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/*
* Copyright 2022 Google LLC
*
* 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.google.android.libraries.mobiledatadownload.internal.logging;
import static com.google.common.util.concurrent.Futures.immediateVoidFuture;
import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
import android.content.Context;
import com.google.android.libraries.mobiledatadownload.Flags;
import com.google.android.libraries.mobiledatadownload.annotations.InstanceId;
import com.google.android.libraries.mobiledatadownload.internal.ApplicationContext;
import com.google.android.libraries.mobiledatadownload.tracing.PropagatedFutures;
import com.google.common.base.Optional;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.mobiledatadownload.LogProto.DataDownloadFileGroupStats;
import com.google.mobiledatadownload.LogProto.MddNetworkStats;
import com.google.mobiledatadownload.internal.MetadataProto.FileGroupLoggingState;
import java.util.List;
import javax.inject.Inject;
/**
* Log MDD network stats at daily maintenance. For each file group, it will log the total bytes
* downloaded on Wifi and Cellular and also total bytes downloaded by MDD on Wifi and Cellular.
*/
public class NetworkLogger {
private final EventLogger eventLogger;
private final Flags flags;
private final LoggingStateStore loggingStateStore;
@Inject
public NetworkLogger(
@ApplicationContext Context context,
EventLogger eventLogger,
@InstanceId Optional<String> instanceIdOptional,
Flags flags,
LoggingStateStore loggingStateStore) {
this.eventLogger = eventLogger;
this.flags = flags;
this.loggingStateStore = loggingStateStore;
}
public ListenableFuture<Void> log() {
if (!flags.logNetworkStats()) {
return immediateVoidFuture();
}
// Clear the accumulated network usage even if the device isn't logging, otherwise with 1%
// sampling, we could potentially log network usage for up to 100 days.
ListenableFuture<List<FileGroupLoggingState>> allDataUsageFuture =
loggingStateStore.getAndResetAllDataUsage();
return eventLogger.logMddNetworkStats(
() ->
PropagatedFutures.transform(
allDataUsageFuture, this::buildNetworkStats, directExecutor()));
}
private MddNetworkStats buildNetworkStats(List<FileGroupLoggingState> allDataUsage) {
long totalMddWifiCount = 0;
long totalMddCellularCount = 0;
MddNetworkStats.Builder networkStatsBuilder = MddNetworkStats.newBuilder();
for (FileGroupLoggingState fileGroupLoggingState : allDataUsage) {
networkStatsBuilder.addGroupStats(
MddNetworkStats.GroupStats.newBuilder()
.setDataDownloadFileGroupStats(
DataDownloadFileGroupStats.newBuilder()
.setOwnerPackage(fileGroupLoggingState.getGroupKey().getOwnerPackage())
.setFileGroupName(fileGroupLoggingState.getGroupKey().getGroupName())
.setFileGroupVersionNumber(fileGroupLoggingState.getFileGroupVersionNumber())
.setBuildId(fileGroupLoggingState.getBuildId())
.setVariantId(fileGroupLoggingState.getVariantId())
.build())
.setTotalWifiBytes(fileGroupLoggingState.getWifiUsage())
.setTotalCellularBytes(fileGroupLoggingState.getCellularUsage()));
totalMddWifiCount += fileGroupLoggingState.getWifiUsage();
totalMddCellularCount += fileGroupLoggingState.getCellularUsage();
}
networkStatsBuilder
.setTotalMddWifiBytes(totalMddWifiCount)
.setTotalMddCellularBytes(totalMddCellularCount);
return networkStatsBuilder.build();
}
}
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