mirror of https://github.com/hwchase17/langchain
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9 Commits
790ea75cf7
...
9fa9f05e5d
| Author | SHA1 | Date |
|---|---|---|
William FH
|
9fa9f05e5d | 2 weeks ago |
YH
|
2aca7fcdcf | 2 weeks ago |
CT
|
0e917e319b | 2 weeks ago |
Pamela Fox
|
45092a36a2 | 2 weeks ago |
Chip Davis
|
e818c75f8a | 2 weeks ago |
Guilherme Zanotelli
|
f931a9ce60 | 2 weeks ago |
Chandre Van Der Westhuizen
|
e57cf73cf5 | 2 weeks ago |
Jorge Piedrahita Ortiz
|
40b2e2916b | 2 weeks ago |
Rahul Triptahi
|
955cf186d2 | 2 weeks ago |
@ -0,0 +1,212 @@
|
||||
{
|
||||
"cells": [
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"# Sambanova\n",
|
||||
"\n",
|
||||
"**[Sambanova](https://sambanova.ai/)'s** [Sambaverse](https://sambaverse.sambanova.ai/) and [Sambastudio](https://sambanova.ai/technology/full-stack-ai-platform) are platforms for running your own open source models\n",
|
||||
"\n",
|
||||
"This example goes over how to use LangChain to interact with Sambanova models"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"## Sambaverse"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"**Sambaverse** allows you to interact with multiple Open source models you can se the list of available models an interact with then in the [playground](https://sambaverse.sambanova.ai/playground)"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"An API key is required to access to Sambaverse models get one creating an account in [sambaverse.sambanova.ai](https://sambaverse.sambanova.ai/)\n",
|
||||
"\n",
|
||||
"The [sseclient-py](https://pypi.org/project/sseclient-py/) package is required to run streaming predictions "
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"metadata": {},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"%pip install --quiet sseclient-py==1.8.0"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"Register your API Key environment variable:"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": 4,
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||||
"metadata": {},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"import os\n",
|
||||
"\n",
|
||||
"sambaverse_api_key = \"<Your sambaverse API key>\"\n",
|
||||
"\n",
|
||||
"# Set the environment variables\n",
|
||||
"os.environ[\"SAMBAVERSE_API_KEY\"] = sambaverse_api_key"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"Call Sambaverse models directly from langchain!"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"metadata": {},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"from langchain_community.llms.sambanova import Sambaverse\n",
|
||||
"\n",
|
||||
"llm = Sambaverse(\n",
|
||||
" sambaverse_model_name=\"Meta/llama-2-7b-chat-hf\",\n",
|
||||
" streaming=False,\n",
|
||||
" model_kwargs={\n",
|
||||
" \"do_sample\": True,\n",
|
||||
" \"max_tokens_to_generate\": 1000,\n",
|
||||
" \"temperature\": 0.01,\n",
|
||||
" \"process_prompt\": True,\n",
|
||||
" \"select_expert\": \"llama-2-7b-chat-hf\",\n",
|
||||
" # \"repetition_penalty\": {\"type\": \"float\", \"value\": \"1\"},\n",
|
||||
" # \"top_k\": {\"type\": \"int\", \"value\": \"50\"},\n",
|
||||
" # \"top_p\": {\"type\": \"float\", \"value\": \"1\"}\n",
|
||||
" },\n",
|
||||
")\n",
|
||||
"\n",
|
||||
"print(llm.invoke(\"Why should I use open source models?\"))"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"## SambaStudio"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"**SambaStudio** allows you to Train, run batch inference jous, and deploy online inference endpoints to run your own fine tunned open source models"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"A SambaStudio environment is required to deploy a model. Get more information in [sambanova.ai/products/enterprise-ai-platform-sambanova-suite](https://sambanova.ai/products/enterprise-ai-platform-sambanova-suite)\n",
|
||||
"\n",
|
||||
"The [sseclient-py](https://pypi.org/project/sseclient-py/) package is required to run streaming predictions "
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"metadata": {},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"%pip install --quiet sseclient-py==1.8.0"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"Register your environment variables:"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"metadata": {},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"import os\n",
|
||||
"\n",
|
||||
"sambastudio_base_url = \"<Your SambaStudio environment URL>\"\n",
|
||||
"sambastudio_project_id = \"<Your SambaStudio project id>\"\n",
|
||||
"sambastudio_endpoint_id = \"<Your SambaStudio endpoint id>\"\n",
|
||||
"sambastudio_api_key = \"<Your SambaStudio endpoint API key>\"\n",
|
||||
"\n",
|
||||
"# Set the environment variables\n",
|
||||
"os.environ[\"SAMBASTUDIO_BASE_URL\"] = sambastudio_base_url\n",
|
||||
"os.environ[\"SAMBASTUDIO_PROJECT_ID\"] = sambastudio_project_id\n",
|
||||
"os.environ[\"SAMBASTUDIO_ENDPOINT_ID\"] = sambastudio_endpoint_id\n",
|
||||
"os.environ[\"SAMBASTUDIO_API_KEY\"] = sambastudio_api_key"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "markdown",
|
||||
"metadata": {},
|
||||
"source": [
|
||||
"Call SambaStudio models directly from langchain!"
