nstream.persist.kv.state.Ser Maven / Gradle / Ivy

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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.state;

import nstream.persist.api.kv.IoResult;
import nstream.persist.api.kv.ValueConsumer;
import swim.codec.Binary;
import swim.recon.Recon;
import swim.structure.Value;

final class Ser {

  private Ser() {

  }

  /**
   * A utility function to write a {@link Value} to recon.
   *
   * @param value The value to write.
   * @return A function that will serialize the value.
   */
  static ValueConsumer writeValue(Value value) {
    if (value == null) {
      throw new NullPointerException("The value to serialize must not be null.");
    }
    return (buffer) -> {
      final var out = Recon.structureWriter().writeValue(Binary.outputBuffer(buffer), value);
      if (out.isDone()) {
        return IoResult.Success;
      } else {
        return IoResult.BufferOverflow;
      }
    };
  }

}