| /* |
| * Copyright (C) 2018 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.wm.flicker.monitor; |
| |
| import static com.android.compatibility.common.util.SystemUtil.runShellCommand; |
| |
| import android.os.RemoteException; |
| |
| import androidx.annotation.VisibleForTesting; |
| |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Locale; |
| |
| /** |
| * Base class for monitors containing common logic to read the trace |
| * as a byte array and save the trace to another location. |
| */ |
| public abstract class TraceMonitor implements ITransitionMonitor { |
| public static final String TAG = "FLICKER"; |
| private static final String TRACE_DIR = "/data/misc/wmtrace/"; |
| |
| private Path mOutputDir; |
| public String mTraceFileName; |
| |
| public abstract boolean isEnabled() throws RemoteException; |
| |
| public TraceMonitor(String outputDir, String traceFileName) { |
| mOutputDir = Paths.get(outputDir); |
| mTraceFileName = traceFileName; |
| } |
| |
| /** |
| * Saves trace file to the external storage directory suffixing the name with the testtag |
| * and iteration. |
| * |
| * Moves the trace file from the default location via a shell command since the test app |
| * does not have security privileges to access /data/misc/wmtrace. |
| * |
| * @param testTag suffix added to trace name used to identify trace |
| * |
| * @return Path to saved trace file |
| */ |
| @Override |
| public Path save(String testTag) { |
| OUTPUT_DIR.toFile().mkdirs(); |
| Path traceFileCopy = getOutputTraceFilePath(testTag); |
| |
| // Read the input stream fully. |
| String copyCommand = String.format(Locale.getDefault(), "mv %s%s %s", TRACE_DIR, |
| mTraceFileName, traceFileCopy.toString()); |
| runShellCommand(copyCommand); |
| return traceFileCopy; |
| } |
| |
| @VisibleForTesting |
| public Path getOutputTraceFilePath(String testTag) { |
| return mOutputDir.resolve(mTraceFileName + "_" + testTag); |
| } |
| } |