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