101 lines
3.2 KiB
Java
101 lines
3.2 KiB
Java
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package eu.dnetlib.dhp.collection.worker;
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import static eu.dnetlib.dhp.aggregation.common.AggregationConstants.SEQUENCE_FILE_NAME;
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import static eu.dnetlib.dhp.application.ApplicationUtils.*;
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import java.io.IOException;
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import java.util.concurrent.atomic.AtomicInteger;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.io.IntWritable;
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import org.apache.hadoop.io.SequenceFile;
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import org.apache.hadoop.io.Text;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import eu.dnetlib.data.mdstore.manager.common.model.MDStoreVersion;
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import eu.dnetlib.dhp.collection.plugin.CollectorPlugin;
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import eu.dnetlib.dhp.collection.worker.utils.CollectorPluginFactory;
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import eu.dnetlib.dhp.collection.worker.utils.CollectorPluginReport;
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import eu.dnetlib.dhp.collection.worker.utils.HttpClientParams;
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import eu.dnetlib.dhp.collection.worker.utils.UnknownCollectorPluginException;
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import eu.dnetlib.dhp.collector.worker.model.ApiDescriptor;
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import eu.dnetlib.dhp.message.MessageSender;
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public class CollectorWorker {
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private static final Logger log = LoggerFactory.getLogger(CollectorWorker.class);
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private final ApiDescriptor api;
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private final Configuration conf;
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private final MDStoreVersion mdStoreVersion;
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private final HttpClientParams clientParams;
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private final CollectorPluginReport report;
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private final MessageSender messageSender;
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public CollectorWorker(
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final ApiDescriptor api,
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final Configuration conf,
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final MDStoreVersion mdStoreVersion,
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final HttpClientParams clientParams,
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final MessageSender messageSender,
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final CollectorPluginReport report) {
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this.api = api;
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this.conf = conf;
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this.mdStoreVersion = mdStoreVersion;
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this.clientParams = clientParams;
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this.messageSender = messageSender;
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this.report = report;
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}
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public void collect() throws UnknownCollectorPluginException, CollectorException, IOException {
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final String outputPath = mdStoreVersion.getHdfsPath() + SEQUENCE_FILE_NAME;
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log.info("outputPath path is {}", outputPath);
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final CollectorPlugin plugin = CollectorPluginFactory.getPluginByProtocol(clientParams, api.getProtocol());
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final AtomicInteger counter = new AtomicInteger(0);
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try (SequenceFile.Writer writer = SequenceFile
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.createWriter(
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conf,
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SequenceFile.Writer.file(new Path(outputPath)),
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SequenceFile.Writer.keyClass(IntWritable.class),
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SequenceFile.Writer.valueClass(Text.class))) {
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final IntWritable key = new IntWritable(counter.get());
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final Text value = new Text();
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plugin
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.collect(api, report)
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.forEach(
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content -> {
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key.set(counter.getAndIncrement());
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if (counter.get() % 500 == 0)
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messageSender.sendMessage(counter.longValue(), null);
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value.set(content);
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try {
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writer.append(key, value);
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} catch (Throwable e) {
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report.put(e.getClass().getName(), e.getMessage());
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log.warn("setting report to failed");
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report.setSuccess(false);
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throw new RuntimeException(e);
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}
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});
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} catch (Throwable e) {
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report.put(e.getClass().getName(), e.getMessage());
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log.warn("setting report to failed");
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report.setSuccess(false);
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} finally {
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messageSender.sendMessage(counter.longValue(), counter.longValue());
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}
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}
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}
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