statefun-flink/statefun-flink-core/src/main/java/org/apache/flink/statefun/flink/core/logger/UnboundedFeedbackLoggerFactory.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.flink.statefun.flink.core.logger;

import java.util.Objects;
import java.util.function.Supplier;
import java.util.function.ToIntFunction;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.statefun.flink.core.di.Inject;
import org.apache.flink.statefun.flink.core.di.Label;

public final class UnboundedFeedbackLoggerFactory<T> {
  private final Supplier<KeyGroupStream<T>> supplier;
  private final ToIntFunction<T> keyGroupAssigner;
  private final CheckpointedStreamOperations checkpointedStreamOperations;
  private final TypeSerializer<T> serializer;

  @Inject
  public UnboundedFeedbackLoggerFactory(
      @Label("key-group-supplier") Supplier<KeyGroupStream<T>> supplier,
      @Label("key-group-assigner") ToIntFunction<T> keyGroupAssigner,
      @Label("checkpoint-stream-ops") CheckpointedStreamOperations ops,
      @Label("envelope-serializer") TypeSerializer<T> serializer) {
    this.supplier = Objects.requireNonNull(supplier);
    this.keyGroupAssigner = Objects.requireNonNull(keyGroupAssigner);
    this.serializer = Objects.requireNonNull(serializer);
    this.checkpointedStreamOperations = Objects.requireNonNull(ops);
  }

  public UnboundedFeedbackLogger<T> create() {
    return new UnboundedFeedbackLogger<>(
        supplier, keyGroupAssigner, checkpointedStreamOperations, serializer);
  }
}