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package com.sample.es.udith; | |
import org.elasticsearch.action.admin.indices.optimize.OptimizeResponse; | |
import org.elasticsearch.action.bulk.BulkRequestBuilder; | |
import org.elasticsearch.action.bulk.BulkResponse; | |
import org.elasticsearch.action.search.SearchResponse; | |
import org.elasticsearch.action.search.SearchType; | |
import org.elasticsearch.client.transport.TransportClient; | |
import org.elasticsearch.common.transport.InetSocketTransportAddress; | |
import org.elasticsearch.common.unit.TimeValue; | |
import org.elasticsearch.index.query.FilterBuilders; | |
import org.elasticsearch.index.query.QueryBuilders; | |
import org.elasticsearch.search.SearchHit; | |
import java.util.Calendar; | |
/** | |
* @author Udith Gunaratna | |
*/ | |
public class ESManager { | |
private final String ES_INDEX; | |
private final String ES_TYPE; | |
private final String ES_TIME_FIELD; | |
private final int EXPIRE_DAYS; | |
private final TransportClient elasticsearch; | |
public ESManager() { | |
ES_INDEX = "my_index"; | |
ES_TYPE = "my_record_type"; | |
ES_TIME_FIELD = "publishTime"; | |
EXPIRE_DAYS = 180; | |
elasticsearch = new TransportClient() | |
.addTransportAddress(new InetSocketTransportAddress("localhost", 9300)); | |
} | |
public void cleanESDocs() { | |
final Calendar calendar = Calendar.getInstance(); | |
calendar.add(Calendar.DATE, -EXPIRE_DAYS); | |
BulkRequestBuilder bulkRequest = elasticsearch.prepareBulk(); | |
SearchResponse scrollResp = elasticsearch.prepareSearch(ES_INDEX).setTypes(ES_TYPE) | |
.setSearchType(SearchType.SCAN) | |
.setScroll(new TimeValue(600000)) | |
.setQuery(QueryBuilders.filteredQuery(QueryBuilders.matchAllQuery(), | |
FilterBuilders.andFilter( | |
FilterBuilders.rangeFilter(ES_TIME_FIELD).to(calendar.getTimeInMillis()) | |
))) | |
.setNoFields() | |
.setSize(100).execute().actionGet(); | |
while (true) { | |
for (SearchHit hit : scrollResp.getHits().getHits()) { | |
bulkRequest.add(elasticsearch.prepareDelete() | |
.setIndex(ES_INDEX) | |
.setType(ES_TYPE) | |
.setId(hit.getId())); | |
} | |
scrollResp = elasticsearch.prepareSearchScroll(scrollResp.getScrollId()) | |
.setScroll(new TimeValue(600000)) | |
.execute().actionGet(); | |
if (scrollResp.getHits().getHits().length == 0) { | |
break; | |
} | |
} | |
if ((bulkRequest != null) && (!bulkRequest.request().requests().isEmpty())) { | |
BulkResponse bulkResponse = bulkRequest.execute().actionGet(); | |
if (bulkResponse.hasFailures()) { | |
System.out.println("Elasticsearch cleaning failed"); | |
} else { | |
System.out.println("Elasticsearch cleaning finished deleting " + | |
bulkResponse.getItems().length + " documents"); | |
optimizeIndex(); | |
} | |
} else { | |
System.out.println("Elasticsearch cleaning finished without deleting any documents"); | |
} | |
} | |
private void optimizeIndex() { | |
OptimizeResponse optimizeResponse = elasticsearch.admin().indices() | |
.prepareOptimize(ES_INDEX) | |
.setFlush(true) | |
.setOnlyExpungeDeletes(false) | |
.execute().actionGet(); | |
System.out.println("Elasticsearch index optimization finished with " + | |
optimizeResponse.getSuccessfulShards() + " successful and " + | |
optimizeResponse.getFailedShards() + " failed shards out of " + | |
optimizeResponse.getTotalShards() + " total shards"); | |
} | |
} |
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