| /* |
| * Copyright (C) 2019 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.managedprovisioning.analytics; |
| |
| import static com.android.internal.util.Preconditions.checkNotNull; |
| |
| import android.app.admin.DevicePolicyEventLogger; |
| import android.app.job.JobParameters; |
| import android.app.job.JobService; |
| import android.os.AsyncTask; |
| import android.os.PersistableBundle; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.managedprovisioning.DevicePolicyProtos.DevicePolicyEvent; |
| import com.android.managedprovisioning.common.ProvisionLogger; |
| |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * A {@link JobService} that reads the logs from the {@link InputStream} written to by |
| * {@link DeferredMetricsWriter} and writes them using another {@link MetricsWriter}. |
| * |
| * @see DeferredMetricsWriter |
| */ |
| public class ProcessMetricsJobService extends JobService { |
| |
| static String EXTRA_FILE_PATH = "extra_file_path"; |
| |
| private final MetricsWriter mMetricsWriter; |
| |
| @VisibleForTesting |
| ProcessMetricsJobService(MetricsWriter metricsWriter) { |
| mMetricsWriter = metricsWriter; |
| } |
| |
| public ProcessMetricsJobService() { |
| this(new InstantMetricsWriter()); |
| } |
| |
| @Override |
| public boolean onStartJob(JobParameters params) { |
| final PersistableBundle extras = params.getExtras(); |
| if (extras == null || !extras.containsKey(EXTRA_FILE_PATH)) { |
| return false; |
| } |
| final File metrics = new File(extras.getString(EXTRA_FILE_PATH)); |
| if (!metrics.exists()) { |
| return false; |
| } |
| executeReadDeferredMetrics(params, metrics); |
| return true; |
| } |
| |
| @VisibleForTesting |
| void executeReadDeferredMetrics(JobParameters params, |
| File metricsFile) { |
| new ReadDeferredMetricsAsyncTask(params, metricsFile, mMetricsWriter).execute(); |
| } |
| |
| @Override |
| public boolean onStopJob(JobParameters params) { |
| return false; |
| } |
| |
| /** |
| * An {@link AsyncTask} which reads the logs from the {@link File} specified in the constructor |
| * and writes them to the specified {@link MetricsWriter}. |
| * |
| * <p>The {@link File} will be deleted after they are written to the {@link MetricsWriter}. |
| */ |
| private class ReadDeferredMetricsAsyncTask extends AsyncTask<Void, Void, Void> { |
| private static final int METRICS_INTERVAL_MILLIS = 10; |
| private final MetricsWriter mMetricsWriter; |
| private final File mFile; |
| private final JobParameters mJobParameters; |
| |
| ReadDeferredMetricsAsyncTask(JobParameters params, |
| File file, |
| MetricsWriter metricsWriter) { |
| mFile = checkNotNull(file); |
| mMetricsWriter = metricsWriter; |
| mJobParameters = params; |
| } |
| |
| @Override |
| protected Void doInBackground(Void... voids) { |
| try (InputStream inputStream = new FileInputStream(mFile)) { |
| DevicePolicyEvent event; |
| while ((event = DevicePolicyEvent.parseDelimitedFrom(inputStream)) != null) { |
| delayProcessMetric(); |
| mMetricsWriter.write(devicePolicyEventToLogger(event)); |
| } |
| } catch (IOException e) { |
| ProvisionLogger.loge( |
| "Could not parse DevicePolicyEvent while reading from stream.", e); |
| } finally { |
| mFile.delete(); |
| } |
| return null; |
| } |
| |
| @Override |
| protected void onPostExecute(Void aVoid) { |
| jobFinished(mJobParameters, false); |
| } |
| |
| /** |
| * Waits for {@link #METRICS_INTERVAL_MILLIS}. |
| * <p>statsd cannot handle too many metrics at once, so we must wait between each |
| * {@link MetricsWriter#write(DevicePolicyEventLogger...)} call. |
| */ |
| private void delayProcessMetric() { |
| try { |
| Thread.sleep(METRICS_INTERVAL_MILLIS); |
| } catch (InterruptedException e) { |
| ProvisionLogger.loge( |
| "Thread interrupted while waiting to log metric.", e); |
| } |
| } |
| |
| private DevicePolicyEventLogger devicePolicyEventToLogger(DevicePolicyEvent event) { |
| final DevicePolicyEventLogger eventLogger = DevicePolicyEventLogger |
| .createEvent(event.getEventId()) |
| .setAdmin(event.getAdminPackageName()) |
| .setInt(event.getIntegerValue()) |
| .setBoolean(event.getBooleanValue()) |
| .setTimePeriod(event.getTimePeriodMillis()); |
| if (event.getStringListValueCount() > 0) { |
| eventLogger.setStrings(event.getStringListValueList().toArray(new String[0])); |
| } |
| return eventLogger; |
| } |
| } |
| } |