From 0a27d56634d0a312b1d9b7abe61685b80bbe5084 Mon Sep 17 00:00:00 2001
From: OlivierDehaene <23298448+OlivierDehaene@users.noreply.github.com>
Date: Tue, 7 Mar 2023 10:14:49 +0100
Subject: [PATCH] wip

---
 .../text_generation_inference/async_client.py | 64 ++++++++++++++++++-
 1 file changed, 62 insertions(+), 2 deletions(-)

diff --git a/clients/python/text_generation_inference/async_client.py b/clients/python/text_generation_inference/async_client.py
index 4867c47a..225d55ad 100644
--- a/clients/python/text_generation_inference/async_client.py
+++ b/clients/python/text_generation_inference/async_client.py
@@ -1,3 +1,63 @@
-# class AsyncClient:
+import json
 
-from asyncio import
\ No newline at end of file
+from aiohttp import ClientSession, ClientTimeout
+from pydantic import ValidationError
+from typing import Optional
+
+from text_generation_inference.types import StreamResponse, ErrorModel, Response
+
+
+class AsyncClient:
+    def __init__(self, model_id: str, token: Optional[str] = None, timeout: int = 10):
+        headers = {}
+        if token is not None:
+            headers = {"Authorization": f"Bearer {token}"}
+        self.model_id = model_id
+
+        self.session = ClientSession(headers=headers, timeout=ClientTimeout(timeout * 60))
+
+    async def generate(self):
+        async with self.session.post(f"https://api-inference.huggingface.co/models/{self.model_id}",
+                                     json={"inputs": "test", "stream": True}) as resp:
+            if resp.status != 200:
+                error = ErrorModel(**await resp.json())
+                raise error.to_exception()
+            return Response(**await resp.json())
+
+    async def generate_stream(self):
+        async with self.session.post(f"https://api-inference.huggingface.co/models/{self.model_id}",
+                                     json={"inputs": "test", "stream": True}) as resp:
+            if resp.status != 200:
+                error = ErrorModel(**await resp.json())
+                raise error.to_exception()
+
+            async for byte_payload in resp.content:
+                if byte_payload == b"\n":
+                    continue
+
+                payload = byte_payload.decode("utf-8")
+
+                if payload.startswith("data:"):
+                    json_payload = json.loads(payload.lstrip("data:").rstrip("/n"))
+                    try:
+                        response = StreamResponse(**json_payload)
+                    except ValidationError:
+                        error = ErrorModel(**json_payload)
+                        raise error.to_exception()
+                    yield response.token
+
+    def __del__(self):
+        self.session.close()
+
+
+async def main():
+    client = AsyncClient("bigscience/bloomz")
+    async for token in client.generate_stream():
+        print(token)
+
+    print(await client.generate())
+
+
+import asyncio
+
+asyncio.run(main())