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/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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 com.android.server.backup.transport;
import android.annotation.Nullable;
import android.os.DeadObjectException;
import android.util.Log;
import android.util.Slog;
import com.android.internal.backup.IBackupTransport;
/** Utility methods for transport-related operations. */
public class TransportUtils {
private static final String TAG = "TransportUtils";
/**
* Throws {@link TransportNotAvailableException} if {@param transport} is null. The semantics is
* similar to a {@link DeadObjectException} coming from a dead transport binder.
*/
public static IBackupTransport checkTransportNotNull(@Nullable IBackupTransport transport)
throws TransportNotAvailableException {
if (transport == null) {
log(Log.ERROR, TAG, "Transport not available");
throw new TransportNotAvailableException();
}
return transport;
}
static void log(int priority, String tag, String message) {
log(priority, tag, null, message);
}
static void log(int priority, String tag, @Nullable String caller, String message) {
log(priority, tag, "", caller, message);
}
static void log(
int priority, String tag, String prefix, @Nullable String caller, String message) {
if (Log.isLoggable(tag, priority)) {
if (caller != null) {
prefix += "[" + caller + "] ";
}
Slog.println(priority, tag, prefix + message);
}
}
private TransportUtils() {}
}
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