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package eu.dnetlib.index.solr;
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import java.io.IOException;
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import java.io.StringReader;
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import java.util.HashMap;
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import java.util.Map;
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import eu.dnetlib.clients.index.model.Any.ValueType;
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import eu.dnetlib.clients.index.query.IndexQueryFactory;
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import eu.dnetlib.utils.MetadataReference;
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import eu.dnetlib.index.AbstractBackendDescriptor;
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import eu.dnetlib.index.IndexCollection;
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import eu.dnetlib.index.IndexServerDAO;
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import eu.dnetlib.cql.CqlValueTransformerMap;
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import eu.dnetlib.index.feed.DocumentMapperFactory;
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import eu.dnetlib.index.query.SolrIndexQueryFactory;
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import eu.dnetlib.index.query.SolrIndexQueryResponseFactory;
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import eu.dnetlib.index.solr.cql.SolrTypeBasedCqlValueTransformerMapFactory;
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import eu.dnetlib.index.solr.feed.SolrDocumentMapperFactory;
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import eu.dnetlib.index.utils.IndexConfigFactory;
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import eu.dnetlib.index.utils.RemoteSolrAdministrator;
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import eu.dnetlib.index.utils.ZkUtils;
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import eu.dnetlib.rmi.provision.IndexServiceException;
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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.apache.solr.client.solrj.SolrServerException;
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import org.apache.solr.client.solrj.impl.CloudSolrClient;
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import org.dom4j.Document;
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import org.dom4j.DocumentException;
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import org.dom4j.io.SAXReader;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Required;
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/**
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* The Class SolrIndexServerDAO.
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*/
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public class SolrIndexServerDAO extends AbstractBackendDescriptor implements IndexServerDAO {
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/**
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* The log.
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*/
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private static final Log log = LogFactory.getLog(SolrIndexServerDAO.class); // NOPMD by marko on 11/24/08 5:02 PM
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/**
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* The zk utils.
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*/
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@Autowired
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private ZkUtils zkUtils;
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/**
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* The query response factory.
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*/
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@Autowired
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private SolrIndexQueryResponseFactory queryResponseFactory;
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@Autowired
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private SolrIndexQueryFactory solrIndexQueryFactory;
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/**
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* The solr document mapper factory.
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*/
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@Autowired
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private SolrDocumentMapperFactory solrDocumentMapperFactory;
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/**
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* The solr administrator.
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*/
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private RemoteSolrAdministrator solrAdministrator;
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/**
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* The solr type based cql value transformer map.
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*/
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@Autowired
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private SolrTypeBasedCqlValueTransformerMapFactory tMapFactory;
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/**
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* {@inheritDoc}
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* <p>
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* String)
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*/
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@Override
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public void createIndexCollection(final MetadataReference mdref, final String fields) throws IndexServiceException {
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CloudSolrClient client = null;
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try {
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client = getClient();
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client.connect();
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final Map<String, String> p = getServiceProperties();
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if (!solrAdministrator.indexCollectionExists(mdref.toString(), client, p.get("host"), p.get("port"))) {
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Map<String, String> params = new HashMap<>();
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params.put("numShards", p.get("numShards"));
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params.put("replicationFactor", p.get("replicationFactor"));
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for (IndexConfigFactory.CONFIG_PARAMS param_Name : IndexConfigFactory.CONFIG_PARAMS.values()) {
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params.put(param_Name.toString(), p.get(param_Name.toString()));
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}
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params.put(IndexConfigFactory.CONFIG_PARAMS.indexDataDir.toString(), mdref.toString());
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zkUtils.uploadZookeperConfig(client.getZkStateReader().getZkClient(), mdref.toString(), parse(fields), params, false);
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solrAdministrator.createSolrIndex(p.get("host"), p.get("port"), mdref.toString(), p.get("numShards"), p.get("replicationFactor"),
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mdref.toString());
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}
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client.getZkStateReader().close();
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} catch (Exception e) {
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log.error("Error on creating IndexCollection", e);
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throw new IndexServiceException("Error on creating IndexCollection", e);
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} finally {
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if (client != null) {
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try {
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client.close();
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} catch (IOException e) {
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throw new IndexServiceException("Error while closing client", e);
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}
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}
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}
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}
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@Override
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public void updateIndexCollection(final MetadataReference mdRef, final Document fields) throws IndexServiceException {
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CloudSolrClient client = null;
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try {
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client = getClient();
