Add docker file for all simulators

Some CSITs may require multiple simulators.  This adds a class that
will start all of the simulators.  A tarball is generated from which
a docker image can be built.
Added simulators for Topics: appc and appc-lcm.
Fixed licenses in files in packages directory.
Fixed per review comments:
- add version to Dockerfile

Issue-ID: POLICY-2434
Signed-off-by: Jim Hahn <jrh3@att.com>
Change-Id: Id7aa9cb5a5874f7b4185273ab0d2c074198554ff

23 files changed, 1471 insertions, 0 deletions

diff --git a/models-sim/policy-models-simulators/pom.xml b/models-sim/policy-models-simulators/pom.xml
new file mode 100644
index 000000000..5b9e4dfcc
--- /dev/null
+++ b/models-sim/policy-models-simulators/pom.xml
@@ -0,0 +1,98 @@
+<!--
+  ============LICENSE_START=======================================================
+  ONAP
+  ================================================================================
+   Copyright (C) 2020 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.
+
+  SPDX-License-Identifier: Apache-2.0
+  ============LICENSE_END=========================================================
+-->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.onap.policy.models.sim</groupId>
+        <artifactId>policy-models-sim</artifactId>
+        <version>2.2.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>policy-models-simulators</artifactId>
+
+    <name>${project.artifactId}</name>
+    <description>A module that runs all "simulators", including DMaaP.</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.onap.policy.models.policy-models-interactions</groupId>
+            <artifactId>simulators</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-api-mockito2</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <resources>
+            <!-- Output the version of the service -->
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+                <includes>
+                    <include>**/version.txt</include>
+                </includes>
+            </resource>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>false</filtering>
+                <excludes>
+                    <exclude>**/version.txt</exclude>
+                </excludes>
+            </resource>
+        </resources>
+
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>generate-complete-tar</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                        <configuration>
+                            <descriptors>
+                                <descriptor>src/main/package/tarball/assembly.xml</descriptor>
+                            </descriptors>
+                            <finalName>${project.artifactId}-${project.version}</finalName>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+
+    </build>
+</project>
diff --git a/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/ClassRestServerParameters.java b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/ClassRestServerParameters.java
new file mode 100644
index 000000000..030d77449
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/ClassRestServerParameters.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.models.simulators;
+
+import lombok.Getter;
+import org.apache.commons.lang3.StringUtils;
+import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.common.parameters.ObjectValidationResult;
+import org.onap.policy.common.parameters.ValidationResult;
+import org.onap.policy.common.parameters.ValidationStatus;
+
+@Getter
+public class ClassRestServerParameters extends RestServerParameters {
+    private String providerClass;
+
+    /**
+     * Validates the parameters.
+     *
+     * @param containerName name of the parameter container
+     * @return the validation result
+     */
+    public ValidationResult validate(String containerName) {
+        // not using a BeanValidator because username and password are not required
+        if (StringUtils.isBlank(providerClass)) {
+            return new ObjectValidationResult("providerClass", providerClass, ValidationStatus.INVALID, "is empty");
+        }
+
+        return new ObjectValidationResult("providerClass", providerClass);
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/Main.java b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/Main.java
new file mode 100644
index 000000000..8333800f3
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/Main.java
@@ -0,0 +1,281 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2020 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.models.simulators;
+
+import java.io.FileNotFoundException;
+import java.lang.reflect.InvocationTargetException;
+import java.util.List;
+import java.util.Properties;
+import java.util.concurrent.atomic.AtomicReference;
+import lombok.AccessLevel;
+import lombok.Getter;
+import org.onap.policy.common.endpoints.event.comm.TopicEndpointManager;
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+import org.onap.policy.common.endpoints.event.comm.TopicSource;
+import org.onap.policy.common.endpoints.http.server.HttpServletServer;
+import org.onap.policy.common.endpoints.http.server.HttpServletServerFactoryInstance;
+import org.onap.policy.common.endpoints.parameters.TopicParameters;
+import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
+import org.onap.policy.common.gson.GsonMessageBodyHandler;
+import org.onap.policy.common.parameters.BeanValidationResult;
+import org.onap.policy.common.utils.coder.Coder;
+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.common.utils.services.ServiceManagerContainer;
+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.CambriaMessageBodyHandler;
+import org.onap.policy.models.sim.dmaap.rest.TextMessageBodyHandler;
+import org.onap.policy.simulators.TopicServer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class runs all simulators specified in the parameter file.
