96 lines
2.8 KiB
Java
96 lines
2.8 KiB
Java
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package eu.dnetlib.dhp.oa.graph.hostedbymap;
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import java.io.*;
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import java.nio.charset.Charset;
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import java.nio.charset.StandardCharsets;
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import java.util.Objects;
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import java.util.Optional;
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import org.apache.commons.io.IOUtils;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FileSystem;
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import org.apache.hadoop.fs.Path;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import eu.dnetlib.dhp.application.ArgumentApplicationParser;
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import eu.dnetlib.dhp.common.collection.CollectorException;
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import eu.dnetlib.dhp.common.collection.GetCSV;
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import eu.dnetlib.dhp.common.collection.HttpConnector2;
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public class DownloadCSV {
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private static final Logger log = LoggerFactory.getLogger(DownloadCSV.class);
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public static final char DEFAULT_DELIMITER = ';';
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public static void main(final String[] args) throws Exception {
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final ArgumentApplicationParser parser = new ArgumentApplicationParser(
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IOUtils
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.toString(
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Objects
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.requireNonNull(
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DownloadCSV.class
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.getResourceAsStream(
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"/eu/dnetlib/dhp/oa/graph/hostedbymap/download_csv_parameters.json"))));
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parser.parseArgument(args);
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final String fileURL = parser.get("fileURL");
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log.info("fileURL {}", fileURL);
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final String workingPath = parser.get("workingPath");
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log.info("workingPath {}", workingPath);
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final String outputFile = parser.get("outputFile");
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log.info("outputFile {}", outputFile);
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final String hdfsNameNode = parser.get("hdfsNameNode");
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log.info("hdfsNameNode {}", hdfsNameNode);
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final String classForName = parser.get("classForName");
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log.info("classForName {}", classForName);
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final char delimiter = Optional
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.ofNullable(parser.get("delimiter"))
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.map(s -> s.charAt(0))
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.orElse(DEFAULT_DELIMITER);
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log.info("delimiter {}", delimiter);
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Configuration conf = new Configuration();
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conf.set("fs.defaultFS", hdfsNameNode);
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FileSystem fileSystem = FileSystem.get(conf);
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new DownloadCSV().doDownload(fileURL, workingPath, outputFile, classForName, delimiter, fileSystem);
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}
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protected void doDownload(String fileURL, String workingPath, String outputFile, String classForName,
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char delimiter, FileSystem fs)
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throws IOException, ClassNotFoundException, CollectorException {
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final HttpConnector2 connector2 = new HttpConnector2();
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final Path path = new Path(workingPath + "/replaced.csv");
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try (BufferedReader in = new BufferedReader(
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new InputStreamReader(connector2.getInputSourceAsStream(fileURL)))) {
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try (PrintWriter writer = new PrintWriter(
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new OutputStreamWriter(fs.create(path, true), StandardCharsets.UTF_8))) {
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String line;
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while ((line = in.readLine()) != null) {
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writer.println(line.replace("\\\"", "\""));
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}
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}
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}
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try (InputStreamReader reader = new InputStreamReader(fs.open(path))) {
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GetCSV.getCsv(fs, reader, outputFile, classForName, delimiter);
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}
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}
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}
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