keyring_writer_service_impl_template.h

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#ifndef KEYRING_WRITER_SERVICE_IMPL_TEMPLATE_INCLUDED
#define KEYRING_WRITER_SERVICE_IMPL_TEMPLATE_INCLUDED
 
#include <functional> /* std::function */
#include <sstream>
 
#include <my_dbug.h>
#include <mysql/components/services/log_builtins.h> /* LogComponentErr */
#include <mysqld_error.h>
 
#include <components/keyrings/common/component_helpers/include/service_requirements.h>
#include <components/keyrings/common/data/data.h>
#include <components/keyrings/common/data/meta.h>
#include <components/keyrings/common/operations/operations.h>
 
namespace keyring_common {
namespace service_implementation {
 
using keyring_common::data::Data;
using keyring_common::meta::Metadata;
using keyring_common::operations::Keyring_operations;
 
/**
  Store data in keyring
 
  @param [in]  data_id            Data Identifier
  @param [in]  auth_id            Authorization ID
  @param [in]  data               Data to be stored
  @param [in]  data_size          Size of data to be stored
  @param [in]  data_type          Type of data
  @param [in]  keyring_operations Reference to the object
                                  that handles cache and backend
  @param [in]  callbacks          Handle to component specific callbacks
 
  @returns status of the operation
    @retval false Success
    @retval true  Failure
*/
 
template <typename Backend, typename Data_extension = data::Data>
bool store_template(
    const char *data_id, const char *auth_id, const unsigned char *data,
    size_t data_size, const char *data_type,
    Keyring_operations<Backend, Data_extension> &keyring_operations,
    Component_callbacks &callbacks) {
  try {
    if (callbacks.keyring_initialized() == false) {
      LogComponentErr(INFORMATION_LEVEL,
                      ER_NOTE_KEYRING_COMPONENT_NOT_INITIALIZED);
      return true;
    }
 
    if (data_id == nullptr || !*data_id) {
      LogComponentErr(INFORMATION_LEVEL,
                      ER_NOTE_KEYRING_COMPONENT_EMPTY_DATA_ID);
      assert(false);
      return true;
    }
 
    if (data_size > keyring_operations.maximum_data_length()) {
      LogComponentErr(INFORMATION_LEVEL,
                      ER_NOTE_KEYRING_COMPONENT_WRITE_MAXIMUM_DATA_LENGTH,
                      keyring_operations.maximum_data_length());
      return true;
    }
 
    Metadata metadata(data_id, auth_id);
    Data data_to_be_stored({reinterpret_cast<const char *>(data), data_size},
                           {data_type, data_type ? strlen(data_type) : 0});
    if (keyring_operations.store(metadata, data_to_be_stored) == true) {
      LogComponentErr(INFORMATION_LEVEL, ER_NOTE_KEYRING_COMPONENT_STORE_FAILED,
                      data_id,
                      (auth_id == nullptr || !*auth_id) ? "NULL" : auth_id);
      return true;
    }
    return false;
  } catch (...) {
    LogComponentErr(ERROR_LEVEL, ER_KEYRING_COMPONENT_EXCEPTION, "store",
                    "keyring_writer");
    return true;
  }
}
 
/**
  Remove data from keyring
 
  @param [in]  data_id             Data Identifier
  @param [in]  auth_id             Authorization ID
  @param [in]  keyring_operations  Reference to the object
                                   that handles cache and backend
  @param [in]  callbacks           Handle to component specific callbacks
 
  @returns status of the operation
    @retval false Success - Key removed successfully or key not present.
    @retval true  Failure
*/
template <typename Backend, typename Data_extension = data::Data>
bool remove_template(
    const char *data_id, const char *auth_id,
    Keyring_operations<Backend, Data_extension> &keyring_operations,
    Component_callbacks &callbacks) {
  try {
    if (callbacks.keyring_initialized() == false) {
      LogComponentErr(INFORMATION_LEVEL,
                      ER_NOTE_KEYRING_COMPONENT_NOT_INITIALIZED);
      return true;
    }
 
    if (data_id == nullptr || !*data_id) {
      LogComponentErr(INFORMATION_LEVEL,
                      ER_NOTE_KEYRING_COMPONENT_EMPTY_DATA_ID);
      assert(false);
      return true;
    }
 
    Metadata metadata(data_id, auth_id);
    if (keyring_operations.erase(metadata) == true) {
      LogComponentErr(INFORMATION_LEVEL,
                      ER_NOTE_KEYRING_COMPONENT_REMOVE_FAILED, data_id,
                      (auth_id == nullptr || !*auth_id) ? "NULL" : auth_id);
      return true;
    }
    return false;
  } catch (...) {
    LogComponentErr(ERROR_LEVEL, ER_KEYRING_COMPONENT_EXCEPTION, "remove",
                    "keyring_writer");
    return true;
  }
}
 
}  // namespace service_implementation
}  // namespace keyring_common
 
#endif  // !KEYRING_WRITER_SERVICE_IMPL_TEMPLATE_INCLUDED