/*
 * 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.os.Parcel;
import android.os.Parcelable;

/**
 * An event logged for an interface with APF capabilities when its IpManager state machine exits.
 * {@hide}
 */
@SystemApi
public final class ApfStats implements Parcelable {

    public final long durationMs;     // time interval in milliseconds these stastistics covers
    public final int receivedRas;     // number of received RAs
    public final int matchingRas;     // number of received RAs matching a known RA
    public final int droppedRas;      // number of received RAs ignored due to the MAX_RAS limit
    public final int zeroLifetimeRas; // number of received RAs with a minimum lifetime of 0
    public final int parseErrors;     // number of received RAs that could not be parsed
    public final int programUpdates;  // number of APF program updates
    public final int maxProgramSize;  // maximum APF program size advertised by hardware

    /** {@hide} */
    public ApfStats(long durationMs, int receivedRas, int matchingRas, int droppedRas,
            int zeroLifetimeRas, int parseErrors, int programUpdates, int maxProgramSize) {
        this.durationMs = durationMs;
        this.receivedRas = receivedRas;
        this.matchingRas = matchingRas;
        this.droppedRas = droppedRas;
        this.zeroLifetimeRas = zeroLifetimeRas;
        this.parseErrors = parseErrors;
        this.programUpdates = programUpdates;
        this.maxProgramSize = maxProgramSize;
    }

    private ApfStats(Parcel in) {
        this.durationMs = in.readLong();
        this.receivedRas = in.readInt();
        this.matchingRas = in.readInt();
        this.droppedRas = in.readInt();
        this.zeroLifetimeRas = in.readInt();
        this.parseErrors = in.readInt();
        this.programUpdates = in.readInt();
        this.maxProgramSize = in.readInt();
    }

    @Override
    public void writeToParcel(Parcel out, int flags) {
        out.writeLong(durationMs);
        out.writeInt(receivedRas);
        out.writeInt(matchingRas);
        out.writeInt(droppedRas);
        out.writeInt(zeroLifetimeRas);
        out.writeInt(parseErrors);
        out.writeInt(programUpdates);
        out.writeInt(maxProgramSize);
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public String toString() {
        return new StringBuilder("ApfStats(")
                .append(String.format("%dms ", durationMs))
                .append(String.format("%dB RA: {", maxProgramSize))
                .append(String.format("%d received, ", receivedRas))
                .append(String.format("%d matching, ", matchingRas))
                .append(String.format("%d dropped, ", droppedRas))
                .append(String.format("%d zero lifetime, ", zeroLifetimeRas))
                .append(String.format("%d parse errors, ", parseErrors))
                .append(String.format("%d program updates})", programUpdates))
                .toString();
    }

    public static final Parcelable.Creator<ApfStats> CREATOR = new Parcelable.Creator<ApfStats>() {
        public ApfStats createFromParcel(Parcel in) {
            return new ApfStats(in);
        }

        public ApfStats[] newArray(int size) {
            return new ApfStats[size];
        }
    };
}