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handler.py

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+from typing import Dict, List, Any
+# import transformers
+# from transformers import AutoTokenizer
+# import torch
+from datetime import datetime
+
+
+
+
+import requests
+from PIL import Image
+from transformers import Blip2Processor, Blip2ForConditionalGeneration
+
+
+class EndpointHandler():
+    
+    def __init__(self, path=""):
+        
+        self.processor = Blip2Processor.from_pretrained(path)
+        self.model = Blip2ForConditionalGeneration.from_pretrained(path, device_map="auto")
+
+        # device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
+        # self.model.eval()
+        # self.model.to(device=device, dtype=self.torch_dtype)
+        
+        # self.generate_kwargs = {
+        #     'max_new_tokens': 512,
+        #     'temperature': 0.0001,
+        #     'top_p': 1.0,
+        #     'top_k': 0,
+        #     'use_cache': True,
+        #     'do_sample': True,
+        #     'eos_token_id': self.tokenizer.eos_token_id,
+        #     'pad_token_id': self.tokenizer.pad_token_id,
+        #     "repetition_penalty": 1.1
+        # }
+    
+    def __call__(self, data: Dict[str, Any]) -> List[Dict[str, Any]]:
+        """
+       data args:
+            inputs (:obj: `str` | `PIL.Image` | `np.array`)
+            kwargs
+      Return:
+            A :obj:`list` | `dict`: will be serialized and returned
+        """
+
+        # streamer = TextIteratorStreamer(
+        # self.tokenizer, timeout=10.0, skip_prompt=True, skip_special_tokens=True
+        # )
+        
+        ## Model Parameters
+        # self.generate_kwargs['max_new_tokens'] = data['max_new_tokens'] if 'max_new_tokens' in data else self.generate_kwargs['max_new_tokens']
+        # self.generate_kwargs['temperature'] = data['temperature'] if 'temperature' in data else self.generate_kwargs['temperature']
+        # self.generate_kwargs['top_p'] = data['top_p'] if 'top_p' in data else self.generate_kwargs['top_p']
+        # self.generate_kwargs['top_k'] = data['top_k'] if 'top_k' in data else self.generate_kwargs['top_k']
+        # self.generate_kwargs['do_sample'] = data['do_sample'] if 'do_sample' in data else self.generate_kwargs['do_sample']
+        # self.generate_kwargs['repetition_penalty'] = data['repetition_penalty'] if 'repetition_penalty' in data else self.generate_kwargs['repetition_penalty']
+        
+        
+        ## Prepare the inputs
+        # inputs = data.pop("inputs",data)
+        # input_ids = self.tokenizer(inputs, return_tensors="pt").input_ids
+        # input_ids = input_ids.to(self.model.device)
+
+
+        # pip install accelerate
+        
+        img_url = 'https://storage.googleapis.com/sfr-vision-language-research/BLIP/demo.jpg' 
+
+        now = datetime.now()
+
+        raw_image = Image.open(requests.get(img_url, stream=True).raw).convert('RGB')
+        
+        question = "how many dogs are in the picture?"
+        inputs = self.processor(raw_image, question, return_tensors="pt").to("cuda")
+        
+        out = self.model.generate(**inputs)
+        output_text = self.processor.decode(out[0], skip_special_tokens=True)
+
+        current = datetime.now()
+
+        # encoded_inp = self.tokenizer(inputs, return_tensors='pt', padding=True)
+        # for key, value in encoded_inp.items():
+        #     encoded_inp[key] = value.to('cuda:0')
+
+        ## Invoke the model     
+        # with torch.no_grad():
+        #     gen_tokens =  self.model.generate(
+        #         input_ids=encoded_inp['input_ids'],
+        #         attention_mask=encoded_inp['attention_mask'],
+        #         **generate_kwargs,
+        #     )
+
+        # ## Decode using tokenizer
+        # decoded_gen = self.tokenizer.batch_decode(gen_tokens, skip_special_tokens=True)        
+
+        # with torch.no_grad():
+        #     output_ids = self.model.generate(input_ids, **self.generate_kwargs)
+        # # Slice the output_ids tensor to get only new tokens
+        # new_tokens = output_ids[0, len(input_ids[0]) :]
+        # output_text = self.tokenizer.decode(new_tokens, skip_special_tokens=True)
+        
+        return [{"gen_text":output_text, "time_elapsed": str(current-now)}]

requirements.txt

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+Pillow
+requests
+accelerate
+torch
+transformers