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.node.impl;
  
  import io.activej.common.annotation.ExposedInternals;
  import io.activej.dataflow.DataflowClient;
  import io.activej.dataflow.graph.StreamId;
  import io.activej.dataflow.graph.StreamSchema;
  import io.activej.dataflow.graph.Task;
  import io.activej.dataflow.node.AbstractNode;
  import io.activej.dataflow.stats.BinaryNodeStat;
  import io.activej.dataflow.stats.NodeStat;
  import org.jetbrains.annotations.Nullable;
  
  import java.net.InetSocketAddress;
  import java.util.Collection;
  import java.util.List;
  
  /**
   * Represents a node, which downloads data from a given address and stream.
   *
   * @param <T> data items type
   */
  @ExposedInternals
  public final class Download<T> extends AbstractNode {
  	public final StreamSchema<T> streamSchema;
  	public final InetSocketAddress address;
  	public final StreamId streamId;
  	public final StreamId output;
  
  	private BinaryNodeStat stats;
  
  	public Download(int index, StreamSchema<T> streamSchema, InetSocketAddress address, StreamId streamId, StreamId output) {
  		super(index);
  		this.streamSchema = streamSchema;
  		this.address = address;
  		this.streamId = streamId;
  		this.output = output;
  	}
  
  	@Override
  	public Collection<StreamId> getOutputs() {
  		return List.of(output);
  	}
  
  	@Override
  	public void createAndBind(Task task) {
  		task.export(output, task.get(DataflowClient.class).download(address, streamId, streamSchema, stats = new BinaryNodeStat()));
  	}
  
  	@Override
  	public @Nullable NodeStat getStats() {
  		return stats;
  	}
  
  	@Override
  	public String toString() {
  		return "Download{type=" + streamSchema + ", address=" + address + ", streamId=" + streamId + ", output=" + output + '}';
  	}
  }
  