Adding async support for AWSSigV4 (opensearch-project#254)

* Adding async support for AWSSigV4

Signed-off-by: Harsha Vamsi Kalluri <harshavamsi096@gmail.com>

* Fix names for connection classes

Signed-off-by: Harsha Vamsi Kalluri <harshavamsi096@gmail.com>

* Update tests to async name space

Signed-off-by: Harsha Vamsi Kalluri <harshavamsi096@gmail.com>

* Add import exceptions to python < 3.6

Signed-off-by: Harsha Vamsi Kalluri <harshavamsi096@gmail.com>

Signed-off-by: Harsha Vamsi Kalluri <harshavamsi096@gmail.com>

Author: harshavamsi

CHANGELOG.md

@@ -9,6 +9,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Added overload decorators to helpers-actions.pyi-"bulk" ([#239](https://github.com/opensearch-project/opensearch-py/pull/239))
 - Document Keberos authenticaion ([214](https://github.com/opensearch-project/opensearch-py/pull/214))
 - Add release workflows ([#240](https://github.com/opensearch-project/opensearch-py/pull/240))
+- Added SigV4 support for Async Opensearch Client ([#254](https://github.com/opensearch-project/opensearch-py/pull/254))
 ### Changed
 - Updated getting started to user guide ([#233](https://github.com/opensearch-project/opensearch-py/pull/233))
 - Updated CA certificate handling to check OpenSSL environment variables before defaulting to certifi ([#196](https://github.com/opensearch-project/opensearch-py/pull/196))

USER_GUIDE.md

@@ -1,4 +1,4 @@
-- [User guide of OpenSearch Python Client](#user-guide-of-opensearch-python-client)
+- [User guide of OpenSearch Python client](#user-guide-of-opensearch-python-client)
   - [Setup](#setup)
   - [Example](#example)
     - [Creating a client](#creating-a-client)
@@ -9,8 +9,8 @@
     - [Searching for a document](#searching-for-a-document)
     - [Deleting a document](#deleting-a-document)
     - [Deleting an index](#deleting-an-index)
-  - [Making API Calls](#making-api-calls)
-    - [Point in Time API](#point-in-time-api)
+  - [Making API calls](#making-api-calls)
+    - [Point in time API](#point-in-time-api)
   - [Using plugins](#using-plugins)
     - [Alerting plugin](#alerting-plugin)
       - [**Searching for monitors**](#searching-for-monitors)
@@ -22,6 +22,7 @@
   - [Using different authentication methods](#using-different-authentication-methods)
     - [Using IAM credentials](#using-iam-credentials)
       - [Pre-requisites to use `AWSV4SignerAuth`](#pre-requisites-to-use-awsv4signerauth)
+  - [Using IAM authentication with an async client](#using-iam-authentication-with-an-async-client)
     - [Using Kerberos](#using-kerberos)
 
