TransportUtils.java revision 861b420bc3282da174523b309b8886fb0d50da58
1af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino/* 2af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * Copyright (C) 2017 The Android Open Source Project 3af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * 4af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * Licensed under the Apache License, Version 2.0 (the "License"); 5af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * you may not use this file except in compliance with the License. 6af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * You may obtain a copy of the License at 7af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * 8af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * http://www.apache.org/licenses/LICENSE-2.0 9af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * 10af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * Unless required by applicable law or agreed to in writing, software 11af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * distributed under the License is distributed on an "AS IS" BASIS, 12af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * See the License for the specific language governing permissions and 14af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * limitations under the License 15af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino */ 16af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino 17af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufinopackage com.android.server.backup.transport; 18af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino 19af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufinoimport android.annotation.Nullable; 20af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufinoimport android.os.DeadObjectException; 21af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufinoimport android.util.Log; 22af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufinoimport android.util.Slog; 23af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino 24af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufinoimport com.android.internal.backup.IBackupTransport; 25af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino 26af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino/** Utility methods for transport-related operations. */ 27af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufinopublic class TransportUtils { 284719ed513e68ac0c89f5830b2d50edb960b6ba34Bernardo Rufino private static final String TAG = "TransportUtils"; 29af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino 30af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino /** 31af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * Throws {@link TransportNotAvailableException} if {@param transport} is null. The semantics is 32af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino * similar to a {@link DeadObjectException} coming from a dead transport binder. 33af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino */ 34998fdaa63622a8769b50a01fff14d9cc2251632fBernardo Rufino public static IBackupTransport checkTransportNotNull(@Nullable IBackupTransport transport) 35af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino throws TransportNotAvailableException { 36af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino if (transport == null) { 374719ed513e68ac0c89f5830b2d50edb960b6ba34Bernardo Rufino log(Log.ERROR, TAG, "Transport not available"); 38af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino throw new TransportNotAvailableException(); 39af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino } 40af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino return transport; 41af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino } 42af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino 43af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino static void log(int priority, String tag, String message) { 44861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino if (Log.isLoggable(tag, priority)) { 45861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino Slog.println(priority, tag, message); 46861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino } 47af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino } 48af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino 49861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino static String formatMessage(@Nullable String prefix, @Nullable String caller, String message) { 50861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino StringBuilder string = new StringBuilder(); 51861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino if (prefix != null) { 52861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino string.append(prefix).append(" "); 53861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino } 54861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino if (caller != null) { 55861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino string.append("[").append(caller).append("] "); 56af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino } 57861b420bc3282da174523b309b8886fb0d50da58Bernardo Rufino return string.append(message).toString(); 58af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino } 59af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino 60af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino private TransportUtils() {} 61af547f4a15a7d6121306a5e973ae7f3709e5df3aBernardo Rufino} 62