1 // Copyright 2021 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package com.google.android.downloader; 16 17 import com.google.errorprone.annotations.FormatMethod; 18 import com.google.errorprone.annotations.FormatString; 19 import javax.annotation.Nullable; 20 21 /** 22 * Interface for a generic logging system, as used by the downloader. Allows the caller to configure 23 * the logging implementation as needed, and avoid extra dependencies in the downloader. 24 */ 25 public interface DownloaderLogger { 26 @FormatMethod logFine(@ormatString String message, Object... args)27 void logFine(@FormatString String message, Object... args); 28 29 @FormatMethod logInfo(@ormatString String message, Object... args)30 void logInfo(@FormatString String message, Object... args); 31 32 @FormatMethod logWarning(@ormatString String message, Object... args)33 void logWarning(@FormatString String message, Object... args); 34 35 @FormatMethod logWarning(@ullable Throwable cause, @FormatString String message, Object... args)36 void logWarning(@Nullable Throwable cause, @FormatString String message, Object... args); 37 38 @FormatMethod logError(@ormatString String message, Object... args)39 void logError(@FormatString String message, Object... args); 40 41 @FormatMethod logError(@ullable Throwable cause, @FormatString String message, Object... args)42 void logError(@Nullable Throwable cause, @FormatString String message, Object... args); 43 } 44