|
||||
]
|
||||
},
|
||||
{
|
||||
"cell_type": "code",
|
||||
"execution_count": null,
|
||||
"metadata": {},
|
||||
"outputs": [],
|
||||
"source": [
|
||||
"from langchain_community.llms.sambanova import SambaStudio\n",
|
||||
"\n",
|
||||
"llm = SambaStudio(\n",
|
||||
" streaming=False,\n",
|
||||
" model_kwargs={\n",
|
||||
" \"do_sample\": True,\n",
|
||||
" \"max_tokens_to_generate\": 1000,\n",
|
||||
" \"temperature\": 0.01,\n",
|
||||
" # \"repetition_penalty\": {\"type\": \"float\", \"value\": \"1\"},\n",
|
||||
" # \"top_k\": {\"type\": \"int\", \"value\": \"50\"},\n",
|
||||
" # \"top_logprobs\": {\"type\": \"int\", \"value\": \"0\"},\n",
|
||||
" # \"top_p\": {\"type\": \"float\", \"value\": \"1\"}\n",
|
||||
" },\n",
|
||||
")\n",
|
||||
"\n",
|
||||
"print(llm.invoke(\"Why should I use open source models?\"))"
|
||||
]
|
||||
}
|
||||
],
|
||||
"metadata": {
|
||||
"kernelspec": {
|
||||
"display_name": "Python 3 (ipykernel)",
|
||||
"language": "python",
|
||||
"name": "python3"
|
||||
},
|
||||
"language_info": {
|
||||
"codemirror_mode": {
|
||||
"name": "ipython",
|
||||
"version": 3
|
||||
},
|
||||
"file_extension": ".py",
|
||||
"mimetype": "text/x-python",
|
||||
"name": "python",
|
||||
"nbconvert_exporter": "python",
|
||||
"pygments_lexer": "ipython3",
|
||||
"version": "3.9.1"
|
||||
}
|
||||
},
|
||||
"nbformat": 4,
|
||||
"nbformat_minor": 4
|
||||
}
|
||||
@ -0,0 +1,865 @@
|
||||
import json
|
||||
from typing import Any, Dict, Generator, Iterator, List, Optional, Union
|
||||
|
||||
import requests
|
||||
from langchain_core.callbacks.manager import CallbackManagerForLLMRun
|
||||
from langchain_core.language_models.llms import LLM
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||||
from langchain_core.outputs import GenerationChunk
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||||
from langchain_core.pydantic_v1 import Extra, root_validator
|
||||
from langchain_core.utils import get_from_dict_or_env
|
||||
|
||||
|
||||
class SVEndpointHandler:
|
||||
"""
|
||||
SambaNova Systems Interface for Sambaverse endpoint.
|
||||
|
||||
:param str host_url: Base URL of the DaaS API service
|
||||
"""
|
||||
|
||||
API_BASE_PATH = "/api/predict"
|
||||
|
||||
def __init__(self, host_url: str):
|
||||
"""
|
||||
Initialize the SVEndpointHandler.
|
||||
|
||||
:param str host_url: Base URL of the DaaS API service
|
||||
"""
|
||||
self.host_url = host_url
|
||||
self.http_session = requests.Session()
|
||||
|
||||
@staticmethod
|
||||
def _process_response(response: requests.Response) -> Dict:
|
||||
"""
|
||||
Processes the API response and returns the resulting dict.
|
||||
|
||||
All resulting dicts, regardless of success or failure, will contain the
|
||||
`status_code` key with the API response status code.
|
||||
|
||||
If the API returned an error, the resulting dict will contain the key
|
||||
`detail` with the error message.
|
||||
|
||||
If the API call was successful, the resulting dict will contain the key
|
||||
`data` with the response data.
|
||||
|
||||
:param requests.Response response: the response object to process
|
||||
:return: the response dict
|
||||
:rtype: dict
|
||||
"""
|
||||
result: Dict[str, Any] = {}
|
||||
try:
|
||||
text_result = response.text.strip().split("\n")[-1]
|
||||
result = {"data": json.loads("".join(text_result.split("data: ")[1:]))}
|
||||
except Exception as e:
|
||||
result["detail"] = str(e)
|
||||
if "status_code" not in result:
|
||||
result["status_code"] = response.status_code
|
||||
return result
|
||||
|
||||
@staticmethod
|
||||
def _process_streaming_response(
|
||||
response: requests.Response,
|
||||
) -> Generator[GenerationChunk, None, None]:
|
||||
"""Process the streaming response"""
|
||||
try:
|
||||
import sseclient
|
||||
except ImportError:
|
||||
raise ValueError(
|
||||
"could not import sseclient library"
|
||||
"Please install it with `pip install sseclient-py`."
|
||||
)
|
||||
client = sseclient.SSEClient(response)
|
||||
close_conn = False
|
||||
for event in client.events():
|
||||
if event.event == "error_event":
|
||||
close_conn = True
|
||||
text = json.dumps({"event": event.event, "data": event.data})
|
||||
chunk = GenerationChunk(text=text)
|
||||
yield chunk
|
||||
if close_conn:
|
||||
client.close()
|
||||
|
||||
def _get_full_url(self) -> str:
|
||||
"""
|
||||
Return the full API URL for a given path.
|
||||
:returns: the full API URL for the sub-path
|
||||
:rtype: str
|
||||
"""
|
||||
return f"{self.host_url}{self.API_BASE_PATH}"
|
||||
|
||||
def nlp_predict(
|
||||
self,
|
||||
key: str,
|
||||
sambaverse_model_name: Optional[str],
|
||||
input: Union[List[str], str],
|
||||
params: Optional[str] = "",
|
||||
stream: bool = False,
|
||||
) -> Dict:
|
||||
"""
|
||||
NLP predict using inline input string.