+ */
+public class Main extends ServiceManagerContainer {
+    private static final Logger logger = LoggerFactory.getLogger(Main.class);
+
+    private static final String CANNOT_CONNECT = "cannot connect to port ";
+
+    @Getter(AccessLevel.PROTECTED)
+    private static Main instance;
+
+
+    /**
+     * Runs the simulators.
+     *
+     * @param paramFile parameter file name
+     */
+    public Main(String paramFile) {
+        super(Main.class.getPackage().getName());
+
+        SimulatorParameters params = readParameters(paramFile);
+        BeanValidationResult result = params.validate("simulators");
+        if (!result.isValid()) {
+            logger.error("invalid parameters:\n{}", result.getResult());
+            throw new IllegalArgumentException("invalid simulator parameters");
+        }
+
+        DmaapSimParameterGroup dmaapProv = params.getDmaapProvider();
+        String dmaapName = dmaapProv.getName();
+        String provName = dmaapName.replace("simulator", "provider");
+
+        // dmaap provider
+        AtomicReference<DmaapSimProvider> provRef = new AtomicReference<>();
+        addAction(provName, () -> provRef.set(buildDmaapProvider(dmaapProv)), () -> provRef.get().shutdown());
+
+        // @formatter:off
+
+        // REST server simulators
+        for (ClassRestServerParameters restsim : params.getRestServers()) {
+            AtomicReference<HttpServletServer> ref = new AtomicReference<>();
+            addAction(restsim.getName(),
+                () -> ref.set(buildRestServer(dmaapName, restsim)),
+                () -> ref.get().shutdown());
+        }
+
+        // NOTE: topics must be started AFTER the (dmaap) rest servers
+
+        // topic sinks
+        AtomicReference<List<TopicSink>> sinkRef = new AtomicReference<>();
+        addAction("topic sinks", () -> sinkRef.set(buildSinks(params.getTopicSinks())),
+            () -> shutdownSinks(sinkRef.get()));
+
+        // topic sources
+        AtomicReference<List<TopicSource>> sourceRef = new AtomicReference<>();
+        addAction("topic sources", () -> sourceRef.set(buildSources(params.getTopicSources())),
+            () -> shutdownSources(sourceRef.get()));
+
+        // topic server simulators
+        for (TopicServerParameters topicsim : params.getTopicServers()) {
+            AtomicReference<TopicServer<?>> ref = new AtomicReference<>();
+            addAction(topicsim.getName(),
+                () -> ref.set(buildTopicServer(topicsim, sinkRef.get(), sourceRef.get())),
+                () -> ref.get().shutdown());
+        }
+
+        // @formatter:on
+    }
+
+    /**
+     * The main method.
+     *
+     * @param args the arguments, the first of which is the name of the parameter file
+     */
+    public static void main(final String[] args) {
+        try {
+            if (args.length != 1) {
+                throw new IllegalArgumentException("arg(s): parameter-file-name");
+            }
+
+            instance = new Main(args[0]);
+            instance.start();
+
+        } catch (RuntimeException e) {
+            logger.error("failed to start simulators", e);
+        }
+    }
+
+    private SimulatorParameters readParameters(String paramFile) {
+        try {
+            String paramsJson = getResourceAsString(paramFile);
+            if (paramsJson == null) {
+                throw new IllegalArgumentException(new FileNotFoundException(paramFile));
+            }
+
+            String hostName = NetworkUtil.getHostname();
+            logger.info("replacing 'HOST_NAME' with {} in {}", hostName, paramFile);
+
+            paramsJson = paramsJson.replace("${HOST_NAME}", hostName);
+
+            return makeCoder().decode(paramsJson, SimulatorParameters.class);
+
+        } catch (CoderException e) {
+            throw new IllegalArgumentException("cannot decode " + paramFile, e);
+        }
+    }
+
+    private DmaapSimProvider buildDmaapProvider(DmaapSimParameterGroup params) {
+        DmaapSimProvider prov = new DmaapSimProvider(params);
+        DmaapSimProvider.setInstance(prov);
+        prov.start();
+
+        return prov;
+    }
+
+    protected List<TopicSink> buildSinks(List<TopicParameters> params) {
+        return TopicEndpointManager.getManager().addTopicSinks(params);
+    }
+
+    private void shutdownSinks(List<TopicSink> sinks) {
+        sinks.forEach(TopicSink::shutdown);
+    }
+
+    protected List<TopicSource> buildSources(List<TopicParameters> params) {
+        return TopicEndpointManager.getManager().addTopicSources(params);
+    }
+
+    private void shutdownSources(List<TopicSource> sources) {
+        sources.forEach(TopicSource::shutdown);
+    }
+
+    private HttpServletServer buildRestServer(String dmaapName, ClassRestServerParameters params) {
+        try {
+            Properties props = getServerProperties(dmaapName, params);
+            HttpServletServer testServer = makeServer(props);
+            testServer.waitedStart(5000);
+
+            String svcpfx = PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + params.getName();
+            String hostName = props.getProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_HOST_SUFFIX);
