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"""
## introduction
Streaming mode is not supported in latest gradio api. But you can implement with http request.
## gradio api
from gradio_client import Client
client = Client("xu-song/self-chat")
fn_index = self._infer_fn_index("set_state")
"""
import string
import requests
import json
import random
def set_system(session_hash, system):
url = 'https://xu-song-self-chat.hf.space/queue/join'
payload = {"data": [system], "event_data": None, "fn_index": 0, "trigger_id": 4,
"session_hash": session_hash}
headers = {'Content-Type': 'application/json', 'Accept': '*/*'}
response = requests.post(url,
data=json.dumps(payload),
headers=headers,
stream=True)
resp = response.json()
event_id = resp["event_id"]
return event_id
def submit(session_hash, messages):
"""
"""
url = 'https://xu-song-self-chat.hf.space/queue/join'
payload = {"data": messages, "event_data": None, "fn_index": 1, "trigger_id": 8, "session_hash": session_hash}
headers = {'Content-Type': 'application/json', 'Accept': '*/*'}
response = requests.post(url,
data=json.dumps(payload),
headers=headers,
stream=True)
resp = response.json()
event_id = resp["event_id"]
return event_id
def stream_message(session_hash):
"""
- javascript_client: https://github.com/gradio-app/gradio/blob/9f0fe392c9f2604b9f937b9414e67d9b71b69109/client/js/src/utils/stream.ts#L42
- python_client: https://github.com/gradio-app/gradio/blob/9f0fe392c9f2604b9f937b9414e67d9b71b69109/client/python/gradio_client/client.py#L248
"""
sse_url = 'https://xu-song-self-chat.hf.space/queue/data'
# sse_url = f'https://xu-song-self-chat.hf.space/queue/data?session_hash={session_hash}' # 等价
payload = {'session_hash': session_hash}
headers = {'Content-Type': 'application/json', 'Accept': 'text/event-stream'} # Headers for SSE request
response = requests.get(sse_url,
params=payload, # 等价于拼接在url中。
# json=payload, # ？
headers=headers,
stream=True)
final_output = None
# Check if the request was successful
if response.status_code == 200:
for line in response.iter_lines():
if not line:
continue
decoded_line = line.decode('utf-8')
# print(decoded_line)
if not decoded_line.startswith("data:"):
continue
data = json.loads(decoded_line.strip("data:").strip())
if "output" not in data:
continue
messages = data["output"]["data"][0]
if not messages:
continue
message = messages[-1]
if len(message) == 2:
q, a = message
content = a if a else q
elif len(message) == 3:
action, _, content = message
else:
raise Exception("response error")
if data['msg'] == "process_completed":
final_output = data["output"]["data"]
else:
print(content, end="")
else:
print(f"Request failed with status code: {response.status_code}")
print("")
response.close() # Close the connection
return final_output
def self_chat_demo(system_message, num_turn=4):
session_hash = create_session_hash()
print(f"SYSTEM: {system_message}")
set_system(session_hash, system_message)
messages = [[], None]
for num in range(num_turn):
if num % 2 == 0:
print("===" * 10)
print("USER: ", end="")
else:
print("ASSISTANT: ", end="")
submit(session_hash, messages) #
messages = stream_message(session_hash)
def create_session_hash(hash_size=10):
"""
random().toString(36).substring(2), which implemented in https://github.com/gradio-app/gradio/blob/v3.41.0/client/js/src/client.ts#L258
"""
chars = string.ascii_letters + string.digits
return ''.join(random.choice(chars) for _ in range(hash_size))
if __name__ == "__main__":
self_chat_demo(system_message="你是一个小说家，擅长写武侠小说")
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