com.pubnub.internal.subscribe.eventengine.effect.effectprovider.ReceiveMessagesProviderImpl.kt Maven / Gradle / Ivy

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PubNub is a cross-platform client-to-client (1:1 and 1:many) push service in the cloud, capable of broadcasting real-time messages to millions of web and mobile clients simultaneously, in less than a quarter second!

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package com.pubnub.internal.subscribe.eventengine.effect.effectprovider

import com.pubnub.api.endpoints.remoteaction.RemoteAction
import com.pubnub.api.endpoints.remoteaction.map
import com.pubnub.api.models.consumer.pubsub.PNEvent
import com.pubnub.internal.PubNubImpl
import com.pubnub.internal.endpoints.pubsub.SubscribeEndpoint
import com.pubnub.internal.subscribe.eventengine.effect.ReceiveMessagesResult
import com.pubnub.internal.subscribe.eventengine.event.SubscriptionCursor
import com.pubnub.internal.workers.SubscribeMessageProcessor

internal class ReceiveMessagesProviderImpl(val pubNub: PubNubImpl, val messageProcessor: SubscribeMessageProcessor) :
    ReceiveMessagesProvider {
    override fun getReceiveMessagesRemoteAction(
        channels: Set,
        channelGroups: Set,
        subscriptionCursor: SubscriptionCursor,
    ): RemoteAction {
        val subscribe = SubscribeEndpoint(pubNub)
        subscribe.channels = channels.toList()
        subscribe.channelGroups = channelGroups.toList()
        subscribe.timetoken = subscriptionCursor.timetoken
        subscribe.region = subscriptionCursor.region
        subscribe.filterExpression = pubNub.configuration.filterExpression.ifBlank { null }
        return subscribe.map {
            val sdkMessages: List =
                it.messages.mapNotNull {
                    messageProcessor.processIncomingPayload(it)
                }
            ReceiveMessagesResult(
                sdkMessages,
                SubscriptionCursor(it.metadata.timetoken, it.metadata.region),
            )
        }
    }
}