+
+            if (!isTcpPortOpen(hostName, testServer.getPort())) {
+                throw new IllegalStateException(CANNOT_CONNECT + testServer.getPort());
+            }
+
+            return testServer;
+
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new IllegalStateException("interrupted while building " + params.getName(), e);
+        }
+    }
+
+    private TopicServer<?> buildTopicServer(TopicServerParameters params, List<TopicSink> sinks,
+                    List<TopicSource> sources) {
+        try {
+            // find the desired sink
+            TopicSink sink = sinks.stream().filter(sink2 -> sink2.getTopic().equals(params.getSink())).findAny()
+                            .orElseThrow(() -> new IllegalArgumentException("invalid sink topic " + params.getSink()));
+
+            // find the desired source
+            TopicSource source = sources.stream().filter(source2 -> source2.getTopic().equals(params.getSource()))
+                            .findAny().orElseThrow(() -> new IllegalArgumentException(
+                                            "invalid source topic " + params.getSource()));
+
+            // create the topic server
+            return (TopicServer<?>) Class.forName(params.getProviderClass())
+                            .getDeclaredConstructor(TopicSink.class, TopicSource.class).newInstance(sink, source);
+
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException
+                        | SecurityException | ClassNotFoundException e) {
+            throw new IllegalArgumentException("cannot create TopicServer: " + params.getName(), e);
+        }
+    }
+
+    /**
+     * Creates a set of properties, suitable for building a REST server, from the
+     * parameters.
+     *
+     * @param params parameters from which to build the properties
+     * @return a set of properties representing the given parameters
+     */
+    private static Properties getServerProperties(String dmaapName, ClassRestServerParameters params) {
+        final Properties props = new Properties();
+        props.setProperty(PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES, params.getName());
+
+        final String svcpfx = PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + params.getName();
+
+        props.setProperty(PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES, params.getName());
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_HOST_SUFFIX, params.getHost());
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_PORT_SUFFIX,
+                        Integer.toString(params.getPort()));
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_HTTPS_SUFFIX,
+                        Boolean.toString(params.isHttps()));
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_REST_CLASSES_SUFFIX,
+                        params.getProviderClass());
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX, "false");
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_SWAGGER_SUFFIX, "false");
+        props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX, "true");
+
+        if (dmaapName.equals(params.getName())) {
+            props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_SERIALIZATION_PROVIDER,
+                            String.join(",", CambriaMessageBodyHandler.class.getName(),
+                                            GsonMessageBodyHandler.class.getName(),
+                                            TextMessageBodyHandler.class.getName()));
+        } else {
+            props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_SERIALIZATION_PROVIDER, String.join(",",
+                            GsonMessageBodyHandler.class.getName(), TextMessageBodyHandler.class.getName()));
+        }
+
+        return props;
+    }
+
+    // the following methods may be overridden by junit tests
+
+    protected String getResourceAsString(String resourceName) {
+        return ResourceUtils.getResourceAsString(resourceName);
+    }
+
+    protected Coder makeCoder() {
+        return new StandardCoder();
+    }
+
+    protected HttpServletServer makeServer(Properties props) {
+        return HttpServletServerFactoryInstance.getServerFactory().build(props).get(0);
+    }
+
+    protected boolean isTcpPortOpen(String hostName, int port) throws InterruptedException {
+        return NetworkUtil.isTcpPortOpen(hostName, port, 100, 200L);
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/SimulatorParameters.java b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/SimulatorParameters.java
new file mode 100644
index 000000000..c47ff8876
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/SimulatorParameters.java
@@ -0,0 +1,82 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.models.simulators;
+
+import java.util.LinkedList;
+import java.util.List;
+import lombok.Getter;
+import org.onap.policy.common.endpoints.parameters.TopicParameters;
+import org.onap.policy.common.parameters.BeanValidationResult;
+import org.onap.policy.common.parameters.BeanValidator;
+import org.onap.policy.common.parameters.annotations.NotNull;
+import org.onap.policy.models.sim.dmaap.parameters.DmaapSimParameterGroup;
+
+/**
+ * Simulator parameters.
