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/*
* Copyright © 2018 Samuel Holland <samuel@sholland.org>
* Copyright © 2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.util;
import android.support.annotation.NonNull;
import android.util.Log;
import java9.util.concurrent.CompletionException;
import java9.util.function.BiConsumer;
/**
* Helpers for logging exceptions from asynchronous tasks. These can be passed to
* {@code CompletionStage.whenComplete()} at the end of an asynchronous future chain.
*/
public enum ExceptionLoggers implements BiConsumer<Object, Throwable> {
D(Log.DEBUG),
E(Log.ERROR);
private static final String TAG = "WireGuard/" + ExceptionLoggers.class.getSimpleName();
private final int priority;
ExceptionLoggers(final int priority) {
this.priority = priority;
}
public static Throwable unwrap(final Throwable throwable) {
if (throwable instanceof CompletionException && throwable.getCause() != null)
return throwable.getCause();
return throwable;
}
@NonNull
public static String unwrapMessage(Throwable throwable) {
throwable = unwrap(throwable);
final String message = throwable.getMessage();
if (message != null)
return message;
return throwable.getClass().getSimpleName();
}
@Override
public void accept(final Object result, final Throwable throwable) {
if (throwable != null)
Log.println(Log.ERROR, TAG, Log.getStackTraceString(throwable));
else if (priority <= Log.DEBUG)
Log.println(priority, TAG, "Future completed successfully");
}
}
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