CODESAMPLE

Space-Based Architecture - Kotlin

Space-Based Architecture Kotlin

The Space-Based Architecture pattern decouples components of an application by representing them as “spaces” that contain data and operations. Components communicate via message passing, avoiding direct dependencies. This promotes modularity, testability, and scalability. The Kotlin implementation uses data classes to represent messages and functions within each space. A central “message bus” (here, a simple list) facilitates communication. This approach leverages Kotlin’s conciseness for data representation and functional programming style for message handling, fitting its idiomatic approach to building loosely coupled systems.

// Space-Based Architecture in Kotlin

// Define message types
data class AddData(val data: String)
data class GetDataRequest
data class GetDataResponse(val data: String)

// Spaces - encapsulate data and operations
class DataSpace {
    private var data: String = ""

    fun handleMessage(message: Any) {
        when (message) {
            is AddData -> data = message.data
            is GetDataRequest -> {
                val response = GetDataResponse(data)
                messageBus.add(response) // Publish response
            }
        }
    }
}

class ProcessingSpace {
    fun handleMessage(message: Any) {
        if (message is GetDataResponse) {
            println("Processing Space received data: ${message.data}")
        }
    }
}

// Message Bus - central communication point
val messageBus = mutableListOf<Any>()

fun main() {
    val dataSpace = DataSpace()
    val processingSpace = ProcessingSpace()

    // Simulate message flow
    dataSpace.handleMessage(AddData("Hello, Space-Based Architecture!"))
    dataSpace.handleMessage(GetDataRequest())

    // Process messages from the bus
    messageBus.forEach { message ->
        processingSpace.handleMessage(message)
    }

    messageBus.clear() // Clear the bus after processing
}