+ */
+@Getter
+@NotNull
+public class SimulatorParameters {
+
+    /**
+     * Note: this is only used to capture the provider's parameters; the rest server
+     * parameters that it contains are ignored. Instead, the parameters for the rest
+     * server are contained within the {@link #restServers} entry having the same name as
+     * the provider parameters.
+     */
+    private DmaapSimParameterGroup dmaapProvider;
+
+    /**
+     * Parameters for the REST server simulators that are to be started.
+     */
+    private List<ClassRestServerParameters> restServers = new LinkedList<>();
+
+    /**
+     * Topic sinks that are used by {@link #topicServers}.
+     */
+    private List<TopicParameters> topicSinks = new LinkedList<>();
+
+    /**
+     * Topic sources that are used by {@link #topicServers}.
+     */
+    private List<TopicParameters> topicSources = new LinkedList<>();
+
+    /**
+     * Parameters for the TOPIC server simulators that are to be started.
+     */
+    private List<TopicServerParameters> topicServers = new LinkedList<>();
+
+
+    /**
+     * Validates the parameters.
+     *
+     * @param containerName name of the parameter container
+     * @return the validation result
+     */
+    public BeanValidationResult validate(String containerName) {
+        BeanValidationResult result = new BeanValidator().validateTop(containerName, this);
+
+        result.validateList("restServers", restServers, params -> params.validate("restServers"));
+        result.validateList("topicServers", topicServers, params -> params.validate("topicServers"));
+
+        return result;
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/TopicServerParameters.java b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/TopicServerParameters.java
new file mode 100644
index 000000000..8a477b232
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/TopicServerParameters.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.models.simulators;
+
+import lombok.Getter;
+import org.onap.policy.common.parameters.BeanValidationResult;
+import org.onap.policy.common.parameters.BeanValidator;
+import org.onap.policy.common.parameters.annotations.NotBlank;
+import org.onap.policy.common.parameters.annotations.NotNull;
+
+@Getter
+@NotNull
+@NotBlank
+public class TopicServerParameters {
+    private String name;
+    private String providerClass;
+    private String sink;
+    private String source;
+
+
+    /**
+     * Validates the parameters.
+     *
+     * @param containerName name of the parameter container
+     * @return the validation result
+     */
+    public BeanValidationResult validate(String containerName) {
+        return new BeanValidator().validateTop(containerName, this);
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/main/package/docker/Dockerfile b/models-sim/policy-models-simulators/src/main/package/docker/Dockerfile
new file mode 100644
index 000000000..c41cd3804
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/package/docker/Dockerfile
@@ -0,0 +1,59 @@
+#
+# ============LICENSE_START=======================================================
+# ONAP
+# ================================================================================
+# Copyright (C) 2020 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=========================================================
+#
+
+#
+# Docker file to build an image that runs the simulators
+#
+
+FROM onap/policy-jre-alpine:2.0.1
+
+LABEL maintainer="Policy Team"
+
+ARG POLICY_LOGS=/var/log/onap/policy/simulators
+
+ENV POLICY_HOME /opt/app/policy
+ENV POLICY_LOGS ${POLICY_LOGS}
+
+# Create DMaaP simulator user and group
+# Add simulator-specific directories and set ownership as the simulator user
+RUN mkdir -p ${POLICY_HOME}/simulators \
+    && mkdir -p ${POLICY_HOME}/simulators/bin \
+    && mkdir -p ${POLICY_LOGS} \
+    && mkdir /packages
+
+# Unpack the tarball
+COPY policy-models-simulators-tarball.tar.gz /packages
+RUN tar xvfz /packages/policy-models-simulators-tarball.tar.gz --directory ${POLICY_HOME}/simulators \
+    && rm /packages/policy-models-simulators-tarball.tar.gz
+
+# Ensure everything has the correct permissions
+# Copy scripts simulator user area
+COPY simulators.sh ${POLICY_HOME}/simulators/bin
+RUN find /opt/app -type d -perm 755 \
+    && find /opt/app -type f -perm 644 \
+    && chmod 755 ${POLICY_HOME}/simulators/bin/* \
+    && chown -R policy:policy $POLICY_HOME $POLICY_LOGS
+
+USER policy:policy
+
+ENV PATH ${POLICY_HOME}/simulators/bin:$PATH
+ENTRYPOINT [ "bash", "simulators.sh" ]
diff --git a/models-sim/policy-models-simulators/src/main/package/docker/docker_build.sh b/models-sim/policy-models-simulators/src/main/package/docker/docker_build.sh
new file mode 100644
index 000000000..efbb1dc0f
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/package/docker/docker_build.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+#
+# ============LICENSE_START=======================================================
+# ONAP
+# ================================================================================
+# Copyright (C) 2020 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=========================================================
+#
+
+#
+# Script to build a Docker file for the simulators. The docker image
+# generated by this script should NOT be placed in the ONAP nexus, it is
+# only for testing purposes.
