exceptions.hpp

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#pragma once
 
/// @file userver/cache/exceptions.hpp
/// @brief Exceptions thrown by components::CachingComponentBase
 
#include <stdexcept>
#include <string>
#include <string_view>
 
USERVER_NAMESPACE_BEGIN
 
namespace cache {
 
/// Thrown by components::CachingComponentBase::Get if the cache is empty and
/// `MayReturnNull` returns `false` (as by default).
class EmptyCacheError final : public std::runtime_error {
 public:
  explicit EmptyCacheError(std::string_view cache_name);
};
 
/// Thrown by components::CachingComponentBase::PreAssignCheck when the new
/// value does not pass the check.
class DataError : public std::runtime_error {
  using std::runtime_error::runtime_error;
};
 
class EmptyDataError final : public DataError {
 public:
  explicit EmptyDataError(std::string_view cache_name);
};
 
}  // namespace cache
 
USERVER_NAMESPACE_END