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package eu.dnetlib.data.mapreduce.hbase.statsExport.exporters;
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import eu.dnetlib.data.mapreduce.hbase.statsExport.utils.ContextTransformer;
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import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpException;
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import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpService;
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import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;
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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.apache.log4j.Logger;
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import java.util.ArrayList;
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import java.util.List;
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public class ContextExporter {
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private ContextTransformer contextTransformer = new ContextTransformer();
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private String outputPath;
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private Logger log = Logger.getLogger(this.getClass());
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private ArrayList<String> context = new ArrayList<String>();
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private ArrayList<String> category = new ArrayList<String>();
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private ArrayList<String> concept = new ArrayList<String>();
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public ContextExporter(String outputPath, String contextMap, boolean readFromUrl) throws Exception {
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if (!outputPath.endsWith("/")) {
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outputPath += "/";
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}
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this.outputPath = outputPath;
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if (readFromUrl) {
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readFromUrl(contextMap);
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} else {
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readFromBuffer(contextMap);
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}
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}
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public void readFromUrl(String url) throws Exception {
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List<String> concepts = getContextResouces(url);
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log.info("Returned concept " + concepts.size()
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);
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for (String data : concepts) {
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log.info("++++++++++++++ Transforming concept data ");
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String res = contextTransformer.transformXSL(data);
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processData(res);
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}
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writeData(this.context, "context");
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writeData(this.category, "category");
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writeData(this.concept, "concept");
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}
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private void readFromBuffer(String contextMap) throws Exception {
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if (contextMap == null || contextMap.isEmpty()) {
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log.error("Context Resources file is empty.");
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throw new Exception("Context Resources file is empty.");
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}
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String data = contextTransformer.transformXSL(contextMap);
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log.info(data);
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processData(data);
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}
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private List<String> getContextResouces(String url) throws ISLookUpException {
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ISLookUpService lookUpService;
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JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
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factory.setServiceClass(ISLookUpService.class);
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factory.setAddress(url);
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lookUpService = (ISLookUpService) factory.create();
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// for $x in //RESOURCE_PROFILE[.//RESOURCE_TYPE/@value='ContextDSResourceType']
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// [.//RESOURCE_KIND/@value='ContextDSResources'] return $x
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return lookUpService.quickSearchProfile("//RESOURCE_PROFILE[.//RESOURCE_TYPE/@value='ContextDSResourceType'][.//RESOURCE_KIND/@value='ContextDSResources']");
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}
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private void writeData(ArrayList<String> dataList, String listName) throws Exception {
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if (dataList.isEmpty()) return;
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log.info(listName + " size " + dataList.size());
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String data = new String();
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for (int i = 0; i < dataList.size(); i++) {
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data += dataList.get(i);
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}
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data = data.substring(0, data.lastIndexOf("\n"));
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flushString(data, outputPath + listName);
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}
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private void processData(String data) throws Exception {
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try {
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String[] split = data.split("COPY\n");
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if (split.length > 0) {
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context.add(split[0]);
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}
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if (split.length > 1) {
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category.add(split[1]);
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}
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if (split.length > 2) {
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concept.add(split[2]);
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}
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} catch (Exception e) {
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String msg = " Unable to create file with context, " + "concept and category values in output path " + outputPath + ". Reason: ";
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log.error(msg);
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throw new Exception(msg, e);
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}
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}
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private void flushString(String data, String destination) throws Exception {
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FSDataOutputStream fin = null;
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try {
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// log.info("***********************Writing data:***********************\n" + data);
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// log.info("*********************** data:***********************\n");
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FileSystem fs = FileSystem.get(new Configuration());
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fin = fs.create(new Path(destination), true);
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fin.write(data.getBytes());
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} catch (Exception e) {
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log.error("Failed to write exported data to a file : ", e);
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throw new Exception("Failed to write exported data to a file : " + e.toString(), e);
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} finally {
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fin.close();
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}
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}
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public String getOutputPath() {
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return outputPath;
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}
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public void setOutputPath(String outputPath) {
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this.outputPath = outputPath;
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}
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}
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