delfick-app 0.5

Customized App mainline helper

An opinionated class to build a mainline executable.

Usage

from my_app import MyApp, VERSION

from delfick_app import App
import logging

class MyApp(App):

    # Setting both VERSION and boto_useragent_name
    # Will change boto's useragent to include {name}/{VERSION}
    # Not setting them means boto's useragent is unchanged
    VERSION = VERSION
    boto_useragent_name = "myapp"

    # Cli options for configuration special cli options
    cli_categories = ['app']
    cli_description = "My amazing app"
    cli_environment_defaults = {"CONFIG_LOCATION": ("--config", './config.yml')}
    cli_positional_replacements = [('--task', 'list_tasks'), '--environment']

    def execute(self, args, cli_args, logging_handler):
        app = MyApp()
        app.start(cli_args)

    def setup_other_logging(self, args, verbose=False, silent=False, debug=False):
        logging.getLogger("boto").setLevel([logging.CRITICAL, logging.ERROR][verbose or debug])

    def specify_other_args(self, parser, defaults):
        parser.add_argument("--task"
            , help = "The task to execute"
            , **defaults['--task']
            )

        parser.add_argument("--environment"
            , help = "the environment to use"
            , **defaults["--environment"]
            )

        parser.add_argument("--config"
            , help = "The configuration to use"
            , **defaults["--config"]
            )

main = MyApp.main
if __name__ == '__main__':
    main()

With the above configuration, the following three usages are equivalent:

$ ./app.py some_task dev --config ./config.yml

$ ./app.py --task some_task --environment dev --config ./config.yml

$ APP_CONFIG=./config.yml ./app.py some_task dev

Installation

Just use pip:

$ pip install delfick_app

Tests

Run the following:

$ mkvirtualenv delfick_app
$ workon delfick_app
$ pip install -e .
$ pip install -e ".[tests]"

To install delfick_app and it’s dependencies.

Then to run the tests:

$ ./test.sh