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| import json | |
| from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer | |
| from threading import Thread | |
| from extensions.api.util import build_parameters, try_start_cloudflared | |
| from modules import shared | |
| from modules.chat import generate_chat_reply | |
| from modules.LoRA import add_lora_to_model | |
| from modules.models import load_model, unload_model | |
| from modules.models_settings import get_model_metadata, update_model_parameters | |
| from modules.text_generation import ( | |
| encode, | |
| generate_reply, | |
| stop_everything_event | |
| ) | |
| from modules.utils import get_available_models | |
| def get_model_info(): | |
| return { | |
| 'model_name': shared.model_name, | |
| 'lora_names': shared.lora_names, | |
| # dump | |
| 'shared.settings': shared.settings, | |
| 'shared.args': vars(shared.args), | |
| } | |
| class Handler(BaseHTTPRequestHandler): | |
| def do_GET(self): | |
| if self.path == '/api/v1/model': | |
| self.send_response(200) | |
| self.end_headers() | |
| response = json.dumps({ | |
| 'result': shared.model_name | |
| }) | |
| self.wfile.write(response.encode('utf-8')) | |
| else: | |
| self.send_error(404) | |
| def do_POST(self): | |
| content_length = int(self.headers['Content-Length']) | |
| body = json.loads(self.rfile.read(content_length).decode('utf-8')) | |
| if self.path == '/api/v1/generate': | |
| self.send_response(200) | |
| self.send_header('Content-Type', 'application/json') | |
| self.end_headers() | |
| prompt = body['prompt'] | |
| generate_params = build_parameters(body) | |
| stopping_strings = generate_params.pop('stopping_strings') | |
| generate_params['stream'] = False | |
| generator = generate_reply( | |
| prompt, generate_params, stopping_strings=stopping_strings, is_chat=False) | |
| answer = '' | |
| for a in generator: | |
| answer = a | |
| response = json.dumps({ | |
| 'results': [{ | |
| 'text': answer | |
| }] | |
| }) | |
| self.wfile.write(response.encode('utf-8')) | |
| elif self.path == '/api/v1/chat': | |
| self.send_response(200) | |
| self.send_header('Content-Type', 'application/json') | |
| self.end_headers() | |
| user_input = body['user_input'] | |
| regenerate = body.get('regenerate', False) | |
| _continue = body.get('_continue', False) | |
| generate_params = build_parameters(body, chat=True) | |
| generate_params['stream'] = False | |
| generator = generate_chat_reply( | |
| user_input, generate_params, regenerate=regenerate, _continue=_continue, loading_message=False) | |
| answer = generate_params['history'] | |
| for a in generator: | |
| answer = a | |
| response = json.dumps({ | |
| 'results': [{ | |
| 'history': answer | |
| }] | |
| }) | |
| self.wfile.write(response.encode('utf-8')) | |
| elif self.path == '/api/v1/stop-stream': | |
| self.send_response(200) | |
| self.send_header('Content-Type', 'application/json') | |
| self.end_headers() | |
| stop_everything_event() | |
| response = json.dumps({ | |
| 'results': 'success' | |
| }) | |
| self.wfile.write(response.encode('utf-8')) | |
| elif self.path == '/api/v1/model': | |
| self.send_response(200) | |
| self.send_header('Content-Type', 'application/json') | |
| self.end_headers() | |
| # by default return the same as the GET interface | |
| result = shared.model_name | |
| # Actions: info, load, list, unload | |
| action = body.get('action', '') | |
| if action == 'load': | |
| model_name = body['model_name'] | |
| args = body.get('args', {}) | |
| print('args', args) | |
| for k in args: | |
| setattr(shared.args, k, args[k]) | |
| shared.model_name = model_name | |
| unload_model() | |
| model_settings = get_model_metadata(shared.model_name) | |
| shared.settings.update({k: v for k, v in model_settings.items() if k in shared.settings}) | |
| update_model_parameters(model_settings, initial=True) | |
| if shared.settings['mode'] != 'instruct': | |
| shared.settings['instruction_template'] = None | |
| try: | |
| shared.model, shared.tokenizer = load_model(shared.model_name) | |
| if shared.args.lora: | |
| add_lora_to_model(shared.args.lora) # list | |
| except Exception as e: | |
| response = json.dumps({'error': {'message': repr(e)}}) | |
| self.wfile.write(response.encode('utf-8')) | |
| raise e | |
| shared.args.model = shared.model_name | |
| result = get_model_info() | |
| elif action == 'unload': | |
| unload_model() | |
| shared.model_name = None | |
| shared.args.model = None | |
| result = get_model_info() | |
| elif action == 'list': | |
| result = get_available_models() | |
| elif action == 'info': | |
| result = get_model_info() | |
| response = json.dumps({ | |
| 'result': result, | |
| }) | |
| self.wfile.write(response.encode('utf-8')) | |
| elif self.path == '/api/v1/token-count': | |
| self.send_response(200) | |
| self.send_header('Content-Type', 'application/json') | |
| self.end_headers() | |
| tokens = encode(body['prompt'])[0] | |
| response = json.dumps({ | |
| 'results': [{ | |
| 'tokens': len(tokens) | |
| }] | |
| }) | |
| self.wfile.write(response.encode('utf-8')) | |
| else: | |
| self.send_error(404) | |
| def do_OPTIONS(self): | |
| self.send_response(200) | |
| self.end_headers() | |
| def end_headers(self): | |
| self.send_header('Access-Control-Allow-Origin', '*') | |
| self.send_header('Access-Control-Allow-Methods', '*') | |
| self.send_header('Access-Control-Allow-Headers', '*') | |
| self.send_header('Cache-Control', 'no-store, no-cache, must-revalidate') | |
| super().end_headers() | |
| def _run_server(port: int, share: bool = False, tunnel_id=str): | |
| address = '0.0.0.0' if shared.args.listen else '127.0.0.1' | |
| server = ThreadingHTTPServer((address, port), Handler) | |
| def on_start(public_url: str): | |
| print(f'Starting non-streaming server at public url {public_url}/api') | |
| if share: | |
| try: | |
| try_start_cloudflared(port, tunnel_id, max_attempts=3, on_start=on_start) | |
| except Exception: | |
| pass | |
| else: | |
| print( | |
| f'Starting API at http://{address}:{port}/api') | |
| server.serve_forever() | |
| def start_server(port: int, share: bool = False, tunnel_id=str): | |
| Thread(target=_run_server, args=[port, share, tunnel_id], daemon=True).start() | |