1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.thread; 18 19 import static android.net.thread.ThreadNetworkException.ERROR_INTERNAL_ERROR; 20 import static android.net.thread.ThreadNetworkException.ERROR_UNAVAILABLE; 21 22 import android.net.thread.ActiveOperationalDataset; 23 import android.net.thread.IActiveOperationalDatasetReceiver; 24 import android.net.thread.ThreadNetworkException; 25 import android.os.RemoteException; 26 27 import com.android.internal.annotations.GuardedBy; 28 29 import java.util.HashSet; 30 import java.util.Set; 31 32 /** 33 * A {@link IActiveOperationalDatasetReceiver} wrapper which makes it easier to invoke the 34 * callbacks. 35 */ 36 final class ActiveOperationalDatasetReceiverWrapper { 37 private final IActiveOperationalDatasetReceiver mReceiver; 38 39 private static final Object sPendingReceiversLock = new Object(); 40 41 @GuardedBy("sPendingReceiversLock") 42 private static final Set<ActiveOperationalDatasetReceiverWrapper> sPendingReceivers = 43 new HashSet<>(); 44 ActiveOperationalDatasetReceiverWrapper(IActiveOperationalDatasetReceiver receiver)45 public ActiveOperationalDatasetReceiverWrapper(IActiveOperationalDatasetReceiver receiver) { 46 this.mReceiver = receiver; 47 48 synchronized (sPendingReceiversLock) { 49 sPendingReceivers.add(this); 50 } 51 } 52 onOtDaemonDied()53 public static void onOtDaemonDied() { 54 synchronized (sPendingReceiversLock) { 55 for (ActiveOperationalDatasetReceiverWrapper receiver : sPendingReceivers) { 56 try { 57 receiver.mReceiver.onError(ERROR_UNAVAILABLE, "Thread daemon died"); 58 } catch (RemoteException e) { 59 // The client is dead, do nothing 60 } 61 } 62 sPendingReceivers.clear(); 63 } 64 } 65 onSuccess(ActiveOperationalDataset dataset)66 public void onSuccess(ActiveOperationalDataset dataset) { 67 synchronized (sPendingReceiversLock) { 68 sPendingReceivers.remove(this); 69 } 70 71 try { 72 mReceiver.onSuccess(dataset); 73 } catch (RemoteException e) { 74 // The client is dead, do nothing 75 } 76 } 77 onError(Throwable e)78 public void onError(Throwable e) { 79 if (e instanceof ThreadNetworkException) { 80 ThreadNetworkException threadException = (ThreadNetworkException) e; 81 onError(threadException.getErrorCode(), threadException.getMessage()); 82 } else if (e instanceof RemoteException) { 83 onError(ERROR_INTERNAL_ERROR, "Thread stack error"); 84 } else { 85 throw new AssertionError(e); 86 } 87 } 88 onError(int errorCode, String errorMessage)89 public void onError(int errorCode, String errorMessage) { 90 synchronized (sPendingReceiversLock) { 91 sPendingReceivers.remove(this); 92 } 93 94 try { 95 mReceiver.onError(errorCode, errorMessage); 96 } catch (RemoteException e) { 97 // The client is dead, do nothing 98 } 99 } 100 } 101