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63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
#pragma once
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#include <DB/IO/ReadBuffer.h>
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#include <DB/IO/WriteBuffer.h>
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#include <DB/Core/Types.h>
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#include <map>
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#include <Poco/Net/HTMLForm.h>
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namespace DB
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{
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/** Обработчик запросов от других серверов.
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*/
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class InterserverIOEndpoint
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{
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public:
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virtual void processQuery(const Poco::Net::HTMLForm & params, WriteBuffer & out) = 0;
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virtual ~InterserverIOEndpoint() {}
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};
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typedef Poco::SharedPtr<InterserverIOEndpoint> InterserverIOEndpointPtr;
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/** Сюда можно зарегистрировать сервис, обрататывающий запросы от других серверов.
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* Используется для передачи данных в ReplicatedMergeTree.
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*/
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class InterserverIOHandler
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{
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public:
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void addEndpoint(const String & name, InterserverIOEndpointPtr endpoint)
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{
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Poco::ScopedLock<Poco::FastMutex> lock(mutex);
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if (endpoint_map.count(name))
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throw Exception("Duplicate interserver IO endpoint: " + name, ErrorCodes::DUPLICATE_INTERSERVER_IO_ENDPOINT);
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endpoint_map[name] = endpoint;
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}
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void removeEndpoint(const String & name)
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{
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Poco::ScopedLock<Poco::FastMutex> lock(mutex);
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if (!endpoint_map.count(name))
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throw Exception("No interserver IO endpoint named " + name, ErrorCodes::NO_SUCH_INTERSERVER_IO_ENDPOINT);
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endpoint_map.erase(name);
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}
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InterserverIOEndpointPtr getEndpoint(const String & name)
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{
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Poco::ScopedLock<Poco::FastMutex> lock(mutex);
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if (!endpoint_map.count(name))
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throw Exception("No interserver IO endpoint named " + name, ErrorCodes::NO_SUCH_INTERSERVER_IO_ENDPOINT);
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return endpoint_map[name];
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}
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private:
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typedef std::map<String, InterserverIOEndpointPtr> EndpointMap;
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EndpointMap endpoint_map;
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Poco::FastMutex mutex;
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};
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}
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