1 files changed, 145 insertions, 0 deletions
diff --git a/src/main/java/org/onap/crud/parser/util/EdgePayloadUtil.java b/src/main/java/org/onap/crud/parser/util/EdgePayloadUtil.java
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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)));
+    }
+}