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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 android.net.metrics;
import static android.net.ConnectivityManager.NETID_UNSET;
import android.net.NetworkCapabilities;
import com.android.internal.util.BitUtils;
import java.util.StringJoiner;
/**
* An event recorded by ConnectivityService when there is a change in the default network.
* {@hide}
*/
public class DefaultNetworkEvent {
// The creation time in milliseconds of this DefaultNetworkEvent.
public final long creationTimeMs;
// The network ID of the network or NETID_UNSET if none.
public int netId = NETID_UNSET;
// The list of transport types, as defined in NetworkCapabilities.java.
public int transports;
// The list of transport types of the last previous default network.
public int previousTransports;
// Whether the network has IPv4/IPv6 connectivity.
public boolean ipv4;
public boolean ipv6;
// The initial network score when this network became the default network.
public int initialScore;
// The initial network score when this network stopped being the default network.
public int finalScore;
// The total duration in milliseconds this network was the default network.
public long durationMs;
// The total duration in milliseconds this network was the default network and was validated.
public long validatedMs;
public DefaultNetworkEvent(long timeMs) {
creationTimeMs = timeMs;
}
/** Update the durationMs of this DefaultNetworkEvent for the given current time. */
public void updateDuration(long timeMs) {
durationMs = timeMs - creationTimeMs;
}
@Override
public String toString() {
StringJoiner j = new StringJoiner(", ", "DefaultNetworkEvent(", ")");
j.add("netId=" + netId);
for (int t : BitUtils.unpackBits(transports)) {
j.add(NetworkCapabilities.transportNameOf(t));
}
j.add("ip=" + ipSupport());
if (initialScore > 0) {
j.add("initial_score=" + initialScore);
}
if (finalScore > 0) {
j.add("final_score=" + finalScore);
}
j.add(String.format("duration=%.0fs", durationMs / 1000.0));
j.add(String.format("validation=%04.1f%%", (validatedMs * 100.0) / durationMs));
return j.toString();
}
private String ipSupport() {
if (ipv4 && ipv6) {
return "IPv4v6";
}
if (ipv6) {
return "IPv6";
}
if (ipv4) {
return "IPv4";
}
return "NONE";
}
}
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