mirror of
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[extensions/openai] various fixes (#2533)
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matatonic
GitHub
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@ -20,6 +20,12 @@ Example:
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SD_WEBUI_URL=http://127.0.0.1:7861
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```
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Make sure you enable it in server launch parameters. Just make sure they include:
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```
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--extensions openai
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```
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### Embeddings (alpha)
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Embeddings requires ```sentence-transformers``` installed, but chat and completions will function without it loaded. The embeddings endpoint is currently using the HuggingFace model: ```sentence-transformers/all-mpnet-base-v2``` for embeddings. This produces 768 dimensional embeddings (the same as the text-davinci-002 embeddings), which is different from OpenAI's current default ```text-embedding-ada-002``` model which produces 1536 dimensional embeddings. The model is small-ish and fast-ish. This model and embedding size may change in the future.
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@ -42,7 +48,7 @@ Almost everything you use it with will require you to set a dummy OpenAI API key
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With the [official python openai client](https://github.com/openai/openai-python), you can set the OPENAI_API_BASE environment variable before you import the openai module, like so:
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```
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OPENAI_API_KEY=dummy
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OPENAI_API_KEY=sk-dummy
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OPENAI_API_BASE=http://127.0.0.1:5001/v1
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```
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@ -20,6 +20,7 @@ params = {
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debug = True if 'OPENEDAI_DEBUG' in os.environ else False
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# Slightly different defaults for OpenAI's API
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# Data type is important, Ex. use 0.0 for a float 0
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default_req_params = {
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'max_new_tokens': 200,
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'temperature': 1.0,
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@ -44,14 +45,14 @@ default_req_params = {
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'no_repeat_ngram_size': 0,
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'num_beams': 1,
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'penalty_alpha': 0.0,
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'length_penalty': 1,
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'length_penalty': 1.0,
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'early_stopping': False,
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'mirostat_mode': 0,
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'mirostat_tau': 5,
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'mirostat_tau': 5.0,
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'mirostat_eta': 0.1,
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'ban_eos_token': False,
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'skip_special_tokens': True,
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'custom_stopping_strings': [],
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'custom_stopping_strings': ['\n###'],
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}
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# Optional, install the module and download the model to enable
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@ -64,8 +65,6 @@ except ImportError:
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st_model = os.environ["OPENEDAI_EMBEDDING_MODEL"] if "OPENEDAI_EMBEDDING_MODEL" in os.environ else "all-mpnet-base-v2"
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embedding_model = None
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standard_stopping_strings = ['\nsystem:', '\nuser:', '\nhuman:', '\nassistant:', '\n###', ]
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# little helper to get defaults if arg is present but None and should be the same type as default.
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def default(dic, key, default):
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val = dic.get(key, default)
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@ -86,31 +85,6 @@ def clamp(value, minvalue, maxvalue):
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return max(minvalue, min(value, maxvalue))
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def deduce_template():
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# Alpaca is verbose so a good default prompt
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default_template = (
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"Below is an instruction that describes a task, paired with an input that provides further context. "
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"Write a response that appropriately completes the request.\n\n"
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"### Instruction:\n{instruction}\n\n### Input:\n{input}\n\n### Response:\n"
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)
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# Use the special instruction/input/response template for anything trained like Alpaca
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if shared.settings['instruction_template'] in ['Alpaca', 'Alpaca-Input']:
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return default_template
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try:
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instruct = yaml.safe_load(open(f"characters/instruction-following/{shared.settings['instruction_template']}.yaml", 'r'))
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template = instruct['turn_template']
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template = template\
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.replace('<|user|>', instruct.get('user', ''))\
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.replace('<|bot|>', instruct.get('bot', ''))\
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.replace('<|user-message|>', '{instruction}\n{input}')
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return instruct.get('context', '') + template[:template.find('<|bot-message|>')].rstrip(' ')
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except:
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return default_template
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def float_list_to_base64(float_list):
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# Convert the list to a float32 array that the OpenAPI client expects
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float_array = np.array(float_list, dtype="float32")
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@ -141,6 +115,25 @@ class Handler(BaseHTTPRequestHandler):
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"Authorization"
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)
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def openai_error(self, message, code = 500, error_type = 'APIError', param = '', internal_message = ''):
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self.send_response(code)
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self.send_access_control_headers()
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self.send_header('Content-Type', 'application/json')
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self.end_headers()
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error_resp = {
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'error': {
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'message': message,
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'code': code,
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'type': error_type,
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'param': param,
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}
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}
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if internal_message:
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error_resp['internal_message'] = internal_message
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response = json.dumps(error_resp)
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self.wfile.write(response.encode('utf-8'))
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def do_OPTIONS(self):
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self.send_response(200)
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self.send_access_control_headers()
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@ -150,42 +143,24 @@ class Handler(BaseHTTPRequestHandler):
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def do_GET(self):
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if self.path.startswith('/v1/models'):
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self.send_response(200)
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self.send_access_control_headers()
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self.send_header('Content-Type', 'application/json')
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self.end_headers()
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# TODO: list all models and allow model changes via API? Lora's?
