2020-04-20 09:25:40 +02:00
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package eu.dnetlib.orciddsmanager;
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2020-04-17 18:52:39 +02:00
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.net.URI;
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import java.util.Properties;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FSDataInputStream;
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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.apache.log4j.Logger;
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public class OrcidDSManager {
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private static final Logger logger = Logger.getLogger(OrcidDSManager.class);
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private String hdfsServerUri;
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private String hadoopUsername;
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private String hdfsOrcidDefaultPath;
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private String summariesFileNameTarGz;
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private String outputAuthorsPath;
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public static void main(String[] args) {
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logger.info("OrcidDSManager started");
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OrcidDSManager orcidDSManager = new OrcidDSManager();
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try {
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orcidDSManager.initGARRProperties();
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orcidDSManager.generateAuthors();
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} catch (Exception e) {
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logger.error("Generating authors data: "+e.getMessage());
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}
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}
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public void generateAuthors() throws Exception {
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Configuration conf = initConfigurationObject();
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FileSystem fs = initFileSystemObject(conf);
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String tarGzUri = hdfsServerUri.concat(hdfsOrcidDefaultPath).concat(summariesFileNameTarGz);
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logger.info("Started parsing "+tarGzUri);
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Path outputPath = new Path(hdfsServerUri.concat(hdfsOrcidDefaultPath).concat(outputAuthorsPath).concat(Long.toString(System.currentTimeMillis())).concat("/authors_part"));
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SummariesDecompressor.parseGzSummaries(conf, tarGzUri, outputPath);
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}
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private Configuration initConfigurationObject() {
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// ====== Init HDFS File System Object
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Configuration conf = new Configuration();
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// Set FileSystem URI
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conf.set("fs.defaultFS", hdfsServerUri.concat(hdfsOrcidDefaultPath));
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// Because of Maven
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conf.set("fs.hdfs.impl", org.apache.hadoop.hdfs.DistributedFileSystem.class.getName());
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conf.set("fs.file.impl", org.apache.hadoop.fs.LocalFileSystem.class.getName());
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// Set HADOOP user
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System.setProperty("HADOOP_USER_NAME", hadoopUsername);
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System.setProperty("hadoop.home.dir", "/");
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return conf;
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}
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private FileSystem initFileSystemObject(Configuration conf) {
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//Get the filesystem - HDFS
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FileSystem fs = null;
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try {
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fs = FileSystem.get(URI.create(hdfsServerUri.concat(hdfsOrcidDefaultPath)), conf);
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} catch (IOException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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return fs;
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}
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private void loadProperties() throws FileNotFoundException, IOException {
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Properties appProps = new Properties();
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ClassLoader classLoader = ClassLoader.getSystemClassLoader();
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appProps.load(classLoader.getResourceAsStream("orciddsmanager/props/app.properties"));
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hdfsServerUri = appProps.getProperty("hdfs.server.uri");
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hadoopUsername = appProps.getProperty("hdfs.hadoopusername");
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hdfsOrcidDefaultPath = appProps.getProperty("hdfs.orcid.defaultpath");
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summariesFileNameTarGz = appProps.getProperty("hdfs.orcid.summariesfilename.tar.gz");
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outputAuthorsPath = appProps.getProperty("hdfs.orcid.output.authorspath");
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}
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private void initDefaultProperties() throws FileNotFoundException, IOException {
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hdfsServerUri = "hdfs://localhost:9000";
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hadoopUsername = "enrico.ottonello";
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hdfsOrcidDefaultPath = "/user/enrico.ottonello/orcid/";
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summariesFileNameTarGz = "ORCID_2019_summaries.tar.gz";
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outputAuthorsPath = "output/";
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}
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private void initGARRProperties() throws FileNotFoundException, IOException {
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hdfsServerUri = "hdfs://hadoop-rm1.garr-pa1.d4science.org:8020";
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hadoopUsername = "root";
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hdfsOrcidDefaultPath = "/data/orcid_summaries/";
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summariesFileNameTarGz = "ORCID_2019_summaries.tar.gz";
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outputAuthorsPath = "output/";
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}
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}
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