fireworks[major]: switch to pydantic v2 (#26004)

libs/partners/fireworks/langchain_fireworks/chat_models.py

@@ -68,12 +68,6 @@ from langchain_core.output_parsers.openai_tools import (
     parse_tool_call,
 )
 from langchain_core.outputs import ChatGeneration, ChatGenerationChunk, ChatResult
-from langchain_core.pydantic_v1 import (
-    BaseModel,
-    Field,
-    SecretStr,
-    root_validator,
-)
 from langchain_core.runnables import Runnable, RunnableMap, RunnablePassthrough
 from langchain_core.tools import BaseTool
 from langchain_core.utils import (
@@ -85,6 +79,14 @@ from langchain_core.utils.function_calling import (
 )
 from langchain_core.utils.pydantic import is_basemodel_subclass
 from langchain_core.utils.utils import build_extra_kwargs, from_env, secret_from_env
+from pydantic import (
+    BaseModel,
+    ConfigDict,
+    Field,
+    SecretStr,
+    model_validator,
+)
+from typing_extensions import Self
 
 logger = logging.getLogger(__name__)
 
@@ -354,13 +356,13 @@ class ChatFireworks(BaseChatModel):
     max_retries: Optional[int] = None
     """Maximum number of retries to make when generating."""
 
-    class Config:
+    model_config = ConfigDict(
-        """Configuration for this pydantic object."""
+        populate_by_name=True,
+    )
 
-        allow_population_by_field_name = True
+    @model_validator(mode="before")
-
+    @classmethod
-    @root_validator(pre=True)
+    def build_extra(cls, values: Dict[str, Any]) -> Any:
-    def build_extra(cls, values: Dict[str, Any]) -> Dict[str, Any]:
         """Build extra kwargs from additional params that were passed in."""
         all_required_field_names = get_pydantic_field_names(cls)
         extra = values.get("model_kwargs", {})
@@ -369,32 +371,32 @@ class ChatFireworks(BaseChatModel):
         )
         return values
 
-    @root_validator(pre=False, skip_on_failure=True)
+    @model_validator(mode="after")
-    def validate_environment(cls, values: Dict) -> Dict:
+    def validate_environment(self) -> Self:
         """Validate that api key and python package exists in environment."""
-        if values["n"] < 1:
+        if self.n < 1:
             raise ValueError("n must be at least 1.")
-        if values["n"] > 1 and values["streaming"]:
+        if self.n > 1 and self.streaming:
             raise ValueError("n must be 1 when streaming.")
 
         client_params = {
             "api_key": (
-                values["fireworks_api_key"].get_secret_value()
+                self.fireworks_api_key.get_secret_value()
-                if values["fireworks_api_key"]
+                if self.fireworks_api_key
                 else None
             ),
-            "base_url": values["fireworks_api_base"],
+            "base_url": self.fireworks_api_base,
-            "timeout": values["request_timeout"],
+            "timeout": self.request_timeout,
         }
 
-        if not values.get("client"):
+        if not self.client:
-            values["client"] = Fireworks(**client_params).chat.completions
+            self.client = Fireworks(**client_params).chat.completions
-        if not values.get("async_client"):
+        if not self.async_client:
-            values["async_client"] = AsyncFireworks(**client_params).chat.completions
+            self.async_client = AsyncFireworks(**client_params).chat.completions
-        if values["max_retries"]:
+        if self.max_retries:
-            values["client"]._max_retries = values["max_retries"]
+            self.client._max_retries = self.max_retries
-            values["async_client"]._max_retries = values["max_retries"]
+            self.async_client._max_retries = self.max_retries
-        return values
+        return self
 
     @property
     def _default_params(self) -> Dict[str, Any]:
@@ -803,7 +805,7 @@ class ChatFireworks(BaseChatModel):
                 from typing import Optional
 
                 from langchain_fireworks import ChatFireworks
-                from langchain_core.pydantic_v1 import BaseModel, Field
+                from pydantic import BaseModel, Field
 
 
                 class AnswerWithJustification(BaseModel):
@@ -834,7 +836,7 @@ class ChatFireworks(BaseChatModel):
             .. code-block:: python
 
                 from langchain_fireworks import ChatFireworks
-                from langchain_core.pydantic_v1 import BaseModel
+                from pydantic import BaseModel
 
 
                 class AnswerWithJustification(BaseModel):
@@ -921,7 +923,7 @@ class ChatFireworks(BaseChatModel):
             .. code-block::
 
