Integrate new closed group poller
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package org.session.libsession.messaging.sending_receiving.pollers
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import android.os.Handler
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import nl.komponents.kovenant.Promise
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import nl.komponents.kovenant.functional.bind
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import nl.komponents.kovenant.functional.map
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import org.session.libsession.messaging.MessagingModuleConfiguration
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import org.session.libsession.messaging.jobs.JobQueue
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import org.session.libsession.messaging.jobs.MessageReceiveJob
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import org.session.libsession.snode.SnodeAPI
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import org.session.libsignal.crypto.getRandomElementOrNull
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import org.session.libsignal.utilities.Log
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import org.session.libsignal.utilities.successBackground
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class ClosedGroupPoller {
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private var isPolling = false
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private val handler: Handler by lazy { Handler() }
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private val task = object : Runnable {
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override fun run() {
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poll()
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handler.postDelayed(this, pollInterval)
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}
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}
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// region Settings
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companion object {
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private val pollInterval: Long = 6 * 1000
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}
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// endregion
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// region Error
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class InsufficientSnodesException() : Exception("No snodes left to poll.")
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class PollingCanceledException() : Exception("Polling canceled.")
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// endregion
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// region Public API
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public fun startIfNeeded() {
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if (isPolling) { return }
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isPolling = true
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task.run()
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}
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public fun pollOnce(): List<Promise<Unit, Exception>> {
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if (isPolling) { return listOf() }
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isPolling = true
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return poll()
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}
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public fun stopIfNeeded() {
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isPolling = false
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handler.removeCallbacks(task)
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}
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// endregion
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// region Private API
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private fun poll(): List<Promise<Unit, Exception>> {
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if (!isPolling) { return listOf() }
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val storage = MessagingModuleConfiguration.shared.storage
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val publicKeys = storage.getAllActiveClosedGroupPublicKeys()
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return publicKeys.map { publicKey ->
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val promise = SnodeAPI.getSwarm(publicKey).bind { swarm ->
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val snode = swarm.getRandomElementOrNull() ?: throw InsufficientSnodesException() // Should be cryptographically secure
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if (!isPolling) { throw PollingCanceledException() }
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SnodeAPI.getRawMessages(snode, publicKey).map {SnodeAPI.parseRawMessagesResponse(it, snode, publicKey) }
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}
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promise.successBackground { messages ->
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if (!storage.isGroupActive(publicKey)) { return@successBackground }
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messages.forEach { envelope ->
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val job = MessageReceiveJob(envelope.toByteArray())
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JobQueue.shared.add(job)
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}
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}
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promise.fail {
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Log.d("Loki", "Polling failed for closed group with public key: $publicKey due to error: $it.")
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}
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promise.map { }
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}
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}
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// endregion
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}
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