ETags on resources

An etag should be generated (by Champ) when creating
a resource (edge or vertex). The Champ microservice should return
this etag in the response header. Gizmo should also return the etag
in it's response header (Gizmo will receive the etag from Champ).

Issue-ID: AAI-1196

Change-Id: Ie16f871eccbceeccde037e73e0de0d96eeba18bd
Signed-off-by: Sotiropoulos, Ioannis (is948x) <Ioannis.Sotiropoulos@amdocs.com>

1 files changed, 168 insertions, 0 deletions

diff --git a/src/test/java/org/onap/crud/util/etag/EtagGeneratorTest.java b/src/test/java/org/onap/crud/util/etag/EtagGeneratorTest.java
new file mode 100644
index 0000000..c4f7c38
--- /dev/null
+++ b/src/test/java/org/onap/crud/util/etag/EtagGeneratorTest.java
@@ -0,0 +1,168 @@
+/**
+ * ============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.util.etag;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.not;
+import static org.junit.Assert.assertThat;
+import java.io.IOException;
+import java.security.NoSuchAlgorithmException;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.crud.event.GraphEventEdge;
+import org.onap.crud.event.GraphEventVertex;
+import org.onap.crud.util.etag.EtagGenerator;
+import com.google.gson.JsonObject;
+
+public class EtagGeneratorTest {
+
+    private EtagGenerator etagGenerator;
+
+    @Before
+    public void init() throws NoSuchAlgorithmException {
+        etagGenerator = new EtagGenerator();
+    }
+
+    private GraphEventVertex createVertex(String propKey, String propValue) {
+        JsonObject properties = new JsonObject();
+        properties.addProperty(propKey, propValue);
+        GraphEventVertex vertex = new GraphEventVertex("vertex1", "v11", "pserver", properties);
+        return vertex;
+    }
+
+    private GraphEventEdge createEdge(String id, GraphEventVertex source, GraphEventVertex target, String propKey,
+            String propValue) {
+        JsonObject properties = new JsonObject();
+        properties.addProperty(propKey, propValue);
+        GraphEventEdge edge = new GraphEventEdge(id, "v11", "tosca.relationships.HostedOn", source, target, properties);
+        return edge;
+    }
+
+    @Test
+    public void computeHashForIdenticalVertexObjects() throws IOException {
+        // everything is same
+        GraphEventVertex sourceVertex1 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex1 = createVertex("prop2", "value2");
+
+        GraphEventEdge edge1 = createEdge("edge1", sourceVertex1, targetVertex1, "prop1", "value1");
+
+        GraphEventVertex sourceVertex2 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex2 = createVertex("prop2", "value2");
+
+        GraphEventEdge edge2 = createEdge("edge1", sourceVertex2, targetVertex2, "prop1", "value1");
+
+        assertThat(etagGenerator.computeHashForEdge(edge1), is(etagGenerator.computeHashForEdge(edge2)));
+    }
+
+    @Test
+    public void computeHashForVertexObjectsWithDifferentKey() throws IOException {
+        // key is different
+        GraphEventVertex sourceVertex1 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex1 = createVertex("prop2", "value2");
+
+        GraphEventEdge edge1 = createEdge("edge1", sourceVertex1, targetVertex1, "prop1", "value1");
+
+        GraphEventVertex sourceVertex2 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex2 = createVertex("prop2", "value2");
+
+        GraphEventEdge edge2 = createEdge("edge2", sourceVertex2, targetVertex2, "prop1", "value1");
+
+        assertThat(etagGenerator.computeHashForEdge(edge1), not(etagGenerator.computeHashForEdge(edge2)));
+    }
+
+    @Test
+    public void computeHashForVertexObjectsWithDifferentEdge() throws IOException {
+        // relationship is different
+        GraphEventVertex sourceVertex1 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex1 = createVertex("prop2", "value2");
+
+        GraphEventEdge edge1 = createEdge("edge1", sourceVertex1, targetVertex1, "prop1", "value1");
+
+        GraphEventVertex sourceVertex2 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex2 = createVertex("prop2", "value2");
+
+        GraphEventEdge edge2 = createEdge("edge2", sourceVertex2, targetVertex2, "prop1", "value1");
+        edge2.setType("tosca.relationships.RelatedTo");
+
+        assertThat(etagGenerator.computeHashForEdge(edge1), not(etagGenerator.computeHashForEdge(edge2)));
+    }
+
+    @Test
+    public void computeHashForEdgeObjectsWithDifferentVertexObjects() throws IOException {
+        // source/target different
+        GraphEventVertex sourceVertex1 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex1 = createVertex("prop2", "value2");
+        targetVertex1.setId("vertex2");
+
+        GraphEventEdge edge1 = createEdge("edge1", sourceVertex1, targetVertex1, "prop1", "value1");
+
+        GraphEventVertex sourceVertex2 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex2 = createVertex("prop2", "value2");
+
+        GraphEventEdge edge2 = createEdge("edge2", sourceVertex2, targetVertex2, "prop1", "value1");
+        edge2.setType("tosca.relationships.RelatedTo");
+
+        assertThat(etagGenerator.computeHashForEdge(edge1), not(etagGenerator.computeHashForEdge(edge2)));
+    }
+
+    @Test
+    public void computeHashForEdgeObjectsWithDifferentProperties() throws IOException {
+        // property different
+        GraphEventVertex sourceVertex1 = createVertex("sourceprop1", "value1");
+        GraphEventVertex targetVertex1 = createVertex("targetprop2", "value2");
+
+        GraphEventEdge edge1 = createEdge("edge1", sourceVertex1, targetVertex1, "edgeprop1", "value1");
+
+        GraphEventVertex sourceVertex2 = createVertex("sourceprop1", "value1");
+        GraphEventVertex targetVertex2 = createVertex("targetprop2", "value2");
+
+        GraphEventEdge edge2 = createEdge("edge1", sourceVertex2, targetVertex2, "edgeprop2", "value2");
+
+        assertThat(etagGenerator.computeHashForEdge(edge1), not(etagGenerator.computeHashForEdge(edge2)));
+    }
+
+    @Test
+    public void testComputeHashForIdenticalVertexObjects() throws IOException {
+        GraphEventVertex sourceVertex1 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex1 = createVertex("prop1", "value1");
+        assertThat(etagGenerator.computeHashForVertex(sourceVertex1),
+                is(etagGenerator.computeHashForVertex(targetVertex1)));
+    }
+
+    @Test
+    public void testComputeHashForVertexObjectsWithDifferentProperties() throws IOException {
+        GraphEventVertex sourceVertex1 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex1 = createVertex("prop2", "value2");
+        assertThat(etagGenerator.computeHashForVertex(sourceVertex1),
+                not(etagGenerator.computeHashForVertex(targetVertex1)));
+    }
+
+    @Test
+    public void testComputeHashForChampObjectsWithDifferentKey() throws IOException {
+        GraphEventVertex sourceVertex1 = createVertex("prop1", "value1");
+        GraphEventVertex targetVertex1 = createVertex("prop1", "value1");
+        targetVertex1.setId("vertex2");
+        assertThat(etagGenerator.computeHashForVertex(sourceVertex1),
+                not(etagGenerator.computeHashForVertex(targetVertex1)));
+    }
+
+
+}
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