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31 lines
650 B
C++
31 lines
650 B
C++
#pragma once
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#include <Backups/IBackupEntry.h>
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#include <mutex>
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namespace DB
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{
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/// Helper class designed to generate multiple backup entries from one source.
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class IBackupEntriesLazyBatch : public std::enable_shared_from_this<IBackupEntriesLazyBatch>
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{
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public:
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BackupEntries getBackupEntries();
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virtual ~IBackupEntriesLazyBatch();
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protected:
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virtual size_t getSize() const = 0;
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virtual const String & getName(size_t i) const = 0;
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virtual BackupEntries generate() = 0;
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private:
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void generateIfNecessary();
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class BackupEntryFromBatch;
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std::mutex mutex;
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BackupEntries entries;
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bool generated = false;
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};
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}
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