Async and Sync wrapper client around httpx, fastapi, date stuff

lazyapi

Async and Sync wrapper client around httpx, fastapi, and datetime stuff.

Motivation

This library is forked from an internal project that works with a lot of backend APIs, namely interacting with kubernetes's API. In certain cases, you want to use sync where async isnt suitable, but managing two seperate sync / async client can be annoying, especially when you aren't initializing from async at the start.

This project aims to solve a few problems:

Enables both sync and async REST calls from the same client.
Improves upon serialization/deserialization over standard json library by using simdjson.
Enables dynamic dataclass creation from responses via lazycls that are based on pydantic BaseModel.
Work with Timestamp / Datetime much quicker and simpler.
Manipulate response objects as efficiently as possible.
Wrapper functions for fastapi to enable quick api creation.

Quickstart

pip install --upgrade lazyapi

from lazyapi import APIClient

# Allows initialization of the client from sync call. 
# The client has both async and sync call methods.
apiclient = APIClient(
    base_url = 'https://google.com',
    headers = {},
    module_name = 'customlib',
)

# All requests will be routed through the base_url
# Sync Method
resp = apiclient.get(path='/search?...', **kwargs)

# Async Method
resp = await apiclient.async_get(path='/search?...', **kwargs)

"""
Both yield the same results, only differing in the clientType = sync | async
The underlying classes are auto-generated from Pydantic BaseModels, so anything you can do with Pydantic Models, you can do with these.

> HttpResponse(resp=<Response [301 Moved Permanently]>, clientType='sync', method='get', timestamp=datetime.datetime(2021, 12, 1, 7, 55, 10, 478544, tzinfo=datetime.timezone.utc))

class HttpResponse(BaseCls):
    resp: Response
    clientType: str = 'sync'
    method: str = 'get'
    timestamp: str = Field(default_factory=get_timestamp_utc)

DefaultHeaders = {
    'Accept': 'application/json',
    'Content-Type': 'application/json'
}

---
Client Configs from Env Variables

class HttpCfg:
    timeout = envToFloat('HTTPX_TIMEOUT', 30.0)
    keep_alive = envToInt('HTTPX_KEEPALIVE', 50)
    max_connect = envToInt('HTTPX_MAXCONNECT', 200)
    headers = envToDict('HTTPX_HEADERS', default=DefaultHeaders)

class AsyncHttpCfg:
    timeout = envToFloat('HTTPX_ASYNC_TIMEOUT', 30.0)
    keep_alive = envToInt('HTTPX_ASYNC_KEEPALIVE', 50)
    max_connect = envToInt('HTTPX_ASYNC_MAXCONNECT', 200)
    headers = envToDict('HTTPX_ASYNC_HEADERS', default=DefaultHeaders)

"""

API Specific Features

API Responses

Responses returned from APIClient are of lazyapi.classes.HttpResponse classes which wraps httpx.response in a BaseModel to do response validation, and interfacing with the response such as:

.is_error -> bool
.is_redirect -> bool
.data -> resp.json()
.data_obj -> SimdJson.Object / SimdJson.Array
.data_cls -> lazycls.LazyCls
.timestamp -> str with utc timestamp of request

Time/Datetime Functions

lazyapi.timez: Includes a multitude of datetime based functions to work with timestamp / time / duration.

TIMEZONE_DESIRED env to set the desired Timezone Default: America/Chicago
TIMEZONE_FORMAT env to set the desired Timezone parse. Default: %Y-%m-%dT%H:%M:%SZ
TimezCfg class can be modified based on above two variables.
get_timestamp: creates a str based timestamp using local TZ
get_timestamp_tz: creates a str based timestamp using the desired TZ
get_timestamp_utc: creates a str based timestamp using UTC
timer: Simple timer function
dtime: Get a datetime object. If no datetime obj is given, returns datetime.now(), otherwise will get the difference
get_dtime_secs: converts a datetime object to total num secs.
get_dtime_str: Converts a datetime object to a string. If no datetime obj is given, returns datetime.now() converted into desired str format
get_dtime_iso: attempts to standardize a datetime obj from existing tz into an iso/desired-formatted datetime
dtime_parse: attempts to parse a string, timestamp, etc. into a datetime obj
dtime_diff: gets the difference between two datetime objects.

FastAPI wrapper functions

Primarily used to create subapp mounts behind the primary fastapi app.

from lazyapi import create_fastapi, FastAPICfg

"""
class FastAPICfg:
    app_title = envToStr('FASTAPI_TITLE', 'LazyAPI')
    app_desc = envToStr('FASTAPI_DESC', 'Just a LazyAPI Backend')
    app_version = envToStr('FASTAPI_VERSION', 'v0.0.1')
    include_middleware = envToBool('FASTAPI_MIDDLEWARE', 'true')
    allow_origins = envToList('FASTAPI_ALLOW_ORIGINS', default=["*"])
    allow_methods = envToList('FASTAPI_ALLOW_METHODS', default=["*"])
    allow_headers = envToList('FASTAPI_ALLOW_HEADERS', default=["*"])
    allow_credentials = envToBool('FASTAPI_ALLOW_CREDENTIALS', 'true')

"""
app = create_fastapiapp_name: str, title: str = None, desc: str = None, version: str = None)
subapp = create_fastapi(app_name: 'subapp')

@subapp.get('/healthz')
async def healthcheck() -> PlainTextResponse:
    return PlainTextResponse(content='ok')


app.mount('/subapp', subapp)

if __name__ == '__main__':
    import uvicorn
    uvicorn.run("main:app")

"""
Now you can expect the route at
/subapp/healthz


"""

Async and Sync wrapper client around httpx, fastapi, date stuff

lazyapi

Motivation

Quickstart