149 lines
6.8 KiB
Python
149 lines
6.8 KiB
Python
import io
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import json
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import wave
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import torch
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import numpy as np
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from PIL import Image
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from google import genai
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from google.genai import types
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from google.oauth2 import service_account
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class GeminiChatVertexNode:
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@classmethod
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def INPUT_TYPES(cls):
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return {
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"required": {
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"prompt": ("STRING", {"multiline": True}),
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"project_id": ("STRING", {"multiline": False, "default": ""}),
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"location": ([
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"global", "us-central1", "us-east1", "us-east4", "us-east5", "us-south1",
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"us-west1", "us-west2", "us-west3", "us-west4",
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"northamerica-northeast1", "northamerica-northeast2",
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"southamerica-east1", "southamerica-west1", "africa-south1",
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"europe-west1", "europe-north1", "europe-west2", "europe-west3",
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"europe-west4", "europe-west6", "europe-west8", "europe-west9",
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"europe-west12", "europe-southwest1", "europe-central2",
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"asia-east1", "asia-east2", "asia-northeast1", "asia-northeast2",
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"asia-northeast3", "asia-south1", "asia-south2", "asia-southeast1",
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"asia-southeast2", "australia-southeast1", "australia-southeast2",
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"me-central1", "me-central2", "me-west1"
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], {"default": "us-central1"}),
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"service_account": ("STRING", {"multiline": True, "default": ""}),
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"model": (["gemini-2.5-flash", "gemini-2.5-pro", "gemini-2.5-flash-lite", "gemini-3.5-flash", "gemini-3.1-pro-preview", "gemini-3.1-flash-lite-preview", "gemini-3-flash-preview", "gemini-flash-latest", "gemini-flash-lite-latest", "gemini-2.0-flash", "gemini-2.0-flash-lite"], {"default": "gemini-2.5-flash"}),
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"temperature": ("FLOAT", {"default": 0.2, "min": 0.0, "max": 2.0, "step": 0.1}),
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"top_p": ("FLOAT", {"default": 0.95, "min": 0.0, "max": 1.0, "step": 0.01}),
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"thinking": ("BOOLEAN", {"default": True}),
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"google_search": ("BOOLEAN", {"default": False}),
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"url_context": ("BOOLEAN", {"default": False}),
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"seed": ("INT", {"default": 69, "min": -1, "max": 2147483646, "step": 1}),
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},
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"optional": {
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"system_instruction": ("STRING", {"multiline": True, "default": ""}),
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"thinking_budget": ("INT", {"default": -1, "min": -1, "max": 24576, "step": 1}),
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"image": ("IMAGE",),
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"audio": ("AUDIO",),
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}
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}
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RETURN_TYPES = ("STRING",)
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RETURN_NAMES = ("response",)
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FUNCTION = "generate"
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CATEGORY = "text/generation"
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def setup_client(self, service_account_json, project_id, location):
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if not service_account_json.strip():
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raise ValueError("Service account JSON content is required.")
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if not project_id.strip():
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raise ValueError("Project ID is required.")
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try:
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sa_info = json.loads(service_account_json)
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except json.JSONDecodeError as e:
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raise ValueError(f"Invalid JSON content: {str(e)}")
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credentials = service_account.Credentials.from_service_account_info(
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sa_info,
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scopes=["https://www.googleapis.com/auth/cloud-platform"]
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)
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return genai.Client(
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vertexai=True,
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project=project_id.strip(),
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location=location.strip(),
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credentials=credentials,
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http_options=types.HttpOptions(
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retry_options=types.HttpRetryOptions(attempts=10, jitter=10)
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)
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)
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def generate(self, prompt, project_id, location, service_account, model, temperature, top_p,
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thinking, google_search, url_context, seed,
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system_instruction=None, thinking_budget=-1, image=None, audio=None):
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client = self.setup_client(service_account, project_id, location)
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parts = [types.Part.from_text(text=prompt)]
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if image is not None:
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for i in range(image.shape[0]):
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arr = (image[i].cpu().numpy() * 255).astype(np.uint8)
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buf = io.BytesIO()
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Image.fromarray(arr).save(buf, format="PNG")
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parts.append(types.Part.from_bytes(mime_type="image/png", data=buf.getvalue()))
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if audio is not None:
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wf = audio.get("waveform") if isinstance(audio, dict) else audio[0]
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sr = audio.get("sample_rate", 44100) if isinstance(audio, dict) else audio[1]
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wf = wf.cpu().numpy() if isinstance(wf, torch.Tensor) else wf
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if wf.ndim > 1: wf = wf.mean(axis=0) if wf.shape[0] > 1 else wf.squeeze()
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wf_int16 = (np.clip(wf, -1, 1) * 32767).astype(np.int16)
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buf = io.BytesIO()
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with wave.open(buf, 'wb') as w:
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w.setnchannels(1); w.setsampwidth(2); w.setframerate(sr)
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w.writeframes(wf_int16.tobytes())
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parts.append(types.Part.from_bytes(mime_type="audio/wav", data=buf.getvalue()))
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model_lower = model.lower()
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t_config = None
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if "gemini-2.0" in model_lower:
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print("Gemini-2.0 models do not support thinking - disabling thinking config")
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else:
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final_budget = 0
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if not thinking:
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if "gemini-2.5-pro" in model_lower or "gemini-3.1-pro-preview" in model_lower:
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print("Pro models cannot have thinking turned off - defaulting thinking budget to -1")
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final_budget = -1
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else:
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final_budget = thinking_budget
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if ("gemini-2.5-pro" in model_lower or "gemini-3.1-pro-preview" in model_lower) and final_budget == 0:
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print("Pro models cannot have thinking turned off - defaulting thinking budget to -1")
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final_budget = -1
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t_config = types.ThinkingConfig(thinking_budget=final_budget)
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tools = []
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if google_search: tools.append(types.Tool(googleSearch=types.GoogleSearch()))
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if url_context: tools.append(types.Tool(url_context=types.UrlContext()))
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config = types.GenerateContentConfig(
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temperature=temperature,
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top_p=top_p,
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seed=seed,
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system_instruction=system_instruction.strip() if system_instruction else None,
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thinking_config=t_config,
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tools=tools if tools else None
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)
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response = client.models.generate_content(
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model=model,
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contents=[types.Content(role="user", parts=parts)],
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config=config
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)
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return (response.text,)
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NODE_CLASS_MAPPINGS = {"GeminiChatVertexNode": GeminiChatVertexNode}
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NODE_DISPLAY_NAME_MAPPINGS = {"GeminiChatVertexNode": "Gemini Chat (Vertex AI)"} |