/*
 * Copyright (c) 2015-2026, WSO2 LLC. (http://www.wso2.com).
 *
 * WSO2 LLC. licenses this file to you 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.wso2.carbon.event.stream.core;

import org.wso2.carbon.databridge.commons.Event;
import org.wso2.carbon.event.stream.core.exception.EventStreamException;
import org.wso2.carbon.event.stream.core.internal.util.EventStreamConstants;

import java.util.List;

/**
 * Represents sources that feed events to the event junction.
 */
public interface EventProducerCallback {

    void sendEvent(Event event);

    void sendEvents(List<Event> events);

    /**
     * Dispatches the event and propagates consumer failures instead of silently dropping them.
     *
     * @param event The event to dispatch.
     * @throws EventStreamException If one or more consumers fail to process the event.
     */
    default void sendEventAndNotifyErrors(Event event) throws EventStreamException {

        throw new EventStreamException(
                EventStreamConstants.ErrorMessage.PRODUCER_PROPAGATION_NOT_IMPLEMENTED.getCode(),
                EventStreamConstants.ErrorMessage.PRODUCER_PROPAGATION_NOT_IMPLEMENTED.getMessage());
    }

}
