| 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_settings_from_yamls, |
| 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, |
| |
| '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() |
|
|
| |
| result = shared.model_name |
|
|
| |
| 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_settings_from_yamls(shared.model_name) |
| shared.settings.update(model_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) |
|
|
| 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() |
|
|
