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Adapter for persistence implementations based on key-value stores

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// Copyright 2015-2024 Nstream, inc.
//
// 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.

package nstream.persist.kv.commit;

/**
 * A predicate that is called each time more data is scheduled to be pushed to the database.
 */
@FunctionalInterface
public interface CommitPredicate {

  /**
   * Decide if data should be committed to the database.
   *
   * @param commitSizeBytes The current total size of data to be committed, in bytes.
   * @return Whether a commit should be triggered.
   */
  boolean triggerCommit(long commitSizeBytes);

}