boots: Boot application by plugins

[ application, factory, ioc, library, mit, monad, program ] [ Propose Tags ]

Boot application by using plugins.


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Versions [faq] 0, 0.0.1, 0.0.2, 0.0.3, 0.0.100, 0.1, 0.1.1, 0.2, 0.2.0.1 (info)
Dependencies base (>=4.10 && <5), boots, data-default (>=0.7.1.1 && <0.8), exceptions (>=0.10.2 && <0.11), fast-logger (>=2.4.16 && <2.5), microlens (>=0.4.10 && <0.5), monad-logger (>=0.3.30 && <0.4), mtl (>=2.2.2 && <2.3), salak (==0.3.1), salak-yaml (==0.3.1), text (>=1.2.3.1 && <1.3), unliftio-core (>=0.1.2.0 && <0.2) [details]
License MIT
Copyright 2019 Daniel YU
Author Daniel YU
Maintainer leptonyu@gmail.com
Revised Revision 1 made by leptonyu at Thu Sep 5 02:56:34 UTC 2019
Category Library
Home page https://github.com/leptonyu/boots#readme
Uploaded by leptonyu at Sun Jul 28 03:01:48 UTC 2019
Distributions NixOS:0.2.0.1
Executables boots-exe
Downloads 464 total (309 in the last 30 days)
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Readme for boots-0.0.2

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boots

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Boot applications by using plugins.

Motivation

Simplify to create an application in Haskell.

When we decide to create an application using Haskell. We may need using configurations, loggers as basic functions. If this application needs storages, caches, etc., then we have to weaving the management of connection of these facilities into the application. Connections need to be created before and be destroyed after using them. There is a common strategy to manage connections, that is using Control.Monad.Cont. Then we can encapsulate the management of connections separately. For example, we can write a database plugin Plugin cxt m DBConnection, which can manage the database connections in monad m with context cxt. Context cxt may be requested for configurations or logging functions. When all the components of application are encapsulated by plugins, then building an application will be simplified.

Have a Try

main :: IO ()
main = bootApp (pluginSimple "application") go
  where
    go = forever $ do
      user <- require "user"              -- Request for configuration.
      logInfo $ "Hello, " <> user <> "!"  -- Request for logging.
      liftIO $ threadDelay 1000000