B FastembedServer: Switch to OpenAI api, support changing models

python/fastembed-server.py

@@ -2,18 +2,20 @@ from fastembed import TextEmbedding
 from fastapi import FastAPI
 from pydantic import BaseModel
 
-model = TextEmbedding("snowflake/snowflake-arctic-embed-xs")
+models = {}
 
 app = FastAPI()
 
 class EmbeddingRequest(BaseModel):
     model: str
-    prompt: str
+    input: str
 
-@app.post("/api/embeddings")
+@app.post("/v1/embeddings")
 def embeddings(request: EmbeddingRequest):
-    embeddings = next(model.embed(request.prompt)).tolist()
-    return {"embedding": embeddings}
+    model = models.get(request.model) or TextEmbedding(request.model)
+    models[request.model] = model
+    embeddings = next(model.embed(request.input)).tolist()
+    return {"data": [{"embedding": embeddings}]}
 
 if __name__ == "__main__":
     import uvicorn