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55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
#pragma once
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#include <DB/IO/WriteBuffer.h>
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#include <DB/IO/HashingWriteBuffer.h>
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#include <Poco/Net/HTTPClientSession.h>
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namespace DB
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{
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namespace
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{
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constexpr auto DEFAULT_REMOTE_WRITE_BUFFER_CONNECTION_TIMEOUT = 1;
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constexpr auto DEFAULT_REMOTE_WRITE_BUFFER_RECEIVE_TIMEOUT = 1800;
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constexpr auto DEFAULT_REMOTE_WRITE_BUFFER_SEND_TIMEOUT = 1800;
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}
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/** Позволяет писать файл на удалённый сервер.
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*/
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class InterserverWriteBuffer final : public WriteBuffer
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{
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public:
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InterserverWriteBuffer(const std::string & host_, int port_,
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const std::string & endpoint_,
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const std::string & path_,
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bool compress_ = false,
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size_t buffer_size_ = DBMS_DEFAULT_BUFFER_SIZE,
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const Poco::Timespan & connection_timeout = Poco::Timespan(DEFAULT_REMOTE_WRITE_BUFFER_CONNECTION_TIMEOUT, 0),
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const Poco::Timespan & send_timeout = Poco::Timespan(DEFAULT_REMOTE_WRITE_BUFFER_SEND_TIMEOUT, 0),
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const Poco::Timespan & receive_timeout = Poco::Timespan(DEFAULT_REMOTE_WRITE_BUFFER_RECEIVE_TIMEOUT, 0));
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~InterserverWriteBuffer();
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void finalize();
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void cancel();
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private:
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void nextImpl() override;
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private:
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std::string host;
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int port;
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std::string path;
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Poco::Net::HTTPClientSession session;
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std::ostream * ostr; /// этим владеет session
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std::unique_ptr<WriteBuffer> impl;
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/// Отправили все данные и переименовали файл
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bool finalized = false;
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};
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}
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