 # User guide of OpenSearch Python client
@@ -439,6 +440,51 @@ print('\nSearch results:')
 print(response)
 ```
 
+## Using IAM authentication with an async client
+
+Make sure to use the `AsyncHttpConnection` connection class with the async `AWSV4SignerAsyncAuth` signer.
+
+```python
+from opensearchpy import OpenSearch, AsyncHttpConnection, AWSV4SignerAsyncAuth
+import boto3
+
+host = '' # cluster endpoint, for example: my-test-domain.us-east-1.es.amazonaws.com
+region = 'us-west-2'
+credentials = boto3.Session().get_credentials()
+auth = AWSV4SignerAsyncAuth(credentials, region)
+index_name = 'python-test-index3'
+
+client = OpenSearch(
+    hosts = [{'host': host, 'port': 443}],
+    http_auth = auth,
+    use_ssl = True,
+    verify_certs = True,
+    connection_class = AsyncHttpConnection
+)
+
+async def search():
+  q = 'miller'
+  query = {
+    'size': 5,
+    'query': {
+      'multi_match': {
+        'query': q,
+        'fields': ['title^2', 'director']
+      }
+    }
+  }
+
+  response = await client.search(
+      body = query,
+      index = index_name
+  )
+
+  print('\nSearch results:')
+  print(response)
+
+search()
+```
+=======
 ### Using Kerberos
 
 There are several python packages that provide Kerberos support over HTTP connections, such as [requests-kerberos](http://pypi.org/project/requests-kerberos) and [requests-gssapi](https://pypi.org/project/requests-gssapi). The following example shows how to setup the authentication. Note that some of the parameters, such as `mutual_authentication` might depend on the server settings.

opensearchpy/__init__.py

@@ -62,7 +62,7 @@
     SSLError,
     TransportError,
 )
-from .helpers import AWSV4SignerAuth
+from .helpers import AWSV4SignerAsyncAuth, AWSV4SignerAuth
 from .serializer import JSONSerializer
 from .transport import Transport
 
@@ -79,6 +79,7 @@
     "JSONSerializer",
     "Connection",
     "RequestsHttpConnection",
+    "AsyncHttpConnection",
     "Urllib3HttpConnection",
     "ImproperlyConfigured",
     "OpenSearchException",
@@ -95,6 +96,7 @@
     "OpenSearchWarning",
     "OpenSearchDeprecationWarning",
     "AWSV4SignerAuth",
+    "AWSV4SignerAsyncAuth",
 ]
 
 try:
@@ -105,12 +107,14 @@
     from ._async.client import AsyncOpenSearch
     from ._async.http_aiohttp import AIOHttpConnection, AsyncConnection
     from ._async.transport import AsyncTransport
+    from .connection import AsyncHttpConnection
 
     __all__ += [
         "AIOHttpConnection",
         "AsyncConnection",
         "AsyncTransport",
         "AsyncOpenSearch",
+        "AsyncHttpConnection",
     ]
 except (ImportError, SyntaxError):
     pass

opensearchpy/__init__.pyi

@@ -28,6 +28,7 @@ import sys
 from typing import Tuple
 
 from .client import OpenSearch as OpenSearch
+from .connection import AsyncHttpConnection as AsyncHttpConnection
 from .connection import Connection as Connection
 from .connection import RequestsHttpConnection as RequestsHttpConnection
 from .connection import Urllib3HttpConnection as Urllib3HttpConnection
@@ -57,6 +58,7 @@ try:
     from ._async.client import AsyncOpenSearch as AsyncOpenSearch
     from ._async.http_aiohttp import AIOHttpConnection as AIOHttpConnection
     from ._async.transport import AsyncTransport as AsyncTransport
+    from .helpers import AWSV4SignerAsyncAuth as AWSV4SignerAsyncAuth
     from .helpers import AWSV4SignerAuth as AWSV4SignerAuth
 except (ImportError, SyntaxError):
     pass

opensearchpy/connection/__init__.py

@@ -25,6 +25,8 @@
 #  under the License.
 
 
+import sys
+
 from .base import Connection
 from .http_requests import RequestsHttpConnection
 from .http_urllib3 import Urllib3HttpConnection, create_ssl_context
@@ -35,3 +37,16 @@
     "Urllib3HttpConnection",
     "create_ssl_context",
 ]
+
+try:
+    # Asyncio only supported on Python 3.6+
+    if sys.version_info < (3, 6):
+        raise ImportError
+
+    from .http_async import AsyncHttpConnection
+
+    __all__ += [
+        "AsyncHttpConnection",
+    ]
+except (ImportError, SyntaxError):
+    pass

opensearchpy/connection/__init__.pyi

@@ -25,6 +25,7 @@
 #  under the License.
 
 from .base import Connection as Connection
+from .http_async import AsyncHttpConnection as AsyncHttpConnection
 from .http_requests import RequestsHttpConnection as RequestsHttpConnection
 from .http_urllib3 import Urllib3HttpConnection as Urllib3HttpConnection
 from .http_urllib3 import create_ssl_context as create_ssl_context