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/*
* Copyright (C) 2016 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.tv.tuner.tvinput;
import android.app.job.JobParameters;
import android.app.job.JobService;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.media.tv.TvContract;
import android.net.Uri;
import android.os.AsyncTask;
import android.util.Log;
import com.android.tv.TvApplication;
import com.android.tv.dvr.DvrStorageStatusManager;
import com.android.tv.util.Utils;
import java.io.File;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* Creates {@link JobService} to clean up recorded program files which are not referenced
* from database.
*/
public class TunerStorageCleanUpService extends JobService {
private static final String TAG = "TunerStorageCleanUpService";
private CleanUpStorageTask mTask;
@Override
public void onCreate() {
if (!TvApplication.getSingletons(this).getTvInputManagerHelper().hasTvInputManager()) {
Log.wtf(TAG, "Stopping because device does not have a TvInputManager");
this.stopSelf();
return;
}
TvApplication.setCurrentRunningProcess(this, false);
super.onCreate();
mTask = new CleanUpStorageTask(this, this);
}
@Override
public boolean onStartJob(JobParameters params) {
mTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, params);
return true;
}
@Override
public boolean onStopJob(JobParameters params) {
return false;
}
/**
* Cleans up recorded program files which are not referenced from database.
* Cleaning up will be done periodically.
*/
public static class CleanUpStorageTask extends AsyncTask<JobParameters, Void, JobParameters[]> {
private final static String[] mProjection = {
TvContract.RecordedPrograms.COLUMN_PACKAGE_NAME,
TvContract.RecordedPrograms.COLUMN_RECORDING_DATA_URI
};
private final static long ELAPSED_MILLIS_TO_DELETE = TimeUnit.DAYS.toMillis(1);
private final Context mContext;
private final DvrStorageStatusManager mDvrStorageStatusManager;
private final JobService mJobService;
private final ContentResolver mContentResolver;
/**
* Creates a recurring storage cleaning task.
*
* @param context {@link Context}
* @param jobService {@link JobService}
*/
public CleanUpStorageTask(Context context, JobService jobService) {
mContext = context;
mDvrStorageStatusManager =
TvApplication.getSingletons(mContext).getDvrStorageStatusManager();
mJobService = jobService;
mContentResolver = mContext.getContentResolver();
}
private Set<String> getRecordedProgramsDirs() {
try (Cursor c = mContentResolver.query(
TvContract.RecordedPrograms.CONTENT_URI, mProjection, null, null, null)) {
if (c == null) {
return null;
}
Set<String> recordedProgramDirs = new HashSet<>();
while (c.moveToNext()) {
String packageName = c.getString(0);
String dataUriString = c.getString(1);
if (dataUriString == null) {
continue;
}
Uri dataUri = Uri.parse(dataUriString);
if (!Utils.isInBundledPackageSet(packageName)
|| dataUri == null || dataUri.getPath() == null
|| !ContentResolver.SCHEME_FILE.equals(dataUri.getScheme())) {
continue;
}
File recordedProgramDir = new File(dataUri.getPath());
try {
recordedProgramDirs.add(recordedProgramDir.getCanonicalPath());
} catch (IOException | SecurityException e) {
}
}
return recordedProgramDirs;
}
}
@Override
protected JobParameters[] doInBackground(JobParameters... params) {
if (mDvrStorageStatusManager.getDvrStorageStatus()
== DvrStorageStatusManager.STORAGE_STATUS_MISSING) {
return params;
}
File dvrRecordingDir = mDvrStorageStatusManager.getRecordingRootDataDirectory();
if (dvrRecordingDir == null || !dvrRecordingDir.isDirectory()) {
return params;
}
Set<String> recordedProgramDirs = getRecordedProgramsDirs();
if (recordedProgramDirs == null) {
return params;
}
File[] files = dvrRecordingDir.listFiles();
if (files == null || files.length == 0) {
return params;
}
for (File recordingDir : files) {
try {
if (!recordedProgramDirs.contains(recordingDir.getCanonicalPath())) {
long lastModified = recordingDir.lastModified();
long now = System.currentTimeMillis();
if (lastModified != 0
&& lastModified < now - ELAPSED_MILLIS_TO_DELETE) {
// To prevent current recordings from being deleted,
// deletes recordings which was not modified for long enough time.
Utils.deleteDirOrFile(recordingDir);
}
}
} catch (IOException | SecurityException e) {
// would not happen
}
}
return params;
}
@Override
protected void onPostExecute(JobParameters[] params) {
for (JobParameters param : params) {
mJobService.jobFinished(param, false);
}
}
}
}
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