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client.connect();
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Map<String, String> params = new HashMap<>();
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params.put("numShards", getServiceProperties().get("numShards"));
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params.put("replicationFactor", getServiceProperties().get("replicationFactor"));
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for (IndexConfigFactory.CONFIG_PARAMS param_Name : IndexConfigFactory.CONFIG_PARAMS.values()) {
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params.put(param_Name.toString(), getServiceProperties().get(param_Name.toString()));
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}
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params.put(IndexConfigFactory.CONFIG_PARAMS.indexDataDir.toString(), mdRef.toString());
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zkUtils.uploadZookeperConfig(client.getZkStateReader().getZkClient(), mdRef.toString(), fields, params, true);
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client.getZkStateReader().close();
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client.shutdown();
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solrAdministrator.reloadCollection(getServiceProperties().get("host"), getServiceProperties().get("port"), mdRef.toString());
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} catch (Exception e) {
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log.error("Error on updating IndexCollection", e);
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throw new IndexServiceException("Error on updating IndexCollection", e);
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} finally {
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if (client != null) {
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client.shutdown();
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}
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}
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}
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/**
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* Parses the fields parameter.
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*
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* @param fields the fields
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* @return the document
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* @throws IndexServiceException the index service exception
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*/
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private Document parse(final String fields) throws IndexServiceException {
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try {
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return new SAXReader().read(new StringReader(fields));
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} catch (DocumentException e) {
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throw new IndexServiceException("unable to parse fields: " + fields, e);
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public IndexCollection getIndexCollection(final MetadataReference mdref) throws IndexServiceException {
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CloudSolrClient newServer = getClient(mdref);
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try {
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newServer.ping();
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} catch (SolrServerException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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return new SolrIndexCollection(newServer);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public Map<String, ValueType> getSchema(final MetadataReference mdRef) throws IndexServiceException {
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CloudSolrClient server = getClient(mdRef);
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Map<String, ValueType> fields = solrAdministrator.getFieldNamesAndTypes(mdRef.toString(), server);
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try {
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server.close();
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} catch (IOException e) {
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throw new IndexServiceException("Error on closing client");
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}
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return fields;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public CqlValueTransformerMap getCqlValueTransformerMap(final MetadataReference mdRef) throws IndexServiceException {
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return tMapFactory.getIt(getSchema(mdRef));
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public DocumentMapperFactory getDocumentMapperFactory() throws IndexServiceException {
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return solrDocumentMapperFactory;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void shutdown(final MetadataReference mdRef) throws IndexServiceException {
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try {
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getClient(mdRef).close();
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} catch (IOException e) {
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throw new IndexServiceException("Error on closing client", e);
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}
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}
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/**
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* Gets a server with the default collection set according to the given mdRef.
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*
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* @param mdRef the md ref
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* @return a server instance
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* @throws IndexServiceException the index service exception
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*/
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private CloudSolrClient getClient(final MetadataReference mdRef) throws IndexServiceException {
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CloudSolrClient client = getClient();
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client.setDefaultCollection(mdRef.toString());
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return client;
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}
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/**
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* Gets the server.
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*
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* @return a server instance
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*/
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private CloudSolrClient getClient() {
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String address = getEndpoint().get(ADDRESS);
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log.info("connecting to address: " + address);
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return new CloudSolrClient(address);
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}
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/**
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* Gets the solr administrator.
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*
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* @return the solrAdministrator
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*/
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public RemoteSolrAdministrator getSolrAdministrator() {
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return solrAdministrator;
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}
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/**
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* Sets the solr administrator.
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*
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* @param solrAdministrator the solrAdministrator to set
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*/
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@Required
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public void setSolrAdministrator(final RemoteSolrAdministrator solrAdministrator) {
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this.solrAdministrator = solrAdministrator;
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}
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@Override
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public IndexQueryFactory getIndexQueryFactory() {
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return solrIndexQueryFactory;
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}
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}
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