text-generation-webui/api-example-stream.py
Andy Salerno 654933c634
New universal API with streaming/blocking endpoints (#990)
Previous title: Add api_streaming extension and update api-example-stream to use it

* Merge with latest main

* Add parameter capturing encoder_repetition_penalty

* Change some defaults, minor fixes

* Add --api, --public-api flags

* remove unneeded/broken comment from blocking API startup. The comment is already correctly emitted in try_start_cloudflared by calling the lambda we pass in.

* Update on_start message for blocking_api, it should say 'non-streaming' and not 'streaming'

* Update the API examples

* Change a comment

* Update README

* Remove the gradio API

* Remove unused import

* Minor change

* Remove unused import

---------

Co-authored-by: oobabooga <112222186+oobabooga@users.noreply.github.com>
2023-04-23 15:52:43 -03:00

67 lines
1.9 KiB
Python

import asyncio
import json
import sys
try:
import websockets
except ImportError:
print("Websockets package not found. Make sure it's installed.")
# For local streaming, the websockets are hosted without ssl - ws://
HOST = 'localhost:5005'
URI = f'ws://{HOST}/api/v1/stream'
# For reverse-proxied streaming, the remote will likely host with ssl - wss://
# URI = 'wss://your-uri-here.trycloudflare.com/api/v1/stream'
async def run(context):
# Note: the selected defaults change from time to time.
request = {
'prompt': context,
'max_new_tokens': 250,
'do_sample': True,
'temperature': 1.3,
'top_p': 0.1,
'typical_p': 1,
'repetition_penalty': 1.18,
'top_k': 40,
'min_length': 0,
'no_repeat_ngram_size': 0,
'num_beams': 1,
'penalty_alpha': 0,
'length_penalty': 1,
'early_stopping': False,
'seed': -1,
'add_bos_token': True,
'truncation_length': 2048,
'ban_eos_token': False,
'skip_special_tokens': True,
'stopping_strings': []
}
async with websockets.connect(URI) as websocket:
await websocket.send(json.dumps(request))
yield context # Remove this if you just want to see the reply
while True:
incoming_data = await websocket.recv()
incoming_data = json.loads(incoming_data)
match incoming_data['event']:
case 'text_stream':
yield incoming_data['text']
case 'stream_end':
return
async def print_response_stream(prompt):
async for response in run(prompt):
print(response, end='')
sys.stdout.flush() # If we don't flush, we won't see tokens in realtime.
if __name__ == '__main__':
prompt = "In order to make homemade bread, follow these steps:\n1)"
asyncio.run(print_response_stream(prompt))