Merge pull request #342 from mayaeary/koboldai-api

Extension: KoboldAI api

extensions/api/script.py

@@ -0,0 +1,82 @@
+from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
+from threading import Thread
+from modules import shared
+from modules.text_generation import generate_reply, encode
+import json
+
+params = {
+    'port': 5000,
+}
+
+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']
+            prompt_lines = [l.strip() for l in prompt.split('\n')]
+
+            max_context = body.get('max_context_length', 2048)
+
+            while len(prompt_lines) >= 0 and len(encode('\n'.join(prompt_lines))) > max_context:
+                prompt_lines.pop(0)
+
+            prompt = '\n'.join(prompt_lines)
+
+            generator = generate_reply(
+                question = prompt, 
+                max_new_tokens = body.get('max_length', 200), 
+                do_sample=True, 
+                temperature=body.get('temperature', 0.5), 
+                top_p=body.get('top_p', 1), 
+                typical_p=body.get('typical', 1), 
+                repetition_penalty=body.get('rep_pen', 1.1), 
+                encoder_repetition_penalty=1, 
+                top_k=body.get('top_k', 0), 
+                min_length=0, 
+                no_repeat_ngram_size=0, 
+                num_beams=1, 
+                penalty_alpha=0, 
+                length_penalty=1,
+                early_stopping=False,
+            )
+
+            answer = ''
+            for a in generator:
+                answer = a[0]
+
+            response = json.dumps({
+                'results': [{
+                    'text': answer[len(prompt):]
+                }]
+            })
+            self.wfile.write(response.encode('utf-8'))
+        else:
+            self.send_error(404)
+
+
+def run_server():
+    server_addr = ('0.0.0.0' if shared.args.listen else '127.0.0.1', params['port'])
+    server = ThreadingHTTPServer(server_addr, Handler)
+    print(f'Starting KoboldAI compatible api at http://{server_addr[0]}:{server_addr[1]}/api')
+    server.serve_forever()
+
+def ui():
+    Thread(target=run_server, daemon=True).start()