partners/openai + community: Async Azure AD token provider support for Azure OpenAI (#27488)

This PR introduces a new `azure_ad_async_token_provider` attribute to
the `AzureOpenAI` and `AzureChatOpenAI` classes in `partners/openai` and
`community` packages, given it's currently supported on `openai` package
as
[AsyncAzureADTokenProvider](https://github.com/openai/openai-python/blob/main/src/openai/lib/azure.py#L33)
type.

The reason for creating a new attribute is to avoid breaking changes.
Let's say you have an existing code that uses a `AzureOpenAI` or
`AzureChatOpenAI` instance to perform both sync and async operations.
The `azure_ad_token_provider` will work exactly as it is today, while
`azure_ad_async_token_provider` will override it for async requests.


If no one reviews your PR within a few days, please @-mention one of
baskaryan, efriis, eyurtsev, ccurme, vbarda, hwchase17.

libs/community/langchain_community/chat_models/azure_openai.py

@@ -5,7 +5,7 @@ from __future__ import annotations
 import logging
 import os
 import warnings
-from typing import Any, Callable, Dict, List, Union
+from typing import Any, Awaitable, Callable, Dict, List, Union
 
 from langchain_core._api.deprecation import deprecated
 from langchain_core.outputs import ChatResult
@@ -90,7 +90,13 @@ class AzureChatOpenAI(ChatOpenAI):
     azure_ad_token_provider: Union[Callable[[], str], None] = None
     """A function that returns an Azure Active Directory token.
         
-        Will be invoked on every request.
+        Will be invoked on every sync request. For async requests,
+        will be invoked if `azure_ad_async_token_provider` is not provided.
+    """
+    azure_ad_async_token_provider: Union[Callable[[], Awaitable[str]], None] = None
+    """A function that returns an Azure Active Directory token.
+
+        Will be invoked on every async request.
     """
     model_version: str = ""
     """Legacy, for openai<1.0.0 support."""
@@ -208,6 +214,12 @@ class AzureChatOpenAI(ChatOpenAI):
                 "http_client": values["http_client"],
             }
             values["client"] = openai.AzureOpenAI(**client_params).chat.completions
+
+            azure_ad_async_token_provider = values["azure_ad_async_token_provider"]
+
+            if azure_ad_async_token_provider:
+                client_params["azure_ad_token_provider"] = azure_ad_async_token_provider
+
             values["async_client"] = openai.AsyncAzureOpenAI(
                 **client_params
             ).chat.completions

libs/community/langchain_community/embeddings/azure_openai.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 import os
 import warnings
-from typing import Any, Callable, Dict, Optional, Union
+from typing import Any, Awaitable, Callable, Dict, Optional, Union
 
 from langchain_core._api.deprecation import deprecated
 from langchain_core.utils import get_from_dict_or_env
@@ -49,7 +49,13 @@ class AzureOpenAIEmbeddings(OpenAIEmbeddings):
     azure_ad_token_provider: Union[Callable[[], str], None] = None
     """A function that returns an Azure Active Directory token.
 
-        Will be invoked on every request.
+        Will be invoked on every sync request. For async requests,
+        will be invoked if `azure_ad_async_token_provider` is not provided.
+    """
+    azure_ad_async_token_provider: Union[Callable[[], Awaitable[str]], None] = None
+    """A function that returns an Azure Active Directory token.
+
+        Will be invoked on every async request.
     """
     openai_api_version: Optional[str] = Field(default=None, alias="api_version")
     """Automatically inferred from env var `OPENAI_API_VERSION` if not provided."""
@@ -162,6 +168,12 @@ class AzureOpenAIEmbeddings(OpenAIEmbeddings):
                 "http_client": self.http_client,
             }
             self.client = openai.AzureOpenAI(**client_params).embeddings
+
+            if self.azure_ad_async_token_provider:
+                client_params["azure_ad_token_provider"] = (
+                    self.azure_ad_async_token_provider
+                )
+
             self.async_client = openai.AsyncAzureOpenAI(**client_params).embeddings
         else:
             self.client = openai.Embedding

libs/community/langchain_community/llms/openai.py

@@ -8,6 +8,7 @@ from typing import (
     AbstractSet,
     Any,
     AsyncIterator,
+    Awaitable,
     Callable,
     Collection,
     Dict,
@@ -804,7 +805,13 @@ class AzureOpenAI(BaseOpenAI):
     azure_ad_token_provider: Union[Callable[[], str], None] = None
     """A function that returns an Azure Active Directory token.
 
