Mavericks 2: continue replacing Rx

2024-07-22 10:34:58 +00:00 · 2021-10-04 17:50:45 +02:00 · 2021-10-04 17:50:45 +02:00 · fadbb60f90
parent f72a34ed08
commit fadbb60f90
24 changed files with 417 additions and 355 deletions
--- a/vector/src/main/java/im/vector/app/features/discovery/DiscoverySettingsViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/discovery/DiscoverySettingsViewModel.kt
@ -15,7 +15,6 @@
 */
 package im.vector.app.features.discovery

-import androidx.lifecycle.viewModelScope
 import com.airbnb.mvrx.Async
 import com.airbnb.mvrx.Fail
 import com.airbnb.mvrx.FragmentViewModelContext
@ -25,17 +24,19 @@ import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.Uninitialized
 import com.airbnb.mvrx.ViewModelContext
 import dagger.assisted.Assisted
-import dagger.assisted.AssistedInject
 import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
 import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.platform.VectorViewModel
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.identity.IdentityServiceError
 import org.matrix.android.sdk.api.session.identity.IdentityServiceListener
 import org.matrix.android.sdk.api.session.identity.SharedState
 import org.matrix.android.sdk.api.session.identity.ThreePid
-import org.matrix.android.sdk.rx.rx
+import org.matrix.android.sdk.flow.flow

 class DiscoverySettingsViewModel @AssistedInject constructor(
        @Assisted initialState: DiscoverySettingsState,
@ -84,12 +85,12 @@ class DiscoverySettingsViewModel @AssistedInject constructor(
    }

    private fun observeThreePids() {
-        session.rx()
+        session.flow()
                .liveThreePIds(true)
-                .subscribe {
+                .onEach {
                    retrieveBinding(it)
                }
-                .disposeOnClear()
+                .launchIn(viewModelScope)
    }

    override fun onCleared() {
--- a/vector/src/main/java/im/vector/app/features/home/HomeActivity.kt
+++ b/vector/src/main/java/im/vector/app/features/home/HomeActivity.kt
@ -27,6 +27,7 @@ import android.view.MenuItem
 import androidx.core.view.GravityCompat
 import androidx.core.view.isVisible
 import androidx.drawerlayout.widget.DrawerLayout
+import androidx.lifecycle.lifecycleScope
 import com.airbnb.mvrx.Mavericks
 import com.airbnb.mvrx.viewModel
 import com.google.android.material.appbar.MaterialToolbar
@ -72,6 +73,7 @@ import im.vector.app.features.workers.signout.ServerBackupStatusViewModel
 import im.vector.app.features.workers.signout.ServerBackupStatusViewState
 import im.vector.app.push.fcm.FcmHelper
 import io.reactivex.android.schedulers.AndroidSchedulers
+import kotlinx.coroutines.launch
 import kotlinx.parcelize.Parcelize
 import org.matrix.android.sdk.api.session.initsync.SyncStatusService
 import org.matrix.android.sdk.api.session.permalinks.PermalinkService
@ -288,26 +290,23 @@ class HomeActivity :
                }
                else                                                  -> deepLink
            }
-            permalinkHandler.launch(
-                    context = this,
-                    deepLink = resolvedLink,
-                    navigationInterceptor = this,
-                    buildTask = true
-            )
-                    // .delay(500, TimeUnit.MILLISECONDS)
-                    .observeOn(AndroidSchedulers.mainThread())
-                    .subscribe { isHandled ->
-                        if (!isHandled) {
-                            val isMatrixToLink = deepLink.startsWith(PermalinkService.MATRIX_TO_URL_BASE)
-                                    || deepLink.startsWith(MATRIX_TO_CUSTOM_SCHEME_URL_BASE)
-                            MaterialAlertDialogBuilder(this)
-                                    .setTitle(R.string.dialog_title_error)
-                                    .setMessage(if (isMatrixToLink) R.string.permalink_malformed else R.string.universal_link_malformed)
-                                    .setPositiveButton(R.string.ok, null)
-                                    .show()
-                        }
-                    }
-                    .disposeOnDestroy()
+            lifecycleScope.launch {
+                val isHandled = permalinkHandler.launch(
+                        context = this@HomeActivity,
+                        deepLink = resolvedLink,
+                        navigationInterceptor = this@HomeActivity,
+                        buildTask = true
+                )
+                if (!isHandled) {
+                    val isMatrixToLink = deepLink.startsWith(PermalinkService.MATRIX_TO_URL_BASE)
+                            || deepLink.startsWith(MATRIX_TO_CUSTOM_SCHEME_URL_BASE)
+                    MaterialAlertDialogBuilder(this@HomeActivity)
+                            .setTitle(R.string.dialog_title_error)
+                            .setMessage(if (isMatrixToLink) R.string.permalink_malformed else R.string.universal_link_malformed)
+                            .setPositiveButton(R.string.ok, null)
+                            .show()
+                }
+            }
        }
    }

--- a/vector/src/main/java/im/vector/app/features/home/HomeActivityViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/HomeActivityViewModel.kt
@ -16,6 +16,7 @@

 package im.vector.app.features.home

+import androidx.lifecycle.asFlow
 import androidx.lifecycle.viewModelScope
 import com.airbnb.mvrx.Mavericks
 import com.airbnb.mvrx.MavericksViewModelFactory
@ -31,6 +32,8 @@ import im.vector.app.features.session.coroutineScope
 import im.vector.app.features.settings.VectorPreferences
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.auth.UIABaseAuth
 import org.matrix.android.sdk.api.auth.UserInteractiveAuthInterceptor
@ -44,6 +47,7 @@ import org.matrix.android.sdk.api.session.initsync.SyncStatusService
 import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
 import org.matrix.android.sdk.api.util.toMatrixItem
+import org.matrix.android.sdk.flow.flow
 import org.matrix.android.sdk.internal.crypto.model.CryptoDeviceInfo
 import org.matrix.android.sdk.internal.crypto.model.MXUsersDevicesMap
 import org.matrix.android.sdk.internal.util.awaitCallback
@ -100,9 +104,9 @@ class HomeActivityViewModel @AssistedInject constructor(
                .crossSigningService().allPrivateKeysKnown()

        safeActiveSession
-                .rx()
+                .flow()
                .liveCrossSigningInfo(safeActiveSession.myUserId)
-                .subscribe {
+                .onEach {
                    val isVerified = it.getOrNull()?.isTrusted() ?: false
                    if (!isVerified && onceTrusted) {
                        // cross signing keys have been reset
@ -116,15 +120,15 @@ class HomeActivityViewModel @AssistedInject constructor(
                    }
                    onceTrusted = isVerified
                }
-                .disposeOnClear()
+                .launchIn(viewModelScope)
    }

    private fun observeInitialSync() {
        val session = activeSessionHolder.getSafeActiveSession() ?: return

        session.getSyncStatusLive()
-                .asObservable()
-                .subscribe { status ->
+                .asFlow()
+                .onEach { status ->
                    when (status) {
                        is SyncStatusService.Status.Progressing -> {
                            // Schedule a check of the bootstrap when the init sync will be finished
@ -145,7 +149,7 @@ class HomeActivityViewModel @AssistedInject constructor(
                        )
                    }
                }
-                .disposeOnClear()
+                .launchIn(viewModelScope)
    }

    /**
--- a/vector/src/main/java/im/vector/app/features/home/HomeDetailViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/HomeDetailViewModel.kt
@ -16,6 +16,7 @@

 package im.vector.app.features.home

+import androidx.lifecycle.asFlow
 import com.airbnb.mvrx.FragmentViewModelContext
 import com.airbnb.mvrx.MavericksViewModelFactory
 import com.airbnb.mvrx.ViewModelContext
@ -37,6 +38,7 @@ import im.vector.app.features.ui.UiStateRepository
 import io.reactivex.schedulers.Schedulers
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.flow.filterIsInstance
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.query.ActiveSpaceFilter
 import org.matrix.android.sdk.api.query.RoomCategoryFilter
@ -48,7 +50,6 @@ import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
 import org.matrix.android.sdk.api.util.toMatrixItem
 import org.matrix.android.sdk.flow.flow
 import org.matrix.android.sdk.rx.asObservable
-import org.matrix.android.sdk.rx.rx
 import timber.log.Timber
 import java.util.concurrent.TimeUnit