|
||||
|
||||
:param str project: Project ID in which the endpoint exists
|
||||
:param str endpoint: Endpoint ID
|
||||
:param str key: API Key
|
||||
:param str input_str: Input string
|
||||
:param str params: Input params string
|
||||
:returns: Prediction results
|
||||
:rtype: dict
|
||||
"""
|
||||
if isinstance(input, str):
|
||||
input = [input]
|
||||
parsed_input = []
|
||||
for element in input:
|
||||
parsed_element = {
|
||||
"conversation_id": "sambaverse-conversation-id",
|
||||
"messages": [
|
||||
{
|
||||
"message_id": 0,
|
||||
"role": "user",
|
||||
"content": element,
|
||||
}
|
||||
],
|
||||
}
|
||||
parsed_input.append(json.dumps(parsed_element))
|
||||
if params:
|
||||
data = {"inputs": parsed_input, "params": json.loads(params)}
|
||||
else:
|
||||
data = {"inputs": parsed_input}
|
||||
response = self.http_session.post(
|
||||
self._get_full_url(),
|
||||
headers={
|
||||
"key": key,
|
||||
"Content-Type": "application/json",
|
||||
"modelName": sambaverse_model_name,
|
||||
},
|
||||
json=data,
|
||||
)
|
||||
return SVEndpointHandler._process_response(response)
|
||||
|
||||
def nlp_predict_stream(
|
||||
self,
|
||||
key: str,
|
||||
sambaverse_model_name: Optional[str],
|
||||
input: Union[List[str], str],
|
||||
params: Optional[str] = "",
|
||||
) -> Iterator[GenerationChunk]:
|
||||
"""
|
||||
NLP predict using inline input string.
|
||||
|
||||
:param str project: Project ID in which the endpoint exists
|
||||
:param str endpoint: Endpoint ID
|
||||
:param str key: API Key
|
||||
:param str input_str: Input string
|
||||
:param str params: Input params string
|
||||
:returns: Prediction results
|
||||
:rtype: dict
|
||||
"""
|
||||
if isinstance(input, str):
|
||||
input = [input]
|
||||
parsed_input = []
|
||||
for element in input:
|
||||
parsed_element = {
|
||||
"conversation_id": "sambaverse-conversation-id",
|
||||
"messages": [
|
||||
{
|
||||
"message_id": 0,
|
||||
"role": "user",
|
||||
"content": element,
|
||||
}
|
||||
],
|
||||
}
|
||||
parsed_input.append(json.dumps(parsed_element))
|
||||
if params:
|
||||
data = {"inputs": parsed_input, "params": json.loads(params)}
|
||||
else:
|
||||
data = {"inputs": parsed_input}
|
||||
# Streaming output
|
||||
response = self.http_session.post(
|
||||
self._get_full_url(),
|
||||
headers={
|
||||
"key": key,
|
||||
"Content-Type": "application/json",
|
||||
"modelName": sambaverse_model_name,
|
||||
},
|
||||
json=data,
|
||||
stream=True,
|
||||
)
|
||||
for chunk in SVEndpointHandler._process_streaming_response(response):
|
||||
yield chunk
|
||||
|
||||
|
||||
class Sambaverse(LLM):
|
||||
"""
|
||||
Sambaverse large language models.
|
||||
|
||||
To use, you should have the environment variable ``SAMBAVERSE_API_KEY``
|
||||
set with your API key.
|
||||
|
||||
get one in https://sambaverse.sambanova.ai
|
||||
read extra documentation in https://docs.sambanova.ai/sambaverse/latest/index.html
|
||||
|
||||
|
||||
Example:
|
||||
.. code-block:: python
|
||||
|
||||
from langchain_community.llms.sambanova import Sambaverse
|
||||
Sambaverse(
|
||||
sambaverse_url="https://sambaverse.sambanova.ai",
|
||||
sambaverse_api_key: "your sambaverse api key",
|
||||
sambaverse_model_name: "Meta/llama-2-7b-chat-hf",
|
||||
streaming: = False
|
||||
model_kwargs={
|
||||
"do_sample": False,
|
||||
"max_tokens_to_generate": 100,
|
||||
"temperature": 0.7,
|
||||
"top_p": 1.0,
|
||||
"repetition_penalty": 1,
|
||||
"top_k": 50,
|
||||
},
|
||||
)
|
||||
"""
|
||||
|
||||
sambaverse_url: str = "https://sambaverse.sambanova.ai"
|
||||
"""Sambaverse url to use"""
|
||||
|
||||
sambaverse_api_key: str = ""
|
||||
"""sambaverse api key"""
|
||||
|
||||
sambaverse_model_name: Optional[str] = None
|
||||
"""sambaverse expert model to use"""
|
||||
|
||||
model_kwargs: Optional[dict] = None
|
||||
"""Key word arguments to pass to the model."""
|
||||
|
||||
streaming: Optional[bool] = False
|
||||
"""Streaming flag to get streamed response."""
|
||||
|
||||
class Config:
|
||||
"""Configuration for this pydantic object."""
