org.midonet.odp.flows.FlowStats.java Source code

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Here is the source code for org.midonet.odp.flows.FlowStats.java

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/*
 * Copyright 2014 Midokura SARL
 *
 * 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 org.midonet.odp.flows;

import java.beans.ConstructorProperties;
import java.nio.ByteBuffer;

import com.google.common.primitives.Longs;

import org.midonet.netlink.NetlinkSerializable;

public class FlowStats implements NetlinkSerializable {
    /** Number of matched packets. */
    /*__u64*/ public long packets;

    /** Number of matched bytes. */
    /*__u64*/ public long bytes;

    public FlowStats() {
        packets = 0;
        bytes = 0;
    }

    @ConstructorProperties({ "packets", "bytes" })
    public FlowStats(long packets, long bytes) {
        this.packets = packets;
        this.bytes = bytes;
    }

    public void updateAndGetDelta(FlowStats newStats, FlowStats delta) {
        delta.packets = newStats.packets - packets;
        delta.bytes = newStats.bytes - bytes;
        packets = newStats.packets;
        bytes = newStats.bytes;
    }

    public void add(FlowStats increment) {
        packets += increment.packets;
        bytes += increment.bytes;
    }

    public long getPackets() {
        return packets;
    }

    public long getBytes() {
        return bytes;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o)
            return true;
        if (o == null || getClass() != o.getClass())
            return false;

        @SuppressWarnings("unchecked")
        FlowStats that = (FlowStats) o;

        return this.bytes == that.bytes && this.packets == that.packets;
    }

    @Override
    public int hashCode() {
        return 31 * Longs.hashCode(packets) + Longs.hashCode(bytes);
    }

    @Override
    public String toString() {
        return "FlowStats{" + "packets=" + packets + ", bytes=" + bytes + '}';
    }

    public void deserialize(ByteBuffer buf) {
        packets = buf.getLong();
        bytes = buf.getLong();
    }

    public void clear() {
        packets = 0;
        bytes = 0;
    }

    @Override
    public int serializeInto(ByteBuffer buffer) {
        buffer.putLong(packets);
        buffer.putLong(bytes);
        return 16;
    }
}