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package eu.dnetlib.data.mdstore.modular.mongodb;
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import java.util.Map;
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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 com.mongodb.BasicDBObject;
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import com.mongodb.BulkUpdateRequestBuilder;
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import com.mongodb.BulkWriteOperation;
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import com.mongodb.BulkWriteRequestBuilder;
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import com.mongodb.DBCollection;
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import com.mongodb.DBObject;
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import com.mongodb.WriteConcern;
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import eu.dnetlib.data.mdstore.modular.RecordParser;
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public class MongoBulkWritesManager {
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private static final Log log = LogFactory.getLog(MongoBulkWritesManager.class);
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private RecordParser recordParser;
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private DBCollection validCollection;
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private BulkWriteOperation validBulk;
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private int validOpCounter;
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private DBCollection discardedCollection;
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private BulkWriteOperation discardedBulk;
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private int discardedOpCounter;
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private int bulkSize;
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private final boolean discardRecords;
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public MongoBulkWritesManager(final DBCollection collection, final DBCollection discardedCollection, final int bulkSize, final RecordParser parser,
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final boolean discardRecords) {
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this.validCollection = collection;
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this.discardedCollection = discardedCollection;
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this.validBulk = collection.initializeUnorderedBulkOperation();
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this.validOpCounter = 0;
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this.discardedBulk = discardedCollection.initializeUnorderedBulkOperation();
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this.discardedOpCounter = 0;
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this.bulkSize = bulkSize;
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this.recordParser = parser;
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this.discardRecords = discardRecords;
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}
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public void insert(final String record) {
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try {
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final Map<String, String> recordProperties = recordParser.parseRecord(record);
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log.debug("found props: " + recordProperties);
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if (recordProperties.containsKey("id")) {
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final DBObject obj = new BasicDBObject();
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final String id = recordProperties.get("id");
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final String originalId = recordProperties.get("originalId");
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obj.put("id", id);
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obj.put("originalId", originalId);
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obj.put("body", record);
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obj.put("timestamp", System.currentTimeMillis());
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final BulkWriteRequestBuilder bulkWriteRequestBuilder = validBulk.find(new BasicDBObject("id", obj.get("id")));
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final BulkUpdateRequestBuilder updateReq = bulkWriteRequestBuilder.upsert();
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updateReq.replaceOne(obj);
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validOpCounter++;
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if (validOpCounter % bulkSize == 0 && validOpCounter != 0) {
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validBulk.execute(WriteConcern.ACKNOWLEDGED);
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validBulk = validCollection.initializeUnorderedBulkOperation();
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}
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} else {
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if (discardRecords) {
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log.debug("parsed record seems invalid");
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discardedBulk.insert(new BasicDBObject("body", record));
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discardedOpCounter++;
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if (discardedOpCounter % bulkSize == 0 && discardedOpCounter != 0) {
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discardedBulk.execute(WriteConcern.ACKNOWLEDGED);
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discardedBulk = discardedCollection.initializeUnorderedBulkOperation();
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}
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}
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}
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} catch (Throwable e) {
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if (discardRecords) {
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log.debug("unhandled exception: " + e.getMessage());
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discardedBulk.insert(new BasicDBObject("body", record));
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discardedOpCounter++;
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if (discardedOpCounter % bulkSize == 0 && discardedOpCounter != 0) {
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discardedBulk.execute(WriteConcern.ACKNOWLEDGED);
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discardedBulk = discardedCollection.initializeUnorderedBulkOperation();
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}
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}
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}
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}
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public void flushBulks() {
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if (validOpCounter != 0) {
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validBulk.execute(WriteConcern.ACKNOWLEDGED);
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validCollection.getDB().command("{fsync:1}");
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}
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if (discardedOpCounter != 0) {
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discardedBulk.execute(WriteConcern.ACKNOWLEDGED);
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discardedCollection.getDB().command("{fsync:1}");
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}
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}
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}
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