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async_api.py
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async_api.py
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import sys
import os
from dataclasses import dataclass
from threading import Thread
from typing import Optional, Any
import openai
import asyncio
import aiohttp
from aioprocessing import AioJoinableQueue, AioQueue
from tenacity import wait_random_exponential, stop_after_attempt, AsyncRetrying, RetryError
@dataclass
class Payload:
data: dict
metadata: Optional[dict]
max_retries: int
retry_multiplier: float
retry_max: float
endpoint: str = None
api_key: str = None
attempt: int = 0
failed: bool = False
response: Any = None
callback: Any = None
def call_callback(self):
if self.callback:
self.callback(self)
async def legacy_api(payload: Payload, **kwargs):
headers = {
"Content-Type": "application/json",
"Authorization": f"Bearer {payload.api_key}"
}
async with aiohttp.ClientSession(headers=headers) as session:
response = await session.post(
url="https://api.openai.com/v1/chat/completions",
json=payload.data,
**kwargs
)
json_response = await response.json()
if "error" in json_response:
raise ValueError(json_response['error']['message'])
return json_response
class OpenAIMultiClient:
def __init__(self,
concurrency: int = 8,
max_retries: int = 3,
wait_interval: float = 0,
retry_multiplier: float = 1,
retry_max: float = 60,
data_template: Optional[dict] = None,
metadata_template: Optional[dict] = None,
endpoint: Optional[str] = None,
custom_api=None
):
self._wait_interval = wait_interval
self._data_template = data_template or {}
self._metadata_template = metadata_template or {}
self._max_retries = max_retries
self._retry_multiplier = retry_multiplier
self._retry_max = retry_max
self._concurrency = concurrency
self._loop = asyncio.new_event_loop()
self._in_queue = AioJoinableQueue(maxsize=concurrency)
self._out_queue = AioQueue(maxsize=concurrency)
self._event_loop_thread = Thread(target=self._run_event_loop)
self._event_loop_thread.start()
self._endpoint = endpoint
self._mock_api = custom_api
for i in range(concurrency):
asyncio.run_coroutine_threadsafe(self._worker(i), self._loop)
def run_request_function(self, input_function, *args, stop_at_end=True, **kwargs):
if stop_at_end:
def f(*args, **kwargs):
input_function(*args, **kwargs)
self.close()
else:
f = input_function
input_thread = Thread(target=f, args=args, kwargs=kwargs)
input_thread.start()
def _run_event_loop(self):
asyncio.set_event_loop(self._loop)
self._loop.run_forever()
async def _process_payload(self, payload: Payload) -> Payload:
# print(f"Processing {payload.metadata}")
if self._mock_api:
payload.response = await self._mock_api(payload)
elif payload.endpoint == "completions":
payload.response = await openai.Completion.acreate(**payload.data)
elif payload.endpoint == "chat.completions" or payload.endpoint == "chats":
payload.response = await openai.ChatCompletion.acreate(**payload.data)
elif payload.endpoint == "embeddings":
payload.response = await openai.Embedding.acreate(**payload.data)
elif payload.endpoint == "edits":
payload.response = await openai.Edit.acreate(**payload.data)
elif payload.endpoint == "images":
payload.response = await openai.Image.acreate(**payload.data)
elif payload.endpoint == "fine-tunes":
payload.response = await openai.FineTune.acreate(**payload.data)
else:
raise ValueError(f"Unknown endpoint {payload.endpoint}")
# print(f"Processed {payload.metadata}")
return payload
async def _worker(self, i):
while True:
payload = await self._in_queue.coro_get()
if payload is None:
print(f"Exiting worker {i}")
self._in_queue.task_done()
break
try:
async for attempt in AsyncRetrying(
wait=wait_random_exponential(multiplier=payload.retry_multiplier, max=payload.retry_max),
stop=stop_after_attempt(payload.max_retries)):
with attempt:
try:
payload.attempt = attempt.retry_state.attempt_number
payload = await self._process_payload(payload)
await self._out_queue.coro_put(payload)
self._in_queue.task_done()
except:
print(f"Error processing {payload.metadata}")
raise
except RetryError as e:
payload.failed = True
payload.response = str(e.last_attempt.exception())
print(f"Failed to process {payload.metadata}: {e.last_attempt.exception()}")
await self._out_queue.coro_put(payload)
self._in_queue.task_done()
await asyncio.sleep(self._wait_interval)
def close(self):
try:
# Putting in sentinel records "null" to tell the queue
for _ in range(self._concurrency):
self._in_queue.put(None)
self._in_queue.join()
self._out_queue.put(None)
self._loop.call_soon_threadsafe(self._loop.stop)
self._event_loop_thread.join()
except Exception as e:
print(f"Error closing: {e}")
def __iter__(self):
return self
def __next__(self):
out = self._out_queue.get()
if out is None:
raise StopIteration
out.call_callback()
return out
def request(self,
data: dict,
metadata: Optional[dict] = None,
max_retries: Optional[int] = None,
retry_multiplier: Optional[float] = None,
retry_max: Optional[float] = None,
endpoint: Optional[str] = None,
api_key: Optional[str] = None,
callback: Any = None
):
payload = Payload(
data={**self._data_template, **data},
metadata={**self._metadata_template, **(metadata or {})},
max_retries=max_retries or self._max_retries,
retry_multiplier=retry_multiplier or self._retry_multiplier,
retry_max=retry_max or self._retry_max,
endpoint=endpoint or self._endpoint,
api_key=api_key,
callback=callback
)
self._in_queue.put(payload)
def pull_all(self):
for _ in self:
pass