D-Net

package eu.dnetlib.openaire.directindex.api;

import java.io.IOException;

import java.util.List;

import java.util.Map;

import javax.annotation.Resource;

import com.google.common.collect.Lists;

import com.google.common.collect.Maps;

import eu.dnetlib.data.index.CloudIndexClient;

import eu.dnetlib.data.index.CloudIndexClientException;

import eu.dnetlib.data.index.CloudIndexClientFactory;

import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpException;

import eu.dnetlib.enabling.locators.UniqueServiceLocator;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.core.io.ClassPathResource;

public class IndexClientMap {

    private static final Log log = LogFactory.getLog(IndexClientMap.class);

    @Value(value = "${openaire.api.directindex.findSolrIndexUrl.xquery}")

    private ClassPathResource findSolrIndexUrl;

    @Value(value = "${openaire.api.directindex.findIndexDsInfo.xquery}")

    private ClassPathResource findIndexDsInfo;

    @Resource

    private UniqueServiceLocator serviceLocator;

    @Autowired

    private IndexDSRetriever indexDSRetriever;

    private Map<IndexDsInfo, CloudIndexClient> clients = Maps.newHashMap();

    public Map<IndexDsInfo, CloudIndexClient> getClients() throws DirecIndexApiException {

        final List<IndexDsInfo> idxList = Lists.newArrayList();

        try {

            idxList.addAll(indexDSRetriever.calculateCurrentIndexDsInfo());

        } catch (Throwable e) {

            log.warn("Unable to retrieve IndexDS data from the IS", e);

        }

        if (idxList == null || idxList.isEmpty()) {

            throw new DirecIndexApiException("cannot create index: no public Search Service found");

        }

        if (idxList.size() > 1) {

            log.warn("found more than 1 public search service");

        }

        for(IndexDsInfo i : idxList) {

            if (!clients.containsKey(i)) {

                try {

                    clients.put(i, CloudIndexClientFactory.newIndexClient(i.getIndexBaseUrl(), i.getColl(), false));

                } catch (Throwable e) {

                    log.warn("Unable to create index client", e);

                }

            }

        }

        return clients;

    }

}