| /* |
| * 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.car.stats; |
| |
| import android.annotation.Nullable; |
| import android.car.vms.VmsLayer; |
| import android.util.ArrayMap; |
| |
| import com.android.internal.annotations.GuardedBy; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicLong; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Logger for per-client VMS statistics. |
| */ |
| public class VmsClientLog { |
| /** |
| * Constants used for identifying client connection states. |
| */ |
| public static class ConnectionState { |
| // Attempting to connect to the client |
| public static final int CONNECTING = 0; |
| // Client connection established |
| public static final int CONNECTED = 1; |
| // Client connection closed unexpectedly |
| public static final int DISCONNECTED = 2; |
| // Client connection closed by VMS |
| public static final int TERMINATED = 3; |
| // Error establishing the client connection |
| public static final int CONNECTION_ERROR = 4; |
| } |
| |
| private final Object mLock = new Object(); |
| |
| private final int mUid; |
| private final String mPackageName; |
| |
| @GuardedBy("mLock") |
| private Map<Integer, AtomicLong> mConnectionStateCounters = new ArrayMap<>(); |
| |
| @GuardedBy("mLock") |
| private final Map<VmsLayer, VmsClientStats> mLayerStats = new ArrayMap<>(); |
| |
| VmsClientLog(int clientUid, @Nullable String clientPackage) { |
| mUid = clientUid; |
| mPackageName = clientPackage != null ? clientPackage : ""; |
| } |
| |
| public int getUid() { |
| return mUid; |
| } |
| |
| public String getPackageName() { |
| return mPackageName; |
| } |
| |
| /** |
| * Logs a connection state change for the client. |
| * |
| * @param connectionState New connection state |
| */ |
| public void logConnectionState(int connectionState) { |
| AtomicLong counter; |
| synchronized (mLock) { |
| counter = mConnectionStateCounters.computeIfAbsent(connectionState, |
| ignored -> new AtomicLong()); |
| } |
| counter.incrementAndGet(); |
| } |
| |
| long getConnectionStateCount(int connectionState) { |
| AtomicLong counter; |
| synchronized (mLock) { |
| counter = mConnectionStateCounters.get(connectionState); |
| } |
| return counter == null ? 0L : counter.get(); |
| } |
| |
| /** |
| * Logs that a packet was published by the client. |
| * |
| * @param layer Layer of packet |
| * @param size Size of packet |
| */ |
| public void logPacketSent(VmsLayer layer, long size) { |
| getLayerEntry(layer).packetSent(size); |
| } |
| |
| /** |
| * Logs that a packet was received successfully by the client. |
| * |
| * @param layer Layer of packet |
| * @param size Size of packet |
| */ |
| public void logPacketReceived(VmsLayer layer, long size) { |
| getLayerEntry(layer).packetReceived(size); |
| } |
| |
| /** |
| * Logs that a packet was dropped due to an error delivering to the client. |
| * |
| * @param layer Layer of packet |
| * @param size Size of packet |
| */ |
| public void logPacketDropped(VmsLayer layer, long size) { |
| getLayerEntry(layer).packetDropped(size); |
| } |
| |
| Collection<VmsClientStats> getLayerEntries() { |
| synchronized (mLock) { |
| return mLayerStats.values().stream() |
| .map(VmsClientStats::new) // Make a deep copy of the entries |
| .collect(Collectors.toList()); |
| } |
| } |
| |
| private VmsClientStats getLayerEntry(VmsLayer layer) { |
| synchronized (mLock) { |
| return mLayerStats.computeIfAbsent( |
| layer, |
| (k) -> new VmsClientStats(mUid, layer)); |
| } |
| } |
| } |