
+				not s3_registry and \
+				not test_universal_types and \
+				not test_snowflake" \
+		sdk/python/tests
+
 test-python-universal:
 	python -m pytest -n 8 --integration sdk/python/tests
 

docs/SUMMARY.md

@@ -107,6 +107,7 @@
   * [Remote](reference/online-stores/remote.md)
   * [PostgreSQL (contrib)](reference/online-stores/postgres.md)
   * [Cassandra + Astra DB (contrib)](reference/online-stores/cassandra.md) 
+  * [Couchbase (contrib)](reference/online-stores/couchbase.md) 
   * [MySQL (contrib)](reference/online-stores/mysql.md)
   * [Hazelcast (contrib)](reference/online-stores/hazelcast.md)
   * [ScyllaDB (contrib)](reference/online-stores/scylladb.md)

docs/reference/online-stores/README.md

@@ -46,6 +46,10 @@ Please see [Online Store](../../getting-started/components/online-store.md) for
 [cassandra.md](cassandra.md)
 {% endcontent-ref %}
 
+{% content-ref url="couchbase.md" %}
+[couchbase.md](couchbase.md)
+{% endcontent-ref %}
+
 {% content-ref url="mysql.md" %}
 [mysql.md](mysql.md)
 {% endcontent-ref %}
@@ -60,6 +64,7 @@ Please see [Online Store](../../getting-started/components/online-store.md) for
 
 {% content-ref url="remote.md" %}
 [remote.md](remote.md)
+{% endcontent-ref %}
 
 {% content-ref url="singlestore.md" %}
 [singlestore.md](singlestore.md)

docs/reference/online-stores/couchbase.md

@@ -0,0 +1,78 @@
+# Couchbase Online Store
+> NOTE:
+> This is a community-contributed online store that is in alpha development. It is not officially supported by the Feast project.
+
+## Description
+The [Couchbase](https://www.couchbase.com/) online store provides support for materializing feature values into a Couchbase Operational cluster for serving online features in real-time.
+
+* Only the latest feature values are persisted
+* Features are stored in a document-oriented format
+
+The data model for using Couchbase as an online store follows a document format:
+* Document ID: `{project}:{table_name}:{entity_key_hex}:{feature_name}`
+* Document Content:
+    * `metadata`:
+        * `event_ts` (ISO formatted timestamp)
+        * `created_ts` (ISO formatted timestamp)
+        * `feature_name` (String)
+    * `value` (Base64 encoded protobuf binary)
+
+
+## Getting started
+In order to use this online store, you'll need to run `pip install 'feast[couchbase]'`. You can then get started with the command `feast init REPO_NAME -t couchbase`.
+
+To get started with Couchbase Capella Operational:
+1. [Sign up for a Couchbase Capella account](https://docs.couchbase.com/cloud/get-started/create-account.html#sign-up-free-tier)
+2. [Deploy an Operational cluster](https://docs.couchbase.com/cloud/get-started/create-account.html#getting-started)
+3. [Create a bucket](https://docs.couchbase.com/cloud/clusters/data-service/manage-buckets.html#add-bucket)
+    - This can be named anything, but must correspond to the bucket described in the `feature_store.yaml` configuration file.
+4. [Create cluster access credentials](https://docs.couchbase.com/cloud/clusters/manage-database-users.html#create-database-credentials)
+    - These credentials should have full access to the bucket created in step 3.
+5. [Configure allowed IP addresses](https://docs.couchbase.com/cloud/clusters/allow-ip-address.html)
+    - You must allow the IP address of the machine running Feast.
+
+## Example
+{% code title="feature_store.yaml" %}
+```yaml
+project: my_feature_repo
+registry: data/registry.db
+provider: local
+online_store:
+  type: couchbase
+  connection_string: couchbase://127.0.0.1 # Couchbase connection string, copied from 'Connect' page in Couchbase Capella console
+  user: Administrator  # Couchbase username from access credentials
+  password: password  # Couchbase password from access credentials
+  bucket_name: feast  # Couchbase bucket name, defaults to feast
+  kv_port: 11210  # Couchbase key-value port, defaults to 11210. Required if custom ports are used. 
+entity_key_serialization_version: 2
+```
+{% endcode %}
+
+The full set of configuration options is available in `CouchbaseOnlineStoreConfig`.
+
+
+## Functionality Matrix
+The set of functionality supported by online stores is described in detail [here](overview.md#functionality).
+Below is a matrix indicating which functionality is supported by the Couchbase online store.
+
+|                                                           | Couchbase |
+| :-------------------------------------------------------- | :-------- |
+| write feature values to the online store                  | yes       |
+| read feature values from the online store                 | yes       |
+| update infrastructure (e.g. tables) in the online store   | yes       |
+| teardown infrastructure (e.g. tables) in the online store | yes       |
+| generate a plan of infrastructure changes                 | no        |
+| support for on-demand transforms                          | yes       |
+| readable by Python SDK                                    | yes       |
+| readable by Java                                          | no        |
+| readable by Go                                            | no        |
+| support for entityless feature views                      | yes       |
+| support for concurrent writing to the same key            | yes       |
+| support for ttl (time to live) at retrieval               | no        |
+| support for deleting expired data                         | no        |
+| collocated by feature view                                | yes       |
+| collocated by feature service                             | no        |
+| collocated by entity key                                  | no        |
+
+To compare this set of functionality against other online stores, please see the full [functionality matrix](overview.md#functionality-matrix).
+

sdk/python/docs/source/feast.infra.online_stores.contrib.couchbase_online_store.rst

