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Dependency Injection Container Library

Project description

Injecta

Dependency Injection (DI) Container written in Python. Main component of the Pyfony Framework.

Installation

$ pip install injecta

Simple container initialization

(The following steps are covered in the ContainerInitializerTest)

To start using Injecta, create a simple config.yaml file to define your DI services:

parameters:
  api:
    endpoint: 'https://api.mycompany.com'

services:
    mycompany.api.ApiClient:
      arguments:
        - '@mycompany.api.Authenticator'

    mycompany.api.Authenticator:
      class: mycompany.authenticator.RestAuthenticator
      arguments:
        - '%api.endpoint%'
        - '%env(API_TOKEN)%'

Then, initialize the container:

from injecta.container.ContainerBuilder import ContainerBuilder
from injecta.config.YamlConfigReader import YamlConfigReader
from injecta.container.ContainerInitializer import ContainerInitializer

config = YamlConfigReader().read('/path/to/config.yaml')

containerBuild = ContainerBuilder().build(config)

container = ContainerInitializer().init(containerBuild)

Use container.get() to finally retrieve your service:

from mycompany.api.ApiClient import ApiClient

apiClient = container.get('mycompany.api.ApiClient') # type: ApiClient   
apiClient.get('/foo/bar')

Advanced examples

  1. Configuring services using parameters
  2. Service autowiring
  3. Using service factories
  4. Tagged services

Project details


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