Qdrant RAG Provider Support (#3400)

* Added Qdrant provider support with factory, config, and protocols
* Improved default embeddings and type definitions
* Fixed ChromaDB factory embedding assignment

src/crewai/rag/chromadb/config.py

@@ -1,6 +1,5 @@
 """ChromaDB configuration model."""
 
-import os
 import warnings
 from dataclasses import field
 from typing import Literal, cast
@@ -9,9 +8,12 @@ from chromadb.config import Settings
 from chromadb.utils.embedding_functions import DefaultEmbeddingFunction
 
 from crewai.rag.chromadb.types import ChromaEmbeddingFunctionWrapper
-from crewai.utilities.paths import db_storage_path
 from crewai.rag.config.base import BaseRagConfig
-from crewai.rag.chromadb.constants import DEFAULT_TENANT, DEFAULT_DATABASE
+from crewai.rag.chromadb.constants import (
+    DEFAULT_TENANT,
+    DEFAULT_DATABASE,
+    DEFAULT_STORAGE_PATH,
+)
 
 
 warnings.filterwarnings(
@@ -29,7 +31,7 @@ def _default_settings() -> Settings:
         Settings with persistent storage and reset enabled.
     """
     return Settings(
-        persist_directory=os.path.join(db_storage_path(), "chromadb"),
+        persist_directory=DEFAULT_STORAGE_PATH,
         allow_reset=True,
         is_persistent=True,
     )
@@ -39,7 +41,7 @@ def _default_embedding_function() -> ChromaEmbeddingFunctionWrapper:
     """Create default ChromaDB embedding function.
 
     Returns:
-        Default embedding function cast to proper type.
+        Default embedding function using all-MiniLM-L6-v2 via ONNX.
     """
     return cast(ChromaEmbeddingFunctionWrapper, DefaultEmbeddingFunction())
 
@@ -52,6 +54,6 @@ class ChromaDBConfig(BaseRagConfig):
     tenant: str = DEFAULT_TENANT
     database: str = DEFAULT_DATABASE
     settings: Settings = field(default_factory=_default_settings)
-    embedding_function: ChromaEmbeddingFunctionWrapper | None = field(
+    embedding_function: ChromaEmbeddingFunctionWrapper = field(
         default_factory=_default_embedding_function
     )

src/crewai/rag/chromadb/constants.py

@@ -1,6 +1,10 @@
 """Constants for ChromaDB configuration."""
 
+import os
 from typing import Final
 
+from crewai.utilities.paths import db_storage_path
+
 DEFAULT_TENANT: Final[str] = "default_tenant"
 DEFAULT_DATABASE: Final[str] = "default_database"
+DEFAULT_STORAGE_PATH: Final[str] = os.path.join(db_storage_path(), "chromadb")

src/crewai/rag/config/factory.py

@@ -2,7 +2,10 @@
 
 from typing import cast
 
-from crewai.rag.config.optional_imports.protocols import ChromaFactoryModule
+from crewai.rag.config.optional_imports.protocols import (
+    ChromaFactoryModule,
+    QdrantFactoryModule,
+)
 from crewai.rag.core.base_client import BaseClient
 from crewai.rag.config.types import RagConfigType
 from crewai.utilities.import_utils import require
@@ -22,11 +25,21 @@ def create_client(config: RagConfigType) -> BaseClient:
     """
 
     if config.provider == "chromadb":
-        mod = cast(
+        chromadb_mod = cast(
             ChromaFactoryModule,
             require(
                 "crewai.rag.chromadb.factory",
                 purpose="The 'chromadb' provider",
             ),
         )
-        return mod.create_client(config)
+        return chromadb_mod.create_client(config)
+
+    if config.provider == "qdrant":
+        qdrant_mod = cast(
+            QdrantFactoryModule,
+            require(
+                "crewai.rag.qdrant.factory",
+                purpose="The 'qdrant' provider",
+            ),
+        )
+        return qdrant_mod.create_client(config)

src/crewai/rag/config/optional_imports/base.py

@@ -14,7 +14,9 @@ class _MissingProvider:
     Raises RuntimeError when instantiated to indicate missing dependencies.
     """
 
-    provider: Literal["chromadb", "__missing__"] = field(default="__missing__")
+    provider: Literal["chromadb", "qdrant", "__missing__"] = field(
+        default="__missing__"
+    )
 
     def __post_init__(self) -> None:
         """Raises error indicating the provider is not installed."""

src/crewai/rag/config/optional_imports/protocols.py

@@ -1,14 +1,27 @@
 """Protocol definitions for RAG factory modules."""
 