+#
+
+if [ -z "$SIMULATOR_HOME" ]
+then
+    SIMULATOR_HOME=$PWD
+fi
+
+# Check for the dockerfile
+if [ ! -f "$SIMULATOR_HOME/src/main/package/docker/Dockerfile" ]
+then
+    echo docker file "$SIMULATOR_HOME/src/main/package/docker/Dockerfile" not found
+    exit 1
+fi
+
+# Check for the start script
+if [ ! -f "$SIMULATOR_HOME/src/main/package/docker/simulators.sh" ]
+then
+    echo start script "$SIMULATOR_HOME/src/main/package/docker/simulators.sh" not found
+    exit 1
+fi
+
+# Check for the tarball
+tarball_count=`ls $SIMULATOR_HOME/target/policy-models-simulators-*tarball.tar.gz 2> /dev/null | wc | awk '{print $1}'`
+if [ "$tarball_count" -ne "1" ]
+then
+    echo one and only one tarball should exist in the target directory
+    exit 2
+fi
+
+# Set up the docker build
+rm -fr $SIMULATOR_HOME/target/docker
+mkdir $SIMULATOR_HOME/target/docker
+cp $SIMULATOR_HOME/src/main/package/docker/Dockerfile $SIMULATOR_HOME/target/docker
+cp $SIMULATOR_HOME/src/main/package/docker/simulators.sh $SIMULATOR_HOME/target/docker
+cp $SIMULATOR_HOME/target/policy-models-simulators-*tarball.tar.gz \
+    $SIMULATOR_HOME/target/docker/policy-models-simulators-tarball.tar.gz
+
+# Run the docker build
+cd $SIMULATOR_HOME/target
+docker build -t policy/simulators docker
diff --git a/models-sim/policy-models-simulators/src/main/package/docker/simulators.sh b/models-sim/policy-models-simulators/src/main/package/docker/simulators.sh
new file mode 100644
index 000000000..57e742708
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/package/docker/simulators.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+#
+# ============LICENSE_START=======================================================
+# ONAP
+# ================================================================================
+# Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=========================================================
+#
+
+if [ -z "$SIMULATOR_HOME" ]
+then
+    SIMULATOR_HOME=${POLICY_HOME}/simulators
+fi
+
+JAVA_HOME=/usr/lib/jvm/java-11-openjdk
+KEYSTORE="${SIMULATOR_HOME}/etc/ssl/policy-keystore"
+KEYSTORE_PASSWD="Pol1cy_0nap"
+TRUSTSTORE="${SIMULATOR_HOME}/etc/ssl/policy-truststore"
+TRUSTSTORE_PASSWD="Pol1cy_0nap"
+
+${JAVA_HOME}/bin/java \
+    -cp "${SIMULATOR_HOME}/etc:${SIMULATOR_HOME}/lib/*" \
+    -Dlogback.configurationFile=${SIMULATOR_HOME}/etc/logback.xml \
+    -Djavax.net.ssl.keyStore="${KEYSTORE}" \
+    -Djavax.net.ssl.keyStorePassword="${KEYSTORE_PASSWD}" \
+    -Djavax.net.ssl.trustStore="${TRUSTSTORE}" \
+    -Djavax.net.ssl.trustStorePassword="${TRUSTSTORE_PASSWD}" \
+    org.onap.policy.models.simulators.Main \
+        ${SIMULATOR_HOME}/etc/parameters/simParameters.json
diff --git a/models-sim/policy-models-simulators/src/main/package/tarball/assembly.xml b/models-sim/policy-models-simulators/src/main/package/tarball/assembly.xml
new file mode 100644
index 000000000..8496fd3c6
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/package/tarball/assembly.xml
@@ -0,0 +1,57 @@
+<!--
+  ============LICENSE_START=======================================================
+  Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+  ================================================================================
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+  SPDX-License-Identifier: Apache-2.0
+  ============LICENSE_END=========================================================
+-->
+
+<assembly>
+    <id>tarball</id>
+    <formats>
+        <format>tar.gz</format>
+    </formats>
+    <includeBaseDirectory>false</includeBaseDirectory>
+    <dependencySets>
+        <dependencySet>
+            <useProjectArtifact>true</useProjectArtifact>
+            <outputDirectory>/lib</outputDirectory>
+            <unpack>false</unpack>
+            <scope>runtime</scope>
+            <includes>
+                <include>*:jar</include>
+            </includes>
+        </dependencySet>
+    </dependencySets>
+    <fileSets>
+        <fileSet>
+            <directory>${project.basedir}/src/main/resources</directory>
+            <includes>
+                <include>logback.xml</include>
