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package org.opendc.common.utils
import java.io.File
import java.net.URI
import java.net.http.*
import java.net.http.HttpResponse.BodyHandlers.ofString
/**
* Singleton class representing the real datacenter client.
* The client is asynchronous and initiates the connection first.
*
* @constructor Initiates the connection.
*
* @author Mateusz Kwiatkowski
*/
public class HTTPClient private constructor() {
public companion object {
private var instance: HTTPClient? = null
private var client: HttpClient? = null
private var handshake = HttpRequest.newBuilder()
.uri(URI.create("http://localhost:8080/"))
.build()
public fun getInstance(): HTTPClient? {
if (instance == null) {
try {
client = HttpClient.newBuilder().build()
val response = client?.send(handshake, ofString())
check(response?.statusCode() == 200)
} catch (e: IllegalStateException) {
println("${e.message}")
}
instance = HTTPClient()
}
return instance
}
}
// TODO: this class must send the experiment JSON file to the digital twin
public fun sendExperiment(experiment: File) {
val body : HttpRequest.BodyPublisher
val request = HttpRequest.newBuilder()
.uri(URI.create("http://localhost:8080/"))
.header("Content-type", "application/json")
// TODO: this is obviously wrong, find an efficient way to send JSON over network
.POST(HttpRequest.BodyPublishers.ofString(experiment))
.build()
println("Haha")
}
}
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