aiohttp-retry 2.0

Simple retry cient for aiohttp

This package is similar to Tornado-retry-client.

Python 3.5+.

Install: pip install aiohttp-retry.

Warning

This current version is 2.0. It hasn’t backward compatibility for previous versions.

You still can use v1.2 (pip install aiohttp-retry==1.2), but it is unsupported.

Examples of usage:

from aiohttp_retry import RetryClient, RetryOptions

async def main():
    retry_options = RetryOptions(attempts=1)
    retry_client = RetryClient(raise_for_status=False, retry_options=retry_options)
    async with retry_client.get('https://ya.ru') as response:
        print(response.status)

    await retry_client.close()

from aiohttp_retry import RetryClient

async def main():
    async with RetryClient() as client:
        async with client.get('https://ya.ru') as response:
            print(response.status)

Look tests for more examples.

Be aware: last request returns as it is.

Documentation

RetryClient takes the same arguments as ClientSession[docs]

RetryClient has methods: - get - options - head - post - put - patch - put - delete

They are same as for ClientSession, but take one possible additional argument:

from typing import Optional, Set, Type

class RetryOptions:
    def __init__(
        self,
        attempts: int = 3,  # How many times we should retry
        start_timeout: float = 0.1,  # Base timeout time, then it exponentially grow
        max_timeout: float = 30.0,  # Max possible timeout between tries
        factor: float = 2.0,  # How much we increase timeout each time
        statuses: Optional[Set[int]] = None,  # On which statuses we should retry
        exceptions: Optional[Set[Type[Exception]]] = None,  # On which exceptions we should retry
    )
    ...

You can specify RetryOptions both for RetryClient and it’s methods. RetryOptions in methods override RetryOptions defined in RetryClient constructor.

Development

Before creating PR please run mypy: mypy -m aiohttp_retry