85 lines
2.9 KiB
Java
85 lines
2.9 KiB
Java
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package eu.dnetlib.dhp.oa.graph.dump;
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import java.io.BufferedWriter;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import java.io.Serializable;
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import java.nio.charset.StandardCharsets;
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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.FSDataOutputStream;
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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.dom4j.DocumentException;
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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.enabling.is.lookup.rmi.ISLookUpException;
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/**
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* This class connects with the IS related to the isLookUpUrl got as parameter. It saves the information about the
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* context that will guide the dump of the results. The information saved is a HashMap. The key is the id of a community
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* - research infrastructure/initiative , the value is the label of the research community - research
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* infrastructure/initiative.
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*/
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public class SaveCommunityMap implements Serializable {
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private static final Logger log = LoggerFactory.getLogger(SaveCommunityMap.class);
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private final QueryInformationSystem queryInformationSystem;
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private final Configuration conf;
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private final BufferedWriter writer;
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public SaveCommunityMap(String hdfsPath, String hdfsNameNode, String isLookUpUrl) throws IOException {
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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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Path hdfsWritePath = new Path(hdfsPath);
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FSDataOutputStream fsDataOutputStream = null;
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if (fileSystem.exists(hdfsWritePath)) {
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fileSystem.delete(hdfsWritePath);
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}
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fsDataOutputStream = fileSystem.create(hdfsWritePath);
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queryInformationSystem = new QueryInformationSystem();
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queryInformationSystem.setIsLookUp(Utils.getIsLookUpService(isLookUpUrl));
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writer = new BufferedWriter(new OutputStreamWriter(fsDataOutputStream, StandardCharsets.UTF_8));
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}
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public static void main(String[] args) throws Exception {
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String jsonConfiguration = IOUtils
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.toString(
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SaveCommunityMap.class
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.getResourceAsStream(
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"/eu/dnetlib/dhp/oa/graph/dump/input_cm_parameters.json"));
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final ArgumentApplicationParser parser = new ArgumentApplicationParser(jsonConfiguration);
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parser.parseArgument(args);
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final String nameNode = parser.get("nameNode");
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log.info("nameNode: {}", nameNode);
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final String outputPath = parser.get("outputPath");
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log.info("outputPath: {}", outputPath);
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final String isLookUpUrl = parser.get("isLookUpUrl");
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log.info("isLookUpUrl: {}", isLookUpUrl);
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final SaveCommunityMap scm = new SaveCommunityMap(outputPath, nameNode, isLookUpUrl);
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scm.saveCommunityMap();
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}
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private void saveCommunityMap() throws ISLookUpException, IOException, DocumentException {
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writer.write(Utils.OBJECT_MAPPER.writeValueAsString(queryInformationSystem.getCommunityMap()));
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writer.close();
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}
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}
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