Crypto: fix a small issue

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/util/Try.kt

@@ -0,0 +1,30 @@
+/*
+ *
+ *  * Copyright 2019 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.matrix.android.api.util
+
+import arrow.core.*
+
+inline fun <A> TryOf<A>.onError(f: (Throwable) -> Unit): Try<A> = fix()
+        .fold(
+                {
+                    f(it)
+                    Failure(it)
+                },
+                { Success(it) }
+        )

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/DeviceListManager.kt

@@ -19,9 +19,9 @@ package im.vector.matrix.android.internal.crypto
 
 import android.text.TextUtils
 import arrow.core.Try
-import arrow.instances.`try`.applicativeError.handleError
 import im.vector.matrix.android.api.MatrixPatterns
 import im.vector.matrix.android.api.auth.data.Credentials
+import im.vector.matrix.android.api.util.onError
 import im.vector.matrix.android.internal.crypto.model.MXDeviceInfo
 import im.vector.matrix.android.internal.crypto.model.MXUsersDevicesMap
 import im.vector.matrix.android.internal.crypto.store.IMXCryptoStore
@@ -270,10 +270,10 @@ internal class DeviceListManager(private val cryptoStore: IMXCryptoStore,
             Timber.v("## downloadKeys() : starts")
             val t0 = System.currentTimeMillis()
             doKeyDownloadForUsers(downloadUsers)
-                    .flatMap {
+                    .map {
                         Timber.v("## downloadKeys() : doKeyDownloadForUsers succeeds after " + (System.currentTimeMillis() - t0) + " ms")
                         it.addEntriesFromMap(stored)
-                        Try.just(it)
+                        it
                     }
         }
     }
@@ -333,10 +333,9 @@ internal class DeviceListManager(private val cryptoStore: IMXCryptoStore,
                     }
                     onKeysDownloadSucceed(filteredUsers, response.failures)
                 }
-                .handleError {
+                .onError {
                     Timber.e(it, "##doKeyDownloadForUsers(): error")
                     onKeysDownloadFailed(filteredUsers)
-                    throw it
                 }
     }
 
@@ -411,7 +410,7 @@ internal class DeviceListManager(private val cryptoStore: IMXCryptoStore,
 
         if (!isVerified) {
             Timber.e("## validateDeviceKeys() : Unable to verify signature on device " + userId + ":"
-                     + deviceKeys.deviceId + " with error " + errorMessage)
+                    + deviceKeys.deviceId + " with error " + errorMessage)
             return false
         }
 
@@ -422,8 +421,8 @@ internal class DeviceListManager(private val cryptoStore: IMXCryptoStore,
                 //
                 // Should we warn the user about it somehow?
                 Timber.e("## validateDeviceKeys() : WARNING:Ed25519 key for device " + userId + ":"
-                         + deviceKeys.deviceId + " has changed : "
-                         + previouslyStoredDeviceKeys.fingerprint() + " -> " + signKey)
+                        + deviceKeys.deviceId + " has changed : "
+                        + previouslyStoredDeviceKeys.fingerprint() + " -> " + signKey)
 
                 Timber.e("## validateDeviceKeys() : $previouslyStoredDeviceKeys -> $deviceKeys")
                 Timber.e("## validateDeviceKeys() : " + previouslyStoredDeviceKeys.keys + " -> " + deviceKeys.keys)

vector/src/main/java/im/vector/riotredesign/features/crypto/keysbackup/restore/KeysBackupRestoreFromKeyFragment.kt

@@ -87,7 +87,7 @@ class KeysBackupRestoreFromKeyFragment : VectorBaseFragment() {
         if (value.isNullOrBlank()) {
             viewModel.recoveryCodeErrorText.value = context?.getString(R.string.keys_backup_recovery_code_empty_error_message)
         } else {
-            viewModel.recoverKeys(context!!, sharedViewModel)
+            viewModel.recoverKeys(requireContext(), sharedViewModel)
         }
     }