|
||||
|
||||
extra = Extra.forbid
|
||||
|
||||
@classmethod
|
||||
def is_lc_serializable(cls) -> bool:
|
||||
return True
|
||||
|
||||
@root_validator()
|
||||
def validate_environment(cls, values: Dict) -> Dict:
|
||||
"""Validate that api key exists in environment."""
|
||||
values["sambaverse_url"] = get_from_dict_or_env(
|
||||
values, "sambaverse_url", "SAMBAVERSE_URL"
|
||||
)
|
||||
values["sambaverse_api_key"] = get_from_dict_or_env(
|
||||
values, "sambaverse_api_key", "SAMBAVERSE_API_KEY"
|
||||
)
|
||||
values["sambaverse_model_name"] = get_from_dict_or_env(
|
||||
values, "sambaverse_model_name", "SAMBAVERSE_MODEL_NAME"
|
||||
)
|
||||
return values
|
||||
|
||||
@property
|
||||
def _identifying_params(self) -> Dict[str, Any]:
|
||||
"""Get the identifying parameters."""
|
||||
return {**{"model_kwargs": self.model_kwargs}}
|
||||
|
||||
@property
|
||||
def _llm_type(self) -> str:
|
||||
"""Return type of llm."""
|
||||
return "Sambaverse LLM"
|
||||
|
||||
def _get_tuning_params(self, stop: Optional[List[str]]) -> str:
|
||||
"""
|
||||
Get the tuning parameters to use when calling the LLM.
|
||||
|
||||
Args:
|
||||
stop: Stop words to use when generating. Model output is cut off at the
|
||||
first occurrence of any of the stop substrings.
|
||||
|
||||
Returns:
|
||||
The tuning parameters as a JSON string.
|
||||
"""
|
||||
_model_kwargs = self.model_kwargs or {}
|
||||
_stop_sequences = _model_kwargs.get("stop_sequences", [])
|
||||
_stop_sequences = stop or _stop_sequences
|
||||
_model_kwargs["stop_sequences"] = ",".join(f'"{x}"' for x in _stop_sequences)
|
||||
tuning_params_dict = {
|
||||
k: {"type": type(v).__name__, "value": str(v)}
|
||||
for k, v in (_model_kwargs.items())
|
||||
}
|
||||
tuning_params = json.dumps(tuning_params_dict)
|
||||
return tuning_params
|
||||
|
||||
def _handle_nlp_predict(
|
||||
self,
|
||||
sdk: SVEndpointHandler,
|
||||
prompt: Union[List[str], str],
|
||||
tuning_params: str,
|
||||
) -> str:
|
||||
"""
|
||||
Perform an NLP prediction using the Sambaverse endpoint handler.
|
||||
|
||||
Args:
|
||||
sdk: The SVEndpointHandler to use for the prediction.
|
||||
prompt: The prompt to use for the prediction.
|
||||
tuning_params: The tuning parameters to use for the prediction.
|
||||
|
||||
Returns:
|
||||
The prediction result.
|
||||
|
||||
Raises:
|
||||
ValueError: If the prediction fails.
|
||||
"""
|
||||
response = sdk.nlp_predict(
|
||||
self.sambaverse_api_key, self.sambaverse_model_name, prompt, tuning_params
|
||||
)
|
||||
if response["status_code"] != 200:
|
||||
optional_details = response["details"]
|
||||
optional_message = response["message"]
|
||||
raise ValueError(
|
||||
f"Sambanova /complete call failed with status code "
|
||||
f"{response['status_code']}. Details: {optional_details}"
|
||||
f"{response['status_code']}. Message: {optional_message}"
|
||||
)
|
||||
return response["data"]["completion"]
|
||||
|
||||
def _handle_completion_requests(
|
||||
self, prompt: Union[List[str], str], stop: Optional[List[str]]
|
||||
) -> str:
|
||||
"""
|
||||
Perform a prediction using the Sambaverse endpoint handler.
|
||||
|
||||
Args:
|
||||
prompt: The prompt to use for the prediction.
|
||||
stop: stop sequences.
|
||||
|
||||
Returns:
|
||||
The prediction result.
|
||||
|
||||
Raises:
|
||||
ValueError: If the prediction fails.
|
||||
"""
|
||||
ss_endpoint = SVEndpointHandler(self.sambaverse_url)
|
||||
tuning_params = self._get_tuning_params(stop)
|
||||
return self._handle_nlp_predict(ss_endpoint, prompt, tuning_params)
|
||||
|
||||
def _handle_nlp_predict_stream(
|
||||
self, sdk: SVEndpointHandler, prompt: Union[List[str], str], tuning_params: str
|
||||
) -> Iterator[GenerationChunk]:
|
||||
"""
|
||||
Perform a streaming request to the LLM.
|
||||
|
||||
Args:
|
||||
sdk: The SVEndpointHandler to use for the prediction.
|
||||
prompt: The prompt to use for the prediction.
|
||||
tuning_params: The tuning parameters to use for the prediction.
|
||||
|
||||
Returns:
|
||||
An iterator of GenerationChunks.
|
||||
"""
|
||||
for chunk in sdk.nlp_predict_stream(
|
||||
self.sambaverse_api_key, self.sambaverse_model_name, prompt, tuning_params
|
||||
):
|
||||
yield chunk
|
||||
|
||||
def _stream(
|
||||
self,
|
||||
prompt: Union[List[str], str],
|
||||
stop: Optional[List[str]] = None,
|
||||
run_manager: Optional[CallbackManagerForLLMRun] = None,
|
||||
**kwargs: Any,
|
||||
) -> Iterator[GenerationChunk]:
|
||||
"""Stream the Sambaverse's LLM on the given prompt.
