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
syncandasyncREST calls from the same client. -
Improves upon serialization/deserialization over standard
jsonlibrary by usingsimdjson. -
Enables dynamic dataclass creation from responses via
lazyclsthat are based onpydanticBaseModel. -
Work with Timestamp / Datetime much quicker and simpler.
-
Manipulate
responseobjects as efficiently as possible. -
Wrapper functions for
fastapito 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=, 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_DESIREDenv to set the desired Timezone Default:America/Chicago -
TIMEZONE_FORMATenv to set the desired Timezone parse. Default:%Y-%m-%dT%H:%M:%SZ -
TimezCfgclass can be modified based on above two variables. -
get_timestamp: creates astrbased timestamp using local TZ -
get_timestamp_tz: creates astrbased timestamp using the desired TZ -
get_timestamp_utc: creates astrbased timestamp using UTC -
timer: Simpletimerfunction -
dtime: Get adatetimeobject. If nodatetimeobj is given, returnsdatetime.now(), otherwise will get the difference -
get_dtime_secs: converts adatetimeobject to total num secs. -
get_dtime_str: Converts adatetimeobject to a string. If nodatetimeobj is given, returnsdatetime.now()converted into desiredstrformat -
get_dtime_iso: attempts to standardize adatetimeobj from existingtzinto an iso/desired-formatteddatetime -
dtime_parse: attempts to parse a string, timestamp, etc. into adatetimeobj -
dtime_diff: gets the difference between twodatetimeobjects.
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
"""
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