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#!/usr/bin/env python
from __future__ import annotations
import enum
import gradio as gr
from huggingface_hub import HfApi
from inference import InferencePipeline
from utils import find_exp_dirs
SAMPLE_MODEL_IDS = [
'patrickvonplaten/lora_dreambooth_dog_example',
'sayakpaul/sd-model-finetuned-lora-t4',
]
class ModelSource(enum.Enum):
SAMPLE = 'Sample'
HUB_LIB = 'Hub (lora-library)'
LOCAL = 'Local'
class InferenceUtil:
def __init__(self, hf_token: str | None):
self.hf_token = hf_token
@staticmethod
def load_sample_lora_model_list():
return gr.update(choices=SAMPLE_MODEL_IDS, value=SAMPLE_MODEL_IDS[0])
def load_hub_lora_model_list(self) -> dict:
api = HfApi(token=self.hf_token)
choices = [
info.modelId for info in api.list_models(author='lora-library')
]
return gr.update(choices=choices,
value=choices[0] if choices else None)
@staticmethod
def load_local_lora_model_list() -> dict:
choices = find_exp_dirs()
return gr.update(choices=choices,
value=choices[0] if choices else None)
def reload_lora_model_list(self, model_source: str) -> dict:
if model_source == ModelSource.SAMPLE.value:
return self.load_sample_lora_model_list()
elif model_source == ModelSource.HUB_LIB.value:
return self.load_hub_lora_model_list()
elif model_source == ModelSource.LOCAL.value:
return self.load_local_lora_model_list()
else:
raise ValueError
def load_model_info(self, lora_model_id: str) -> tuple[str, str]:
try:
card = InferencePipeline.get_model_card(lora_model_id,
self.hf_token)
except Exception:
return '', ''
base_model = getattr(card.data, 'base_model', '')
instance_prompt = getattr(card.data, 'instance_prompt', '')
return base_model, instance_prompt
def reload_lora_model_list_and_update_model_info(
self, model_source: str) -> tuple[dict, str, str]:
model_list_update = self.reload_lora_model_list(model_source)
model_list = model_list_update['choices']
model_info = self.load_model_info(model_list[0] if model_list else '')
return model_list_update, *model_info
def create_inference_demo(pipe: InferencePipeline,
hf_token: str | None = None) -> gr.Blocks:
app = InferenceUtil(hf_token)
with gr.Blocks() as demo:
with gr.Row():
with gr.Column():
with gr.Box():
model_source = gr.Radio(
label='Model Source',
choices=[_.value for _ in ModelSource],
value=ModelSource.SAMPLE.value)
reload_button = gr.Button('Reload Model List')
lora_model_id = gr.Dropdown(label='LoRA Model ID',
choices=SAMPLE_MODEL_IDS,
value=SAMPLE_MODEL_IDS[0])
with gr.Accordion(
label=
'Model info (Base model and instance prompt used for training)',
open=False):
with gr.Row():
base_model_used_for_training = gr.Text(
label='Base model', interactive=False)
instance_prompt_used_for_training = gr.Text(
label='Instance prompt', interactive=False)
prompt = gr.Textbox(
label='Prompt',
max_lines=1,
placeholder='Example: "A picture of a sks dog in a bucket"'
)
alpha = gr.Slider(label='LoRA alpha',
minimum=0,
maximum=2,
step=0.05,
value=1)
seed = gr.Slider(label='Seed',
minimum=0,
maximum=100000,
step=1,
value=0)
with gr.Accordion('Other Parameters', open=False):
num_steps = gr.Slider(label='Number of Steps',
minimum=0,
maximum=100,
step=1,
value=25)
guidance_scale = gr.Slider(label='CFG Scale',
minimum=0,
maximum=50,
step=0.1,
value=7.5)
run_button = gr.Button('Generate')
gr.Markdown('''
- After training, you can press "Reload Model List" button to load your trained model names.
''')
with gr.Column():
result = gr.Image(label='Result')
model_source.change(
fn=app.reload_lora_model_list_and_update_model_info,
inputs=model_source,
outputs=[
lora_model_id,
base_model_used_for_training,
instance_prompt_used_for_training,
])
reload_button.click(
fn=app.reload_lora_model_list_and_update_model_info,
inputs=model_source,
outputs=[
lora_model_id,
base_model_used_for_training,
instance_prompt_used_for_training,
])
lora_model_id.change(fn=app.load_model_info,
inputs=lora_model_id,
outputs=[
base_model_used_for_training,
instance_prompt_used_for_training,
])
inputs = [
lora_model_id,
prompt,
alpha,
seed,
num_steps,
guidance_scale,
]
prompt.submit(fn=pipe.run, inputs=inputs, outputs=result)
run_button.click(fn=pipe.run, inputs=inputs, outputs=result)
return demo
if __name__ == '__main__':
import os
hf_token = os.getenv('HF_TOKEN')
pipe = InferencePipeline(hf_token)
demo = create_inference_demo(pipe, hf_token)
demo.queue(max_size=10).launch(share=False)
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