content: /**
   * Copyright 2020 Alibaba Group Holding Limited.
   *
   * <p>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
   *
   * <p>http://www.apache.org/licenses/LICENSE-2.0
   *
   * <p>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 com.alibaba.graphscope.groot.sdk.example;
  
  import com.alibaba.graphscope.groot.sdk.GrootClient;
  import com.alibaba.graphscope.groot.sdk.schema.Vertex;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileReader;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  public class IngestFile {
      public static void main(String[] args) throws IOException {
          String inputFile = args[0];
          String host = args[1];
          int port = Integer.valueOf(args[2]);
          int batchSize = Integer.valueOf(args[3]);
  
          GrootClient client = GrootClient.newBuilder().addHost(host, port).build();
          File file = new File(inputFile);
          String fileName = file.getName();
          String label = fileName.split("_")[0];
          System.out.println(
                  "file ["
                          + inputFile
                          + "] host ["
                          + host
                          + "] port ["
                          + port
                          + "] label ["
                          + label
                          + "]");
          List<String> propertyNames = new ArrayList<>();
          int count = 0;
          long snapshotId = 0;
          try (BufferedReader br = new BufferedReader(new FileReader(file))) {
              String line;
              while ((line = br.readLine()) != null) {
                  if (propertyNames.size() == 0) { // First line
                      for (String item : line.split("\\|")) {
                          propertyNames.add(item);
                      }
                  } else {
                      List<Vertex> vertices = new ArrayList<>();
                      Map<String, String> properties = new HashMap<>();
                      String[] items = line.split("\\|");
                      for (int i = 0; i < items.length; i++) {
                          properties.put(propertyNames.get(i), items[i]);
                      }
                      vertices.add(new Vertex(label, properties));
                      count++;
                      if (count == batchSize) {
                          snapshotId = client.addVertices(vertices);
                          count = 0;
                      }
                  }
              }
          }
          System.out.println("flush snapshotId [" + snapshotId + "]");
          client.remoteFlush(snapshotId);
          System.out.println("done");
      }
  }
  