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package eu.dnetlib.datasource.publisher.clients;
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import java.util.List;
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import java.util.Queue;
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import java.util.concurrent.*;
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import javax.annotation.Resource;
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import com.google.common.util.concurrent.*;
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import eu.dnetlib.datasource.publisher.ApiException;
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import eu.dnetlib.datasource.publisher.clients.utils.IndexDsInfo;
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import eu.dnetlib.datasource.publisher.clients.utils.IndexRecordsInfo;
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import eu.dnetlib.datasource.publisher.model.AggregationInfo;
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import eu.dnetlib.datasource.publisher.model.AggregationStage;
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import eu.dnetlib.datasource.publisher.model.DatasourceResponse;
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import eu.dnetlib.datasource.publisher.model.db.Datasource;
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import eu.dnetlib.datasource.publisher.model.db.SearchInterfacesEntry;
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import eu.dnetlib.datasource.publisher.repository.DatasourceRepository;
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import eu.dnetlib.datasource.publisher.repository.SearchApiRepository;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.data.domain.Pageable;
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import org.springframework.util.concurrent.ListenableFutureCallback;
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/**
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* Created by claudio on 20/10/2016.
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*/
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public class DatasourceInfoRetriever {
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private static final Log log = LogFactory.getLog(DatasourceInfoRetriever.class);
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@Autowired
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private MongoLoggerClient mongoLoggerClient;
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@Autowired
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private DatasourceIndexClient datasourceIndexClient;
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@Autowired
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private DatasourceRepository dsRepository;
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@Autowired
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private SearchApiRepository searchApiRepository;
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@Resource(name = "datasourceIsLookupClient")
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private ISLookupClient isLookupClient;
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private ListeningExecutorService service;
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private final static int WORKERS = 100;
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@Value("${datasource.publisher.timeout}")
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private int timeout = 10;
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public DatasourceInfoRetriever() {
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service = MoreExecutors.listeningDecorator(
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new ScheduledThreadPoolExecutor(WORKERS,
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new ThreadFactoryBuilder().setNameFormat("datasource-info-retriever-%d").build()));
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}
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public List<String> listIds(final Pageable pageable) throws ApiException {
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return dsRepository.findAll(pageable)
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.map(d -> d.getId())
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.getContent();
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}
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public ClientResponse getInfo(final String dsId) {
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final CountDownLatch outerLatch = new CountDownLatch(3);
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final Queue<Throwable> errors = new ConcurrentLinkedQueue<>();
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final DatasourceResponse datasourceResponse = new DatasourceResponse();
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Futures.addCallback(getAggregationHistory(dsId), new FutureCallback<List<AggregationInfo>>() {
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public void onSuccess(List<AggregationInfo> info) {
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setAggregationHistory(datasourceResponse, info);
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outerLatch.countDown();
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}
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public void onFailure(Throwable e) {
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errors.offer(e);
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outerLatch.countDown();
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}
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});
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dsRepository.findOneById(dsId).addCallback(new ListenableFutureCallback<Datasource>() {
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@Override
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public void onSuccess(final Datasource datasource) {
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datasourceResponse.setDatasource(datasource);
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outerLatch.countDown();
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}
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@Override
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public void onFailure(final Throwable e) {
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errors.offer(e);
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outerLatch.countDown();
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}
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});
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Futures.addCallback(calculateCurrentIndexDsInfo(), new FutureCallback<IndexDsInfo>() {
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public void onSuccess(final IndexDsInfo info) {
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final CountDownLatch innerLatch = new CountDownLatch(1);
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Futures.addCallback(getIndexInfo(dsId, info), new FutureCallback<IndexRecordsInfo>() {
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public void onSuccess(IndexRecordsInfo info) {
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datasourceResponse.setIndexRecords(info.getCount()).setLastIndexingDate(info.getDate());
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innerLatch.countDown();
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}
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public void onFailure(Throwable e) {
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errors.offer(e);
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innerLatch.countDown();
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}
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});
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waitLatch(innerLatch, errors, timeout);
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outerLatch.countDown();
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}
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public void onFailure(final Throwable e) {
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errors.offer(e);
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outerLatch.countDown();
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}
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});
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waitLatch(outerLatch, errors, timeout);
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/*
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if (!errors.isEmpty()) {
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datasourceResponse.getResponseHeader().setError(Joiner.on("\n").skipNulls().join(errors.stream().map(e -> e.getMessage()).collect(Collectors.toList())));
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log.error(Joiner.on("\n").skipNulls().join(errors.stream().map(e -> ExceptionUtils.getFullStackTrace(e)).collect(Collectors.toList())));
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}
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*/
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return new ClientResponse().datasourceInfo(datasourceResponse).errors(errors);
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}
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public List<SearchInterfacesEntry> searchInterface(final String field, final String value) {
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switch (field) {
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case "__SEARCH__":
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return searchApiRepository
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.findByRepoidContainingOrRepoNameContainingOrAlternativeNameContainingOrRepoPrefixContainingOrRepoOrganizationContainingAllIgnoreCase(
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value, value, value, value, value);
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case "country":
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break;
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case "type":
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break;
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case "protocol":
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break;
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case "compliance":
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break;
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case "active":
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break;
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default:
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throw new IllegalArgumentException("");
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}
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return null;
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}
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private ListenableFuture<IndexDsInfo> calculateCurrentIndexDsInfo() {
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return service.submit(() -> isLookupClient.calculateCurrentIndexDsInfo());
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}
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private ListenableFuture<IndexRecordsInfo> getIndexInfo(final String dsId, final IndexDsInfo info) {
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return service.submit(() -> datasourceIndexClient.getIndexInfo(dsId, info));
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}
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private ListenableFuture<List<AggregationInfo>> getAggregationHistory(final String dsId) {
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return service.submit(() -> mongoLoggerClient.getAggregationHistory(dsId));
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}
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private void setAggregationHistory(DatasourceResponse datasourceResponse, final List<AggregationInfo> info) {
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datasourceResponse.setAggregationHistory(info);
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if (!info.isEmpty()) {
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datasourceResponse
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.setLastCollection(info.stream().filter(a -> AggregationStage.COLLECT.equals(a.getAggregationStage())).findFirst().get())
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.setLastTransformation(info.stream().filter(a -> AggregationStage.TRANSFORM.equals(a.getAggregationStage())).findFirst().get());
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}
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}
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private void waitLatch(final CountDownLatch latch, final Queue<Throwable> errors, final int waitSeconds) {
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try {
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if (!latch.await(waitSeconds, TimeUnit.SECONDS)) {
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errors.offer(new TimeoutException("Waiting for requests to complete has timed out."));
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}
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} catch (final InterruptedException e) {
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errors.offer(e);
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}
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}
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}
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