1 files changed, 73 insertions, 0 deletions
diff --git a/rag/retriever/vector.py b/rag/retriever/vector.py
new file mode 100644
index 0000000..fd2b2c2
--- /dev/null
+++ b/rag/retriever/vector.py
@@ -0,0 +1,73 @@
+import os
+from dataclasses import dataclass
+from typing import Dict, List
+
+from loguru import logger as log
+from qdrant_client import QdrantClient
+from qdrant_client.http.models import StrictFloat
+from qdrant_client.models import Distance, PointStruct, VectorParams
+
+
+@dataclass
+class Point:
+    id: str
+    vector: List[StrictFloat]
+    payload: Dict[str, str]
+
+
+@dataclass
+class Document:
+    title: str
+    text: str
+
+
+class VectorDB:
+    def __init__(self, score_threshold: float = 0.6):
+        self.dim = int(os.environ["EMBEDDING_DIM"])
+        self.collection_name = os.environ["QDRANT_COLLECTION_NAME"]
+        self.client = QdrantClient(url=os.environ["QDRANT_URL"])
+        self.score_threshold = score_threshold
+        self.__configure()
+
+    def __configure(self):
+        collections = list(
+            map(lambda col: col.name, self.client.get_collections().collections)
+        )
+        if self.collection_name not in collections:
+            log.debug(f"Configuring collection {self.collection_name}...")
+            self.client.create_collection(
+                collection_name=self.collection_name,
+                vectors_config=VectorParams(size=self.dim, distance=Distance.COSINE),
+            )
+        else:
+            log.debug(f"Collection {self.collection_name} already exists...")
+
+    def add(self, points: List[Point]):
+        log.debug(f"Inserting {len(points)} vectors into the vector db...")
+        self.client.upload_points(
+            collection_name=self.collection_name,
+            points=[
+                PointStruct(id=point.id, vector=point.vector, payload=point.payload)
+                for point in points
+            ],
+            parallel=4,
+            max_retries=3,
+        )
+
+    def search(self, query: List[float], limit: int = 5) -> List[Document]:
+        log.debug("Searching for vectors...")
+        hits = self.client.search(
+            collection_name=self.collection_name,
+            query_vector=query,
+            limit=limit,
+            score_threshold=self.score_threshold,
+        )
+        log.debug(f"Got {len(hits)} hits in the vector db with limit={limit}")
+        return list(
+            map(
+                lambda h: Document(
+                    title=h.payload.get("source", ""), text=h.payload["text"]
+                ),
+                hits,
+            )
+        )