Dead simple Service Locator

This is simple Service Locator in Kotlin. I'm building this as a form of learning reified type parameter, and publishing library into JitPack.

Setup

Gradle

Step 1. Add the JitPack repository to your build file

Add it in your root build.gradle at the end of repositories:

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

Step 2. Add the dependency

dependencies {
    implementation 'com.github.fathonyfath:dssl:Tag'
}

Usage

There is only 3 API you can use to build your Service Locator.

val module = module {
    // Create singleton, instance will be retained in the module scope (named parameter is optional)
    single { ... }

    // Create factory, instance will be recreated everytime this instance is requested (named parameter is optional)
    factory { ... }

    single {
        // get function will try to resolve the dependency of Foo class
        Foo(get())
    }
}

// Resolve dependency
module.get()

Example

interface Foo
class FooImpl : Foo

class Bar(foo: Foo)

// Create module
val module = module {
    // Provide singleton dependency of Foo with name "fooInstance1"
    single<Foo>(named = "fooInstance1") {
        FooImpl()
    }
    
    // Provide factory dependency of Foo with name "fooInstance2", this will recreated everytime Foo with name "fooInstance2" is requested
    factory<Foo>(named = "fooInstance2") {
        FooImpl()
    }

    // Resolve dependency of Bar with Foo named "fooInstance2"
    single {
        Bar(get(named = "fooInstance1"))
    }
}

// Resolve dependency of Bar from module
val barInstance = module.get<Bar>()