                 from langchain_fireworks import ChatFireworks
-                from langchain_core.pydantic_v1 import BaseModel
+                from pydantic import BaseModel
 
                 class AnswerWithJustification(BaseModel):
                     answer: str

libs/partners/fireworks/langchain_fireworks/embeddings.py

@@ -1,9 +1,12 @@
-from typing import Any, Dict, List
+from typing import List
 
 from langchain_core.embeddings import Embeddings
-from langchain_core.pydantic_v1 import BaseModel, Field, SecretStr, root_validator
 from langchain_core.utils import secret_from_env
-from openai import OpenAI  # type: ignore
+from openai import OpenAI
+from pydantic import BaseModel, ConfigDict, Field, SecretStr, model_validator
+from typing_extensions import Self
+
+# type: ignore
 
 
 class FireworksEmbeddings(BaseModel, Embeddings):
@@ -65,7 +68,7 @@ class FireworksEmbeddings(BaseModel, Embeddings):
              [-0.024603435769677162, -0.007543657906353474, 0.0039630369283258915]
     """
 
-    _client: OpenAI = Field(default=None)
+    client: OpenAI = Field(default=None, exclude=True)  #: :meta private:
     fireworks_api_key: SecretStr = Field(
         alias="api_key",
         default_factory=secret_from_env(
@@ -79,20 +82,25 @@ class FireworksEmbeddings(BaseModel, Embeddings):
     """
     model: str = "nomic-ai/nomic-embed-text-v1.5"
 
-    @root_validator(pre=False, skip_on_failure=True)
+    model_config = ConfigDict(
-    def validate_environment(cls, values: Dict[str, Any]) -> Dict[str, Any]:
+        populate_by_name=True,
+        arbitrary_types_allowed=True,
+    )
+
+    @model_validator(mode="after")
+    def validate_environment(self) -> Self:
         """Validate environment variables."""
-        values["_client"] = OpenAI(
+        self.client = OpenAI(
-            api_key=values["fireworks_api_key"].get_secret_value(),
+            api_key=self.fireworks_api_key.get_secret_value(),
             base_url="https://api.fireworks.ai/inference/v1",
         )
-        return values
+        return self
 
     def embed_documents(self, texts: List[str]) -> List[List[float]]:
         """Embed search docs."""
         return [
             i.embedding
-            for i in self._client.embeddings.create(input=texts, model=self.model).data
+            for i in self.client.embeddings.create(input=texts, model=self.model).data
         ]
 
     def embed_query(self, text: str) -> List[float]:

libs/partners/fireworks/langchain_fireworks/llms.py

@@ -10,13 +10,9 @@ from langchain_core.callbacks import (
     CallbackManagerForLLMRun,
 )
 from langchain_core.language_models.llms import LLM
-from langchain_core.pydantic_v1 import Field, SecretStr, root_validator
+from langchain_core.utils import get_pydantic_field_names
-from langchain_core.utils import (
+from langchain_core.utils.utils import build_extra_kwargs, secret_from_env
-    convert_to_secret_str,
+from pydantic import ConfigDict, Field, SecretStr, model_validator
-    get_from_dict_or_env,
-    get_pydantic_field_names,
-)
-from langchain_core.utils.utils import build_extra_kwargs
 
 from langchain_fireworks.version import __version__
 
@@ -39,8 +35,21 @@ class Fireworks(LLM):
 
     base_url: str = "https://api.fireworks.ai/inference/v1/completions"
     """Base inference API URL."""
-    fireworks_api_key: SecretStr = Field(default=None, alias="api_key")
+    fireworks_api_key: SecretStr = Field(
-    """Fireworks AI API key. Get it here: https://fireworks.ai"""
+        alias="api_key",
+        default_factory=secret_from_env(
+            "FIREWORKS_API_KEY",
+            error_message=(
+                "You must specify an api key. "
+                "You can pass it an argument as `api_key=...` or "
+                "set the environment variable `FIREWORKS_API_KEY`."
+            ),
+        ),
+    )
+    """Fireworks API key.
+    
+    Automatically read from env variable `FIREWORKS_API_KEY` if not provided.
+    """
     model: str
     """Model name. Available models listed here: 
         https://readme.fireworks.ai/
@@ -74,14 +83,14 @@ class Fireworks(LLM):
         the response for each token generation step.
     """
 
