mirror of
https://github.com/oobabooga/text-generation-webui.git
synced 2024-11-22 16:17:57 +01:00
109 lines
3.7 KiB
Python
109 lines
3.7 KiB
Python
import asyncio
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import json
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import sys
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try:
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import websockets
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except ImportError:
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print("Websockets package not found. Make sure it's installed.")
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# For local streaming, the websockets are hosted without ssl - ws://
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HOST = 'localhost:5005'
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URI = f'ws://{HOST}/api/v1/chat-stream'
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# For reverse-proxied streaming, the remote will likely host with ssl - wss://
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# URI = 'wss://your-uri-here.trycloudflare.com/api/v1/stream'
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async def run(user_input, history):
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# Note: the selected defaults change from time to time.
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request = {
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'user_input': user_input,
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'max_new_tokens': 250,
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'auto_max_new_tokens': False,
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'history': history,
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'mode': 'instruct', # Valid options: 'chat', 'chat-instruct', 'instruct'
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'character': 'Example',
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'instruction_template': 'Vicuna-v1.1', # Will get autodetected if unset
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'your_name': 'You',
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# 'name1': 'name of user', # Optional
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# 'name2': 'name of character', # Optional
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# 'context': 'character context', # Optional
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# 'greeting': 'greeting', # Optional
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# 'name1_instruct': 'You', # Optional
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# 'name2_instruct': 'Assistant', # Optional
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# 'context_instruct': 'context_instruct', # Optional
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# 'turn_template': 'turn_template', # Optional
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'regenerate': False,
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'_continue': False,
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'stop_at_newline': False,
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'chat_generation_attempts': 1,
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'chat-instruct_command': 'Continue the chat dialogue below. Write a single reply for the character "<|character|>".\n\n<|prompt|>',
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# Generation params. If 'preset' is set to different than 'None', the values
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# in presets/preset-name.yaml are used instead of the individual numbers.
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'preset': 'None',
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'do_sample': True,
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'temperature': 0.7,
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'top_p': 0.1,
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'typical_p': 1,
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'epsilon_cutoff': 0, # In units of 1e-4
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'eta_cutoff': 0, # In units of 1e-4
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'tfs': 1,
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'top_a': 0,
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'repetition_penalty': 1.18,
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'repetition_penalty_range': 0,
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'top_k': 40,
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'min_length': 0,
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'no_repeat_ngram_size': 0,
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'num_beams': 1,
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'penalty_alpha': 0,
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'length_penalty': 1,
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'early_stopping': False,
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'mirostat_mode': 0,
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'mirostat_tau': 5,
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'mirostat_eta': 0.1,
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'seed': -1,
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'add_bos_token': True,
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'truncation_length': 2048,
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'ban_eos_token': False,
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'skip_special_tokens': True,
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'stopping_strings': []
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}
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async with websockets.connect(URI, ping_interval=None) as websocket:
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await websocket.send(json.dumps(request))
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while True:
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incoming_data = await websocket.recv()
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incoming_data = json.loads(incoming_data)
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match incoming_data['event']:
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case 'text_stream':
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yield incoming_data['history']
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case 'stream_end':
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return
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async def print_response_stream(user_input, history):
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cur_len = 0
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async for new_history in run(user_input, history):
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cur_message = new_history['visible'][-1][1][cur_len:]
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cur_len += len(cur_message)
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print(cur_message, end='')
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sys.stdout.flush() # If we don't flush, we won't see tokens in realtime.
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if __name__ == '__main__':
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user_input = "Please give me a step-by-step guide on how to plant a tree in my backyard."
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# Basic example
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history = {'internal': [], 'visible': []}
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# "Continue" example. Make sure to set '_continue' to True above
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# arr = [user_input, 'Surely, here is']
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# history = {'internal': [arr], 'visible': [arr]}
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asyncio.run(print_response_stream(user_input, history))
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