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Delete endpoint_handler.py
Browse files- endpoint_handler.py +0 -86
endpoint_handler.py
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import torch
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from PIL import Image
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from transformers import AutoModel, AutoTokenizer
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from io import BytesIO
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import base64
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from huggingface_hub import login
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import os
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class EndpointHandler:
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def __init__(self, model_dir=None):
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print("[Init] Initializing EndpointHandler...")
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self.load_model()
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def load_model(self):
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hf_token = os.getenv("HF_TOKEN")
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# Replace with the quantized version if available
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model_path = "openbmb/MiniCPM-V-4" # Hypothetical quantized version
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if hf_token:
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print("[Auth] Logging into Hugging Face Hub with token...")
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login(token=hf_token)
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print(f"[Model Load] Loading quantized model from: {model_path}")
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try:
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self.model = AutoModel.from_pretrained(model_path, trust_remote_code=True,
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attn_implementation='sdpa', torch_dtype=torch.bfloat16).eval().cuda()
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print("model loaded sucessfully")
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self.tokenizer = AutoTokenizer.from_pretrained(model_path, trust_remote_code=True)
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print("tokenizer loaded sucessfully")
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except Exception as e:
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print(f"[Model Load Error] {e}")
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raise RuntimeError(f"Failed to load quantized model: {e}")
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def load_image(self, image_base64):
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try:
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print("[Image Load] Decoding base64 image...")
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image_bytes = base64.b64decode(image_base64)
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image = Image.open(BytesIO(image_bytes)).convert("RGB")
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print("[Image Load] Image successfully decoded and converted to RGB.")
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return image
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except Exception as e:
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print(f"[Image Load Error] {e}")
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raise ValueError(f"Failed to open image from base64 string: {e}")
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def predict(self, request):
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print(f"[Predict] Received request: {request}")
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image_base64 = request.get("inputs", {}).get("image")
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question = request.get("inputs", {}).get("question")
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stream = request.get("inputs", {}).get("stream", False)
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if not image_base64 or not question:
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print("[Predict Error] Missing 'image' or 'question' in the request.")
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return {"error": "Missing 'image' or 'question' in inputs."}
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try:
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image = self.load_image(image_base64)
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msgs = [{"role": "user", "content": [image, question]}]
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print(f"[Predict] Asking model with question: {question}")
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print("[Predict] Starting chat inference...")
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res = self.model.chat(
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image=image,
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msgs=msgs,
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tokenizer=self.tokenizer,
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sampling=True,
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stream=stream
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)
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if stream:
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for new_text in res:
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yield {"output": new_text}
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else:
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generated_text = "".join(res)
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print("[Predict] Inference complete.")
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return {"output": generated_text}
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except Exception as e:
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print(f"[Predict Error] {e}")
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return {"error": str(e)}
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def __call__(self, data):
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print("[__call__] Invoked handler with data.")
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return self.predict(data)
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