Add a Vector Database Service to allow stages to read and write to VD…

…Bs (#1225)

Closes #1177 

## By Submitting this PR I confirm:
- I am familiar with the [Contributing Guidelines](https://github.com/nv-morpheus/Morpheus/blob/main/docs/source/developer_guide/contributing.md).
- When the PR is ready for review, new or existing tests cover these changes.
- When the PR is ready for review, the documentation is up to date with these changes.

Authors:
  - Bhargav Suryadevara (https://github.com/bsuryadevara)

Approvers:
  - Michael Demoret (https://github.com/mdemoret-nv)

URL: #1225

docker/conda/environments/cuda11.8_dev.yml

@@ -110,3 +110,5 @@ dependencies:
         # Add additional dev dependencies here
         - databricks-connect
         - pytest-kafka==0.6.0
+        - pymilvus==2.3.1
+        - milvus

docs/source/conf.py

@@ -169,6 +169,7 @@
     "morpheus.cli.commands",  # Dont document the CLI in Sphinx
     "nvtabular",
     "pandas",
+    "pymilvus",
     "tensorrt",
     "torch",
     "tqdm",

morpheus/service/__init__.py

@@ -0,0 +1,13 @@
+# Copyright (c) 2023, NVIDIA CORPORATION.
+#
+# Licensed 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.