-from typing import Protocol
+from __future__ import annotations
 
-from crewai.rag.config.types import RagConfigType
-from crewai.rag.core.base_client import BaseClient
+from typing import Protocol, TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from crewai.rag.chromadb.client import ChromaDBClient
+    from crewai.rag.chromadb.config import ChromaDBConfig
+    from crewai.rag.qdrant.client import QdrantClient
+    from crewai.rag.qdrant.config import QdrantConfig
 
 
 class ChromaFactoryModule(Protocol):
     """Protocol for ChromaDB factory module."""
 
-    def create_client(self, config: RagConfigType) -> BaseClient:
+    def create_client(self, config: ChromaDBConfig) -> ChromaDBClient:
         """Creates a ChromaDB client from configuration."""
         ...
+
+
+class QdrantFactoryModule(Protocol):
+    """Protocol for Qdrant factory module."""
+
+    def create_client(self, config: QdrantConfig) -> QdrantClient:
+        """Creates a Qdrant client from configuration."""
+        ...

src/crewai/rag/config/optional_imports/providers.py

@@ -13,3 +13,10 @@ class MissingChromaDBConfig(_MissingProvider):
     """Placeholder for missing ChromaDB configuration."""
 
     provider: Literal["chromadb"] = field(default="chromadb")
+
+
+@pyd_dataclass(config=ConfigDict(extra="forbid"))
+class MissingQdrantConfig(_MissingProvider):
+    """Placeholder for missing Qdrant configuration."""
+
+    provider: Literal["qdrant"] = field(default="qdrant")

src/crewai/rag/config/optional_imports/types.py

@@ -3,6 +3,6 @@
 from typing import Annotated, Literal
 
 SupportedProvider = Annotated[
-    Literal["chromadb"],
+    Literal["chromadb", "qdrant"],
     "Supported RAG provider types, add providers here as they become available",
 ]

src/crewai/rag/config/types.py

@@ -1,12 +1,18 @@
 """Type definitions for RAG configuration."""
 
-from typing import TYPE_CHECKING, Annotated, TypeAlias
+from typing import Annotated, TypeAlias, TYPE_CHECKING
 from pydantic import Field
 
 from crewai.rag.config.constants import DISCRIMINATOR
 
+# Linter freaks out on conditional imports, assigning in the type checking fixes it
 if TYPE_CHECKING:
-    from crewai.rag.chromadb.config import ChromaDBConfig
+    from crewai.rag.chromadb.config import ChromaDBConfig as ChromaDBConfig_
+
+    ChromaDBConfig = ChromaDBConfig_
+    from crewai.rag.qdrant.config import QdrantConfig as QdrantConfig_
+
+    QdrantConfig = QdrantConfig_
 else:
     try:
         from crewai.rag.chromadb.config import ChromaDBConfig
@@ -15,7 +21,14 @@ else:
             MissingChromaDBConfig as ChromaDBConfig,
         )
 
-SupportedProviderConfig: TypeAlias = ChromaDBConfig
+    try:
+        from crewai.rag.qdrant.config import QdrantConfig
+    except ImportError:
+        from crewai.rag.config.optional_imports.providers import (
+            MissingQdrantConfig as QdrantConfig,
+        )
+
+SupportedProviderConfig: TypeAlias = ChromaDBConfig | QdrantConfig
 RagConfigType: TypeAlias = Annotated[
     SupportedProviderConfig, Field(discriminator=DISCRIMINATOR)
 ]

src/crewai/rag/core/base_client.py

@@ -1,8 +1,8 @@
 """Protocol for vector database client implementations."""
 
 from abc import abstractmethod
-from typing import Any, Protocol, runtime_checkable, TypedDict, Annotated
-from typing_extensions import Unpack, Required
+from typing import Any, Protocol, runtime_checkable, Annotated
+from typing_extensions import Unpack, Required, TypedDict
 from pydantic import GetCoreSchemaHandler
 from pydantic_core import CoreSchema, core_schema
 