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# TODO: Lora's?
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# This API should list capabilities, limits and pricing...
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models = [{
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"id": shared.model_name, # The real chat/completions model
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"object": "model",
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"owned_by": "user",
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"permission": []
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}, {
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"id": st_model, # The real sentence transformer embeddings model
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"object": "model",
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"owned_by": "user",
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"permission": []
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}, { # these are expected by so much, so include some here as a dummy
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"id": "gpt-3.5-turbo", # /v1/chat/completions
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"object": "model",
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"owned_by": "user",
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"permission": []
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}, {
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"id": "text-curie-001", # /v1/completions, 2k context
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"object": "model",
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"owned_by": "user",
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"permission": []
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}, {
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"id": "text-davinci-002", # /v1/embeddings text-embedding-ada-002:1536, text-davinci-002:768
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"object": "model",
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"owned_by": "user",
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"permission": []
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}]
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current_model_list = [ shared.model_name ] # The real chat/completions model
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embeddings_model_list = [ st_model ] if embedding_model else [] # The real sentence transformer embeddings model
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pseudo_model_list = [ # these are expected by so much, so include some here as a dummy
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'gpt-3.5-turbo', # /v1/chat/completions
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'text-curie-001', # /v1/completions, 2k context
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'text-davinci-002' # /v1/embeddings text-embedding-ada-002:1536, text-davinci-002:768
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]
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available_model_list = get_available_models()
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all_model_list = current_model_list + embeddings_model_list + pseudo_model_list + available_model_list
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models.extend([{ "id": id, "object": "model", "owned_by": "user", "permission": [] } for id in get_available_models() ])
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models = [{ "id": id, "object": "model", "owned_by": "user", "permission": [] } for id in all_model_list ]
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response = ''
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if self.path == '/v1/models':
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@ -203,6 +178,7 @@ class Handler(BaseHTTPRequestHandler):
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})
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self.wfile.write(response.encode('utf-8'))
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elif '/billing/usage' in self.path:
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# Ex. /v1/dashboard/billing/usage?start_date=2023-05-01&end_date=2023-05-31
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self.send_response(200)
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@ -214,6 +190,7 @@ class Handler(BaseHTTPRequestHandler):
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"total_usage": 0,
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})
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self.wfile.write(response.encode('utf-8'))
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else:
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self.send_error(404)
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@ -227,6 +204,11 @@ class Handler(BaseHTTPRequestHandler):
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print(body)
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if '/completions' in self.path or '/generate' in self.path:
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if not shared.model:
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self.openai_error("No model loaded.")
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return
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is_legacy = '/generate' in self.path
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is_chat = 'chat' in self.path
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resp_list = 'data' if is_legacy else 'choices'
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@ -238,13 +220,16 @@ class Handler(BaseHTTPRequestHandler):
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cmpl_id = "chatcmpl-%d" % (created_time) if is_chat else "conv-%d" % (created_time)
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# Request Parameters
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# Try to use openai defaults or map them to something with the same intent
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stopping_strings = default(shared.settings, 'custom_stopping_strings', [])
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req_params = default_req_params.copy()
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req_params['custom_stopping_strings'] = default_req_params['custom_stopping_strings'].copy()
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if 'stop' in body:
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if isinstance(body['stop'], str):
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stopping_strings = [body['stop']]
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req_params['custom_stopping_strings'].extend([body['stop']])
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elif isinstance(body['stop'], list):
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stopping_strings = body['stop']
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req_params['custom_stopping_strings'].extend(body['stop'])
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truncation_length = default(shared.settings, 'truncation_length', 2048)
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truncation_length = clamp(default(body, 'truncation_length', truncation_length), 1, truncation_length)
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@ -255,8 +240,6 @@ class Handler(BaseHTTPRequestHandler):
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max_tokens = default(body, max_tokens_str, default(shared.settings, 'max_new_tokens', default_max_tokens))
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# if the user assumes OpenAI, the max_tokens is way too large - try to ignore it unless it's small enough
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req_params = default_req_params.copy()
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req_params['max_new_tokens'] = max_tokens
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req_params['truncation_length'] = truncation_length
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req_params['temperature'] = clamp(default(body, 'temperature', default_req_params['temperature']), 0.001, 1.999) # fixup absolute 0.0
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@ -319,9 +302,14 @@ class Handler(BaseHTTPRequestHandler):
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'prompt': bot_prompt,
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}
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if instruct['user']: # WizardLM and some others have no user prompt.
