impls -> inline, adapters -> remote (#381)

llama_stack/providers/remote/memory/qdrant/qdrant.py

@@ -0,0 +1,170 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+
+import traceback
+import uuid
+from typing import Any, Dict, List
+
+from numpy.typing import NDArray
+from qdrant_client import AsyncQdrantClient, models
+from qdrant_client.models import PointStruct
+
+from llama_stack.providers.datatypes import MemoryBanksProtocolPrivate
+
+from llama_stack.apis.memory import *  # noqa: F403
+
+from llama_stack.providers.remote.memory.qdrant.config import QdrantConfig
+from llama_stack.providers.utils.memory.vector_store import (
+    BankWithIndex,
+    EmbeddingIndex,
+)
+
+CHUNK_ID_KEY = "_chunk_id"
+
+
+def convert_id(_id: str) -> str:
+    """
+    Converts any string into a UUID string based on a seed.
+
+    Qdrant accepts UUID strings and unsigned integers as point ID.
+    We use a seed to convert each string into a UUID string deterministically.
+    This allows us to overwrite the same point with the original ID.
+    """
+    return str(uuid.uuid5(uuid.NAMESPACE_DNS, _id))
+
+
+class QdrantIndex(EmbeddingIndex):
+    def __init__(self, client: AsyncQdrantClient, collection_name: str):
+        self.client = client
+        self.collection_name = collection_name
+
+    async def add_chunks(self, chunks: List[Chunk], embeddings: NDArray):
+        assert len(chunks) == len(
+            embeddings
+        ), f"Chunk length {len(chunks)} does not match embedding length {len(embeddings)}"
+
+        if not await self.client.collection_exists(self.collection_name):
+            await self.client.create_collection(
+                self.collection_name,
+                vectors_config=models.VectorParams(
+                    size=len(embeddings[0]), distance=models.Distance.COSINE
+                ),
+            )
+
+        points = []
+        for i, (chunk, embedding) in enumerate(zip(chunks, embeddings)):
+            chunk_id = f"{chunk.document_id}:chunk-{i}"
+            points.append(
+                PointStruct(
+                    id=convert_id(chunk_id),
+                    vector=embedding,
+                    payload={"chunk_content": chunk.model_dump()}
+                    | {CHUNK_ID_KEY: chunk_id},
+                )
+            )
+
+        await self.client.upsert(collection_name=self.collection_name, points=points)
+
+    async def query(
+        self, embedding: NDArray, k: int, score_threshold: float
+    ) -> QueryDocumentsResponse:
+        results = (
+            await self.client.query_points(
+                collection_name=self.collection_name,
+                query=embedding.tolist(),
+                limit=k,
+                with_payload=True,
+                score_threshold=score_threshold,
+            )
+        ).points
+
+        chunks, scores = [], []
+        for point in results:
+            assert isinstance(point, models.ScoredPoint)
+            assert point.payload is not None
+
+            try:
+                chunk = Chunk(**point.payload["chunk_content"])
+            except Exception:
+                traceback.print_exc()
+                continue
+
+            chunks.append(chunk)
+            scores.append(point.score)
+
+        return QueryDocumentsResponse(chunks=chunks, scores=scores)
+
+
+class QdrantVectorMemoryAdapter(Memory, MemoryBanksProtocolPrivate):
+    def __init__(self, config: QdrantConfig) -> None:
+        self.config = config
+        self.client = AsyncQdrantClient(**self.config.model_dump(exclude_none=True))
+        self.cache = {}
+
+    async def initialize(self) -> None:
+        pass
+
+    async def shutdown(self) -> None:
+        self.client.close()
+
+    async def register_memory_bank(
+        self,
+        memory_bank: MemoryBankDef,
+    ) -> None:
+        assert (
+            memory_bank.type == MemoryBankType.vector.value
+        ), f"Only vector banks are supported {memory_bank.type}"
+
+        index = BankWithIndex(
+            bank=memory_bank,
+            index=QdrantIndex(self.client, memory_bank.identifier),
+        )
+
+        self.cache[memory_bank.identifier] = index
+
+    async def list_memory_banks(self) -> List[MemoryBankDef]:
+        # Qdrant doesn't have collection level metadata to store the bank properties
+        # So we only return from the cache value
+        return [i.bank for i in self.cache.values()]
+
+    async def _get_and_cache_bank_index(self, bank_id: str) -> Optional[BankWithIndex]:
+        if bank_id in self.cache:
+            return self.cache[bank_id]
+
+        bank = await self.memory_bank_store.get_memory_bank(bank_id)
+        if not bank:
+            raise ValueError(f"Bank {bank_id} not found")
+
+        index = BankWithIndex(
+            bank=bank,
+            index=QdrantIndex(client=self.client, collection_name=bank_id),
+        )
+        self.cache[bank_id] = index
+        return index
+
+    async def insert_documents(
+        self,
+        bank_id: str,
+        documents: List[MemoryBankDocument],
+        ttl_seconds: Optional[int] = None,
+    ) -> None:
+        index = await self._get_and_cache_bank_index(bank_id)
+        if not index:
+            raise ValueError(f"Bank {bank_id} not found")
+
+        await index.insert_documents(documents)
+
+    async def query_documents(
+        self,
+        bank_id: str,
+        query: InterleavedTextMedia,
+        params: Optional[Dict[str, Any]] = None,
+    ) -> QueryDocumentsResponse:
+        index = await self._get_and_cache_bank_index(bank_id)
+        if not index:
+            raise ValueError(f"Bank {bank_id} not found")
+
+        return await index.query_documents(query, params)