Backend side merge API

ui/easydiffusion/server.py

@@ -13,7 +13,7 @@ from starlette.responses import FileResponse, JSONResponse, StreamingResponse
 from pydantic import BaseModel
 
 from easydiffusion import app, model_manager, task_manager
-from easydiffusion.types import TaskData, GenerateImageRequest
+from easydiffusion.types import TaskData, GenerateImageRequest, MergeRequest
 from easydiffusion.utils import log
 
 log.info(f'started in {app.SD_DIR}')
@@ -61,6 +61,11 @@ def init():
     def render(req: dict):
         return render_internal(req)
 
+    @server_api.post('/model/merge')
+    def model_merge(req: dict):
+        print(req)
+        return model_merge_internal(req)
+
     @server_api.get('/image/stream/{task_id:int}')
     def stream(task_id:int):
         return stream_internal(task_id)
@@ -181,6 +186,25 @@ def render_internal(req: dict):
         log.error(traceback.format_exc())
         raise HTTPException(status_code=500, detail=str(e))
 
+def model_merge_internal(req: dict):
+    try:
+        from sdkit.train.merge_models import merge_models
+        from easydiffusion.utils.save_utils import filename_regex
+        mergeReq: MergeRequest = MergeRequest.parse_obj(req)
+        print('model_merge_internal')
+        print(mergeReq)
+        
+        merge_models(model_manager.resolve_model_to_use(mergeReq.model0,'stable-diffusion'), 
+           model_manager.resolve_model_to_use(mergeReq.model1,'stable-diffusion'), 
+           mergeReq.ratio, 
+           os.path.join(app.MODELS_DIR, 'stable-diffusion', filename_regex.sub('_', mergeReq.out_path)), 
+           mergeReq.use_fp16
+        )
+        return JSONResponse({'status':'OK'}, headers=NOCACHE_HEADERS)
+    except Exception as e:
+        log.error(traceback.format_exc())
+        raise HTTPException(status_code=500, detail=str(e))
+
 def stream_internal(task_id:int):
     #TODO Move to WebSockets ??
     task = task_manager.get_cached_task(task_id, update_ttl=True)

ui/easydiffusion/types.py

@@ -40,6 +40,13 @@ class TaskData(BaseModel):
     metadata_output_format: str = "txt" # or "json"
     stream_image_progress: bool = False
 
+class MergeRequest(BaseModel):
+    model0: str = None
+    model1: str = None
+    ratio: float = None
+    out_path: str = "mix"
+    use_fp16 = True
+
 class Image:
     data: str # base64
     seed: int

ui/easydiffusion/utils/save_utils.py

@@ -7,7 +7,7 @@ from easydiffusion.types import TaskData, GenerateImageRequest
 
 from sdkit.utils import save_images, save_dicts
 
-filename_regex = re.compile('[^a-zA-Z0-9]')
+filename_regex = re.compile('[^a-zA-Z0-9._-]')
 
 # keep in sync with `ui/media/js/dnd.js`
 TASK_TEXT_MAPPING = {