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req_params['custom_stopping_strings'].extend(['\n' + instruct['user'], instruct['user']])
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if debug:
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print(f"Loaded instruction role format: {shared.settings['instruction_template']}")
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except:
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req_params['custom_stopping_strings'].extend(['\nuser:'])
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if debug:
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print("Loaded default role format.")
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@ -397,11 +385,6 @@ class Handler(BaseHTTPRequestHandler):
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req_params['max_new_tokens'] = req_params['truncation_length'] - token_count
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print(f"Warning: Set max_new_tokens = {req_params['max_new_tokens']}")
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# pass with some expected stop strings.
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# some strange cases of "##| Instruction: " sneaking through.
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stopping_strings += standard_stopping_strings
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req_params['custom_stopping_strings'] = stopping_strings
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if req_params['stream']:
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shared.args.chat = True
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# begin streaming
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@ -423,19 +406,17 @@ class Handler(BaseHTTPRequestHandler):
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chunk[resp_list][0]["message"] = {'role': 'assistant', 'content': ''}
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chunk[resp_list][0]["delta"] = {'role': 'assistant', 'content': ''}
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data_chunk = 'data: ' + json.dumps(chunk) + '\r\n\r\n'
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chunk_size = hex(len(data_chunk))[2:] + '\r\n'
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response = chunk_size + data_chunk
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response = 'data: ' + json.dumps(chunk) + '\r\n\r\n'
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self.wfile.write(response.encode('utf-8'))
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# generate reply #######################################
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if debug:
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print({'prompt': prompt, 'req_params': req_params, 'stopping_strings': stopping_strings})
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generator = generate_reply(prompt, req_params, stopping_strings=stopping_strings, is_chat=False)
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print({'prompt': prompt, 'req_params': req_params})
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generator = generate_reply(prompt, req_params, is_chat=False)
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answer = ''
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seen_content = ''
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longest_stop_len = max([len(x) for x in stopping_strings])
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longest_stop_len = max([len(x) for x in req_params['custom_stopping_strings']] + [0])
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for a in generator:
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answer = a
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@ -444,7 +425,7 @@ class Handler(BaseHTTPRequestHandler):
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len_seen = len(seen_content)
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search_start = max(len_seen - longest_stop_len, 0)
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for string in stopping_strings:
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for string in req_params['custom_stopping_strings']:
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idx = answer.find(string, search_start)
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if idx != -1:
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answer = answer[:idx] # clip it.
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@ -457,7 +438,7 @@ class Handler(BaseHTTPRequestHandler):
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# is completed, buffer and generate more, don't send it
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buffer_and_continue = False
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for string in stopping_strings:
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for string in req_params['custom_stopping_strings']:
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for j in range(len(string) - 1, 0, -1):
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if answer[-j:] == string[:j]:
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buffer_and_continue = True
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@ -498,9 +479,7 @@ class Handler(BaseHTTPRequestHandler):
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# So yeah... do both methods? delta and messages.
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chunk[resp_list][0]['message'] = {'content': new_content}
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chunk[resp_list][0]['delta'] = {'content': new_content}
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data_chunk = 'data: ' + json.dumps(chunk) + '\r\n\r\n'
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chunk_size = hex(len(data_chunk))[2:] + '\r\n'
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response = chunk_size + data_chunk
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response = 'data: ' + json.dumps(chunk) + '\r\n\r\n'
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self.wfile.write(response.encode('utf-8'))
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completion_token_count += len(encode(new_content)[0])
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@ -527,10 +506,7 @@ class Handler(BaseHTTPRequestHandler):
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chunk[resp_list][0]['message'] = {'content': ''}
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chunk[resp_list][0]['delta'] = {'content': ''}
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data_chunk = 'data: ' + json.dumps(chunk) + '\r\n\r\n'
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chunk_size = hex(len(data_chunk))[2:] + '\r\n'
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done = 'data: [DONE]\r\n\r\n'
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response = chunk_size + data_chunk + done
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response = 'data: ' + json.dumps(chunk) + '\r\n\r\ndata: [DONE]\r\n\r\n'
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self.wfile.write(response.encode('utf-8'))
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# Finished if streaming.
