Create app.py

app.py

@@ -0,0 +1,67 @@
+import argparse
+import base64
+import os
+from pathlib import Path
+from io import BytesIO
+import time
+
+from flask import Flask, request, jsonify
+from flask_cors import CORS, cross_origin
+from consts import IMAGES_OUTPUT_DIR
+from utils import parse_arg_boolean, parse_arg_dalle_version
+from consts import ModelSize
+
+app = Flask(__name__)
+CORS(app)
+print("--> Starting DALL-E Server. This might take up to two minutes.")
+
+from dalle_model import DalleModel
+dalle_model = None
+
+parser = argparse.ArgumentParser(description = "A DALL-E app to turn your textual prompts into visionary delights")
+parser.add_argument("--port", type=int, default=8000, help = "backend port")
+parser.add_argument("--model_version", type = parse_arg_dalle_version, default = ModelSize.MINI, help = "Mini, Mega, or Mega_full")
+parser.add_argument("--save_to_disk", type = parse_arg_boolean, default = False, help = "Should save generated images to disk")
+args = parser.parse_args()
+
+@app.route("/dalle", methods=["POST"])
+@cross_origin()
+def generate_images_api():
+    json_data = request.get_json(force=True)
+    text_prompt = json_data["text"]
+    num_images = json_data["num_images"]
+    generated_imgs = dalle_model.generate_images(text_prompt, num_images)
+
+    generated_images = []
+    if args.save_to_disk: 
+        dir_name = os.path.join(IMAGES_OUTPUT_DIR,f"{time.strftime('%Y-%m-%d_%H:%M:%S')}_{text_prompt}")
+        Path(dir_name).mkdir(parents=True, exist_ok=True)
+    
+    for idx, img in enumerate(generated_imgs):
+        if args.save_to_disk: 
+            img.save(os.path.join(dir_name, f'{idx}.jpeg'), format="JPEG")
+
+        buffered = BytesIO()
+        img.save(buffered, format="JPEG")
+        img_str = base64.b64encode(buffered.getvalue()).decode("utf-8")
+        generated_images.append(img_str)
+
+    print(f"Created {num_images} images from text prompt [{text_prompt}]")
+    return jsonify(generated_images)
+
+
+@app.route("/", methods=["GET"])
+@cross_origin()
+def health_check():
+    return jsonify(success=True)
+
+
+with app.app_context():
+    dalle_model = DalleModel(args.model_version)
+    dalle_model.generate_images("warm-up", 1)
+    print("--> DALL-E Server is up and running!")
+    print(f"--> Model selected - DALL-E {args.model_version}")
+
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=args.port, debug=False)