/*
* Copyright 2016 The Simple File Server Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.sfs.elasticsearch.masterkey;
import com.google.common.base.Optional;
import io.vertx.core.logging.Logger;
import org.elasticsearch.action.search.SearchRequestBuilder;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.index.query.TermQueryBuilder;
import org.sfs.Server;
import org.sfs.VertxContext;
import org.sfs.elasticsearch.Elasticsearch;
import org.sfs.elasticsearch.Jsonify;
import org.sfs.encryption.AlgorithmDef;
import org.sfs.vo.PersistentMasterKey;
import rx.Observable;
import rx.functions.Func1;
import static com.google.common.base.Optional.absent;
import static io.vertx.core.logging.LoggerFactory.getLogger;
import static java.lang.String.format;
import static java.util.Collections.emptyList;
import static org.elasticsearch.common.unit.TimeValue.timeValueMillis;
import static org.elasticsearch.index.query.QueryBuilders.termQuery;
import static org.elasticsearch.search.sort.SortOrder.DESC;
import static rx.Observable.from;
public class GetNewestMasterKey implements Func1<Void, Observable<Optional<PersistentMasterKey>>> {
private static final Logger LOGGER = getLogger(ListReEncryptableMasterKeys.class);
private final VertxContext<Server> vertxContext;
private final AlgorithmDef algorithmDef;
public GetNewestMasterKey(VertxContext<Server> vertxContext, AlgorithmDef algorithmDef) {
this.vertxContext = vertxContext;
this.algorithmDef = algorithmDef;
}
@Override
public Observable<Optional<PersistentMasterKey>> call(Void aVoid) {
final Elasticsearch elasticSearch = vertxContext.verticle().elasticsearch();
TermQueryBuilder query = termQuery("algorithm_name", algorithmDef.getAlgorithmName());
SearchRequestBuilder request =
elasticSearch.get()
.prepareSearch(
elasticSearch.masterKeyTypeIndex())
.setVersion(true)
.setTypes(elasticSearch.defaultType())
.addSort("create_ts", DESC)
.setQuery(query)
.setSize(1)
.setTimeout(timeValueMillis(elasticSearch.getDefaultSearchTimeout() - 10));
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(format("Search Request {%s,%s} = %s", elasticSearch.defaultType(), elasticSearch.masterKeyTypeIndex(), Jsonify.toString(request)));
}
return elasticSearch.execute(vertxContext, request, elasticSearch.getDefaultSearchTimeout())
.flatMap(oSearchResponse -> {
SearchResponse searchResponse = oSearchResponse.get();
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(format("Search Response {%s,%s} = %s", elasticSearch.defaultType(), elasticSearch.masterKeyTypeIndex(), Jsonify.toString(searchResponse)));
}
if (oSearchResponse.isPresent()) {
return from(oSearchResponse.get().getHits());
} else {
return from(emptyList());
}
})
.map(PersistentMasterKey::fromSearchHit)
.map(Optional::of)
.singleOrDefault(absent());
}
}