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from http.server import HTTPServer, BaseHTTPRequestHandler
import json
from datetime import datetime
import urllib.request
import ssl
import logging
# 设置日志
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
class ChatCompletionsHandler(BaseHTTPRequestHandler):
def do_POST(self):
if self.path != '/ai/v1/chat/completions':
self.send_error(404, "Not Found")
return
content_length = int(self.headers['Content-Length'])
post_data = self.rfile.read(content_length)
body = json.loads(post_data.decode('utf-8'))
model = body.get('model')
messages = body.get('messages')
stream = body.get('stream', False)
if not model or not messages or len(messages) == 0:
self.send_error(400, "Bad Request: Missing required fields")
return
prompt = messages[-1]['content']
new_url = f"https://api.siliconflow.cn/v1/{model}/text-to-image"
new_request_body = {
"prompt": prompt,
"image_size": "1024x1024",
"batch_size": 1,
"num_inference_steps": 4,
"guidance_scale": 1
}
req = urllib.request.Request(new_url,
data=json.dumps(new_request_body).encode('utf-8'),
headers={
'accept': 'application/json',
'content-type': 'application/json',
'Authorization': self.headers.get('Authorization')
},
method='POST')
ctx = ssl.create_default_context()
ctx.check_hostname = False
ctx.verify_mode = ssl.CERT_NONE
try:
with urllib.request.urlopen(req, context=ctx) as response:
response_body = json.loads(response.read().decode('utf-8'))
logger.info(f"API Response: {response_body}") # 记录 API 响应
if 'images' not in response_body or not response_body['images']:
raise ValueError("No images in the response")
image_url = response_body['images'][0].get('url')
if not image_url:
raise ValueError("No URL in the image response")
unique_id = int(datetime.now().timestamp() * 1000)
current_timestamp = int(unique_id / 1000)
if stream:
response_payload = {
"id": unique_id,
"object": "chat.completion.chunk",
"created": current_timestamp,
"model": model,
"choices": [
{
"index": 0,
"delta": {
"content": f""
},
"finish_reason": "stop"
}
]
}
self.send_response(200)
self.send_header('Content-Type', 'text/event-stream')
self.end_headers()
self.wfile.write(f"data: {json.dumps(response_payload)}\n\n".encode('utf-8'))
else:
response_payload = {
"id": unique_id,
"object": "chat.completion",
"created": current_timestamp,
"model": model,
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": f""
},
"logprobs": None,
"finish_reason": "length"
}
],
"usage": {
"prompt_tokens": len(prompt),
"completion_tokens": len(image_url),
"total_tokens": len(prompt) + len(image_url)
}
}
self.send_response(200)
self.send_header('Content-Type', 'application/json')
self.end_headers()
self.wfile.write(json.dumps(response_payload).encode('utf-8'))
except Exception as e:
logger.error(f"Error occurred: {str(e)}")
self.send_error(500, f"Internal Server Error: {str(e)}")
def run(server_class=HTTPServer, handler_class=ChatCompletionsHandler, port=8000):
server_address = ('', port)
httpd = server_class(server_address, handler_class)
logger.info(f"Starting server on port {port}")
httpd.serve_forever()
if __name__ == '__main__':
run() |