@@ -0,0 +1,21 @@
+feast.infra.online\_stores.contrib.couchbase\_online\_store package
+===================================================================
+
+Submodules
+----------
+
+feast.infra.online\_stores.contrib.couchbase\_online\_store.couchbase module
+----------------------------------------------------------------------------
+
+.. automodule:: feast.infra.online_stores.contrib.couchbase_online_store.couchbase
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+Module contents
+---------------
+
+.. automodule:: feast.infra.online_stores.contrib.couchbase_online_store
+   :members:
+   :undoc-members:
+   :show-inheritance:

sdk/python/docs/source/feast.infra.online_stores.contrib.rst

@@ -8,6 +8,7 @@ Subpackages
    :maxdepth: 4
 
    feast.infra.online_stores.contrib.cassandra_online_store
+   feast.infra.online_stores.contrib.couchbase_online_store
    feast.infra.online_stores.contrib.hazelcast_online_store
    feast.infra.online_stores.contrib.hbase_online_store
    feast.infra.online_stores.contrib.ikv_online_store
@@ -24,6 +25,14 @@ feast.infra.online\_stores.contrib.cassandra\_repo\_configuration module
    :undoc-members:
    :show-inheritance:
 
+feast.infra.online\_stores.contrib.couchbase\_repo\_configuration module
+------------------------------------------------------------------------
+
+.. automodule:: feast.infra.online_stores.contrib.couchbase_repo_configuration
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 feast.infra.online\_stores.contrib.elasticsearch module
 -------------------------------------------------------
 

sdk/python/docs/source/feast.infra.online_stores.rst

@@ -84,6 +84,14 @@ feast.infra.online\_stores.sqlite module
    :undoc-members:
    :show-inheritance:
 
+feast.infra.online\_stores.vector\_store module
+-----------------------------------------------
+
+.. automodule:: feast.infra.online_stores.vector_store
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 Module contents
 ---------------
 

sdk/python/docs/source/feast.permissions.client.rst

@@ -20,10 +20,10 @@ feast.permissions.client.auth\_client\_manager module
    :undoc-members:
    :show-inheritance:
 
-feast.permissions.client.auth\_client\_manager\_factory module
---------------------------------------------------------------
+feast.permissions.client.client\_auth\_token module
+---------------------------------------------------
 
-.. automodule:: feast.permissions.client.auth_client_manager_factory
+.. automodule:: feast.permissions.client.client_auth_token
    :members:
    :undoc-members:
    :show-inheritance:
@@ -44,6 +44,14 @@ feast.permissions.client.http\_auth\_requests\_wrapper module
    :undoc-members:
    :show-inheritance:
 
+feast.permissions.client.intra\_comm\_authentication\_client\_manager module
+----------------------------------------------------------------------------
+
+.. automodule:: feast.permissions.client.intra_comm_authentication_client_manager
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 feast.permissions.client.kubernetes\_auth\_client\_manager module
 -----------------------------------------------------------------
 

sdk/python/docs/source/feast.protos.feast.core.rst

@@ -244,6 +244,22 @@ feast.protos.feast.core.Policy\_pb2\_grpc module
    :undoc-members:
    :show-inheritance:
 
+feast.protos.feast.core.Project\_pb2 module
+-------------------------------------------
+
+.. automodule:: feast.protos.feast.core.Project_pb2
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+feast.protos.feast.core.Project\_pb2\_grpc module
+-------------------------------------------------
+
+.. automodule:: feast.protos.feast.core.Project_pb2_grpc
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 feast.protos.feast.core.Registry\_pb2 module
 --------------------------------------------
 

sdk/python/docs/source/feast.rst

@@ -28,6 +28,14 @@ feast.aggregation module
    :undoc-members:
    :show-inheritance:
 
+feast.arrow\_error\_handler module
+----------------------------------
+
+.. automodule:: feast.arrow_error_handler
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 feast.base\_feature\_view module
 --------------------------------
 
@@ -196,6 +204,14 @@ feast.flags\_helper module
    :undoc-members:
    :show-inheritance:
 
+feast.grpc\_error\_interceptor module
+-------------------------------------
+
+.. automodule:: feast.grpc_error_interceptor
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 feast.importer module
 ---------------------
 
@@ -244,6 +260,14 @@ feast.online\_response module
    :undoc-members:
    :show-inheritance:
 
+feast.project module
+--------------------
+
+.. automodule:: feast.project
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 feast.project\_metadata module
 ------------------------------
 
@@ -292,6 +316,14 @@ feast.repo\_operations module
    :undoc-members:
    :show-inheritance:
 
+feast.rest\_error\_handler module
+---------------------------------
+
+.. automodule:: feast.rest_error_handler
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 feast.saved\_dataset module
 ---------------------------