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>

5 files changed, 167 insertions, 1 deletions

diff --git a/models-interactions/model-simulators/pom.xml b/models-interactions/model-simulators/pom.xml
index b0c48ebda..7d64200e9 100644
--- a/models-interactions/model-simulators/pom.xml
+++ b/models-interactions/model-simulators/pom.xml
@@ -73,5 +73,10 @@
       <artifactId>policy-models-decisions</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.onap.policy.models.sim</groupId>
+      <artifactId>policy-models-sim-dmaap</artifactId>
+      <version>${project.version}</version>
+    </dependency>
   </dependencies>
 </project>
diff --git a/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/Util.java b/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/Util.java
index a1d28ba23..6c1a05753 100644
--- a/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/Util.java
+++ b/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/Util.java
@@ -22,11 +22,18 @@
 package org.onap.policy.simulators;
 
 import java.io.IOException;
-
+import java.util.Properties;
 import org.onap.policy.common.endpoints.http.server.HttpServletServer;
 import org.onap.policy.common.endpoints.http.server.HttpServletServerFactoryInstance;
+import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
 import org.onap.policy.common.gson.GsonMessageBodyHandler;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
 import org.onap.policy.common.utils.network.NetworkUtil;
+import org.onap.policy.common.utils.resources.ResourceUtils;
+import org.onap.policy.models.sim.dmaap.parameters.DmaapSimParameterGroup;
+import org.onap.policy.models.sim.dmaap.provider.DmaapSimProvider;
+import org.onap.policy.models.sim.dmaap.rest.DmaapSimRestServer;
 
 public class Util {
     public static final String AAISIM_SERVER_NAME = "aaiSim";
@@ -40,6 +47,7 @@ public class Util {
     public static final int VFCSIM_SERVER_PORT = 6668;
     public static final int GUARDSIM_SERVER_PORT = 6669;
     public static final int SDNCSIM_SERVER_PORT = 6670;
+    public static final int DMAAPSIM_SERVER_PORT = 3904;
 
     private static final String CANNOT_CONNECT = "cannot connect to port ";
     private static final String LOCALHOST = "localhost";
@@ -139,4 +147,34 @@ public class Util {
         }
         return testServer;
     }
+
+    /**
+     * Build a DMaaP simulator.
+     *
+     * @return the simulator
+     * @throws InterruptedException if a thread is interrupted
+     * @throws IOException if an IO errror occurs
+     * @throws CoderException if the server parameters cannot be loaded
+     */
+    public static HttpServletServer buildDmaapSim() throws InterruptedException, IOException, CoderException {
+        String json = ResourceUtils.getResourceAsString("org/onap/policy/simulators/dmaap/DmaapParameters.json");
+        DmaapSimParameterGroup params = new StandardCoder().decode(json, DmaapSimParameterGroup.class);
+
+        DmaapSimProvider.setInstance(new DmaapSimProvider(params));
+
+        Properties props = DmaapSimRestServer.getServerProperties(params.getRestServerParameters());
+
+        final String svcpfx = PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES + "."
+                        + params.getRestServerParameters().getName();
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_PORT_SUFFIX,
+                        Integer.toString(DMAAPSIM_SERVER_PORT));
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX, "true");
+
+        HttpServletServer testServer = HttpServletServerFactoryInstance.getServerFactory().build(props).get(0);
+        testServer.waitedStart(5000);
+        if (!NetworkUtil.isTcpPortOpen(LOCALHOST, testServer.getPort(), 50, 1000L)) {
+            throw new IllegalStateException(CANNOT_CONNECT + testServer.getPort());
+        }
+        return testServer;
+    }
 }
diff --git a/models-interactions/model-simulators/src/main/resources/org/onap/policy/simulators/dmaap/DmaapParameters.json b/models-interactions/model-simulators/src/main/resources/org/onap/policy/simulators/dmaap/DmaapParameters.json
new file mode 100644
index 000000000..b704f6f14
--- /dev/null
+++ b/models-interactions/model-simulators/src/main/resources/org/onap/policy/simulators/dmaap/DmaapParameters.json
@@ -0,0 +1,8 @@
+{
+    "name": "DMaapSim",
+    "topicSweepSec": 300,
+    "restServerParameters": {
+        "host": "0.0.0.0",
+        "port": 3904
+    }
+}
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("${port}", String.valueOf(Util.DMAAPSIM_SERVER_PORT));
+
+        TopicParameterGroup topicConfig = new StandardCoder().decode(topicJson, TopicParameterGroup.class);
+
+        TopicEndpointManager.getManager().addTopics(topicConfig);
+        TopicEndpointManager.getManager().start();
+
+        queue = new LinkedBlockingQueue<>();
+    }
+
+    @After
+    public void tearDown() {
+        TopicEndpointManager.getManager().shutdown();
+        HttpServletServerFactoryInstance.getServerFactory().destroy();
+    }
+
+    @Test
+    public void test() throws InterruptedException {
+        TopicEndpointManager.getManager().getDmaapTopicSource(TOPIC)
+                        .register((infra, topic, event) -> queue.add(event));
+
+        DmaapTopicSink sink = TopicEndpointManager.getManager().getDmaapTopicSink(TOPIC);
+        sink.send("hello");
+        sink.send("world");
+
+        assertEquals("hello", queue.poll(MAX_WAIT_SEC, TimeUnit.SECONDS));
+        assertEquals("world", queue.poll(MAX_WAIT_SEC, TimeUnit.SECONDS));
+    }
+}
diff --git a/models-interactions/model-simulators/src/test/resources/org/onap/policy/simulators/dmaap/TopicParameters.json b/models-interactions/model-simulators/src/test/resources/org/onap/policy/simulators/dmaap/TopicParameters.json
new file mode 100644
index 000000000..ba1f4806f
--- /dev/null
+++ b/models-interactions/model-simulators/src/test/resources/org/onap/policy/simulators/dmaap/TopicParameters.json
@@ -0,0 +1,21 @@
+{
+    "topicSources": [
+        {
+            "topic": "MY-TOPIC",
+            "servers": [
+                "localhost:${port}"
+            ],
+            "topicCommInfrastructure": "dmaap",
+            "fetchTimeout": 100
+        }
+    ],
+    "topicSinks": [
+        {
+            "topic": "MY-TOPIC",
+            "servers": [
+                "localhost:${port}"
+            ],
+            "topicCommInfrastructure": "dmaap"
+        }
+    ]
+}
\ No newline at end of file