@ -182,25 +183,18 @@ class HomeDetailViewModel @AssistedInject constructor(@Assisted initialState: Ho
    }

    private fun observeSyncState() {
-        session.rx()
+        session.flow()
                .liveSyncState()
-                .subscribe { syncState ->
-                    setState {
-                        copy(syncState = syncState)
-                    }
+                .setOnEach { syncState ->
+                    copy(syncState = syncState)
                }
-                .disposeOnClear()

        session.getSyncStatusLive()
-                .asObservable()
-                .subscribe {
-                    if (it is SyncStatusService.Status.IncrementalSyncStatus) {
-                        setState {
-                            copy(incrementalSyncStatus = it)
-                        }
-                    }
+                .asFlow()
+                .filterIsInstance<SyncStatusService.Status.IncrementalSyncStatus>()
+                .setOnEach {
+                    copy(incrementalSyncStatus = it)
                }
-                .disposeOnClear()
    }

    private fun observeRoomGroupingMethod() {
--- a/vector/src/main/java/im/vector/app/features/home/room/breadcrumbs/BreadcrumbsViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/breadcrumbs/BreadcrumbsViewModel.kt
@ -30,6 +30,7 @@ import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
+import org.matrix.android.sdk.flow.flow
 import org.matrix.android.sdk.rx.rx

 class BreadcrumbsViewModel @AssistedInject constructor(@Assisted initialState: BreadcrumbsViewState,
@ -61,12 +62,11 @@ class BreadcrumbsViewModel @AssistedInject constructor(@Assisted initialState: B
    // PRIVATE METHODS *****************************************************************************

    private fun observeBreadcrumbs() {
-        session.rx()
+        session.flow()
                .liveBreadcrumbs(roomSummaryQueryParams {
                    displayName = QueryStringValue.NoCondition
                    memberships = listOf(Membership.JOIN)
                })
-                .observeOn(Schedulers.computation())
                .execute { asyncBreadcrumbs ->
                    copy(asyncBreadcrumbs = asyncBreadcrumbs)
                }
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt
@ -1590,57 +1590,54 @@ class RoomDetailFragment @Inject constructor(
        }
    }

-// TimelineEventController.Callback ************************************************************
+    // TimelineEventController.Callback ************************************************************

    override fun onUrlClicked(url: String, title: String): Boolean {
-        permalinkHandler
-                .launch(requireActivity(), url, object : NavigationInterceptor {
-                    override fun navToRoom(roomId: String?, eventId: String?, deepLink: Uri?): Boolean {
-                        // Same room?
-                        if (roomId == roomDetailArgs.roomId) {
-                            // Navigation to same room
-                            if (eventId == null) {
-                                showSnackWithMessage(getString(R.string.navigate_to_room_when_already_in_the_room))
-                            } else {
-                                // Highlight and scroll to this event
-                                roomDetailViewModel.handle(RoomDetailAction.NavigateToEvent(eventId, true))
+        viewLifecycleOwner.lifecycleScope.launch {
+            val isManaged = permalinkHandler
+                    .launch(requireActivity(), url, object : NavigationInterceptor {
+                        override fun navToRoom(roomId: String?, eventId: String?, deepLink: Uri?): Boolean {
+                            // Same room?
+                            if (roomId == roomDetailArgs.roomId) {
+                                // Navigation to same room
+                                if (eventId == null) {
+                                    showSnackWithMessage(getString(R.string.navigate_to_room_when_already_in_the_room))
+                                } else {
+                                    // Highlight and scroll to this event
+                                    roomDetailViewModel.handle(RoomDetailAction.NavigateToEvent(eventId, true))
+                                }
+                                return true
                            }
+                            // Not handled
+                            return false
+                        }
+
+                        override fun navToMemberProfile(userId: String, deepLink: Uri): Boolean {
+                            openRoomMemberProfile(userId)
                            return true
                        }
-                        // Not handled
-                        return false
-                    }
-
-                    override fun navToMemberProfile(userId: String, deepLink: Uri): Boolean {
-                        openRoomMemberProfile(userId)
-                        return true
-                    }
-                })
-                .subscribeOn(Schedulers.io())
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe { managed ->
-                    if (!managed) {
-                        if (title.isValidUrl() && url.isValidUrl() && URL(title).host != URL(url).host) {
-                            MaterialAlertDialogBuilder(requireActivity(), R.style.ThemeOverlay_Vector_MaterialAlertDialog_NegativeDestructive)
-                                    .setTitle(R.string.external_link_confirmation_title)
-                                    .setMessage(
-                                            getString(R.string.external_link_confirmation_message, title, url)
-                                                    .toSpannable()
-                                                    .colorizeMatchingText(url, colorProvider.getColorFromAttribute(R.attr.vctr_content_tertiary))
-                                                    .colorizeMatchingText(title, colorProvider.getColorFromAttribute(R.attr.vctr_content_tertiary))
-                                    )
-                                    .setPositiveButton(R.string._continue) { _, _ ->
-                                        openUrlInExternalBrowser(requireContext(), url)
-                                    }
-                                    .setNegativeButton(R.string.cancel, null)
-                                    .show()
-                        } else {
-                            // Open in external browser, in a new Tab
-                            openUrlInExternalBrowser(requireContext(), url)
-                        }
-                    }
+                    })
+            if (!isManaged) {
+                if (title.isValidUrl() && url.isValidUrl() && URL(title).host != URL(url).host) {
+                    MaterialAlertDialogBuilder(requireActivity(), R.style.ThemeOverlay_Vector_MaterialAlertDialog_NegativeDestructive)
+                            .setTitle(R.string.external_link_confirmation_title)
+                            .setMessage(
+                                    getString(R.string.external_link_confirmation_message, title, url)
+                                            .toSpannable()
+                                            .colorizeMatchingText(url, colorProvider.getColorFromAttribute(R.attr.vctr_content_tertiary))
+                                            .colorizeMatchingText(title, colorProvider.getColorFromAttribute(R.attr.vctr_content_tertiary))
+                            )
+                            .setPositiveButton(R.string._continue) { _, _ ->
+                                openUrlInExternalBrowser(requireContext(), url)
+                            }
+                            .setNegativeButton(R.string.cancel, null)
+                            .show()
+                } else {
+                    // Open in external browser, in a new Tab
+                    openUrlInExternalBrowser(requireContext(), url)
                }
-                .disposeOnDestroyView()
+            }
+        }
        // In fact it is always managed
        return true
    }
@ -1799,15 +1796,15 @@ class RoomDetailFragment @Inject constructor(
    }

    override fun onRoomCreateLinkClicked(url: String) {
-        permalinkHandler
-                .launch(requireContext(), url, object : NavigationInterceptor {
-                    override fun navToRoom(roomId: String?, eventId: String?, deepLink: Uri?): Boolean {
-                        requireActivity().finish()
-                        return false
-                    }
-                })
-                .subscribe()
-                .disposeOnDestroyView()
+        viewLifecycleOwner.lifecycleScope.launchWhenResumed {
+            permalinkHandler
+                    .launch(requireContext(), url, object : NavigationInterceptor {
+                        override fun navToRoom(roomId: String?, eventId: String?, deepLink: Uri?): Boolean {
+                            requireActivity().finish()
+                            return false
+                        }
+                    })
+        }
    }

    override fun onReadReceiptsClicked(readReceipts: List<ReadReceiptData>) {
--- a/vector/src/main/java/im/vector/app/features/invite/InvitesAcceptor.kt
+++ b/vector/src/main/java/im/vector/app/features/invite/InvitesAcceptor.kt
@ -18,10 +18,14 @@ package im.vector.app.features.invite

 import im.vector.app.ActiveSessionDataSource
 import im.vector.app.features.session.coroutineScope
-import io.reactivex.Observable
 import io.reactivex.disposables.Disposable
 import kotlinx.coroutines.async
-import kotlinx.coroutines.launch
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.debounce
+import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.sync.Semaphore
 import kotlinx.coroutines.sync.withPermit
 import org.matrix.android.sdk.api.extensions.orFalse
@ -31,9 +35,8 @@ import org.matrix.android.sdk.api.session.room.Room
 import org.matrix.android.sdk.api.session.room.members.ChangeMembershipState
 import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
-import org.matrix.android.sdk.rx.rx
+import org.matrix.android.sdk.flow.flow
 import timber.log.Timber
-import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 import javax.inject.Singleton

