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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017-2018 Amdocs
* ================================================================================
* 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.crud.parser.util;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.ws.rs.core.Response.Status;
import org.onap.crud.entity.Edge;
import org.onap.crud.entity.Vertex;
import org.onap.crud.exception.CrudException;
/**
* Utility Class to extract data from the Edge Payload
*/
public class EdgePayloadUtil {
private static final Pattern URL_MATCHER = Pattern.compile("services/inventory/(.*)/(.*)/(.*)");
private static Matcher getVertexMatcher(String vertex) throws CrudException {
Matcher matcher = URL_MATCHER.matcher(vertex);
if (!matcher.matches()) {
throw new CrudException("Invalid Source/Target Urls", Status.BAD_REQUEST);
}
return matcher;
}
/**
* Returns the node type from a vertex on the edge payload
*
* @param vertex
* @return
* @throws CrudException
*/
public static String getVertexNodeType(String vertex) throws CrudException {
return getVertexMatcher(vertex).group(2);
}
/**
* Returns the node id from a vertex on the edge payload
*
* @param vertex
* @return
* @throws CrudException
*/
public static String getVertexNodeId(String vertex) throws CrudException {
return getVertexMatcher(vertex).group(3);
}
/**
* Generates a key based on the edge payload content
*
* @param source
* @param target
* @param type
* @return
* @throws CrudException
*/
public static String generateEdgeKey(String source, String target, String type) throws CrudException {
return getVertexNodeType(source) + ":" + getVertexNodeType(target) + ":" + type;
}
/**
* Returns an Edge Builder object from the payload properties
*
* @param source
* @param target
* @param type
* @return
* @throws CrudException
*/
public static Edge.Builder getBuilderFromEdgePayload(String source, String target, String type) throws CrudException {
Edge.Builder edgeBuilder = new Edge.Builder(type);
edgeBuilder.source(new Vertex.Builder(getVertexNodeType(source)).id(getVertexNodeId(source)).build());
edgeBuilder.target(new Vertex.Builder(getVertexNodeType(target)).id(getVertexNodeId(target)).build());
return edgeBuilder;
}
/**
* Returns an Edge Builder object from an Edge object properties
*
* @param edge
* @return
*/
public static Edge.Builder getBuilderFromEdge(Edge edge) {
Edge.Builder edgeBuilder = new Edge.Builder(edge.getType()).id(edge.getId().get());
edgeBuilder
.source(new Vertex.Builder(edge.getSource().getType()).id(edge.getSource().getId().get()).build());
edgeBuilder
.target(new Vertex.Builder(edge.getTarget().getType()).id(edge.getTarget().getId().get()).build());
return edgeBuilder;
}
/**
* Filter Edges by its source/target vertex type and the edge type
*
* @param sourceTargetType the new Edge source/target type
* @param type
* @param edges
* @return List<Edge>
*/
public static List<Edge> filterEdgesByRelatedVertexAndType(String sourceTargetType, String type, List<Edge> edges) {
List<Edge> filteredEdges = new ArrayList<>();
if (edges != null) {
for (Edge edge : edges) {
if (doesEdgeTypeMatch(edge, type) && doesEdgeSourceTargetTypeMatch(edge, sourceTargetType)) {
filteredEdges.add(edge);
}
}
}
return filteredEdges;
}
private static boolean doesEdgeTypeMatch(Edge edge, String type) {
return edge.getType() != null && edge.getType().equals(type);
}
private static boolean doesEdgeSourceTargetTypeMatch(Edge edge, String sourceTargetType) {
return (edge.getSource().getType() != null && edge.getSource().getType().equals(sourceTargetType))
|| ((edge.getTarget().getType() != null && edge.getTarget().getType().equals(sourceTargetType)));
}
}
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