Python service registry used as a service container as well as defines and boots services
Project description
serviceregistry
Service Registry for python apps
For instance during the lifecycle of the application you want 2 things:
- store system variables
- store service with certain initialization code and initialize them on boot of the application
let's look an example to understand this further..
installation
pip install serviceregistry
how to use
from serviceregistry.services import Container, Registry
import meerkat.configurations.app.settings
def create_container(app):
container = Container()
container.set(settings.Props.FALCON, app)
return container
def boot(container):
service_registry = Registry()
for service in settings.services:
service_registry.register(service)
service_registry.boot(container)
container = create_container(create_app())
boot(container)
here we define the props enum as constants to a system vars
# settings.py
from serviceregistry.services import Props as BaseProps
services = [
LoggingService(),
EnvironmentService(),
]
class Props(BaseProps):
DI_PROVIDER = 0
FALCON = 1
APP_URL = "APP_URL"
MONGO_HOST = "MONGO_HOST"
MONGO_PORT = "MONGO_PORT"
MONGO_DB = "MONGO_DB"
and here is the environment service, which registers certain system variables from environment variables
import os
from serviceregistry.services import BootableService, Container
class EnvironmentService(BootableService):
def boot(self, container: Container):
from meerkat.configurations.app.settings import Props
container.set(Props.APP_URL, os.environ.get(Props.APP_URL.value))
container.set(Props.MONGO_HOST, os.environ.get(Props.MONGO_HOST.value))
container.set(Props.MONGO_PORT, os.environ.get(Props.MONGO_PORT.value))
container.set(Props.MONGO_DB, os.environ.get(Props.MONGO_DB.value))
Logging service
import logging as registry_logging
import sys
import serviceregistry.services
class LoggingService(serviceregistry.services.BootableService):
def boot(self):
registry_logging.basicConfig(
format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
level=registry_logging.DEBUG,
)
registry_logging.getLogger().addHandler(
registry_logging.StreamHandler(sys.stdout)
)
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