Adds Amber Task Runner

[eliasjpr]

As a developer, I want to be able to perform tasks using the framework.

• Adds Perform command to execute tasks
• Tasks should be inherited from Amber::Tasks::Task
• The task should declare a perform method. This is the method that gets
  called.

✋ @aarongodin

[imdrasil]

I've just took a quick look some missed a lot of things but what about sam?

[eliasjpr]

Hey @imdrasil

While I personally like sam a lot I find it that it will add a lot of complexity when we only need a simple way to define tasks it has to be ran separately from Amber CLI and it has an extensive DSL which adds a learning curve.

We are more than happy to feature SAM in Amber. What do you think of creating a Recipe using Amber with SAM?

[drujensen]

looks great! missing generator though.

amber g task FakeTask

[imdrasil]

@eliasjpr nice idea, will take a look

[eliasjpr]

@drujensen Will add the missing generator.

@imdrasil Open a PR here https://github.com/amberframework/online-docs and I will merge. Thank you this will be great!

[elorest]

How does this load the amber environment? I'm not seeing any requires for models or libraries loaded by the amber project. Am I missing something?

[drujensen]

@elorest good catch! I'm not a big fan of how rails does this with the task => :environment syntax. Should we always include the config/** so the environment loads or should this be up to the user to include?

[eliasjpr]

@elorest I forgot to mention about this in the PR description.

This was by design. It does not load the amber environment. This is to make it flexible to the user, I personally don't think we should be loading the amber environment for every task the user should determine when he needs the amber environment. The user just needs to require amber on the task to have it load.

This is pretty much how Rails does it for Rails runner

[eliasjpr]

Tasks generators will come in a separate PR

[elorest]

@eliasjpr @drujensen

"As a developer, I want to be able to perform tasks using the framework." Seems to imply that it uses the framework.

If we're not loading the amber environment how is this an advantage over just creating a crystal script that can be run with crystal your_task.cr?

Also is it a concern that if we require "your_project.cr" it will load all the controllers and everything? Rails only loads models and configuration for rake tasks. I feel that in order for this to be useful we need to implement a simple way to load the appropriate parts of the project environment.

[drujensen]

@elorest I agree. I rarely create a rake task that doesn't load the environment. Rails provides both options. Either we document how to do this or we provide a way to do it.

It's pretty simple:

require "../config/**"

at the top of your rake task in order to include the environment, but I don't think its intuitive enough.

Maybe we allow the generator to add it and then the user can simply remove it if they don't want the environment added.

We can comment in the code saying # comment the next line out if you don't want to load the environment or something like that.

WDYT?

[drujensen]

or we can default to not including the environment and say # uncomment the next line to include the environment