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/*
* Copyright (C) 2011 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.settings.net;
import static android.net.NetworkStats.SET_DEFAULT;
import static android.net.NetworkStats.SET_FOREGROUND;
import static android.net.NetworkStats.TAG_NONE;
import static android.net.NetworkStatsHistory.FIELD_RX_BYTES;
import static android.net.NetworkStatsHistory.FIELD_TX_BYTES;
import android.content.AsyncTaskLoader;
import android.content.Context;
import android.net.INetworkStatsSession;
import android.net.NetworkStatsHistory;
import android.net.NetworkTemplate;
import android.os.Bundle;
import android.os.RemoteException;
import com.android.settings.DataUsageSummary.AppItem;
/**
* Loader for historical chart data for both network and UID details.
*/
public class ChartDataLoader extends AsyncTaskLoader<ChartData> {
private static final String KEY_TEMPLATE = "template";
private static final String KEY_APP = "app";
private static final String KEY_FIELDS = "fields";
private final INetworkStatsSession mSession;
private final Bundle mArgs;
public static Bundle buildArgs(NetworkTemplate template, AppItem app) {
return buildArgs(template, app, FIELD_RX_BYTES | FIELD_TX_BYTES);
}
public static Bundle buildArgs(NetworkTemplate template, AppItem app, int fields) {
final Bundle args = new Bundle();
args.putParcelable(KEY_TEMPLATE, template);
args.putParcelable(KEY_APP, app);
args.putInt(KEY_FIELDS, fields);
return args;
}
public ChartDataLoader(Context context, INetworkStatsSession session, Bundle args) {
super(context);
mSession = session;
mArgs = args;
}
@Override
protected void onStartLoading() {
super.onStartLoading();
forceLoad();
}
@Override
public ChartData loadInBackground() {
final NetworkTemplate template = mArgs.getParcelable(KEY_TEMPLATE);
final AppItem app = mArgs.getParcelable(KEY_APP);
final int fields = mArgs.getInt(KEY_FIELDS);
try {
return loadInBackground(template, app, fields);
} catch (RemoteException e) {
// since we can't do much without history, and we don't want to
// leave with half-baked UI, we bail hard.
throw new RuntimeException("problem reading network stats", e);
}
}
private ChartData loadInBackground(NetworkTemplate template, AppItem app, int fields)
throws RemoteException {
final ChartData data = new ChartData();
data.network = mSession.getHistoryForNetwork(template, fields);
if (app != null) {
data.detailDefault = null;
data.detailForeground = null;
// load stats for current uid and template
final int size = app.uids.size();
for (int i = 0; i < size; i++) {
final int uid = app.uids.keyAt(i);
data.detailDefault = collectHistoryForUid(
template, uid, SET_DEFAULT, data.detailDefault);
data.detailForeground = collectHistoryForUid(
template, uid, SET_FOREGROUND, data.detailForeground);
}
data.detail = new NetworkStatsHistory(data.detailForeground.getBucketDuration());
data.detail.recordEntireHistory(data.detailDefault);
data.detail.recordEntireHistory(data.detailForeground);
}
return data;
}
@Override
protected void onStopLoading() {
super.onStopLoading();
cancelLoad();
}
@Override
protected void onReset() {
super.onReset();
cancelLoad();
}
/**
* Collect {@link NetworkStatsHistory} for the requested UID, combining with
* an existing {@link NetworkStatsHistory} if provided.
*/
private NetworkStatsHistory collectHistoryForUid(
NetworkTemplate template, int uid, int set, NetworkStatsHistory existing)
throws RemoteException {
final NetworkStatsHistory history = mSession.getHistoryForUid(
template, uid, set, TAG_NONE, FIELD_RX_BYTES | FIELD_TX_BYTES);
if (existing != null) {
existing.recordEntireHistory(history);
return existing;
} else {
return history;
}
}
}
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