src/crewai/rag/qdrant/config.py

@@ -0,0 +1,54 @@
+"""Qdrant configuration model."""
+
+from dataclasses import field
+from typing import Literal, cast
+from pydantic.dataclasses import dataclass as pyd_dataclass
+
+from crewai.rag.config.base import BaseRagConfig
+from crewai.rag.qdrant.types import QdrantClientParams, QdrantEmbeddingFunctionWrapper
+from crewai.rag.qdrant.constants import DEFAULT_EMBEDDING_MODEL, DEFAULT_STORAGE_PATH
+
+
+def _default_options() -> QdrantClientParams:
+    """Create default Qdrant client options.
+
+    Returns:
+        Default options with file-based storage.
+    """
+    return QdrantClientParams(path=DEFAULT_STORAGE_PATH)
+
+
+def _default_embedding_function() -> QdrantEmbeddingFunctionWrapper:
+    """Create default Qdrant embedding function.
+
+    Returns:
+        Default embedding function using fastembed with all-MiniLM-L6-v2.
+    """
+    from fastembed import TextEmbedding
+
+    model = TextEmbedding(model_name=DEFAULT_EMBEDDING_MODEL)
+
+    def embed_fn(text: str) -> list[float]:
+        """Embed a single text string.
+
+        Args:
+            text: Text to embed.
+
+        Returns:
+            Embedding vector as list of floats.
+        """
+        embeddings = list(model.embed([text]))
+        return embeddings[0].tolist() if embeddings else []
+
+    return cast(QdrantEmbeddingFunctionWrapper, embed_fn)
+
+
+@pyd_dataclass(frozen=True)
+class QdrantConfig(BaseRagConfig):
+    """Configuration for Qdrant client."""
+
+    provider: Literal["qdrant"] = field(default="qdrant", init=False)
+    options: QdrantClientParams = field(default_factory=_default_options)
+    embedding_function: QdrantEmbeddingFunctionWrapper = field(
+        default_factory=_default_embedding_function
+    )

src/crewai/rag/qdrant/constants.py

@@ -1,7 +1,12 @@
 """Constants for Qdrant implementation."""
 
+import os
 from typing import Final
 
 from qdrant_client.models import Distance, VectorParams
 
+from crewai.utilities.paths import db_storage_path
+
 DEFAULT_VECTOR_PARAMS: Final = VectorParams(size=384, distance=Distance.COSINE)
+DEFAULT_EMBEDDING_MODEL: Final[str] = "sentence-transformers/all-MiniLM-L6-v2"
+DEFAULT_STORAGE_PATH: Final[str] = os.path.join(db_storage_path(), "qdrant")

src/crewai/rag/qdrant/factory.py

@@ -0,0 +1,21 @@
+"""Factory functions for creating Qdrant clients from configuration."""
+
+from qdrant_client import QdrantClient as SyncQdrantClientBase
+from crewai.rag.qdrant.client import QdrantClient
+from crewai.rag.qdrant.config import QdrantConfig
+
+
+def create_client(config: QdrantConfig) -> QdrantClient:
+    """Create a Qdrant client from configuration.
+
+    Args:
+        config: The Qdrant configuration.
+
+    Returns:
+        A configured QdrantClient instance.
+    """
+
+    qdrant_client = SyncQdrantClientBase(**config.options)
+    return QdrantClient(
+        client=qdrant_client, embedding_function=config.embedding_function
+    )

src/crewai/rag/qdrant/types.py

@@ -1,10 +1,12 @@
 """Type definitions specific to Qdrant implementation."""
 
 from collections.abc import Awaitable, Callable
-from typing import Annotated, Any, Protocol, TypeAlias, TypedDict
-from typing_extensions import NotRequired
+from typing import Annotated, Any, Protocol, TypeAlias
+from typing_extensions import NotRequired, TypedDict
 
 import numpy as np
+from pydantic import GetCoreSchemaHandler
+from pydantic_core import CoreSchema, core_schema
 from qdrant_client import AsyncQdrantClient, QdrantClient as SyncQdrantClient
 from qdrant_client.models import (
     FieldCondition,
@@ -53,6 +55,21 @@ class EmbeddingFunction(Protocol):
         ...
 
 
+class QdrantEmbeddingFunctionWrapper(EmbeddingFunction):
+    """Base class for Qdrant EmbeddingFunction to work with Pydantic validation."""
+
+    @classmethod
+    def __get_pydantic_core_schema__(
+        cls, _source_type: Any, _handler: GetCoreSchemaHandler
+    ) -> CoreSchema:
+        """Generate Pydantic core schema for Qdrant EmbeddingFunction.
+
+        This allows Pydantic to handle Qdrant's EmbeddingFunction type
+        without requiring arbitrary_types_allowed=True.
+        """
+        return core_schema.any_schema()
+
+
 class AsyncEmbeddingFunction(Protocol):
     """Protocol for async embedding functions that convert text to vectors."""
 

src/crewai/rag/types.py

@@ -1,9 +1,9 @@
 """Type definitions for RAG (Retrieval-Augmented Generation) systems."""
 
 from collections.abc import Callable, Mapping
-from typing import TypeAlias, TypedDict, Any
+from typing import TypeAlias, Any
 
-from typing_extensions import Required
+from typing_extensions import Required, TypedDict
 
 
 class BaseRecord(TypedDict, total=False):