Flesh out DMaaP simulator

Fleshed out the dmaap simulator with additional media types.
Added more junit tests.
Added buildDmaapSim() to simulators Util.

Change-Id: I39acd3df8e8d0ded21228e56fa1ef919cafc3772
Issue-ID: POLICY-2144
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 94 insertions, 0 deletions

diff --git a/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/DmaapSimulatorTest.java b/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/DmaapSimulatorTest.java
new file mode 100644
index 000000000..50e9bad5b
--- /dev/null
+++ b/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/DmaapSimulatorTest.java
@@ -0,0 +1,94 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 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.policy.simulators;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.io.File;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onap.policy.common.endpoints.event.comm.TopicEndpointManager;
+import org.onap.policy.common.endpoints.event.comm.bus.DmaapTopicSink;
+import org.onap.policy.common.endpoints.http.server.HttpServletServerFactoryInstance;
+import org.onap.policy.common.endpoints.parameters.TopicParameterGroup;
+import org.onap.policy.common.utils.coder.StandardCoder;
+
+public class DmaapSimulatorTest {
+    private static final int MAX_WAIT_SEC = 2;
+    private static final String TOPIC = "MY-TOPIC";
+
+    /**
+     * Messages from the topic are placed here by the endpoint.
+     */
+    private BlockingQueue<String> queue;
+
+    @BeforeClass
+    public static void setUpBeforeClass() throws Exception {
+        TopicEndpointManager.getManager().shutdown();
+    }
+
+    /**
+     * Starts the simulator and the topic.
+     *
+     * @throws Exception if an error occurs
+     */
+    @Before
+    public void setUp() throws Exception {
+        assertNotNull(Util.buildDmaapSim());
+
+        String topicJson = new String(Files.readAllBytes(
+                        new File("src/test/resources/org/onap/policy/simulators/dmaap/TopicParameters.json").toPath()),
+                        StandardCharsets.UTF_8);
+        topicJson = topicJson.replace("${port}", String.valueOf(Util.DMAAPSIM_SERVER_PORT));
+
+        TopicParameterGroup topicConfig = new StandardCoder().decode(topicJson, TopicParameterGroup.class);
+
+        TopicEndpointManager.getManager().addTopics(topicConfig);
+        TopicEndpointManager.getManager().start();
+
+        queue = new LinkedBlockingQueue<>();
+    }
+
+    @After
+    public void tearDown() {
+        TopicEndpointManager.getManager().shutdown();
+        HttpServletServerFactoryInstance.getServerFactory().destroy();
+    }
+
+    @Test
+    public void test() throws InterruptedException {
+        TopicEndpointManager.getManager().getDmaapTopicSource(TOPIC)
+                        .register((infra, topic, event) -> queue.add(event));
+
+        DmaapTopicSink sink = TopicEndpointManager.getManager().getDmaapTopicSink(TOPIC);
+        sink.send("hello");
+        sink.send("world");
+
+        assertEquals("hello", queue.poll(MAX_WAIT_SEC, TimeUnit.SECONDS));
+        assertEquals("world", queue.poll(MAX_WAIT_SEC, TimeUnit.SECONDS));
+    }
+}