Various strategies for sending requests
Project description
aio-request
This library simplifies an interaction between microservices:
- Allows sending requests using various strategies
- Propagates a deadline and a priority of requests
- Exposes client/server metrics
Example:
import aiohttp
import aio_request
async with aiohttp.ClientSession() as client_session:
client = aio_request.setup(
transport=aio_request.AioHttpTransport(client_session),
endpoint="http://endpoint:8080/",
)
response_ctx = client.request(
aio_request.get("thing"),
deadline=aio_request.Deadline.from_timeout(5)
)
async with response_ctx as response:
pass # process response here
Request strategies
The following strategies are supported:
- Single attempt. Only one attempt is sent.
- Sequential. Attempts are sent sequentially with delays between them.
- Parallel. Attempts are sent in parallel one by one with delays between them.
Attempts count and delays are configurable.
Example:
import aiohttp
import aio_request
async with aiohttp.ClientSession() as client_session:
client = aio_request.setup(
transport=aio_request.AioHttpTransport(client_session),
endpoint="http://endpoint:8080/",
)
response_ctx = client.request(
aio_request.get("thing"),
deadline=aio_request.Deadline.from_timeout(5),
strategy=aio_request.parallel_strategy(
attempts_count=3,
delays_provider=aio_request.linear_delays(min_delay_seconds=0.1, delay_multiplier=0.1)
)
)
async with response_ctx as response:
pass # process response here
Deadline & priority propagation
To enable it for the server side a middleware should be configured:
import aiohttp.web
import aio_request
app = aiohttp.web.Application(middlewares=[aio_request.aiohttp_middleware_factory()])
Expose client/server metrics
To enable client metrics a metrics provider should be passed to the transport:
import aiohttp
import aio_request
async with aiohttp.ClientSession() as client_session:
client = aio_request.setup(
transport=aio_request.AioHttpTransport(
client_session,
metrics_provider=aio_request.PROMETHEUS_METRICS_PROVIDER
),
endpoint="http://endpoint:8080/",
)
It is an example of how it should be done for aiohttp and prometheus.
To enable client metrics a metrics provider should be passed to the middleware:
import aiohttp.web
import aio_request
app = aiohttp.web.Application(
middlewares=[
aio_request.aiohttp_middleware_factory(
metrics_provider=aio_request.PROMETHEUS_METRICS_PROVIDER
)
]
)
v0.1.12 (2021-07-21)
v0.1.11 (2021-07-21)
- Fix Request.update_headers, add Request.extend_headers #59
v0.1.10 (2021-07-20)
- Add Response.is_json property to check whether content-type is json compatible #58
- Tracing support #54,
- Configuration of a new pipeline
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
aio-request-0.1.12.tar.gz
(17.7 kB
view details)
Built Distribution
File details
Details for the file aio-request-0.1.12.tar.gz.
File metadata
- Download URL: aio-request-0.1.12.tar.gz
- Upload date:
- Size: 17.7 kB
- Tags: Source
- Uploaded using Trusted Publishing? No
- Uploaded via: twine/3.4.2 importlib_metadata/4.6.1 pkginfo/1.7.1 requests/2.26.0 requests-toolbelt/0.9.1 tqdm/4.61.2 CPython/3.9.6
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 | 49915a46e5989bd6dd98dfd4cccec2c861c0cac57396edbb1172cf4d00427be2 |
|
| MD5 | 291b7612df85b98b457f1df71e259097 |
|
| BLAKE2b-256 | 622859af7839eada693dc72b8e1d199e74b76a44d2d914f738bec98152535cc2 |
Provenance
File details
Details for the file aio_request-0.1.12-py3-none-any.whl.
File metadata
- Download URL: aio_request-0.1.12-py3-none-any.whl
- Upload date:
- Size: 22.6 kB
- Tags: Python 3
- Uploaded using Trusted Publishing? No
- Uploaded via: twine/3.4.2 importlib_metadata/4.6.1 pkginfo/1.7.1 requests/2.26.0 requests-toolbelt/0.9.1 tqdm/4.61.2 CPython/3.9.6
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 | 0d74d0b501253aa8a4038c2ef2a50ac8d6f71ea8a0a31adbfafa1f5bd900c785 |
|
| MD5 | 4755c633d8523576d69efbe0f7da11fa |
|
| BLAKE2b-256 | 11732a181bec1d3af863a4a2b4c505493a86541ebc7674ec7a12a2733b2fac26 |
