query_processor.hh

/*
 * Copyright (C) 2019 pengjian.uestc @ gmail.com
 */

/*
 * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
 */

#pragma once

#include <seastar/core/sharded.hh>
#include <seastar/core/shared_ptr.hh>
#include <seastar/core/gate.hh>
#include <seastar/core/metrics_registration.hh>

#include "data_dictionary/data_dictionary.hh"

class service_permit;

namespace service {
class storage_proxy;
}

namespace redis {

class redis_options;
struct request;
struct reply;
class redis_message;

class query_processor {
    service::storage_proxy& _proxy;
    data_dictionary::database _db;
    seastar::metrics::metric_groups _metrics;
    seastar::gate _pending_command_gate;
public:
    query_processor(service::storage_proxy& proxy, data_dictionary::database db);

    ~query_processor();

    data_dictionary::database db() {
        return _db;
    }

    service::storage_proxy& proxy() {
        return _proxy;
    }

    seastar::future<redis_message> process(request&&, redis_options&, service_permit);

    seastar::future<> start();
    seastar::future<> stop();
};

}