+            </includes>
+            <outputDirectory>etc</outputDirectory>
+            <lineEnding>unix</lineEnding>
+        </fileSet>
+        <fileSet>
+            <directory>${project.basedir}/src/main/resources/ssl
+            </directory>
+            <includes>
+                <include>policy*</include>
+            </includes>
+            <outputDirectory>etc${file.separator}ssl</outputDirectory>
+            <lineEnding>keep</lineEnding>
+        </fileSet>
+    </fileSets>
+</assembly>
diff --git a/models-sim/policy-models-simulators/src/main/resources/logback.xml b/models-sim/policy-models-simulators/src/main/resources/logback.xml
new file mode 100644
index 000000000..da9821aef
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/resources/logback.xml
@@ -0,0 +1,56 @@
+<!--
+  ============LICENSE_START=======================================================
+  Copyright (C) 2020 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.
+
+  SPDX-License-Identifier: Apache-2.0
+  ============LICENSE_END=========================================================
+-->
+
+<configuration scan="true" scanPeriod="30 seconds" debug="false">
+
+    <contextName>Simulators</contextName>
+    <statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />
+    <property name="logDir" value="${POLICY_LOGS}" />
+
+    <appender name="DebugOut"
+        class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>${logDir}/debug.log</file>
+        <rollingPolicy
+            class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
+            <fileNamePattern>${logDir}/debug.%d{yyyy-MM-dd}.%i.log.zip
+            </fileNamePattern>
+            <maxFileSize>50MB</maxFileSize>
+            <maxHistory>10</maxHistory>
+            <totalSizeCap>500MB</totalSizeCap>
+        </rollingPolicy>
+        <encoder>
+            <Pattern>%d %contextName [%t] %level %logger{36} - %msg%n
+            </Pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="DebugOut" />
+    </root>
+
+    <logger name="org.eclipse.jetty" level="info" additivity="false">
+        <appender-ref ref="DebugOut" />
+    </logger>
+
+    <logger name="org.onap.policy.models.sim.dmaap" level="debug" additivity="false">
+        <appender-ref ref="DebugOut" />
+    </logger>
+
+</configuration>
diff --git a/models-sim/policy-models-simulators/src/main/resources/ssl/policy-keystore b/models-sim/policy-models-simulators/src/main/resources/ssl/policy-keystore
new file mode 100644
index 000000000..144caf252
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/resources/ssl/policy-keystore
diff --git a/models-sim/policy-models-simulators/src/main/resources/ssl/policy-truststore b/models-sim/policy-models-simulators/src/main/resources/ssl/policy-truststore
new file mode 100644
index 000000000..8834ac257
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/resources/ssl/policy-truststore
diff --git a/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/ClassRestServerParametersTest.java b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/ClassRestServerParametersTest.java
new file mode 100644
index 000000000..76637610c
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/ClassRestServerParametersTest.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.models.simulators;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import java.io.File;
+import org.junit.Test;
+import org.onap.policy.common.parameters.ValidationResult;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+
+public class ClassRestServerParametersTest {
+
+    @Test
+    public void testValidateString() throws CoderException {
+        // some fields missing
+        ValidationResult result = new ClassRestServerParameters().validate("InvalidParams");
+        assertFalse(result.isValid());
+        assertNotNull(result.getResult());
+
+        // everything populated
+        SimulatorParameters simParams = new StandardCoder()
+                        .decode(new File("src/test/resources/simParameters.json"), SimulatorParameters.class);
+        ClassRestServerParameters params = simParams.getRestServers().get(0);
