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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.rest.search;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import edu.emory.mathcs.backport.java.util.concurrent.TimeUnit;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.javatuples.Pair;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.restcore.search.GroovyQueryBuilder;
import org.onap.aai.serialization.engines.TransactionalGraphEngine;
import org.onap.aai.serialization.queryformats.SubGraphStyle;
import java.io.FileNotFoundException;
import java.util.*;
import java.util.regex.Pattern;
import javax.ws.rs.core.MultivaluedHashMap;
import javax.ws.rs.core.MultivaluedMap;
public class NodeQueryProcessor extends GroovyShellImpl {
private static EELFLogger LOGGER = EELFManager.getInstance().getLogger(NodeQueryProcessor.class);
protected String nodeType;
private MultivaluedMap<String, String> nodeQueryParams = new MultivaluedHashMap<String, String>();
protected final Optional<Collection<Vertex>> vertices;
protected static Pattern p = Pattern.compile("query/(.*+)");
protected Optional<String> gremlin;
protected final TransactionalGraphEngine dbEngine;
protected GroovyQueryBuilder queryBuilder = new GroovyQueryBuilder();;
protected NodeQueryProcessor(Builder builder) {
super(builder);
this.nodeQueryParams = builder.uriParams;
if(builder.getNodeType().isPresent())
this.nodeType = builder.getNodeType().get();
this.dbEngine = builder.getDbEngine();
this.vertices = builder.getVertices();
}
public Pair<String, Map<String, Object>> createQuery() throws AAIException {
Map<String, Object> params = new HashMap<>();
Long timeNowInMilliSecs = System.currentTimeMillis();
Long startTime = 0L;
if(nodeQueryParams.containsKey("hours")){
Long hoursInMilliSec = TimeUnit.HOURS.toMillis(Long.parseLong(nodeQueryParams.getFirst("hours")));
startTime = timeNowInMilliSecs - hoursInMilliSec;
}
else if(nodeQueryParams.containsKey("date-time")){
Long dateTime = Long.parseLong(nodeQueryParams.getFirst("date-time"));
startTime = dateTime;
}
String query = "builder.getVerticesByProperty('aai-node-type', nodeType)"
+ ".or(builder.newInstance().getVerticesGreaterThanProperty('aai-created-ts',startTime),"
+ " builder.newInstance().getVerticesGreaterThanProperty('aai-last-mod-ts',startTime)" + ")";
params.put("startTime", startTime);
params.put("nodeType", nodeType);
query = queryBuilder.executeTraversal(dbEngine, query, params);
String startPrefix = "g.V()";
query = startPrefix + query;
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Converted to gremlin query without the start vertices \n {}", query);
}
return new Pair<>(query, params);
}
public List<Object> execute(SubGraphStyle style) throws FileNotFoundException, AAIException {
final List<Object> resultVertices = new Vector<>();
Pair<String, Map<String, Object>> tuple = this.createQuery();
String query = tuple.getValue0();
Map<String, Object> params = tuple.getValue1();
if (query.equals("")) {
// nothing to do, just exit
return new ArrayList<>();
}
GraphTraversal<?, ?> g = this.runQuery(query, params);
resultVertices.addAll(g.toList());
return resultVertices;
}
}
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