|
||||
|
||||
Args:
|
||||
prompt: The prompt to pass into the model.
|
||||
stop: Optional list of stop words to use when generating.
|
||||
run_manager: Callback manager for the run.
|
||||
**kwargs: Additional keyword arguments. directly passed
|
||||
to the sambaverse model in API call.
|
||||
|
||||
Returns:
|
||||
An iterator of GenerationChunks.
|
||||
"""
|
||||
ss_endpoint = SVEndpointHandler(self.sambaverse_url)
|
||||
tuning_params = self._get_tuning_params(stop)
|
||||
try:
|
||||
if self.streaming:
|
||||
for chunk in self._handle_nlp_predict_stream(
|
||||
ss_endpoint, prompt, tuning_params
|
||||
):
|
||||
if run_manager:
|
||||
run_manager.on_llm_new_token(chunk.text)
|
||||
yield chunk
|
||||
else:
|
||||
return
|
||||
except Exception as e:
|
||||
# Handle any errors raised by the inference endpoint
|
||||
raise ValueError(f"Error raised by the inference endpoint: {e}") from e
|
||||
|
||||
def _handle_stream_request(
|
||||
self,
|
||||
prompt: Union[List[str], str],
|
||||
stop: Optional[List[str]],
|
||||
run_manager: Optional[CallbackManagerForLLMRun],
|
||||
kwargs: Dict[str, Any],
|
||||
) -> str:
|
||||
"""
|
||||
Perform a streaming request to the LLM.
|
||||
|
||||
Args:
|
||||
prompt: The prompt to generate from.
|
||||
stop: Stop words to use when generating. Model output is cut off at the
|
||||
first occurrence of any of the stop substrings.
|
||||
run_manager: Callback manager for the run.
|
||||
**kwargs: Additional keyword arguments. directly passed
|
||||
to the sambaverse model in API call.
|
||||
|
||||
Returns:
|
||||
The model output as a string.
|
||||
"""
|
||||
completion = ""
|
||||
for chunk in self._stream(
|
||||
prompt=prompt, stop=stop, run_manager=run_manager, **kwargs
|
||||
):
|
||||
completion += chunk.text
|
||||
return completion
|
||||
|
||||
def _call(
|
||||
self,
|
||||
prompt: Union[List[str], str],
|
||||
stop: Optional[List[str]] = None,
|
||||
run_manager: Optional[CallbackManagerForLLMRun] = None,
|
||||
**kwargs: Any,
|
||||
) -> str:
|
||||
"""Run the LLM on the given input.
|
||||
|
||||
Args:
|
||||
prompt: The prompt to generate from.
|
||||
stop: Stop words to use when generating. Model output is cut off at the
|
||||
first occurrence of any of the stop substrings.
|
||||
run_manager: Callback manager for the run.
|
||||
**kwargs: Additional keyword arguments. directly passed
|
||||
to the sambaverse model in API call.
|
||||
|
||||
Returns:
|
||||
The model output as a string.
|
||||
"""
|
||||
try:
|
||||
if self.streaming:
|
||||
return self._handle_stream_request(prompt, stop, run_manager, kwargs)
|
||||
return self._handle_completion_requests(prompt, stop)
|
||||
except Exception as e:
|
||||
# Handle any errors raised by the inference endpoint
|
||||
raise ValueError(f"Error raised by the inference endpoint: {e}") from e
|
||||
|
||||
|
||||
class SSEndpointHandler:
|
||||
"""
|
||||
SambaNova Systems Interface for SambaStudio model endpoints.
|
||||
|
||||
:param str host_url: Base URL of the DaaS API service
|
||||
"""
|
||||
|
||||
API_BASE_PATH = "/api"
|
||||
|
||||
def __init__(self, host_url: str):
|
||||
"""
|
||||
Initialize the SSEndpointHandler.
|
||||
|
||||
:param str host_url: Base URL of the DaaS API service
|
||||
"""
|
||||
self.host_url = host_url
|
||||
self.http_session = requests.Session()
|
||||
|
||||
@staticmethod
|
||||
def _process_response(response: requests.Response) -> Dict:
|
||||
"""
|
||||
Processes the API response and returns the resulting dict.
|
||||
|
||||
All resulting dicts, regardless of success or failure, will contain the
|
||||
`status_code` key with the API response status code.
|
||||
|
||||
If the API returned an error, the resulting dict will contain the key
|
||||
`detail` with the error message.
|
||||
|
||||
If the API call was successful, the resulting dict will contain the key
|
||||
`data` with the response data.
|
||||
|
||||
:param requests.Response response: the response object to process
|
||||
:return: the response dict
|
||||
:rtype: dict
|
||||
"""
|
||||
result: Dict[str, Any] = {}
|
||||
try:
|
||||
result = response.json()
|
||||
except Exception as e:
|
||||
result["detail"] = str(e)
|
||||
if "status_code" not in result:
|
||||
result["status_code"] = response.status_code
|
||||
return result
|
||||
|
||||
@staticmethod
|
||||
def _process_streaming_response(
|
||||
response: requests.Response,
|
||||
) -> Generator[GenerationChunk, None, None]:
|
||||
"""Process the streaming response"""
|
||||
try:
|
||||
import sseclient
|
||||
except ImportError:
|
||||
raise ValueError(
|
||||
"could not import sseclient library"
|
||||
"Please install it with `pip install sseclient-py`."