@ -50,7 +53,7 @@ class InvitesAcceptor @Inject constructor(

    private lateinit var activeSessionDisposable: Disposable
    private val shouldRejectRoomIds = mutableSetOf<String>()
-    private val invitedRoomDisposables = HashMap<String, Disposable>()
+    private val activeSessionIds = mutableSetOf<String>()
    private val semaphore = Semaphore(1)

    fun initialize() {
@ -71,34 +74,32 @@ class InvitesAcceptor @Inject constructor(
        if (!autoAcceptInvites.isEnabled) {
            return
        }
-        if (invitedRoomDisposables.containsKey(session.sessionId)) {
+        if (activeSessionIds.contains(session.sessionId)) {
            return
        }
+        activeSessionIds.add(session.sessionId)
        session.addListener(this)
        val roomQueryParams = roomSummaryQueryParams {
            this.memberships = listOf(Membership.INVITE)
        }
-        val rxSession = session.rx()
-        Observable
-                .combineLatest(
-                        rxSession.liveRoomSummaries(roomQueryParams),
-                        rxSession.liveRoomChangeMembershipState().debounce(1, TimeUnit.SECONDS),
-                        { invitedRooms, _ -> invitedRooms.map { it.roomId } }
-                )
+        val flowSession = session.flow()
+        combine(
+                flowSession.liveRoomSummaries(roomQueryParams),
+                flowSession.liveRoomChangeMembershipState().debounce(1000)
+        ) { invitedRooms, _ -> invitedRooms.map { it.roomId } }
                .filter { it.isNotEmpty() }
-                .subscribe { invitedRoomIds ->
-                    session.coroutineScope.launch {
-                        semaphore.withPermit {
-                            Timber.v("Invited roomIds: $invitedRoomIds")
-                            for (roomId in invitedRoomIds) {
-                                async { session.joinRoomSafely(roomId) }.start()
-                            }
-                        }
-                    }
-                }
-                .also {
-                    invitedRoomDisposables[session.sessionId] = it
-                }
+                .onEach { invitedRoomIds ->
+                    joinInvitedRooms(session, invitedRoomIds)
+                }.launchIn(session.coroutineScope)
+    }
+
+    private suspend fun joinInvitedRooms(session: Session, invitedRoomIds: List<String>) = coroutineScope {
+        semaphore.withPermit {
+            Timber.v("Invited roomIds: $invitedRoomIds")
+            for (roomId in invitedRoomIds) {
+                async { session.joinRoomSafely(roomId) }.start()
+            }
+        }
    }

    private suspend fun Session.joinRoomSafely(roomId: String) {
@ -138,6 +139,6 @@ class InvitesAcceptor @Inject constructor(

    override fun onSessionStopped(session: Session) {
        session.removeListener(this)
-        invitedRoomDisposables.remove(session.sessionId)?.dispose()
+        activeSessionIds.remove(session.sessionId)
    }
 }
--- a/vector/src/main/java/im/vector/app/features/permalink/PermalinkHandler.kt
+++ b/vector/src/main/java/im/vector/app/features/permalink/PermalinkHandler.kt
@ -23,10 +23,10 @@ import im.vector.app.core.di.ActiveSessionHolder
 import im.vector.app.core.utils.toast
 import im.vector.app.features.navigation.Navigator
 import im.vector.app.features.roomdirectory.roompreview.RoomPreviewData
-import io.reactivex.Single
-import io.reactivex.android.schedulers.AndroidSchedulers
-import io.reactivex.schedulers.Schedulers
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import org.matrix.android.sdk.api.extensions.orFalse
+import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.session.permalinks.PermalinkData
 import org.matrix.android.sdk.api.session.permalinks.PermalinkParser
 import org.matrix.android.sdk.api.session.permalinks.PermalinkService
@ -34,80 +34,71 @@ import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.model.RoomType
 import org.matrix.android.sdk.api.util.Optional
 import org.matrix.android.sdk.api.util.toOptional
-import org.matrix.android.sdk.rx.rx
 import javax.inject.Inject

 class PermalinkHandler @Inject constructor(private val activeSessionHolder: ActiveSessionHolder,
                                           private val navigator: Navigator) {

-    fun launch(
+    suspend fun launch(
            context: Context,
            deepLink: String?,
            navigationInterceptor: NavigationInterceptor? = null,
            buildTask: Boolean = false
-    ): Single<Boolean> {
+    ): Boolean {
        val uri = deepLink?.let { Uri.parse(it) }
        return launch(context, uri, navigationInterceptor, buildTask)
    }

-    fun launch(
+    suspend fun launch(
            context: Context,
            deepLink: Uri?,
            navigationInterceptor: NavigationInterceptor? = null,
            buildTask: Boolean = false
-    ): Single<Boolean> {
+    ): Boolean {
        if (deepLink == null || !isPermalinkSupported(context, deepLink.toString())) {
-            return Single.just(false)
+            return false
        }
-        return Single
-                .fromCallable {
-                    PermalinkParser.parse(deepLink)
-                }
-                .subscribeOn(Schedulers.computation())
-                .observeOn(AndroidSchedulers.mainThread())
-                .flatMap { permalinkData ->
-                    handlePermalink(permalinkData, deepLink, context, navigationInterceptor, buildTask)
-                }
-                .onErrorReturnItem(false)
+        return tryOrNull {
+            withContext(Dispatchers.Default) {
+                val permalinkData = PermalinkParser.parse(deepLink)
+                handlePermalink(permalinkData, deepLink, context, navigationInterceptor, buildTask)
+            }
+        } ?: false
    }

-    private fun handlePermalink(
+    private suspend fun handlePermalink(
            permalinkData: PermalinkData,
            rawLink: Uri,
            context: Context,
            navigationInterceptor: NavigationInterceptor?,
            buildTask: Boolean
-    ): Single<Boolean> {
+    ): Boolean {
        return when (permalinkData) {
            is PermalinkData.RoomLink            -> {
-                permalinkData.getRoomId()
-                        .observeOn(AndroidSchedulers.mainThread())
-                        .map {
-                            val roomId = it.getOrNull()
-                            if (navigationInterceptor?.navToRoom(roomId, permalinkData.eventId, rawLink) != true) {
-                                openRoom(
-                                        context = context,
-                                        roomId = roomId,
-                                        permalinkData = permalinkData,
-                                        rawLink = rawLink,
-                                        buildTask = buildTask
-                                )
-                            }
-                            true
-                        }
+                val roomId = permalinkData.getRoomId()
+                if (navigationInterceptor?.navToRoom(roomId, permalinkData.eventId, rawLink) != true) {
+                    openRoom(
+                            context = context,
+                            roomId = roomId,
+                            permalinkData = permalinkData,
+                            rawLink = rawLink,
+                            buildTask = buildTask
+                    )
+                }
+                true
            }
            is PermalinkData.GroupLink           -> {
                navigator.openGroupDetail(permalinkData.groupId, context, buildTask)
-                Single.just(true)
+                true
            }
            is PermalinkData.UserLink            -> {
                if (navigationInterceptor?.navToMemberProfile(permalinkData.userId, rawLink) != true) {
                    navigator.openRoomMemberProfile(userId = permalinkData.userId, roomId = null, context = context, buildTask = buildTask)
                }
-                Single.just(true)
+                true
            }
            is PermalinkData.FallbackLink        -> {
-                Single.just(false)
+                false
            }
            is PermalinkData.RoomEmailInviteLink -> {
                val data = RoomPreviewData(
@ -118,7 +109,7 @@ class PermalinkHandler @Inject constructor(private val activeSessionHolder: Acti
                        roomType = permalinkData.roomType
                )
                navigator.openRoomPreview(context, data)
-                Single.just(true)
+                true
            }
        }
    }
@ -130,15 +121,13 @@ class PermalinkHandler @Inject constructor(private val activeSessionHolder: Acti
        }
    }

