StorageAccountProxy.h

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#ifndef STORAGE_FACTORY_STORAGE_ACCOUNT_PROXY_H
#define STORAGE_FACTORY_STORAGE_ACCOUNT_PROXY_H

#include "Utilities/StorageFactory/interface/StorageAccount.h"
#include "Utilities/StorageFactory/interface/Storage.h"
#include "FWCore/Utilities/interface/get_underlying_safe.h"
#include <string>
#include <memory>

class StorageAccountProxy : public Storage {
public:
  StorageAccountProxy(const std::string &storageClass, std::unique_ptr<Storage> baseStorage);
  ~StorageAccountProxy(void) override;

  using Storage::read;
  using Storage::write;

  bool prefetch(const IOPosBuffer *what, IOSize n) override;
  IOSize read(void *into, IOSize n) override;
  IOSize read(void *into, IOSize n, IOOffset pos) override;
  IOSize readv(IOBuffer *into, IOSize n) override;
  IOSize readv(IOPosBuffer *into, IOSize n) override;
  IOSize write(const void *from, IOSize n) override;
  IOSize write(const void *from, IOSize n, IOOffset pos) override;
  IOSize writev(const IOBuffer *from, IOSize n) override;
  IOSize writev(const IOPosBuffer *from, IOSize n) override;

  IOOffset position(IOOffset offset, Relative whence = SET) override;
  void resize(IOOffset size) override;
  void flush(void) override;
  void close(void) override;

protected:
  void releaseStorage() { get_underlying_safe(m_baseStorage).release(); }

  edm::propagate_const<std::unique_ptr<Storage>> m_baseStorage;

  StorageAccount::StorageClassToken m_token;
  StorageAccount::Counter &m_statsRead;
  StorageAccount::Counter &m_statsReadV;
  StorageAccount::Counter &m_statsWrite;
  StorageAccount::Counter &m_statsWriteV;
  StorageAccount::Counter &m_statsPosition;
  StorageAccount::Counter &m_statsPrefetch;
};

#endif  // STORAGE_FACTORY_STORAGE_ACCOUNT_PROXY_H