backend/schema/backfills/change_stream_backfill.h

//
// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#ifndef THIRD_PARTY_CLOUD_SPANNER_EMULATOR_BACKEND_SCHEMA_BACKFILLS_CHANGE_STREAM_BACKFILL_H_
#define THIRD_PARTY_CLOUD_SPANNER_EMULATOR_BACKEND_SCHEMA_BACKFILLS_CHANGE_STREAM_BACKFILL_H_

#include "backend/schema/catalog/change_stream.h"
#include "backend/schema/updater/schema_validation_context.h"

namespace google {
namespace spanner {
namespace emulator {
namespace backend {

// Handles backfilling of a newly created change stream partition table and
// change stream data table.
absl::Status BackfillChangeStream(const ChangeStream* change_stream,
                                  const SchemaValidationContext* context);

// Creates a random string to represent a change stream partition token.
// Change stream partition tokens are provided to the user when they execute
// an initial change stream query. They will then use the partition token
// to execute a partitioned change stream query to receive data.
std::string CreatePartitionTokenString();

}  // namespace backend
}  // namespace emulator
}  // namespace spanner
}  // namespace google

#endif  // THIRD_PARTY_CLOUD_SPANNER_EMULATOR_BACKEND_SCHEMA_BACKFILLS_CHANGE_STREAM_BACKFILL_H_