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if debug:
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@ -574,7 +550,12 @@ class Handler(BaseHTTPRequestHandler):
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response = json.dumps(resp)
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self.wfile.write(response.encode('utf-8'))
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elif '/edits' in self.path:
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if not shared.model:
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self.openai_error("No model loaded.")
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return
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self.send_response(200)
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self.send_access_control_headers()
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self.send_header('Content-Type', 'application/json')
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@ -586,15 +567,42 @@ class Handler(BaseHTTPRequestHandler):
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instruction = body['instruction']
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input = body.get('input', '')
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instruction_template = deduce_template()
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# Request parameters
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req_params = default_req_params.copy()
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# Alpaca is verbose so a good default prompt
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default_template = (
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"Below is an instruction that describes a task, paired with an input that provides further context. "
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"Write a response that appropriately completes the request.\n\n"
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"### Instruction:\n{instruction}\n\n### Input:\n{input}\n\n### Response:\n"
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)
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instruction_template = default_template
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req_params['custom_stopping_strings'] = [ '\n###' ]
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# Use the special instruction/input/response template for anything trained like Alpaca
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if not (shared.settings['instruction_template'] in ['Alpaca', 'Alpaca-Input']):
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try:
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instruct = yaml.safe_load(open(f"characters/instruction-following/{shared.settings['instruction_template']}.yaml", 'r'))
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template = instruct['turn_template']
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template = template\
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.replace('<|user|>', instruct.get('user', ''))\
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.replace('<|bot|>', instruct.get('bot', ''))\
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.replace('<|user-message|>', '{instruction}\n{input}')
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instruction_template = instruct.get('context', '') + template[:template.find('<|bot-message|>')].rstrip(' ')
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if instruct['user']:
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req_params['custom_stopping_strings'] = [ '\n' + instruct['user'], instruct['user'] ]
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except:
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pass
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edit_task = instruction_template.format(instruction=instruction, input=input)
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truncation_length = default(shared.settings, 'truncation_length', 2048)
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token_count = len(encode(edit_task)[0])
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max_tokens = truncation_length - token_count
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req_params = default_req_params.copy()
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req_params['max_new_tokens'] = max_tokens
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req_params['truncation_length'] = truncation_length
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req_params['temperature'] = clamp(default(body, 'temperature', default_req_params['temperature']), 0.001, 1.999) # fixup absolute 0.0
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@ -605,7 +613,7 @@ class Handler(BaseHTTPRequestHandler):
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if debug:
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print({'edit_template': edit_task, 'req_params': req_params, 'token_count': token_count})
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generator = generate_reply(edit_task, req_params, stopping_strings=standard_stopping_strings, is_chat=False)
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generator = generate_reply(edit_task, req_params, is_chat=False)
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answer = ''
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for a in generator:
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@ -636,6 +644,7 @@ class Handler(BaseHTTPRequestHandler):
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response = json.dumps(resp)
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self.wfile.write(response.encode('utf-8'))
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elif '/images/generations' in self.path and 'SD_WEBUI_URL' in os.environ:
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# Stable Diffusion callout wrapper for txt2img
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# Low effort implementation for compatibility. With only "prompt" being passed and assuming DALL-E
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@ -682,6 +691,7 @@ class Handler(BaseHTTPRequestHandler):
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response = json.dumps(resp)
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self.wfile.write(response.encode('utf-8'))
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elif '/embeddings' in self.path and embedding_model is not None:
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self.send_response(200)
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self.send_access_control_headers()
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@ -715,6 +725,7 @@ class Handler(BaseHTTPRequestHandler):
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if debug:
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print(f"Embeddings return size: {len(embeddings[0])}, number: {len(embeddings)}")
|
||||
self.wfile.write(response.encode('utf-8'))
|
||||
|
||||
elif '/moderations' in self.path:
|
||||
# for now do nothing, just don't error.
|
||||
self.send_response(200)
|
||||
@ -763,6 +774,7 @@ class Handler(BaseHTTPRequestHandler):
|
||||
}]
|
||||
})
|
||||
self.wfile.write(response.encode('utf-8'))
|
||||
|
||||
else:
|
||||
print(self.path, self.headers)
|
||||
self.send_error(404)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user