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Auction status change and confirmation

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artemis
2026-08-27 20:16:43 +03:00
parent cab27eddab
commit 88b187e6a3
7 changed files with 82 additions and 37 deletions
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app/actors/auctions/AuctionPublisher.scala
+44 -14
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@@ -4,20 +4,25 @@ import com.google.inject.Provides
import com.hivemq.client.mqtt.datatypes.MqttQos
import com.hivemq.client.mqtt.mqtt5.Mqtt5AsyncClient
import com.hivemq.client.mqtt.mqtt5.message.publish.Mqtt5Publish
import models.{Auction, User}
import dao.AuctionsDAO
import models.{Auction, AuctionStatus, User}
import mqttClient.MqttClientFactory
import org.apache.pekko.actor.typed.Behavior
import org.apache.pekko.actor.typed.{ActorRef, Behavior}
import org.apache.pekko.actor.typed.scaladsl.Behaviors
import play.api.{Configuration, Logging}
import play.api.libs.concurrent.ActorModule
import play.api.libs.json.{JsObject, Json}
import play.api.libs.json.{JsBoolean, JsObject, JsValue, Json}
import java.nio.charset.StandardCharsets
import javax.inject.Singleton
import scala.jdk.OptionConverters.RichOptional
import scala.util.Random
object AuctionPublisher extends ActorModule with Logging {
sealed trait Command
private case object Ready extends Command
case class Publish(auction: Auction, author: User) extends Command
private case class AuctionConfirmed(id: Int, responseTopic: String) extends Command
private final val topic = "auctions/created"
@@ -25,38 +30,63 @@ object AuctionPublisher extends ActorModule with Logging {
@Provides
@Singleton
def apply(configuration: Configuration): Behavior[Message] = Behaviors.setup { context =>
def apply(configuration: Configuration, auctionsDAO: AuctionsDAO): Behavior[Message] = Behaviors.setup { context =>
val client = MqttClientFactory.createClient(configuration, "-auction-publisher")
client.connect().whenComplete { (_action, _throwable) =>
context.self ! Ready
}
idle(client)
idle(context.self, client, auctionsDAO)
}
private def idle(client: Mqtt5AsyncClient, waitingPublishes: Seq[Publish] = List()): Behaviors.Receive[Command] = Behaviors.receiveMessage[Command] {
private def idle(self: ActorRef[Message], client: Mqtt5AsyncClient, auctionsDAO: AuctionsDAO, waitingPublishes: Seq[Publish] = List()): Behaviors.Receive[Command] = Behaviors.receiveMessage[Command] {
case p: Publish =>
idle(client, waitingPublishes :+ p)
idle(self, client, auctionsDAO, waitingPublishes :+ p)
case Ready =>
for { publish <- waitingPublishes } publishAuction(client, publish.auction, publish.author)
ready(client)
for { publish <- waitingPublishes } publishAuction(client, publish.auction, publish.author, self)
ready(self, client, auctionsDAO)
case message @ AuctionConfirmed(_, _) =>
logger.warn(s"Received impossible message $message")
idle(self, client, auctionsDAO, waitingPublishes)
}
private def ready(client: Mqtt5AsyncClient): Behaviors.Receive[Command] = Behaviors.receiveMessage[Command] {
private def ready(self: ActorRef[Message], client: Mqtt5AsyncClient, auctionsDAO: AuctionsDAO): Behaviors.Receive[Command] = Behaviors.receiveMessage[Command] {
case Publish(auction, author) =>
publishAuction(client, auction, author)
ready(client)
publishAuction(client, auction, author, self)
ready(self, client, auctionsDAO)
case AuctionConfirmed(auctionId, responseTopic) =>
client.unsubscribeWith().topicFilter(responseTopic).send()
auctionsDAO.changeStatus(auctionId, AuctionStatus.Ready)
ready(self, client, auctionsDAO)
case Ready =>
logger.warn("Message Ready received after having already received it before")
ready(client)
ready(self, client, auctionsDAO)
}
private def publishAuction(client: Mqtt5AsyncClient, auction: Auction, author: User): Unit = {
private def publishAuction(client: Mqtt5AsyncClient, auction: Auction, author: User, self: ActorRef[Command]): Unit = {
val payload = Json.toBytes(auction_payload(auction, author))
val responseTopic = s"auction-validate/${auction.gid}-${Random.alphanumeric.take(8).mkString}"
client.subscribeWith()
.topicFilter(responseTopic)
.callback{ message =>
logger.info(s"Receiving message on ${message.getTopic}")
logger.info(message.getPayloadAsBytes.mkString("Array(", ", ", ")"))
message.getPayload.toScala
.map(StandardCharsets.UTF_8.decode(_).toString)
.map(Json.parse)
.flatMap(v => (v \ "ok").toOption)
.map{
case b: JsBoolean if b.value => self ! AuctionConfirmed(auction.id.get, responseTopic)
// TODO: add error handling
}
}
.send()
val publish = Mqtt5Publish.builder()
.topic(topic)
.payload(payload)
.responseTopic(responseTopic)
.qos(MqttQos.EXACTLY_ONCE)
.build()
logger.info(s"Publishing auction ${auction.id.getOrElse(-1)}")