|
||||
)
|
||||
client = sseclient.SSEClient(response)
|
||||
close_conn = False
|
||||
for event in client.events():
|
||||
if event.event == "error_event":
|
||||
close_conn = True
|
||||
text = json.dumps({"event": event.event, "data": event.data})
|
||||
chunk = GenerationChunk(text=text)
|
||||
yield chunk
|
||||
if close_conn:
|
||||
client.close()
|
||||
|
||||
def _get_full_url(self, path: str) -> str:
|
||||
"""
|
||||
Return the full API URL for a given path.
|
||||
|
||||
:param str path: the sub-path
|
||||
:returns: the full API URL for the sub-path
|
||||
:rtype: str
|
||||
"""
|
||||
return f"{self.host_url}{self.API_BASE_PATH}{path}"
|
||||
|
||||
def nlp_predict(
|
||||
self,
|
||||
project: str,
|
||||
endpoint: str,
|
||||
key: str,
|
||||
input: Union[List[str], str],
|
||||
params: Optional[str] = "",
|
||||
stream: bool = False,
|
||||
) -> Dict:
|
||||
"""
|
||||
NLP predict using inline input string.
|
||||
|
||||
:param str project: Project ID in which the endpoint exists
|
||||
:param str endpoint: Endpoint ID
|
||||
:param str key: API Key
|
||||
:param str input_str: Input string
|
||||
:param str params: Input params string
|
||||
:returns: Prediction results
|
||||
:rtype: dict
|
||||
"""
|
||||
if isinstance(input, str):
|
||||
input = [input]
|
||||
if params:
|
||||
data = {"inputs": input, "params": json.loads(params)}
|
||||
else:
|
||||
data = {"inputs": input}
|
||||
response = self.http_session.post(
|
||||
self._get_full_url(f"/predict/nlp/{project}/{endpoint}"),
|
||||
headers={"key": key},
|
||||
json=data,
|
||||
)
|
||||
return SSEndpointHandler._process_response(response)
|
||||
|
||||
def nlp_predict_stream(
|
||||
self,
|
||||
project: str,
|
||||
endpoint: str,
|
||||
key: str,
|
||||
input: Union[List[str], str],
|
||||
params: Optional[str] = "",
|
||||
) -> Iterator[GenerationChunk]:
|
||||
"""
|
||||
NLP predict using inline input string.
|
||||
|
||||
:param str project: Project ID in which the endpoint exists
|
||||
:param str endpoint: Endpoint ID
|
||||
:param str key: API Key
|
||||
:param str input_str: Input string
|
||||
:param str params: Input params string
|
||||
:returns: Prediction results
|
||||
:rtype: dict
|
||||
"""
|
||||
if isinstance(input, str):
|
||||
input = [input]
|
||||
if params:
|
||||
data = {"inputs": input, "params": json.loads(params)}
|
||||
else:
|
||||
data = {"inputs": input}
|
||||
# Streaming output
|
||||
response = self.http_session.post(
|
||||
self._get_full_url(f"/predict/nlp/stream/{project}/{endpoint}"),
|
||||
headers={"key": key},
|
||||
json=data,
|
||||
stream=True,
|
||||
)
|
||||
for chunk in SSEndpointHandler._process_streaming_response(response):
|
||||
yield chunk
|
||||
|
||||
|
||||
class SambaStudio(LLM):
|
||||
"""
|
||||
SambaStudio large language models.
|
||||
|
||||
To use, you should have the environment variables
|
||||
``SAMBASTUDIO_BASE_URL`` set with your SambaStudio environment URL.
|
||||
``SAMBASTUDIO_PROJECT_ID`` set with your SambaStudio project ID.
|
||||
``SAMBASTUDIO_ENDPOINT_ID`` set with your SambaStudio endpoint ID.
|
||||
``SAMBASTUDIO_API_KEY`` set with your SambaStudio endpoint API key.
|
||||
|
||||
https://sambanova.ai/products/enterprise-ai-platform-sambanova-suite
|
||||
|
||||
read extra documentation in https://docs.sambanova.ai/sambastudio/latest/index.html
|
||||
|
||||
Example:
|
||||
.. code-block:: python
|
||||
|
||||
from langchain_community.llms.sambanova import Sambaverse
|
||||
SambaStudio(
|
||||
base_url="your SambaStudio environment URL",
|
||||
project_id=set with your SambaStudio project ID.,
|
||||
endpoint_id=set with your SambaStudio endpoint ID.,
|
||||
api_token= set with your SambaStudio endpoint API key.,
|
||||
streaming=false
|
||||
model_kwargs={
|
||||
"do_sample": False,
|
||||
"max_tokens_to_generate": 1000,
|
||||
"temperature": 0.7,
|
||||
"top_p": 1.0,
|
||||
"repetition_penalty": 1,
|
||||
"top_k": 50,
|
||||
},
|
||||
)
|
||||
"""
|
||||
|
||||
base_url: str = ""
|
||||
"""Base url to use"""
|
||||
|
||||
project_id: str = ""
|
||||
"""Project id on sambastudio for model"""
|
||||
|
||||
endpoint_id: str = ""
|
||||
"""endpoint id on sambastudio for model"""
|
||||
|
||||
api_key: str = ""
|
||||
"""sambastudio api key"""
|
||||
|
||||
model_kwargs: Optional[dict] = None
|
||||
"""Key word arguments to pass to the model."""
