content: /*
   * Copyright (C) 2020 ActiveJ 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.
   */
  
  package io.activej.dataflow.dataset.impl;
  
  import io.activej.common.annotation.ExposedInternals;
  import io.activej.dataflow.dataset.Dataset;
  import io.activej.dataflow.graph.DataflowContext;
  import io.activej.dataflow.graph.DataflowGraph;
  import io.activej.dataflow.graph.Partition;
  import io.activej.dataflow.graph.StreamId;
  import io.activej.dataflow.node.Node;
  import io.activej.dataflow.node.Nodes;
  
  import java.util.List;
  
  @ExposedInternals
  public final class ConsumerOfId<T> extends Dataset<T> {
  	public final String id;
  	public final Dataset<T> input;
  
  	public ConsumerOfId(Dataset<T> input, String id) {
  		super(input.streamSchema());
  		this.id = id;
  		this.input = input;
  	}
  
  	@Override
  	public List<StreamId> channels(DataflowContext context) {
  		DataflowGraph graph = context.getGraph();
  		List<StreamId> streamIds = input.channels(context);
  		int index = context.generateNodeIndex();
  		for (int i = 0, streamIdsSize = streamIds.size(); i < streamIdsSize; i++) {
  			StreamId streamId = streamIds.get(i);
  			Partition partition = graph.getPartition(streamId);
  			Node node = Nodes.consumerOfId(index, id, i, streamIdsSize, streamId);
  			graph.addNode(partition, node);
  		}
  		return List.of();
  	}
  }
  