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Update app.py
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app.py
CHANGED
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@@ -13,12 +13,12 @@ bert_tokenizer = AutoTokenizer.from_pretrained(bert_model_name)
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bert_model = AutoModel.from_pretrained(bert_model_name)
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bert_model.eval() # Setze das Modell in den Evaluationsmodus
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# Lade T5 Rezeptgenerierungsmodell
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MODEL_NAME_OR_PATH = "flax-community/t5-recipe-generation"
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t5_tokenizer = AutoTokenizer.from_pretrained(MODEL_NAME_OR_PATH, use_fast=True)
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t5_model = FlaxAutoModelForSeq2SeqLM.from_pretrained(MODEL_NAME_OR_PATH) # Modell wird jetzt auch geladen
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# Token Mapping für die T5 Modell-Ausgabe
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special_tokens = t5_tokenizer.all_special_tokens
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tokens_map = {
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"<sep>": "--",
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@@ -92,36 +92,163 @@ def find_best_ingredients(required_ingredients, available_ingredients, max_ingre
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return final_ingredients[:max_ingredients]
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#
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def
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"""
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return {
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"title":
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"ingredients":
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"directions": [
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"Dies ist ein Testrezept.",
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"RecipeBERT und T5-Modell wurden beide erfolgreich geladen!",
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"Die Zutaten wurden mit RecipeBERT-Intelligenz ausgewählt.",
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f"Basierend auf deinen Eingaben wurde '{ingredients_list[-1]}' als ähnlichste Zutat hinzugefügt." if len(ingredients_list) > 1 else "Keine zusätzliche Zutat hinzugefügt."
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],
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"used_ingredients": ingredients_list
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}
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def process_recipe_request_logic(required_ingredients, available_ingredients, max_ingredients, max_retries):
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"""
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Kernlogik zur Verarbeitung einer Rezeptgenerierungsanfrage.
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"""
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if not required_ingredients and not available_ingredients:
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return {"error": "Keine Zutaten angegeben"}
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try:
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optimized_ingredients = find_best_ingredients(
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required_ingredients,
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)
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result = {
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'title': recipe['title'],
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'ingredients': recipe['ingredients'],
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@@ -129,11 +256,13 @@ def process_recipe_request_logic(required_ingredients, available_ingredients, ma
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'used_ingredients': optimized_ingredients
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}
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return result
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except Exception as e:
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return {"error": f"Fehler bei der Rezeptgenerierung: {str(e)}"}
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# --- FastAPI-Implementierung ---
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app = FastAPI(title="AI Recipe Generator API (
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class RecipeRequest(BaseModel):
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required_ingredients: list[str] = []
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@@ -158,6 +287,6 @@ async def generate_recipe_api(request_data: RecipeRequest):
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@app.get("/")
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async def read_root():
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return {"message": "AI Recipe Generator API is running (
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print("INFO: FastAPI application script finished execution and defined 'app' variable.")
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bert_model = AutoModel.from_pretrained(bert_model_name)
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bert_model.eval() # Setze das Modell in den Evaluationsmodus
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# Lade T5 Rezeptgenerierungsmodell
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MODEL_NAME_OR_PATH = "flax-community/t5-recipe-generation"
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t5_tokenizer = AutoTokenizer.from_pretrained(MODEL_NAME_OR_PATH, use_fast=True)
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t5_model = FlaxAutoModelForSeq2SeqLM.from_pretrained(MODEL_NAME_OR_PATH) # Modell wird jetzt auch geladen
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# Token Mapping für die T5 Modell-Ausgabe
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special_tokens = t5_tokenizer.all_special_tokens
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tokens_map = {
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"<sep>": "--",
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return final_ingredients[:max_ingredients]
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# skip_special_tokens (unverändert, wird von generate_recipe_with_t5 genutzt)
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def skip_special_tokens(text, special_tokens):
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"""Entfernt spezielle Tokens aus dem Text"""
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for token in special_tokens:
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text = text.replace(token, "")
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return text
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# target_postprocessing (unverändert, wird von generate_recipe_with_t5 genutzt)
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def target_postprocessing(texts, special_tokens):
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"""Post-processed generierten Text"""
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if not isinstance(texts, list):
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texts = [texts]
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new_texts = []
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for text in texts:
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text = skip_special_tokens(text, special_tokens)
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for k, v in tokens_map.items():
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text = text.replace(k, v)
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new_texts.append(text)
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return new_texts
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# validate_recipe_ingredients (unverändert, wird von generate_recipe_with_t5 genutzt)
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def validate_recipe_ingredients(recipe_ingredients, expected_ingredients, tolerance=0):
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"""
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Validiert, ob das Rezept ungefähr die erwarteten Zutaten enthält.
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"""
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recipe_count = len([ing for ing in recipe_ingredients if ing and ing.strip()])
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expected_count = len(expected_ingredients)
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return abs(recipe_count - expected_count) == tolerance
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# generate_recipe_with_t5 (jetzt AKTIVIERT)
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def generate_recipe_with_t5(ingredients_list, max_retries=5):
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"""Generiert ein Rezept mit dem T5 Rezeptgenerierungsmodell mit Validierung."""
