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package org.onosproject.net.mcast;

import org.onosproject.net.ConnectPoint;
import org.onosproject.store.Store;

import java.util.Set;

/**
 * Entity responsible for storing multicast state information.
 */
public interface McastStore extends Store {

    enum Type {
        /**
         * Adding a route to the mcast rib.
         */
        ADD,

        /**
         * Removing a route from the mcast rib.
         */
        REMOVE
    }

    /**
     * Updates the store with the route information.
     *
     * @param route a multicast route
     * @param operation an operation
     */
    void storeRoute(McastRoute route, Type operation);

    /**
     * Updates the store with source information for the given route. Only one
     * source is permitted. Submitting another source will replace the previous
     * value.
     *
     * @param route a multicast route
     * @param source a source
     */
    void storeSource(McastRoute route, ConnectPoint source);

    /**
     * Updates the store with sink information for a given route. There may be
     * multiple sinks.
     *
     * @param route a multicast route
     * @param sink a sink
     * @param operation an operation
     */
    void storeSink(McastRoute route, ConnectPoint sink, Type operation);

    /**
     * Obtains the source for a multicast route.
     *
     * @param route a multicast route
     * @return a connect point
     */
    ConnectPoint sourceFor(McastRoute route);

    /**
     * Obtains the sinks for a multicast route.
     *
     * @param route a multicast route
     * @return a set of sinks
     */
    Set sinksFor(McastRoute route);

    /**
     * Gets the set of all known multicast routes.
     *
     * @return set of multicast routes
     */
    Set getRoutes();
}