/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.
 */

#pragma once

#include <ignite/common/ignite_error.h>
#include <ignite/network/data_buffer.h>

namespace ignite::network {

/**
 * Data sink. Can consume data.
 */
class data_sink {
public:
    // Default.
    virtual ~data_sink() = default;

    /**
     * Send data to specific established connection.
     *
     * @param id Client ID.
     * @param data Data to be sent.
     * @return @c true if connection is present and @c false otherwise.
     *
     * @throw ignite_error on error.
     */
    virtual bool send(uint64_t id, std::vector<std::byte> &&data) = 0;

    /**
     * Closes specified connection if it's established. Connection to the specified address is planned for
     * re-connect. Error is reported to handler.
     *
     * @param id Client ID.
     * @param err Optional error.
     */
    virtual void close(uint64_t id, std::optional<ignite_error> err) = 0;
};

} // namespace ignite::network
