voyageai[patch]: Upgrade root validators for pydantic 2 (#25455)

Update @root_validators to be consistent with pydantic 2 semantics

libs/partners/voyageai/langchain_voyageai/embeddings.py

@@ -1,5 +1,4 @@
 import logging
-import os
 from typing import Iterable, List, Optional
 
 import voyageai  # type: ignore
@@ -10,7 +9,7 @@ from langchain_core.pydantic_v1 import (
     SecretStr,
     root_validator,
 )
-from langchain_core.utils import convert_to_secret_str
+from langchain_core.utils import secret_from_env
 
 logger = logging.getLogger(__name__)
 
@@ -32,34 +31,32 @@ class VoyageAIEmbeddings(BaseModel, Embeddings):
     batch_size: int
     show_progress_bar: bool = False
     truncation: Optional[bool] = None
-    voyage_api_key: Optional[SecretStr] = None
+    voyage_api_key: SecretStr = Field(
+        alias="api_key",
+        default_factory=secret_from_env(
+            "VOYAGE_API_KEY",
+            error_message="Must set `VOYAGE_API_KEY` environment variable or "
+            "pass `api_key` to VoyageAIEmbeddings constructor.",
+        ),
+    )
 
     class Config:
         extra = "forbid"
+        allow_population_by_field_name = True
 
     @root_validator(pre=True)
     def default_values(cls, values: dict) -> dict:
         """Set default batch size based on model"""
-
         model = values.get("model")
         batch_size = values.get("batch_size")
         if batch_size is None:
             values["batch_size"] = 72 if model in ["voyage-2", "voyage-02"] else 7
         return values
 
-    @root_validator()
+    @root_validator(pre=False, skip_on_failure=True)
     def validate_environment(cls, values: dict) -> dict:
         """Validate that VoyageAI credentials exist in environment."""
-        voyage_api_key = values.get("voyage_api_key") or os.getenv(
+        api_key_str = values["voyage_api_key"].get_secret_value()
-            "VOYAGE_API_KEY", None
-        )
-        if voyage_api_key:
-            api_key_secretstr = convert_to_secret_str(voyage_api_key)
-            values["voyage_api_key"] = api_key_secretstr
-
-            api_key_str = api_key_secretstr.get_secret_value()
-        else:
-            api_key_str = None
         values["_client"] = voyageai.Client(api_key=api_key_str)
         values["_aclient"] = voyageai.client_async.AsyncClient(api_key=api_key_str)
         return values

libs/partners/voyageai/tests/unit_tests/test_embeddings.py

@@ -9,6 +9,17 @@ MODEL = "voyage-2"
 
 def test_initialization_voyage_2() -> None:
     """Test embedding model initialization."""
+    emb = VoyageAIEmbeddings(api_key="NOT_A_VALID_KEY", model=MODEL)
+    assert isinstance(emb, Embeddings)
+    assert emb.batch_size == 72
+    assert emb.model == MODEL
+    assert emb._client is not None
+
+
+def test_initialization_voyage_2_with_full_api_key_name() -> None:
+    """Test embedding model initialization."""
+    # Testing that we can initialize the model using `voyage_api_key`
+    # instead of `api_key`
     emb = VoyageAIEmbeddings(voyage_api_key="NOT_A_VALID_KEY", model=MODEL)
     assert isinstance(emb, Embeddings)
     assert emb.batch_size == 72
@@ -18,7 +29,7 @@ def test_initialization_voyage_2() -> None:
 
 def test_initialization_voyage_1() -> None:
     """Test embedding model initialization."""
-    emb = VoyageAIEmbeddings(voyage_api_key="NOT_A_VALID_KEY", model="voyage-01")
+    emb = VoyageAIEmbeddings(api_key="NOT_A_VALID_KEY", model="voyage-01")
     assert isinstance(emb, Embeddings)
     assert emb.batch_size == 7
     assert emb.model == "voyage-01"
@@ -28,7 +39,7 @@ def test_initialization_voyage_1() -> None:
 def test_initialization_voyage_1_batch_size() -> None:
     """Test embedding model initialization."""
     emb = VoyageAIEmbeddings(
-        voyage_api_key="NOT_A_VALID_KEY", model="voyage-01", batch_size=15
+        api_key="NOT_A_VALID_KEY", model="voyage-01", batch_size=15
     )
     assert isinstance(emb, Embeddings)
     assert emb.batch_size == 15