|
||||
|
||||
streaming: Optional[bool] = False
|
||||
"""Streaming flag to get streamed response."""
|
||||
|
||||
class Config:
|
||||
"""Configuration for this pydantic object."""
|
||||
|
||||
extra = Extra.forbid
|
||||
|
||||
@classmethod
|
||||
def is_lc_serializable(cls) -> bool:
|
||||
return True
|
||||
|
||||
@property
|
||||
def _identifying_params(self) -> Dict[str, Any]:
|
||||
"""Get the identifying parameters."""
|
||||
return {**{"model_kwargs": self.model_kwargs}}
|
||||
|
||||
@property
|
||||
def _llm_type(self) -> str:
|
||||
"""Return type of llm."""
|
||||
return "Sambastudio LLM"
|
||||
|
||||
@root_validator()
|
||||
def validate_environment(cls, values: Dict) -> Dict:
|
||||
"""Validate that api key and python package exists in environment."""
|
||||
values["base_url"] = get_from_dict_or_env(
|
||||
values, "sambastudio_base_url", "SAMBASTUDIO_BASE_URL"
|
||||
)
|
||||
values["project_id"] = get_from_dict_or_env(
|
||||
values, "sambastudio_project_id", "SAMBASTUDIO_PROJECT_ID"
|
||||
)
|
||||
values["endpoint_id"] = get_from_dict_or_env(
|
||||
values, "sambastudio_endpoint_id", "SAMBASTUDIO_ENDPOINT_ID"
|
||||
)
|
||||
values["api_key"] = get_from_dict_or_env(
|
||||
values, "sambastudio_api_key", "SAMBASTUDIO_API_KEY"
|
||||
)
|
||||
return values
|
||||
|
||||
def _get_tuning_params(self, stop: Optional[List[str]]) -> str:
|
||||
"""
|
||||
Get the tuning parameters to use when calling the LLM.
|
||||
|
||||
Args:
|
||||
stop: Stop words to use when generating. Model output is cut off at the
|
||||
first occurrence of any of the stop substrings.
|
||||
|
||||
Returns:
|
||||
The tuning parameters as a JSON string.
|
||||
"""
|
||||
_model_kwargs = self.model_kwargs or {}
|
||||
_stop_sequences = _model_kwargs.get("stop_sequences", [])
|
||||
_stop_sequences = stop or _stop_sequences
|
||||
# _model_kwargs['stop_sequences'] = ','.join(
|
||||
# f"'{x}'" for x in _stop_sequences)
|
||||
tuning_params_dict = {
|
||||
k: {"type": type(v).__name__, "value": str(v)}
|
||||
for k, v in (_model_kwargs.items())
|
||||
}
|
||||
tuning_params = json.dumps(tuning_params_dict)
|
||||
return tuning_params
|
||||
|
||||
def _handle_nlp_predict(
|
||||
self, sdk: SSEndpointHandler, prompt: Union[List[str], str], tuning_params: str
|
||||
) -> str:
|
||||
"""
|
||||
Perform an NLP prediction using the SambaStudio endpoint handler.
|
||||
|
||||
Args:
|
||||
sdk: The SSEndpointHandler to use for the prediction.
|
||||
prompt: The prompt to use for the prediction.
|
||||
tuning_params: The tuning parameters to use for the prediction.
|
||||
|
||||
Returns:
|
||||
The prediction result.
|
||||
|
||||
Raises:
|
||||
ValueError: If the prediction fails.
|
||||
"""
|
||||
response = sdk.nlp_predict(
|
||||
self.project_id, self.endpoint_id, self.api_key, prompt, tuning_params
|
||||
)
|
||||
if response["status_code"] != 200:
|
||||
optional_detail = response["detail"]
|
||||
raise ValueError(
|
||||
f"Sambanova /complete call failed with status code "
|
||||
f"{response['status_code']}. Details: {optional_detail}"
|
||||
)
|
||||
return response["data"][0]["completion"]
|
||||
|
||||
def _handle_completion_requests(
|
||||
self, prompt: Union[List[str], str], stop: Optional[List[str]]
|
||||
) -> str:
|
||||
"""
|
||||
Perform a prediction using the SambaStudio endpoint handler.
|
||||
|
||||
Args:
|
||||
prompt: The prompt to use for the prediction.
|
||||
stop: stop sequences.
|
||||
|
||||
Returns:
|
||||
The prediction result.
|
||||
|
||||
Raises:
|
||||
ValueError: If the prediction fails.
|
||||
"""
|
||||
ss_endpoint = SSEndpointHandler(self.base_url)
|
||||
tuning_params = self._get_tuning_params(stop)
|
||||
return self._handle_nlp_predict(ss_endpoint, prompt, tuning_params)
|
||||
|
||||
def _handle_nlp_predict_stream(
|
||||
self, sdk: SSEndpointHandler, prompt: Union[List[str], str], tuning_params: str
|
||||
) -> Iterator[GenerationChunk]:
|
||||
"""
|
||||
Perform a streaming request to the LLM.
|
||||
|
||||
Args:
|
||||
sdk: The SVEndpointHandler to use for the prediction.
