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75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
#pragma once
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#include "config.h"
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#include <base/types.h>
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#include <memory>
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#include <string>
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namespace DB
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{
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class GRPCServer;
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class TCPServer;
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/// Provides an unified interface to access a protocol implementing server
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/// no matter what type it has (HTTPServer, TCPServer, MySQLServer, GRPCServer, ...).
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class ProtocolServerAdapter
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{
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friend class ProtocolServers;
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public:
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ProtocolServerAdapter(ProtocolServerAdapter && src) = default;
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ProtocolServerAdapter & operator =(ProtocolServerAdapter && src) = default;
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ProtocolServerAdapter(const std::string & listen_host_, const char * port_name_, const std::string & description_, std::unique_ptr<TCPServer> tcp_server_);
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#if USE_GRPC && !defined(CLICKHOUSE_KEEPER_STANDALONE_BUILD)
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ProtocolServerAdapter(const std::string & listen_host_, const char * port_name_, const std::string & description_, std::unique_ptr<GRPCServer> grpc_server_);
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#endif
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/// Starts the server. A new thread will be created that waits for and accepts incoming connections.
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void start() { impl->start(); }
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/// Stops the server. No new connections will be accepted.
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void stop() { impl->stop(); }
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bool isStopping() const { return impl->isStopping(); }
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/// Returns the number of currently handled connections.
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size_t currentConnections() const { return impl->currentConnections(); }
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/// Returns the number of current threads.
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size_t currentThreads() const { return impl->currentThreads(); }
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/// Returns the port this server is listening to.
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UInt16 portNumber() const { return impl->portNumber(); }
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const std::string & getListenHost() const { return listen_host; }
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const std::string & getPortName() const { return port_name; }
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const std::string & getDescription() const { return description; }
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private:
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class Impl
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{
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public:
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virtual ~Impl() = default;
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virtual void start() = 0;
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virtual void stop() = 0;
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virtual bool isStopping() const = 0;
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virtual UInt16 portNumber() const = 0;
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virtual size_t currentConnections() const = 0;
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virtual size_t currentThreads() const = 0;
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};
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class TCPServerAdapterImpl;
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class GRPCServerAdapterImpl;
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std::string listen_host;
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std::string port_name;
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std::string description;
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std::unique_ptr<Impl> impl;
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};
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}
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