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original_ingredients = ingredients_list.copy()
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for attempt in range(max_retries):
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try:
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# Für Wiederholungsversuche nach dem ersten Versuch, mische die Zutaten
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if attempt > 0:
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current_ingredients = original_ingredients.copy()
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random.shuffle(current_ingredients)
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else:
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current_ingredients = ingredients_list
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# Formatiere Zutaten als kommaseparierten String
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ingredients_string = ", ".join(current_ingredients)
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prefix = "items: "
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# Generationseinstellungen
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generation_kwargs = {
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"max_length": 512,
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"min_length": 64,
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"do_sample": True,
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"top_k": 60,
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"top_p": 0.95
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}
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# print(f"Versuch {attempt + 1}: {prefix + ingredients_string}")
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# Tokenisiere Eingabe
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inputs = t5_tokenizer(
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prefix + ingredients_string,
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max_length=256,
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padding="max_length",
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truncation=True,
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return_tensors="jax"
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)
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# Generiere Text
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output_ids = t5_model.generate(
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input_ids=inputs.input_ids,
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attention_mask=inputs.attention_mask,
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**generation_kwargs
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)
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# Dekodieren und Nachbearbeiten
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generated = output_ids.sequences
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generated_text = target_postprocessing(
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t5_tokenizer.batch_decode(generated, skip_special_tokens=False),
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special_tokens
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)[0]
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# Abschnitte parsen
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recipe = {}
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sections = generated_text.split("\n")
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for section in sections:
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section = section.strip()
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if section.startswith("title:"):
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recipe["title"] = section.replace("title:", "").strip().capitalize()
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elif section.startswith("ingredients:"):
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ingredients_text = section.replace("ingredients:", "").strip()
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recipe["ingredients"] = [item.strip().capitalize() for item in ingredients_text.split("--") if item.strip()]
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elif section.startswith("directions:"):
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directions_text = section.replace("directions:", "").strip()
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recipe["directions"] = [step.strip().capitalize() for step in directions_text.split("--") if step.strip()]
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# Wenn der Titel fehlt, erstelle einen
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if "title" not in recipe:
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recipe["title"] = f"Rezept mit {', '.join(current_ingredients[:3])}"
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# Stelle sicher, dass alle Abschnitte existieren
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if "ingredients" not in recipe:
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recipe["ingredients"] = current_ingredients
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if "directions" not in recipe:
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recipe["directions"] = ["Keine Anweisungen generiert"]
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# Validiere das Rezept
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if validate_recipe_ingredients(recipe["ingredients"], original_ingredients):
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# print(f"Erfolg bei Versuch {attempt + 1}: Rezept hat die richtige Anzahl von Zutaten")
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return recipe
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else:
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# print(f"Versuch {attempt + 1} fehlgeschlagen: Erwartet {len(original_ingredients)} Zutaten, erhalten {len(recipe['ingredients'])}")
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if attempt == max_retries - 1:
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# print("Maximale Wiederholungsversuche erreicht, letztes generiertes Rezept wird zurückgegeben")
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return recipe
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except Exception as e:
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# print(f"Fehler bei der Rezeptgenerierung Versuch {attempt + 1}: {str(e)}")
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if attempt == max_retries - 1:
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return {
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"title": f"Rezept mit {original_ingredients[0] if original_ingredients else 'Zutaten'}",
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"ingredients": original_ingredients,
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"directions": ["Fehler beim Generieren der Rezeptanweisungen"]
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}
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# Fallback (sollte nicht erreicht werden)
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return {
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"title": f"Rezept mit {original_ingredients[0] if original_ingredients else 'Zutaten'}",
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"ingredients": original_ingredients,
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"directions": ["Fehler beim Generieren der Rezeptanweisungen"]
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}
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# process_recipe_request_logic (JETZT RUFT generate_recipe_with_t5 auf)
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def process_recipe_request_logic(required_ingredients, available_ingredients, max_ingredients, max_retries):
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"""
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Kernlogik zur Verarbeitung einer Rezeptgenerierungsanfrage.
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Ausgelagert, um von verschiedenen Endpunkten aufgerufen zu werden.
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"""
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if not required_ingredients and not available_ingredients:
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return {"error": "Keine Zutaten angegeben"}
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try:
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# Optimale Zutaten finden (mit RecipeBERT)
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optimized_ingredients = find_best_ingredients(
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required_ingredients,
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available_ingredients,
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max_ingredients
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# Rezept mit optimierten Zutaten generieren (JETZT MIT T5!)
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recipe = generate_recipe_with_t5(optimized_ingredients, max_retries)
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# Ergebnis formatieren
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result = {
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'title': recipe['title'],
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'ingredients': recipe['ingredients'],
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'used_ingredients': optimized_ingredients
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}
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return result
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except Exception as e:
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return {"error": f"Fehler bei der Rezeptgenerierung: {str(e)}"}
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# --- FastAPI-Implementierung ---
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app = FastAPI(title="AI Recipe Generator API (Full Functionality)")
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class RecipeRequest(BaseModel):
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required_ingredients: list[str] = []
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@app.get("/")
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async def read_root():
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return {"message": "AI Recipe Generator API is running (Full functionality activated)!"} # Angepasste Nachricht
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print("INFO: FastAPI application script finished execution and defined 'app' variable.")
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