-    class Config:
+    model_config = ConfigDict(
-        """Configuration for this pydantic object."""
+        extra="forbid",
+        populate_by_name=True,
+    )
 
-        extra = "forbid"
+    @model_validator(mode="before")
-        allow_population_by_field_name = True
+    @classmethod
-
+    def build_extra(cls, values: Dict[str, Any]) -> Any:
-    @root_validator(pre=True)
-    def build_extra(cls, values: Dict[str, Any]) -> Dict[str, Any]:
         """Build extra kwargs from additional params that were passed in."""
         all_required_field_names = get_pydantic_field_names(cls)
         extra = values.get("model_kwargs", {})
@@ -90,14 +99,6 @@ class Fireworks(LLM):
         )
         return values
 
-    @root_validator(pre=False, skip_on_failure=True)
-    def validate_environment(cls, values: Dict) -> Dict:
-        """Validate that api key exists in environment."""
-        values["fireworks_api_key"] = convert_to_secret_str(
-            get_from_dict_or_env(values, "fireworks_api_key", "FIREWORKS_API_KEY")
-        )
-        return values
-
     @property
     def _llm_type(self) -> str:
         """Return type of model."""

libs/partners/fireworks/scripts/check_pydantic.sh

@@ -20,8 +20,8 @@ result=$(git -C "$repository_path" grep -E '^import pydantic|^from pydantic')
 if [ -n "$result" ]; then
   echo "ERROR: The following lines need to be updated:"
   echo "$result"
-  echo "Please replace the code with an import from langchain_core.pydantic_v1."
+  echo "Please replace the code with an import from pydantic."
   echo "For example, replace 'from pydantic import BaseModel'"
-  echo "with 'from langchain_core.pydantic_v1 import BaseModel'"
+  echo "with 'from pydantic import BaseModel'"
   exit 1
 fi

libs/partners/fireworks/tests/integration_tests/test_chat_models.py

@@ -7,7 +7,7 @@ import json
 from typing import Optional
 
 from langchain_core.messages import AIMessage, AIMessageChunk, BaseMessageChunk
-from langchain_core.pydantic_v1 import BaseModel
+from pydantic import BaseModel
 
 from langchain_fireworks import ChatFireworks
 

libs/partners/fireworks/tests/unit_tests/test_embeddings_standard.py

@@ -0,0 +1,30 @@
+"""Standard LangChain interface tests"""
+
+from typing import Tuple, Type
+
+from langchain_core.embeddings import Embeddings
+from langchain_standard_tests.unit_tests.embeddings import EmbeddingsUnitTests
+
+from langchain_fireworks import FireworksEmbeddings
+
+
+class TestFireworksStandard(EmbeddingsUnitTests):
+    @property
+    def embeddings_class(self) -> Type[Embeddings]:
+        return FireworksEmbeddings
+
+    @property
+    def embeddings_params(self) -> dict:
+        return {"api_key": "test_api_key"}
+
+    @property
+    def init_from_env_params(self) -> Tuple[dict, dict, dict]:
+        return (
+            {
+                "FIREWORKS_API_KEY": "api_key",
+            },
+            {},
+            {
+                "fireworks_api_key": "api_key",
+            },
+        )

libs/partners/fireworks/tests/unit_tests/test_llms.py

@@ -2,7 +2,7 @@
 
 from typing import cast
 
-from langchain_core.pydantic_v1 import SecretStr
+from pydantic import SecretStr
 from pytest import CaptureFixture, MonkeyPatch
 
 from langchain_fireworks import Fireworks

libs/partners/fireworks/tests/unit_tests/test_standard.py

@@ -1,6 +1,6 @@
 """Standard LangChain interface tests"""
 
-from typing import Type
+from typing import Tuple, Type
 
 from langchain_core.language_models import BaseChatModel
 from langchain_standard_tests.unit_tests import (  # type: ignore[import-not-found]
@@ -18,3 +18,17 @@ class TestFireworksStandard(ChatModelUnitTests):
     @property
     def chat_model_params(self) -> dict:
         return {"api_key": "test_api_key"}
+
+    @property
+    def init_from_env_params(self) -> Tuple[dict, dict, dict]:
+        return (
+            {
+                "FIREWORKS_API_KEY": "api_key",
+                "FIREWORKS_API_BASE": "https://base.com",
+            },
+            {},
+            {
+                "fireworks_api_key": "api_key",
+                "fireworks_api_base": "https://base.com",
+            },
+        )