-    private fun PermalinkData.RoomLink.getRoomId(): Single<Optional<String>> {
+    private suspend fun PermalinkData.RoomLink.getRoomId(): String? {
        val session = activeSessionHolder.getSafeActiveSession()
        return if (isRoomAlias && session != null) {
-            session.rx()
-                    .getRoomIdByAlias(roomIdOrAlias, true)
-                    .map { it.getOrNull()?.roomId.toOptional() }
-                    .subscribeOn(Schedulers.io())
+            val roomIdByAlias = session.getRoomIdByAlias(roomIdOrAlias, true)
+            roomIdByAlias.getOrNull()?.roomId
        } else {
-            Single.just(Optional.from(roomIdOrAlias))
+            roomIdOrAlias
        }
    }

--- a/vector/src/main/java/im/vector/app/features/room/RequireActiveMembershipViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/room/RequireActiveMembershipViewModel.kt
@ -20,16 +20,26 @@ import com.airbnb.mvrx.ActivityViewModelContext
 import com.airbnb.mvrx.FragmentViewModelContext
 import com.airbnb.mvrx.MavericksViewModelFactory
 import com.airbnb.mvrx.ViewModelContext
-import com.jakewharton.rxrelay2.BehaviorRelay
 import dagger.assisted.Assisted
-import dagger.assisted.AssistedInject
 import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
 import im.vector.app.R
 import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.core.resources.StringProvider
 import io.reactivex.Observable
-import io.reactivex.schedulers.Schedulers
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asFlow
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.flow.subscribe
+import kotlinx.coroutines.flow.switchMap
 import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.events.model.EventType
@ -37,8 +47,8 @@ import org.matrix.android.sdk.api.session.room.Room
 import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.model.RoomSummary
 import org.matrix.android.sdk.api.util.Optional
-import org.matrix.android.sdk.rx.rx
-import org.matrix.android.sdk.rx.unwrap
+import org.matrix.android.sdk.flow.flow
+import org.matrix.android.sdk.flow.unwrap

 /**
 * This ViewModel observe a room summary and notify when the room is left
@ -66,28 +76,31 @@ class RequireActiveMembershipViewModel @AssistedInject constructor(
        }
    }

-    private val roomIdObservable = BehaviorRelay.createDefault(Optional.from(initialState.roomId))
+    private val roomIdFlow = MutableStateFlow(Optional.from(initialState.roomId))

    init {
        observeRoomSummary()
    }

    private fun observeRoomSummary() {
-        roomIdObservable
+        roomIdFlow
                .unwrap()
-                .switchMap { roomId ->
-                    val room = session.getRoom(roomId) ?: return@switchMap Observable.just(Optional.empty<RequireActiveMembershipViewEvents.RoomLeft>())
-                    room.rx()
+                .flatMapLatest { roomId ->
+                    val room = session.getRoom(roomId) ?: return@flatMapLatest flow{
+                        val emptyResult = Optional.empty<RequireActiveMembershipViewEvents.RoomLeft>()
+                        emit(emptyResult)
+                    }
+                    room.flow()
                            .liveRoomSummary()
                            .unwrap()
-                            .observeOn(Schedulers.computation())
+                            .flowOn(Dispatchers.Default)
                            .map { mapToLeftViewEvent(room, it) }
                }
                .unwrap()
-                .subscribe { event ->
+                .onEach { event ->
                    _viewEvents.post(event)
                }
-                .disposeOnClear()
+                .launchIn(viewModelScope)
    }

    private fun mapToLeftViewEvent(room: Room, roomSummary: RoomSummary): Optional<RequireActiveMembershipViewEvents.RoomLeft> {
@ -128,7 +141,7 @@ class RequireActiveMembershipViewModel @AssistedInject constructor(
                setState {
                    copy(roomId = action.roomId)
                }
-                roomIdObservable.accept(Optional.from(action.roomId))
+                roomIdFlow.tryEmit(Optional.from(action.roomId))
            }
        }.exhaustive
    }
--- a/vector/src/main/java/im/vector/app/features/roomdirectory/PublicRoomsFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/roomdirectory/PublicRoomsFragment.kt
@ -22,6 +22,7 @@ import android.view.LayoutInflater
 import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
+import androidx.lifecycle.lifecycleScope
 import com.airbnb.mvrx.activityViewModel
 import com.airbnb.mvrx.withState
 import com.jakewharton.rxbinding3.appcompat.queryTextChanges
@ -37,6 +38,7 @@ import im.vector.app.databinding.FragmentPublicRoomsBinding
 import im.vector.app.features.permalink.NavigationInterceptor
 import im.vector.app.features.permalink.PermalinkHandler
 import io.reactivex.rxkotlin.subscribeBy
+import kotlinx.coroutines.launch

 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.room.model.roomdirectory.PublicRoom
@ -125,20 +127,20 @@ class PublicRoomsFragment @Inject constructor(
    }

    override fun onUnknownRoomClicked(roomIdOrAlias: String) {
-        val permalink = session.permalinkService().createPermalink(roomIdOrAlias)
-        permalinkHandler
-                .launch(requireContext(), permalink, object : NavigationInterceptor {
-                    override fun navToRoom(roomId: String?, eventId: String?, deepLink: Uri?): Boolean {
-                        requireActivity().finish()
-                        return false
-                    }
-                })
-                .subscribe { isSuccessful ->
-                    if (!isSuccessful) {
-                        requireContext().toast(R.string.room_error_not_found)
-                    }
-                }
-                .disposeOnDestroyView()
+        viewLifecycleOwner.lifecycleScope.launch {
+            val permalink = session.permalinkService().createPermalink(roomIdOrAlias)
+            val isHandled = permalinkHandler
+                    .launch(requireContext(), permalink, object : NavigationInterceptor {
+                        override fun navToRoom(roomId: String?, eventId: String?, deepLink: Uri?): Boolean {
+                            requireActivity().finish()
+                            return false
+                        }
+                    })
+
+            if (!isHandled) {
+                requireContext().toast(R.string.room_error_not_found)
+            }
+        }
    }

    override fun onPublicRoomClicked(publicRoom: PublicRoom, joinState: JoinState) {
--- a/vector/src/main/java/im/vector/app/features/roomdirectory/RoomDirectoryViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/roomdirectory/RoomDirectoryViewModel.kt
@ -16,7 +16,6 @@

 package im.vector.app.features.roomdirectory

-import androidx.lifecycle.viewModelScope
 import com.airbnb.mvrx.ActivityViewModelContext
 import com.airbnb.mvrx.Fail
 import com.airbnb.mvrx.Loading
@ -31,6 +30,7 @@ import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.features.settings.VectorPreferences
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.extensions.orFalse
 import org.matrix.android.sdk.api.session.Session
@ -38,7 +38,7 @@ import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.model.roomdirectory.PublicRoomsFilter
 import org.matrix.android.sdk.api.session.room.model.roomdirectory.PublicRoomsParams
 import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
-import org.matrix.android.sdk.rx.rx
+import org.matrix.android.sdk.flow.flow
 import timber.log.Timber

