61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
#pragma once
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#include "../communication/service/IMessageHandler.hh"
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#include "Logger.hh"
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#include "StorageManager.hh"
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#include <memory_resource>
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#include <map>
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namespace logging {
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class LogStorageStreamAgent {
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public:
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enum StreamingContex {
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LOG_STORAGE_PARAMETES,
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READ_RECORDS_BLOCK
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};
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public:
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LogStorageStreamAgent( StorageReadInterface & );
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communication::IMessageHandler * get_context_of( StreamingContex );
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private:
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StorageReadInterface & storage;
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struct LogParameters : communication::IMessageHandler {
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LogStorageStreamAgent & agent;
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struct Responce {
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Logger::Id idx; // Идентификатор журнала записей.
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StorageManager::BlockId n; // Количество блоков записей.
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};
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LogParameters( LogStorageStreamAgent & agent_ ) : agent(agent_) {}
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void handler( communication::IMessageLink * link );
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} log_parameters;
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//!Блок возврашает страницу целиком.
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struct ReadingRecordsBlock : communication::IMessageHandler {
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LogStorageStreamAgent & agent;
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struct Responce {
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StorageManager::prefetch_result operation_result; // Идентификатор блока записей.
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uint16_t length; // Длина блока сообщений
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};
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ReadingRecordsBlock( LogStorageStreamAgent & agent_ ) : agent(agent_) {}
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void handler( communication::IMessageLink * link );
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} reading_records_block;
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};
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}
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