morpheus/service/milvus_client.py

@@ -0,0 +1,268 @@
+# Copyright (c) 2023, NVIDIA CORPORATION.
+#
+# Licensed 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 typing
+
+from pymilvus import Collection
+from pymilvus import DataType
+from pymilvus import MilvusClient as PyMilvusClient
+from pymilvus.orm.mutation import MutationResult
+
+# Milvus data type mapping dictionary
+MILVUS_DATA_TYPE_MAP = {
+    "int8": DataType.INT8,
+    "int16": DataType.INT16,
+    "int32": DataType.INT32,
+    "int64": DataType.INT64,
+    "bool": DataType.BOOL,
+    "float": DataType.FLOAT,
+    "double": DataType.DOUBLE,
+    "binary_vector": DataType.BINARY_VECTOR,
+    "float_vector": DataType.FLOAT_VECTOR,
+    "string": DataType.STRING,
+    "varchar": DataType.VARCHAR,
+    "json": DataType.JSON,
+}
+
+
+def handle_exceptions(func_name: str, error_message: str) -> typing.Callable:
+    """
+    Decorator function to handle exceptions and log errors.
+
+    Parameters
+    ----------
+    func_name : str
+        Name of the func being decorated.
+    error_message : str
+        Error message to log in case of an exception.
+
+    Returns
+    -------
+    typing.Callable
+        Decorated function.
+    """
+
+    def decorator(func):
+
+        def wrapper(*args, **kwargs):
+            try:
+                return func(*args, **kwargs)
+            except Exception as ex:
+                raise RuntimeError(f"{error_message} - Failed to execute {func_name}") from ex
+
+        return wrapper
+
+    return decorator
+
+
+class MilvusClient(PyMilvusClient):
+    """
+    Extension of the `MilvusClient` class with custom functions.
+
+    Parameters
+    ----------
+    uri : str
+        URI for connecting to Milvus server.
+    user : str
+        User name for authentication.
+    password : str
+        Password for authentication.
+    db_name : str
+        Name of the Milvus database.
+    token : str
+        Token for authentication.
+    **kwargs : dict[str, typing.Any]
+        Additional keyword arguments for the MilvusClient constructor.
+    """
+
+    def __init__(self, uri: str, user: str, password: str, db_name: str, token: str, **kwargs: dict[str, typing.Any]):
+        super().__init__(uri=uri, user=user, password=password, db_name=db_name, token=token, **kwargs)
+
+    @handle_exceptions("has_collection", "Error checking collection existence")
+    def has_collection(self, collection_name: str) -> bool:
+        """
+        Check if a collection exists in the database.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection to check.
+
+        Returns
+        -------
+        bool
+            True if the collection exists, False otherwise.
+        """
+        conn = self._get_connection()
+        return conn.has_collection(collection_name)
+
+    @handle_exceptions("create_partition", "Error creating partition")
+    def create_partition(self, collection_name: str, partition_name: str, timeout: float = 1.0) -> None:
+        """
+        Create a partition within a collection.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection.
+        partition_name : str
+            Name of the partition to create.
+        timeout : float, optional
+            Timeout for the operation in seconds (default is 1.0).
+        """
+        conn = self._get_connection()
+        conn.create_partition(collection_name=collection_name, partition_name=partition_name, timeout=timeout)
+
+    @handle_exceptions("load_collection", "Error loading collection")
+    def load_collection(self, collection_name: str) -> None:
+        """
+        Load a collection into memory.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection to load.
+        """
+        conn = self._get_connection()
+        conn.load_collection(collection_name=collection_name)
+
+    @handle_exceptions("release_collection", "Error releasing collection")
+    def release_collection(self, collection_name: str) -> None:
+        """
+        Release a loaded collection from memory.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection to release.
+        """
+        conn = self._get_connection()
+        conn.release_collection(collection_name=collection_name)
+
+    @handle_exceptions("upsert", "Error upserting collection entities")
+    def upsert(self, collection_name: str, entities: list, **kwargs: dict[str, typing.Any]) -> MutationResult:
+        """
+        Upsert entities into a collection.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection to upsert into.
+        entities : list
+            List of entities to upsert.
+        **kwargs : dict[str, typing.Any]
+            Additional keyword arguments for the upsert operation.
+
+        Returns
+        -------
+        MutationResult
+            Result of the upsert operation.
+        """
+        conn = self._get_connection()
+        return conn.upsert(collection_name=collection_name, entities=entities, **kwargs)
+
+    @handle_exceptions("delete_by_expr", "Error deleting collection entities")
+    def delete_by_expr(self, collection_name: str, expression: str, **kwargs: dict[str, typing.Any]) -> MutationResult:
+        """
+        Delete entities from a collection using an expression.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection to delete from.
+        expression : str
+            Deletion expression.
+        **kwargs : dict[str, typing.Any]
+            Additional keyword arguments for the delete operation.
+
+        Returns
+        -------
+        MutationResult
+            Returns result of delete operation.
+        """
+        conn = self._get_connection()
+        return conn.delete(collection_name=collection_name, expression=expression, **kwargs)
+
+    @handle_exceptions("has_partition", "Error checking partition existence")
+    def has_partition(self, collection_name: str, partition_name: str) -> bool:
+        """
+        Check if a partition exists within a collection.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection.
+        partition_name : str
+            Name of the partition to check.
+
+        Returns
+        -------
+        bool
+            True if the partition exists, False otherwise.
+        """
+        conn = self._get_connection()
+        return conn.has_partition(collection_name=collection_name, partition_name=partition_name)
+
+    @handle_exceptions("drop_partition", "Error dropping partition")
+    def drop_partition(self, collection_name: str, partition_name: str) -> None:
+        """
+        Drop a partition from a collection.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection.
+        partition_name : str
+            Name of the partition to drop.
+        """
+        conn = self._get_connection()
+        conn.drop_partition(collection_name=collection_name, partition_name=partition_name)
+
+    @handle_exceptions("drop_index", "Error dropping index")
+    def drop_index(self, collection_name: str, field_name: str, index_name: str) -> None:
+        """
+        Drop an index from a collection.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection.
+        field_name : str
+            Name of the field associated with the index.
+        index_name : str
+            Name of the index to drop.
+        """
+        conn = self._get_connection()
+        conn.drop_index(collection_name=collection_name, field_name=field_name, index_name=index_name)
+
+    @handle_exceptions("get_collection", "Error getting collection object")
+    def get_collection(self, collection_name: str, **kwargs: dict[str, typing.Any]) -> Collection:
+        """
+        Returns `Collection` object associated with the given collection name.
+
+        Parameters
+        ----------
+        collection_name : str
+            Name of the collection to delete from.
+        **kwargs : dict[str, typing.Any]
+            Additional keyword arguments to get Collection instance.
+
+        Returns
+        -------
+        Collection
+            Returns pymilvus Collection instance.
+        """
+        collection = Collection(name=collection_name, using=self._using, **kwargs)
+
+        return collection