 class RoomDirectoryViewModel @AssistedInject constructor(
@ -80,28 +80,24 @@ class RoomDirectoryViewModel @AssistedInject constructor(
            memberships = listOf(Membership.JOIN)
        }
        session
-                .rx()
+                .flow()
                .liveRoomSummaries(queryParams)
-                .subscribe { list ->
-                    val joinedRoomIds = list
-                            ?.map { it.roomId }
-                            ?.toSet()
-                            .orEmpty()
-
-                    setState {
-                        copy(joinedRoomsIds = joinedRoomIds)
-                    }
+                .map { roomSummaries ->
+                    roomSummaries
+                            .map { it.roomId }
+                            .toSet()
+                }
+                .setOnEach {
+                    copy(joinedRoomsIds = it)
                }
-                .disposeOnClear()
    }

    private fun observeMembershipChanges() {
-        session.rx()
+        session.flow()
                .liveRoomChangeMembershipState()
-                .subscribe {
-                    setState { copy(changeMembershipStates = it) }
+                .setOnEach {
+                    copy(changeMembershipStates = it)
                }
-                .disposeOnClear()
    }

    override fun handle(action: RoomDirectoryAction) {
--- a/vector/src/main/java/im/vector/app/features/roomdirectory/roompreview/RoomPreviewViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/roomdirectory/roompreview/RoomPreviewViewModel.kt
@ -30,6 +30,8 @@ import im.vector.app.core.platform.EmptyViewEvents
 import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.features.roomdirectory.JoinState
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.query.QueryStringValue
@ -40,6 +42,7 @@ import org.matrix.android.sdk.api.session.room.members.ChangeMembershipState
 import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.peeking.PeekResult
 import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
+import org.matrix.android.sdk.flow.flow
 import org.matrix.android.sdk.rx.rx
 import timber.log.Timber

@ -165,9 +168,9 @@ class RoomPreviewViewModel @AssistedInject constructor(@Assisted private val ini
            excludeType = null
        }
        session
-                .rx()
+                .flow()
                .liveRoomSummaries(queryParams)
-                .subscribe { list ->
+                .onEach { list ->
                    val isRoomJoined = list.any {
                        it.membership == Membership.JOIN
                    }
@ -180,13 +183,13 @@ class RoomPreviewViewModel @AssistedInject constructor(@Assisted private val ini
                        setState { copy(roomJoinState = JoinState.JOINED) }
                    }
                }
-                .disposeOnClear()
+                .launchIn(viewModelScope)
    }

    private fun observeMembershipChanges() {
-        session.rx()
+        session.flow()
                .liveRoomChangeMembershipState()
-                .subscribe {
+                .onEach {
                    val changeMembership = it[initialState.roomId] ?: ChangeMembershipState.Unknown
                    val joinState = when (changeMembership) {
                        is ChangeMembershipState.Joining       -> JoinState.JOINING
@ -198,7 +201,7 @@ class RoomPreviewViewModel @AssistedInject constructor(@Assisted private val ini
                        setState { copy(roomJoinState = joinState) }
                    }
                }
-                .disposeOnClear()
+                .launchIn(viewModelScope)
    }

    override fun handle(action: RoomPreviewAction) {
--- a/vector/src/main/java/im/vector/app/features/roomprofile/RoomProfileViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/roomprofile/RoomProfileViewModel.kt
@ -40,10 +40,10 @@ import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.model.create.RoomCreateContent
 import org.matrix.android.sdk.api.session.room.powerlevels.PowerLevelsHelper
 import org.matrix.android.sdk.api.session.room.state.isPublic
-import org.matrix.android.sdk.rx.RxRoom
-import org.matrix.android.sdk.rx.mapOptional
-import org.matrix.android.sdk.rx.rx
-import org.matrix.android.sdk.rx.unwrap
+import org.matrix.android.sdk.flow.FlowRoom
+import org.matrix.android.sdk.flow.flow
+import org.matrix.android.sdk.flow.mapOptional
+import org.matrix.android.sdk.flow.unwrap

 class RoomProfileViewModel @AssistedInject constructor(
        @Assisted private val initialState: RoomProfileViewState,
@ -69,15 +69,15 @@ class RoomProfileViewModel @AssistedInject constructor(
    private val room = session.getRoom(initialState.roomId)!!

    init {
-        val rxRoom = room.rx()
-        observeRoomSummary(rxRoom)
-        observeRoomCreateContent(rxRoom)
-        observeBannedRoomMembers(rxRoom)
+        val flowRoom = room.flow()
+        observeRoomSummary(flowRoom)
+        observeRoomCreateContent(flowRoom)
+        observeBannedRoomMembers(flowRoom)
        observePermissions()
    }

-    private fun observeRoomCreateContent(rxRoom: RxRoom) {
-        rxRoom.liveStateEvent(EventType.STATE_ROOM_CREATE, QueryStringValue.NoCondition)
+    private fun observeRoomCreateContent(flowRoom: FlowRoom) {
+        flowRoom.liveStateEvent(EventType.STATE_ROOM_CREATE, QueryStringValue.NoCondition)
                .mapOptional { it.content.toModel<RoomCreateContent>() }
                .unwrap()
                .execute { async ->
@ -92,16 +92,16 @@ class RoomProfileViewModel @AssistedInject constructor(
                }
    }

-    private fun observeRoomSummary(rxRoom: RxRoom) {
-        rxRoom.liveRoomSummary()
+    private fun observeRoomSummary(flowRoom: FlowRoom) {
+        flowRoom.liveRoomSummary()
                .unwrap()
                .execute {
                    copy(roomSummary = it)
                }
    }

-    private fun observeBannedRoomMembers(rxRoom: RxRoom) {
-        rxRoom.liveRoomMembers(roomMemberQueryParams { memberships = listOf(Membership.BAN) })
+    private fun observeBannedRoomMembers(flowRoom: FlowRoom) {
+        flowRoom.liveRoomMembers(roomMemberQueryParams { memberships = listOf(Membership.BAN) })
                .execute {
                    copy(bannedMembership = it)
                }
--- a/vector/src/main/java/im/vector/app/features/roomprofile/settings/RoomSettingsViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/roomprofile/settings/RoomSettingsViewModel.kt
@ -28,11 +28,10 @@ import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.features.powerlevel.PowerLevelsFlowFactory
 import im.vector.app.features.settings.VectorPreferences
-import io.reactivex.Completable
-import io.reactivex.Observable
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.mapNotNull
 import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.Session
@ -47,7 +46,6 @@ import org.matrix.android.sdk.api.session.room.powerlevels.PowerLevelsHelper
 import org.matrix.android.sdk.flow.flow
 import org.matrix.android.sdk.flow.mapOptional
 import org.matrix.android.sdk.flow.unwrap
-import org.matrix.android.sdk.rx.rx

 class RoomSettingsViewModel @AssistedInject constructor(@Assisted initialState: RoomSettingsViewState,
                                                        private val vectorPreferences: VectorPreferences,
@ -259,61 +257,57 @@ class RoomSettingsViewModel @AssistedInject constructor(@Assisted initialState:
    }

    private fun saveSettings() = withState { state ->
-        postLoading(true)
-
-        val operationList = mutableListOf<Completable>()
+        val operationList = mutableListOf<suspend () -> Unit>()

        val summary = state.roomSummary.invoke()

