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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 android.annotation.NonNull;
import android.annotation.SystemApi;
import android.annotation.TestApi;
import android.net.ConnectivityMetricsEvent;
import android.net.IIpConnectivityMetrics;
import android.net.Network;
import android.os.Parcelable;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.util.Log;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.util.BitUtils;
/**
* Class for logging IpConnectvity events with IpConnectivityMetrics
* {@hide}
*/
@SystemApi
@TestApi
public class IpConnectivityLog {
private static final String TAG = IpConnectivityLog.class.getSimpleName();
private static final boolean DBG = false;
/** @hide */
public static final String SERVICE_NAME = "connmetrics";
@NonNull
private IIpConnectivityMetrics mService;
/**
* An event to be logged.
*/
public interface Event extends Parcelable {}
/** @hide */
@SystemApi
@TestApi
public IpConnectivityLog() {
}
/** @hide */
@VisibleForTesting
public IpConnectivityLog(@NonNull IIpConnectivityMetrics service) {
mService = service;
}
private boolean checkLoggerService() {
if (mService != null) {
return true;
}
final IIpConnectivityMetrics service =
IIpConnectivityMetrics.Stub.asInterface(ServiceManager.getService(SERVICE_NAME));
if (service == null) {
return false;
}
// Two threads racing here will write the same pointer because getService
// is idempotent once MetricsLoggerService is initialized.
mService = service;
return true;
}
/**
* Log a ConnectivityMetricsEvent.
* @param ev the event to log. If the event timestamp is 0,
* the timestamp is set to the current time in milliseconds.
* @return true if the event was successfully logged.
* @hide
*/
public boolean log(@NonNull ConnectivityMetricsEvent ev) {
if (!checkLoggerService()) {
if (DBG) {
Log.d(TAG, SERVICE_NAME + " service was not ready");
}
return false;
}
if (ev.timestamp == 0) {
ev.timestamp = System.currentTimeMillis();
}
try {
int left = mService.logEvent(ev);
return left >= 0;
} catch (RemoteException e) {
Log.e(TAG, "Error logging event", e);
return false;
}
}
/**
* Log an IpConnectivity event.
* @param timestamp is the epoch timestamp of the event in ms.
* If the timestamp is 0, the timestamp is set to the current time in milliseconds.
* @param data is a Parcelable instance representing the event.
* @return true if the event was successfully logged.
*/
public boolean log(long timestamp, @NonNull Event data) {
ConnectivityMetricsEvent ev = makeEv(data);
ev.timestamp = timestamp;
return log(ev);
}
/**
* Log an IpConnectivity event.
* @param ifname the network interface associated with the event.
* @param data is a Parcelable instance representing the event.
* @return true if the event was successfully logged.
*/
public boolean log(@NonNull String ifname, @NonNull Event data) {
ConnectivityMetricsEvent ev = makeEv(data);
ev.ifname = ifname;
return log(ev);
}
/**
* Log an IpConnectivity event.
* @param network the network associated with the event.
* @param transports the current transports of the network associated with the event, as defined
* in NetworkCapabilities.
* @param data is a Parcelable instance representing the event.
* @return true if the event was successfully logged.
*/
public boolean log(@NonNull Network network, @NonNull int[] transports, @NonNull Event data) {
return log(network.netId, transports, data);
}
/**
* Log an IpConnectivity event.
* @param netid the id of the network associated with the event.
* @param transports the current transports of the network associated with the event, as defined
* in NetworkCapabilities.
* @param data is a Parcelable instance representing the event.
* @return true if the event was successfully logged.
*/
public boolean log(int netid, @NonNull int[] transports, @NonNull Event data) {
ConnectivityMetricsEvent ev = makeEv(data);
ev.netId = netid;
ev.transports = BitUtils.packBits(transports);
return log(ev);
}
/**
* Log an IpConnectivity event.
* @param data is a Parcelable instance representing the event.
* @return true if the event was successfully logged.
*/
public boolean log(@NonNull Event data) {
return log(makeEv(data));
}
private static ConnectivityMetricsEvent makeEv(Event data) {
ConnectivityMetricsEvent ev = new ConnectivityMetricsEvent();
ev.data = data;
return ev;
}
}
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