|
||||
prompt: The prompt to use for the prediction.
|
||||
tuning_params: The tuning parameters to use for the prediction.
|
||||
|
||||
Returns:
|
||||
An iterator of GenerationChunks.
|
||||
"""
|
||||
for chunk in sdk.nlp_predict_stream(
|
||||
self.project_id, self.endpoint_id, self.api_key, prompt, tuning_params
|
||||
):
|
||||
yield chunk
|
||||
|
||||
def _stream(
|
||||
self,
|
||||
prompt: Union[List[str], str],
|
||||
stop: Optional[List[str]] = None,
|
||||
run_manager: Optional[CallbackManagerForLLMRun] = None,
|
||||
**kwargs: Any,
|
||||
) -> Iterator[GenerationChunk]:
|
||||
"""Call out to Sambanova's complete endpoint.
|
||||
|
||||
Args:
|
||||
prompt: The prompt to pass into the model.
|
||||
stop: Optional list of stop words to use when generating.
|
||||
|
||||
Returns:
|
||||
The string generated by the model.
|
||||
"""
|
||||
ss_endpoint = SSEndpointHandler(self.base_url)
|
||||
tuning_params = self._get_tuning_params(stop)
|
||||
try:
|
||||
if self.streaming:
|
||||
for chunk in self._handle_nlp_predict_stream(
|
||||
ss_endpoint, prompt, tuning_params
|
||||
):
|
||||
if run_manager:
|
||||
run_manager.on_llm_new_token(chunk.text)
|
||||
yield chunk
|
||||
else:
|
||||
return
|
||||
except Exception as e:
|
||||
# Handle any errors raised by the inference endpoint
|
||||
raise ValueError(f"Error raised by the inference endpoint: {e}") from e
|
||||
|
||||
def _handle_stream_request(
|
||||
self,
|
||||
prompt: Union[List[str], str],
|
||||
stop: Optional[List[str]],
|
||||
run_manager: Optional[CallbackManagerForLLMRun],
|
||||
kwargs: Dict[str, Any],
|
||||
) -> str:
|
||||
"""
|
||||
Perform a streaming request to the LLM.
|
||||
|
||||
Args:
|
||||
prompt: The prompt to generate from.
|
||||
stop: Stop words to use when generating. Model output is cut off at the
|
||||
first occurrence of any of the stop substrings.
|
||||
run_manager: Callback manager for the run.
|
||||
**kwargs: Additional keyword arguments. directly passed
|
||||
to the sambaverse model in API call.
|
||||
|
||||
Returns:
|
||||
The model output as a string.
|
||||
"""
|
||||
completion = ""
|
||||
for chunk in self._stream(
|
||||
prompt=prompt, stop=stop, run_manager=run_manager, **kwargs
|
||||
):
|
||||
completion += chunk.text
|
||||
return completion
|
||||
|
||||
def _call(
|
||||
self,
|
||||
prompt: Union[List[str], str],
|
||||
stop: Optional[List[str]] = None,
|
||||
run_manager: Optional[CallbackManagerForLLMRun] = None,
|
||||
**kwargs: Any,
|
||||
) -> str:
|
||||
"""Call out to Sambanova's complete endpoint.
|
||||
|
||||
Args:
|
||||
prompt: The prompt to pass into the model.
|
||||
stop: Optional list of stop words to use when generating.
|
||||
|
||||
Returns:
|
||||
The string generated by the model.
|
||||
"""
|
||||
if stop is not None:
|
||||
raise Exception("stop not implemented")
|
||||
try:
|
||||
if self.streaming:
|
||||
return self._handle_stream_request(prompt, stop, run_manager, kwargs)
|
||||
return self._handle_completion_requests(prompt, stop)
|
||||
except Exception as e:
|
||||
# Handle any errors raised by the inference endpoint
|
||||
raise ValueError(f"Error raised by the inference endpoint: {e}") from e
|
||||
@ -0,0 +1,28 @@
|
||||
"""Test sambanova API wrapper.
|
||||
|
||||
In order to run this test, you need to have an sambaverse api key,
|
||||
and a sambaverse base url, project id, endpoint id, and api key.
|
||||
You'll then need to set SAMBAVERSE_API_KEY, SAMBASTUDIO_BASE_URL,
|
||||
SAMBASTUDIO_PROJECT_ID, SAMBASTUDIO_ENDPOINT_ID, and SAMBASTUDIO_API_KEY
|
||||
environment variables.
|
||||
"""
|
||||
from langchain_community.llms.sambanova import SambaStudio, Sambaverse
|
||||
|
||||
|
||||
def test_sambaverse_call() -> None:
|
||||
"""Test simple non-streaming call to sambaverse."""
|
||||
llm = Sambaverse(
|
||||
sambaverse_model_name="Meta/llama-2-7b-chat-hf",
|
||||
model_kwargs={"select_expert": "llama-2-7b-chat-hf"},
|
||||
)
|
||||
output = llm.invoke("What is LangChain")
|
||||
assert output
|
||||
assert isinstance(output, str)
|
||||
|
||||
|
||||
def test_sambastudio_call() -> None:
|
||||
"""Test simple non-streaming call to sambaverse."""
|
||||
llm = SambaStudio()
|
||||
output = llm.invoke("What is LangChain")
|
||||
assert output
|
||||
assert isinstance(output, str)
|
||||
Loading…
Reference in New Issue