        when (val avatarAction = state.avatarAction) {
            RoomSettingsViewState.AvatarAction.None            -> Unit
            RoomSettingsViewState.AvatarAction.DeleteAvatar    -> {
-                operationList.add(room.rx().deleteAvatar())
+                operationList.add { room.deleteAvatar() }
            }
            is RoomSettingsViewState.AvatarAction.UpdateAvatar -> {
-                operationList.add(room.rx().updateAvatar(avatarAction.newAvatarUri, avatarAction.newAvatarFileName))
+                operationList.add { room.updateAvatar(avatarAction.newAvatarUri, avatarAction.newAvatarFileName) }
            }
        }
        if (summary?.name != state.newName) {
-            operationList.add(room.rx().updateName(state.newName ?: ""))
+            operationList.add { room.updateName(state.newName ?: "") }
        }
        if (summary?.topic != state.newTopic) {
-            operationList.add(room.rx().updateTopic(state.newTopic ?: ""))
+            operationList.add { room.updateTopic(state.newTopic ?: "") }
        }

        if (state.newHistoryVisibility != null) {
-            operationList.add(room.rx().updateHistoryReadability(state.newHistoryVisibility))
+            operationList.add { room.updateHistoryReadability(state.newHistoryVisibility) }
        }

        if (state.newRoomJoinRules.hasChanged()) {
-            operationList.add(room.rx().updateJoinRule(state.newRoomJoinRules.newJoinRules, state.newRoomJoinRules.newGuestAccess))
+            operationList.add { room.updateJoinRule(state.newRoomJoinRules.newJoinRules, state.newRoomJoinRules.newGuestAccess) }
+        }
+        viewModelScope.launch {
+            updateLoadingState(isLoading = true)
+            try {
+                for (operation in operationList) {
+                    operation.invoke()
+                }
+                setState {
+                    deletePendingAvatar(this)
+                    copy(
+                            avatarAction = RoomSettingsViewState.AvatarAction.None,
+                            newHistoryVisibility = null,
+                            newRoomJoinRules = RoomSettingsViewState.NewJoinRule()
+                    )
+                }
+                _viewEvents.post(RoomSettingsViewEvents.Success)
+            } catch (failure: Throwable) {
+                _viewEvents.post(RoomSettingsViewEvents.Failure(failure))
+            }finally {
+                updateLoadingState(isLoading = false)
+            }
        }
-
-        Observable
-                .fromIterable(operationList)
-                .concatMapCompletable { it }
-                .subscribe(
-                        {
-                            postLoading(false)
-                            setState {
-                                deletePendingAvatar(this)
-                                copy(
-                                        avatarAction = RoomSettingsViewState.AvatarAction.None,
-                                        newHistoryVisibility = null,
-                                        newRoomJoinRules = RoomSettingsViewState.NewJoinRule()
-                                )
-                            }
-                            _viewEvents.post(RoomSettingsViewEvents.Success)
-                        },
-                        {
-                            postLoading(false)
-                            _viewEvents.post(RoomSettingsViewEvents.Failure(it))
-                        }
-                )
-                .disposeOnClear()
    }

-    private fun postLoading(isLoading: Boolean) {
+    private fun updateLoadingState(isLoading: Boolean) {
        setState {
            copy(isLoading = isLoading)
        }
--- a/vector/src/main/java/im/vector/app/features/settings/SecretsSynchronisationInfo.kt
+++ b/vector/src/main/java/im/vector/app/features/settings/SecretsSynchronisationInfo.kt
@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2021 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.settings
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.distinctUntilChanged
+import org.matrix.android.sdk.api.extensions.orFalse
+import org.matrix.android.sdk.api.session.Session
+import org.matrix.android.sdk.api.session.crypto.crosssigning.KEYBACKUP_SECRET_SSSS_NAME
+import org.matrix.android.sdk.api.session.crypto.crosssigning.MASTER_KEY_SSSS_NAME
+import org.matrix.android.sdk.api.session.crypto.crosssigning.SELF_SIGNING_KEY_SSSS_NAME
+import org.matrix.android.sdk.api.session.crypto.crosssigning.USER_SIGNING_KEY_SSSS_NAME
+import org.matrix.android.sdk.flow.flow
+import org.matrix.android.sdk.rx.SecretsSynchronisationInfo
+
+data class SecretsSynchronisationInfo(
+        val isBackupSetup: Boolean,
+        val isCrossSigningEnabled: Boolean,
+        val isCrossSigningTrusted: Boolean,
+        val allPrivateKeysKnown: Boolean,
+        val megolmBackupAvailable: Boolean,
+        val megolmSecretKnown: Boolean,
+        val isMegolmKeyIn4S: Boolean
+)
+
+fun Session.liveSecretSynchronisationInfo(): Flow<SecretsSynchronisationInfo> {
+    val sessionFlow = flow()
+    return combine(
+            sessionFlow.liveUserAccountData(setOf(MASTER_KEY_SSSS_NAME, USER_SIGNING_KEY_SSSS_NAME, SELF_SIGNING_KEY_SSSS_NAME, KEYBACKUP_SECRET_SSSS_NAME)),
+            sessionFlow.liveCrossSigningInfo(myUserId),
+            sessionFlow.liveCrossSigningPrivateKeys()
+    ) { _, crossSigningInfo, pInfo ->
+        // first check if 4S is already setup
+        val is4SSetup = sharedSecretStorageService.isRecoverySetup()
+        val isCrossSigningEnabled = crossSigningInfo.getOrNull() != null
+        val isCrossSigningTrusted = crossSigningInfo.getOrNull()?.isTrusted() == true
+        val allPrivateKeysKnown = pInfo.getOrNull()?.allKnown().orFalse()
+
+        val keysBackupService = cryptoService().keysBackupService()
+        val currentBackupVersion = keysBackupService.currentBackupVersion
+        val megolmBackupAvailable = currentBackupVersion != null
+        val savedBackupKey = keysBackupService.getKeyBackupRecoveryKeyInfo()
+
+        val megolmKeyKnown = savedBackupKey?.version == currentBackupVersion
+        SecretsSynchronisationInfo(
+                isBackupSetup = is4SSetup,
+                isCrossSigningEnabled = isCrossSigningEnabled,
+                isCrossSigningTrusted = isCrossSigningTrusted,
+                allPrivateKeysKnown = allPrivateKeysKnown,
+                megolmBackupAvailable = megolmBackupAvailable,
+                megolmSecretKnown = megolmKeyKnown,
+                isMegolmKeyIn4S = sharedSecretStorageService.isMegolmKeyInBackup()
+        )
+    }
+            .distinctUntilChanged()
+}
--- a/vector/src/main/java/im/vector/app/features/settings/VectorSettingsSecurityPrivacyFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/settings/VectorSettingsSecurityPrivacyFragment.kt
@ -60,6 +60,10 @@ import im.vector.app.features.raw.wellknown.isE2EByDefault
 import im.vector.app.features.themes.ThemeUtils
 import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.disposables.Disposable
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import me.gujun.android.span.span
 import org.matrix.android.sdk.api.MatrixCallback
@ -144,14 +148,12 @@ class VectorSettingsSecurityPrivacyFragment @Inject constructor(
        // My device name may have been updated
        refreshMyDevice()
        refreshXSigningStatus()
-        session.rx().liveSecretSynchronisationInfo()
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe {
+        session.liveSecretSynchronisationInfo()
+                .flowOn(Dispatchers.Main)
+                .onEach {
                    refresh4SSection(it)
                    refreshXSigningStatus()
-                }.also {
-                    disposables.add(it)
-                }
+                }.launchIn(viewLifecycleOwner.lifecycleScope)

        lifecycleScope.launchWhenResumed {
            findPreference<VectorPreference>(VectorPreferences.SETTINGS_CRYPTOGRAPHY_HS_ADMIN_DISABLED_E2E_DEFAULT)?.isVisible =
--- a/vector/src/main/java/im/vector/app/features/settings/ignored/IgnoredUsersViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/settings/ignored/IgnoredUsersViewModel.kt
@ -16,7 +16,6 @@