-        Will be invoked on every request.
+        Will be invoked on every sync request. For async requests,
+        will be invoked if `azure_ad_async_token_provider` is not provided.
+    """
+    azure_ad_async_token_provider: Union[Callable[[], Awaitable[str]], None] = None
+    """A function that returns an Azure Active Directory token.
+
+        Will be invoked on every async request.
     """
     openai_api_type: str = ""
     """Legacy, for openai<1.0.0 support."""
@@ -922,6 +929,12 @@ class AzureOpenAI(BaseOpenAI):
                 "http_client": values["http_client"],
             }
             values["client"] = openai.AzureOpenAI(**client_params).completions
+
+            azure_ad_async_token_provider = values["azure_ad_async_token_provider"]
+
+            if azure_ad_async_token_provider:
+                client_params["azure_ad_token_provider"] = azure_ad_async_token_provider
+
             values["async_client"] = openai.AsyncAzureOpenAI(
                 **client_params
             ).completions

libs/partners/openai/langchain_openai/chat_models/azure.py

@@ -4,7 +4,18 @@ from __future__ import annotations
 
 import logging
 import os
-from typing import Any, Callable, Dict, List, Optional, Type, TypedDict, TypeVar, Union
+from typing import (
+    Any,
+    Awaitable,
+    Callable,
+    Dict,
+    List,
+    Optional,
+    Type,
+    TypedDict,
+    TypeVar,
+    Union,
+)
 
 import openai
 from langchain_core.language_models.chat_models import LangSmithParams
@@ -494,7 +505,14 @@ class AzureChatOpenAI(BaseChatOpenAI):
     azure_ad_token_provider: Union[Callable[[], str], None] = None
     """A function that returns an Azure Active Directory token.
         
-        Will be invoked on every request.
+        Will be invoked on every sync request. For async requests,
+        will be invoked if `azure_ad_async_token_provider` is not provided.
+    """
+
+    azure_ad_async_token_provider: Union[Callable[[], Awaitable[str]], None] = None
+    """A function that returns an Azure Active Directory token.
+        
+        Will be invoked on every async request.
     """
 
     model_version: str = ""
@@ -633,6 +651,12 @@ class AzureChatOpenAI(BaseChatOpenAI):
             self.client = self.root_client.chat.completions
         if not self.async_client:
             async_specific = {"http_client": self.http_async_client}
+
+            if self.azure_ad_async_token_provider:
+                client_params["azure_ad_token_provider"] = (
+                    self.azure_ad_async_token_provider
+                )
+
             self.root_async_client = openai.AsyncAzureOpenAI(
                 **client_params,
                 **async_specific,  # type: ignore[arg-type]

libs/partners/openai/langchain_openai/embeddings/azure.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from typing import Callable, Optional, Union
+from typing import Awaitable, Callable, Optional, Union
 
 import openai
 from langchain_core.utils import from_env, secret_from_env
@@ -146,7 +146,13 @@ class AzureOpenAIEmbeddings(OpenAIEmbeddings):
     azure_ad_token_provider: Union[Callable[[], str], None] = None
     """A function that returns an Azure Active Directory token.
 
-        Will be invoked on every request.
+        Will be invoked on every sync request. For async requests,
+        will be invoked if `azure_ad_async_token_provider` is not provided.
+    """
+    azure_ad_async_token_provider: Union[Callable[[], Awaitable[str]], None] = None
+    """A function that returns an Azure Active Directory token.
+
+        Will be invoked on every async request.
     """
     openai_api_type: Optional[str] = Field(
         default_factory=from_env("OPENAI_API_TYPE", default="azure")
@@ -203,6 +209,12 @@ class AzureOpenAIEmbeddings(OpenAIEmbeddings):
             ).embeddings
         if not self.async_client:
             async_specific: dict = {"http_client": self.http_async_client}
+
+            if self.azure_ad_async_token_provider:
+                client_params["azure_ad_token_provider"] = (
+                    self.azure_ad_async_token_provider
+                )
+
             self.async_client = openai.AsyncAzureOpenAI(
                 **client_params,  # type: ignore[arg-type]
                 **async_specific,

libs/partners/openai/langchain_openai/llms/azure.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import logging
-from typing import Any, Callable, Dict, List, Mapping, Optional, Union
+from typing import Any, Awaitable, Callable, Dict, List, Mapping, Optional, Union
 
 import openai
 from langchain_core.language_models import LangSmithParams
@@ -73,7 +73,13 @@ class AzureOpenAI(BaseOpenAI):
     azure_ad_token_provider: Union[Callable[[], str], None] = None
     """A function that returns an Azure Active Directory token.
 
-        Will be invoked on every request.
+        Will be invoked on every sync request. For async requests,
+        will be invoked if `azure_ad_async_token_provider` is not provided.
+    """
+    azure_ad_async_token_provider: Union[Callable[[], Awaitable[str]], None] = None
+    """A function that returns an Azure Active Directory token.
+
+        Will be invoked on every async request.
     """
     openai_api_type: Optional[str] = Field(
         default_factory=from_env("OPENAI_API_TYPE", default="azure")
@@ -158,6 +164,12 @@ class AzureOpenAI(BaseOpenAI):
             ).completions
         if not self.async_client:
             async_specific = {"http_client": self.http_async_client}
+
+            if self.azure_ad_async_token_provider:
+                client_params["azure_ad_token_provider"] = (
+                    self.azure_ad_async_token_provider
+                )
+
             self.async_client = openai.AsyncAzureOpenAI(
                 **client_params,
                 **async_specific,  # type: ignore[arg-type]