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      1 /*
      2  * Copyright (C) 2016 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.tradefed.log;
     18 
     19 import com.android.tradefed.result.ITestInvocationListener;
     20 import com.android.tradefed.result.InputStreamSource;
     21 import com.android.tradefed.result.LogDataType;
     22 
     23 /**
     24  * An entity that can perform logging of data streams of various types.
     25  */
     26 public interface ITestLogger {
     27 
     28     /**
     29      * Provides the associated log or debug data from the test invocation.
     30      * <p/>
     31      * Must be called before {@link ITestInvocationListener#invocationFailed(Throwable)} or
     32      * {@link ITestInvocationListener#invocationEnded(long)}
     33      * <p/>
     34      * The TradeFederation framework will automatically call this method, providing the host log
     35      * and if applicable, the device logcat.
     36      *
     37      * @param dataName a {@link String} descriptive name of the data. e.g. "device_logcat". Note
     38      *            dataName may not be unique per invocation. ie implementers must be able to handle
     39      *            multiple calls with same dataName
     40      * @param dataType the {@link LogDataType} of the data
     41      * @param dataStream the {@link InputStreamSource} of the data. Implementers should call
     42      *        createInputStream to start reading the data, and ensure to close the resulting
     43      *        InputStream when complete. Callers should ensure the source of the data remains
     44      *        present and accessible until the testLog method completes.
     45      */
     46     default public void testLog(String dataName, LogDataType dataType,
     47             InputStreamSource dataStream) { }
     48 
     49 }
     50