 package im.vector.app.features.settings.ignored

-import androidx.lifecycle.viewModelScope
 import com.airbnb.mvrx.Async
 import com.airbnb.mvrx.Fail
 import com.airbnb.mvrx.FragmentViewModelContext
@ -27,14 +26,14 @@ import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.Uninitialized
 import com.airbnb.mvrx.ViewModelContext
 import dagger.assisted.Assisted
-import dagger.assisted.AssistedInject
 import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
 import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.core.platform.VectorViewModelAction
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.user.model.User
-import org.matrix.android.sdk.rx.rx
+import org.matrix.android.sdk.flow.flow

 data class IgnoredUsersViewState(
        val ignoredUsers: List<User> = emptyList(),
@ -68,7 +67,7 @@ class IgnoredUsersViewModel @AssistedInject constructor(@Assisted initialState:
    }

    private fun observeIgnoredUsers() {
-        session.rx()
+        session.flow()
                .liveIgnoredUsers()
                .execute { async ->
                    copy(
--- a/vector/src/main/java/im/vector/app/features/share/IncomingShareViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/share/IncomingShareViewModel.kt
@ -19,24 +19,25 @@ package im.vector.app.features.share
 import com.airbnb.mvrx.FragmentViewModelContext
 import com.airbnb.mvrx.MavericksViewModelFactory
 import com.airbnb.mvrx.ViewModelContext
-import com.jakewharton.rxrelay2.BehaviorRelay
 import dagger.assisted.Assisted
-import dagger.assisted.AssistedInject
 import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
 import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.extensions.toggle
 import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.features.attachments.isPreviewable
 import im.vector.app.features.attachments.toGroupedContentAttachmentData
 import im.vector.app.features.home.room.list.BreadcrumbsRoomComparator
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.sample
 import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.content.ContentAttachmentData
 import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
 import org.matrix.android.sdk.flow.flow
-import org.matrix.android.sdk.rx.rx
-import java.util.concurrent.TimeUnit

 class IncomingShareViewModel @AssistedInject constructor(
        @Assisted initialState: IncomingShareViewState,
@ -58,7 +59,7 @@ class IncomingShareViewModel @AssistedInject constructor(
        }
    }

-    private val filterStream: BehaviorRelay<String> = BehaviorRelay.createDefault("")
+    private val filterStream = MutableStateFlow("")

    init {
        observeRoomSummaries()
@ -75,7 +76,7 @@ class IncomingShareViewModel @AssistedInject constructor(
                }

        filterStream
-                .switchMap { filter ->
+                .flatMapLatest { filter ->
                    val displayNameQuery = if (filter.isEmpty()) {
                        QueryStringValue.NoCondition
                    } else {
@ -85,9 +86,9 @@ class IncomingShareViewModel @AssistedInject constructor(
                        displayName = displayNameQuery
                        memberships = listOf(Membership.JOIN)
                    }
-                    session.rx().liveRoomSummaries(filterQueryParams)
+                    session.flow().liveRoomSummaries(filterQueryParams)
                }
-                .throttleLast(300, TimeUnit.MILLISECONDS)
+                .sample(300)
                .map { it.sortedWith(breadcrumbsRoomComparator) }
                .execute {
                    copy(filteredRoomSummaries = it)
@ -110,7 +111,7 @@ class IncomingShareViewModel @AssistedInject constructor(
    }

    private fun handleFilter(action: IncomingShareAction.FilterWith) {
-        filterStream.accept(action.filter)
+        filterStream.tryEmit(action.filter)
    }

    private fun handleShareToSelectedRooms() = withState { state ->
--- a/vector/src/main/java/im/vector/app/features/spaces/SpacesListViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/spaces/SpacesListViewModel.kt
@ -16,7 +16,7 @@

 package im.vector.app.features.spaces

-import androidx.lifecycle.viewModelScope
+import androidx.lifecycle.asFlow
 import com.airbnb.mvrx.FragmentViewModelContext
 import com.airbnb.mvrx.Loading
 import com.airbnb.mvrx.MavericksViewModelFactory
@ -33,8 +33,9 @@ import im.vector.app.features.session.coroutineScope
 import im.vector.app.features.settings.VectorPreferences
 import im.vector.app.group
 import im.vector.app.space
-import io.reactivex.Observable
 import io.reactivex.schedulers.Schedulers
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.query.ActiveSpaceFilter
@ -44,19 +45,16 @@ import org.matrix.android.sdk.api.session.events.model.toContent
 import org.matrix.android.sdk.api.session.events.model.toModel
 import org.matrix.android.sdk.api.session.group.groupSummaryQueryParams
 import org.matrix.android.sdk.api.session.room.RoomSortOrder
-import org.matrix.android.sdk.api.session.room.accountdata.RoomAccountDataEvent
 import org.matrix.android.sdk.api.session.room.accountdata.RoomAccountDataTypes
 import org.matrix.android.sdk.api.session.room.model.Membership
-import org.matrix.android.sdk.api.session.room.model.RoomSummary
 import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
 import org.matrix.android.sdk.api.session.room.summary.RoomAggregateNotificationCount
 import org.matrix.android.sdk.api.session.space.SpaceOrderUtils
 import org.matrix.android.sdk.api.session.space.model.SpaceOrderContent
 import org.matrix.android.sdk.api.session.space.model.TopLevelSpaceComparator
-import org.matrix.android.sdk.api.session.user.model.User
 import org.matrix.android.sdk.api.util.toMatrixItem
+import org.matrix.android.sdk.flow.flow
 import org.matrix.android.sdk.rx.asObservable
-import org.matrix.android.sdk.rx.rx
 import java.util.concurrent.TimeUnit

 class SpacesListViewModel @AssistedInject constructor(@Assisted initialState: SpaceListViewState,
@ -286,21 +284,23 @@ class SpacesListViewModel @AssistedInject constructor(@Assisted initialState: Sp
                    null)
        }

-        val rxSession = session.rx()
+        val flowSession = session.flow()

-        Observable.combineLatest<User?, List<RoomSummary>, List<RoomAccountDataEvent>, List<RoomSummary>>(
-                rxSession
+        combine(
+                flowSession
                        .liveUser(session.myUserId)
                        .map {
                            it.getOrNull()
                        },
-                rxSession
+                flowSession
                        .liveSpaceSummaries(spaceSummaryQueryParams),
-                session.accountDataService().getLiveRoomAccountDataEvents(setOf(RoomAccountDataTypes.EVENT_TYPE_SPACE_ORDER)).asObservable(),
-                { _, communityGroups, _ ->
-                    communityGroups
-                }
-        )
+                session
+                        .accountDataService()
+                        .getLiveRoomAccountDataEvents(setOf(RoomAccountDataTypes.EVENT_TYPE_SPACE_ORDER))
+                        .asFlow()
+        ) { _, communityGroups, _ ->
+            communityGroups
+        }
                .execute { async ->
                    val rootSpaces = session.spaceService().getRootSpaceSummaries()
                    val orders = rootSpaces.map {
--- a/vector/src/main/java/im/vector/app/features/spaces/explore/SpaceDirectoryFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/spaces/explore/SpaceDirectoryFragment.kt
@ -25,6 +25,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.core.text.toSpannable
 import androidx.core.view.isVisible
+import androidx.lifecycle.lifecycleScope
 import com.airbnb.epoxy.EpoxyVisibilityTracker
 import com.airbnb.mvrx.activityViewModel
 import com.airbnb.mvrx.withState
@ -46,8 +47,7 @@ import im.vector.app.features.permalink.PermalinkHandler
 import im.vector.app.features.spaces.manage.ManageType
 import im.vector.app.features.spaces.manage.SpaceAddRoomSpaceChooserBottomSheet
 import im.vector.app.features.spaces.manage.SpaceManageActivity
-import io.reactivex.android.schedulers.AndroidSchedulers
-import io.reactivex.schedulers.Schedulers
+import kotlinx.coroutines.launch
 import kotlinx.parcelize.Parcelize
 import org.matrix.android.sdk.api.session.room.model.SpaceChildInfo
 import java.net.URL
@ -200,33 +200,29 @@ class SpaceDirectoryFragment @Inject constructor(
    }

