content: /*
   * 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.SystemApi;
  import android.annotation.TestApi;
  import android.os.Parcel;
  import android.os.Parcelable;
  import android.util.SparseArray;
  
  import com.android.internal.util.MessageUtils;
  
  /**
   * An event recorded when IpReachabilityMonitor sends a neighbor probe or receives
   * a neighbor probe result.
   * {@hide}
   */
  @SystemApi
  @TestApi
  public final class IpReachabilityEvent implements IpConnectivityLog.Event {
  
      // Event types.
      /** A probe forced by IpReachabilityMonitor. */
      public static final int PROBE                     = 1 << 8;
      /** Neighbor unreachable after a forced probe. */
      public static final int NUD_FAILED                = 2 << 8;
      /** Neighbor unreachable after a forced probe, IP provisioning is also lost. */
      public static final int PROVISIONING_LOST         = 3 << 8;
      /** Neighbor unreachable notification from kernel. */
      public static final int NUD_FAILED_ORGANIC        = 4 << 8;
      /** Neighbor unreachable notification from kernel, IP provisioning is also lost. */
      public static final int PROVISIONING_LOST_ORGANIC = 5 << 8;
  
      // eventType byte format (MSB to LSB):
      // byte 0: unused
      // byte 1: unused
      // byte 2: type of event: PROBE, NUD_FAILED, PROVISIONING_LOST
      // byte 3: when byte 2 == PROBE, errno code from RTNetlink or IpReachabilityMonitor.
      /** @hide */
      public final int eventType;
  
      public IpReachabilityEvent(int eventType) {
          this.eventType = eventType;
      }
  
      private IpReachabilityEvent(Parcel in) {
          this.eventType = in.readInt();
      }
  
      /** @hide */
      @Override
      public void writeToParcel(Parcel out, int flags) {
          out.writeInt(eventType);
      }
  
      /** @hide */
      @Override
      public int describeContents() {
          return 0;
      }
  
      /** @hide */
      public static final @android.annotation.NonNull Parcelable.Creator<IpReachabilityEvent> CREATOR
          = new Parcelable.Creator<IpReachabilityEvent>() {
          public IpReachabilityEvent createFromParcel(Parcel in) {
              return new IpReachabilityEvent(in);
          }
  
          public IpReachabilityEvent[] newArray(int size) {
              return new IpReachabilityEvent[size];
          }
      };
  
      @Override
      public String toString() {
          int hi = eventType & 0xff00;
          int lo = eventType & 0x00ff;
          String eventName = Decoder.constants.get(hi);
          return String.format("IpReachabilityEvent(%s:%02x)", eventName, lo);
      }
  
      @Override
      public boolean equals(Object obj) {
          if (obj == null || !(obj.getClass().equals(IpReachabilityEvent.class))) return false;
          final IpReachabilityEvent other = (IpReachabilityEvent) obj;
          return eventType == other.eventType;
      }
  
      final static class Decoder {
          static final SparseArray<String> constants =
                  MessageUtils.findMessageNames(new Class[]{IpReachabilityEvent.class},
                  new String[]{"PROBE", "PROVISIONING_", "NUD_"});
      }
  }
  