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/*
 * Copyright 2016-present Open Networking Foundation
 *
 * 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.onosproject.store.primitives;

import org.onosproject.cluster.Partition;
import org.onosproject.event.AbstractEvent;

import java.util.Objects;

/**
 * Describes partition-related event.
 */
public class PartitionEvent extends AbstractEvent {

    /**
     * Type of partition-related events.
     */
    public enum Type {

        /**
         * Signifies that a partition has been administratively updated.
         */
        UPDATED,

        /**
         * Signifies that a partition has been successfully opened.
         */
        OPENED,

        /**
         * Signifies that a partition has been successfully closed.
         */
        CLOSED,

        /**
         * Signifies that a partition is available for operations.
         */
        AVAILABLE,

        /**
         * Signifies that a partition is unavailable for operations.
         */
        UNAVAILABLE,
    }

    /**
     * Creates an event of a given type and for the specified partition and time.
     *
     * @param type     partition event type
     * @param subject  event partition subject
     * @param time     occurrence time
     */
    protected PartitionEvent(Type type, Partition subject, long time) {
        super(type, subject, time);
    }

    @Override
    public int hashCode() {
        return Objects.hash(type(), subject(), time());
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof PartitionEvent) {
            final PartitionEvent other = (PartitionEvent) obj;
            return Objects.equals(this.type(), other.type()) &&
                    Objects.equals(this.subject(), other.subject()) &&
                    Objects.equals(this.time(), other.time());
        }
        return false;
    }
}