    override fun onUrlClicked(url: String, title: String): Boolean {
-        permalinkHandler
-                .launch(requireActivity(), url, null)
-                .subscribeOn(Schedulers.io())
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe { managed ->
-                    if (!managed) {
-                        if (title.isValidUrl() && url.isValidUrl() && URL(title).host != URL(url).host) {
-                            MaterialAlertDialogBuilder(requireActivity(), R.style.ThemeOverlay_Vector_MaterialAlertDialog_Destructive)
-                                    .setTitle(R.string.external_link_confirmation_title)
-                                    .setMessage(
-                                            getString(R.string.external_link_confirmation_message, title, url)
-                                                    .toSpannable()
-                                                    .colorizeMatchingText(url, colorProvider.getColorFromAttribute(R.attr.vctr_content_tertiary))
-                                                    .colorizeMatchingText(title, colorProvider.getColorFromAttribute(R.attr.vctr_content_tertiary))
-                                    )
-                                    .setPositiveButton(R.string._continue) { _, _ ->
-                                        openUrlInExternalBrowser(requireContext(), url)
-                                    }
-                                    .setNegativeButton(R.string.cancel, null)
-                                    .show()
-                        } else {
-                            // Open in external browser, in a new Tab
-                            openUrlInExternalBrowser(requireContext(), url)
-                        }
-                    }
+        viewLifecycleOwner.lifecycleScope.launch {
+            val isHandled = permalinkHandler.launch(requireActivity(), url, null)
+            if (!isHandled) {
+                if (title.isValidUrl() && url.isValidUrl() && URL(title).host != URL(url).host) {
+                    MaterialAlertDialogBuilder(requireActivity(), R.style.ThemeOverlay_Vector_MaterialAlertDialog_Destructive)
+                            .setTitle(R.string.external_link_confirmation_title)
+                            .setMessage(
+                                    getString(R.string.external_link_confirmation_message, title, url)
+                                            .toSpannable()
+                                            .colorizeMatchingText(url, colorProvider.getColorFromAttribute(R.attr.vctr_content_tertiary))
+                                            .colorizeMatchingText(title, colorProvider.getColorFromAttribute(R.attr.vctr_content_tertiary))
+                            )
+                            .setPositiveButton(R.string._continue) { _, _ ->
+                                openUrlInExternalBrowser(requireContext(), url)
+                            }
+                            .setNegativeButton(R.string.cancel, null)
+                            .show()
+                } else {
+                    // Open in external browser, in a new Tab
+                    openUrlInExternalBrowser(requireContext(), url)
                }
-                .disposeOnDestroyView()
+            }
+        }
        // In fact it is always managed
        return true
    }
--- a/vector/src/main/java/im/vector/app/features/spaces/explore/SpaceDirectoryViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/spaces/explore/SpaceDirectoryViewModel.kt
@ -31,6 +31,7 @@ import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.features.powerlevel.PowerLevelsFlowFactory
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.session.Session
@ -42,7 +43,7 @@ import org.matrix.android.sdk.api.session.room.model.RoomType
 import org.matrix.android.sdk.api.session.room.model.SpaceChildInfo
 import org.matrix.android.sdk.api.session.room.powerlevels.PowerLevelsHelper
 import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
-import org.matrix.android.sdk.rx.rx
+import org.matrix.android.sdk.flow.flow
 import timber.log.Timber

 class SpaceDirectoryViewModel @AssistedInject constructor(
@ -147,7 +148,7 @@ class SpaceDirectoryViewModel @AssistedInject constructor(
            excludeType = null
        }
        session
-                .rx()
+                .flow()
                .liveRoomSummaries(queryParams)
                .map {
                    it.map { it.roomId }.toSet()
@ -158,12 +159,11 @@ class SpaceDirectoryViewModel @AssistedInject constructor(
    }

    private fun observeMembershipChanges() {
-        session.rx()
+        session.flow()
                .liveRoomChangeMembershipState()
-                .subscribe {
-                    setState { copy(changeMembershipStates = it) }
+                .setOnEach {
+                    copy(changeMembershipStates = it)
                }
-                .disposeOnClear()
    }

    override fun handle(action: SpaceDirectoryViewAction) {
--- a/vector/src/main/java/im/vector/app/features/userdirectory/UserListViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/userdirectory/UserListViewModel.kt
@ -160,16 +160,15 @@ class UserListViewModel @AssistedInject constructor(@Assisted initialState: User
    }

    private fun observeUsers() = withState { state ->
-
        identityServerUsersSearch
                .filter { it.isEmail() }
                .throttleLast(300, TimeUnit.MILLISECONDS)
                .switchMapSingle { search ->
-                    val rx = session.rx()
+                    val flowSession = session.rx()
                    val stream =
-                            rx.lookupThreePid(ThreePid.Email(search)).flatMap {
+                            flowSession.lookupThreePid(ThreePid.Email(search)).flatMap {
                                it.getOrNull()?.let { foundThreePid ->
-                                    rx.getProfileInfo(foundThreePid.matrixId)
+                                    flowSession.getProfileInfo(foundThreePid.matrixId)
                                            .map { json ->
                                                ThreePidUser(
                                                        email = search,
--- a/vector/src/main/java/im/vector/app/features/widgets/WidgetViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/widgets/WidgetViewModel.kt
@ -30,6 +30,7 @@ import dagger.assisted.AssistedInject
 import im.vector.app.core.platform.VectorViewModel
 import im.vector.app.core.resources.StringProvider
 import im.vector.app.features.widgets.permissions.WidgetPermissionsHelper
+import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.query.QueryStringValue
@ -44,7 +45,6 @@ import org.matrix.android.sdk.api.session.widgets.WidgetManagementFailure
 import org.matrix.android.sdk.flow.flow
 import org.matrix.android.sdk.flow.mapOptional
 import org.matrix.android.sdk.flow.unwrap
-import org.matrix.android.sdk.rx.rx
 import timber.log.Timber
 import javax.net.ssl.HttpsURLConnection

@ -135,7 +135,7 @@ class WidgetViewModel @AssistedInject constructor(@Assisted val initialState: Wi
            return
        }
        val widgetId = initialState.widgetId ?: return
-        session.rx()
+        session.flow()
                .liveRoomWidgets(initialState.roomId, QueryStringValue.Equals(widgetId))
                .filter { it.isNotEmpty() }
                .map { it.first() }
--- a/vector/src/main/java/im/vector/app/features/widgets/permissions/RoomWidgetPermissionViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/widgets/permissions/RoomWidgetPermissionViewModel.kt
@ -15,23 +15,24 @@
 */
 package im.vector.app.features.widgets.permissions

-import androidx.lifecycle.viewModelScope
 import com.airbnb.mvrx.ActivityViewModelContext
 import com.airbnb.mvrx.FragmentViewModelContext
 import com.airbnb.mvrx.MavericksViewModelFactory
 import com.airbnb.mvrx.ViewModelContext
 import dagger.assisted.Assisted
-import dagger.assisted.AssistedInject
 import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
 import im.vector.app.R
 import im.vector.app.core.platform.VectorViewModel
+import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.extensions.orFalse
 import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.query.QueryStringValue
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.widgets.model.WidgetType
-import org.matrix.android.sdk.rx.rx
+import org.matrix.android.sdk.flow.flow
 import timber.log.Timber
 import java.net.URL

@ -48,7 +49,7 @@ class RoomWidgetPermissionViewModel @AssistedInject constructor(@Assisted val in

    private fun observeWidget() {
        val widgetId = initialState.widgetId ?: return
-        session.rx()
+        session.flow()
                .liveRoomWidgets(initialState.roomId, QueryStringValue.Equals(widgetId))
                .filter { it.isNotEmpty() }
                .map {