1 /*
2  * Copyright (C) 2023 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 android.car.cts.utils;
18 
19 import android.app.UiAutomation;
20 import android.os.ParcelFileDescriptor;
21 
22 import androidx.test.platform.app.InstrumentationRegistry;
23 
24 import java.io.ByteArrayOutputStream;
25 import java.io.FileInputStream;
26 import java.io.IOException;
27 
28 /**
29  * Class contains static methods to dump proto for car services
30  */
31 public final class ProtoDumpUtils {
ProtoDumpUtils()32     private ProtoDumpUtils() {
33     }
34 
35     /**
36      * Dump proto by shell command
37      *
38      * @param serviceName Name of service to be dumped.
39      * @return byte array for dumped proto
40      */
executeProtoDumpShellCommand(String serviceName)41     public static byte[] executeProtoDumpShellCommand(String serviceName) {
42         UiAutomation uiAutomation = InstrumentationRegistry.getInstrumentation()
43                 .getUiAutomation();
44         ParcelFileDescriptor pfd = uiAutomation.executeShellCommand(
45                 "dumpsys car_service --services " + serviceName + " --proto");
46         try (FileInputStream fis = new ParcelFileDescriptor.AutoCloseInputStream(pfd)) {
47             byte[] buf = new byte[512];
48             int bytesRead;
49             ByteArrayOutputStream stdout = new ByteArrayOutputStream();
50             while ((bytesRead = fis.read(buf)) != -1) {
51                 stdout.write(buf, 0, bytesRead);
52             }
53             return stdout.toByteArray();
54         } catch (IOException e) {
55             throw new RuntimeException(e);
56         }
57     }
58 }
59