+        assertNull(params.validate("ValidParams").getResult());
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/MainTest.java b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/MainTest.java
new file mode 100644
index 000000000..e9e8cbdec
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/MainTest.java
@@ -0,0 +1,256 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.models.simulators;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.io.FileNotFoundException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Properties;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+import javax.ws.rs.core.Response;
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
+import org.onap.policy.common.endpoints.http.client.HttpClient;
+import org.onap.policy.common.endpoints.http.client.HttpClientConfigException;
+import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
+import org.onap.policy.common.endpoints.http.server.HttpServletServer;
+import org.onap.policy.common.endpoints.http.server.internal.JettyJerseyServer;
+import org.onap.policy.common.utils.coder.Coder;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.network.NetworkUtil;
+
+public class MainTest {
+    private static final String PARAMETER_FILE = "simParameters.json";
+    private static final String HOST = "localhost";
+    private static final String EXPECTED_EXCEPTION = "expected exception";
+
+    private static Map<String, String> savedValues;
+
+    /**
+     * Saves system properties.
+     */
+    @BeforeClass
+    public static void setUpBeforeClass() {
+        savedValues = new HashMap<>();
+
+        for (String prop : List.of(JettyJerseyServer.SYSTEM_KEYSTORE_PASSWORD_PROPERTY_NAME,
+                        JettyJerseyServer.SYSTEM_KEYSTORE_PROPERTY_NAME,
+                        JettyJerseyServer.SYSTEM_TRUSTSTORE_PASSWORD_PROPERTY_NAME,
+                        JettyJerseyServer.SYSTEM_TRUSTSTORE_PROPERTY_NAME)) {
+
+            savedValues.put(prop, System.getProperty(prop));
+        }
+
+        System.setProperty(JettyJerseyServer.SYSTEM_KEYSTORE_PROPERTY_NAME, "src/test/resources/keystore-test");
+        System.setProperty(JettyJerseyServer.SYSTEM_KEYSTORE_PASSWORD_PROPERTY_NAME, "kstest");
+
+        System.setProperty(JettyJerseyServer.SYSTEM_TRUSTSTORE_PROPERTY_NAME, "src/test/resources/keystore-test");
+        System.setProperty(JettyJerseyServer.SYSTEM_TRUSTSTORE_PASSWORD_PROPERTY_NAME, "kstest");
+    }
+
+    /**
+     * Restores system properties.
+     */
+    @AfterClass
+    public static void tearDownAfterClass() {
+        for (Entry<String, String> ent : savedValues.entrySet()) {
+            if (ent.getValue() == null) {
+                System.getProperties().remove(ent.getKey());
+            } else {
+                System.setProperty(ent.getKey(), ent.getValue());
+            }
+        }
+    }
+
+    /**
+     * Shuts down the simulator instance.
+     */
+    @After
+    public void tearDown() {
+        Main main = Main.getInstance();
+        if (main != null && main.isAlive()) {
+            main.shutdown();
+        }
+    }
+
+    @Test
+    public void testConstructor() throws Exception {
+        assertThatIllegalArgumentException().isThrownBy(() -> new Main("invalidSimParameters.json"))
+                        .withMessage("invalid simulator parameters");
+    }
+
+    /**
+     * Verifies that all of the simulators are brought up and that HTTPS works with at
+     * least one of them.
+     */
+    @Test
+    public void testMain() throws Exception {
+        Main.main(new String[0]);
+        assertTrue(Main.getInstance() == null || !Main.getInstance().isAlive());
+
+        Main.main(new String[] {PARAMETER_FILE});
+
+        // don't need to wait long, because buildXxx() does the wait for us
+        for (int port = 6666; port <= 6670; ++port) {
+            assertTrue("simulator on port " + port, NetworkUtil.isTcpPortOpen(HOST, port, 1, 100));
+        }
+
+        // it's sufficient to verify that one of the simulators works
+        checkAai();
+    }
+
+    private void checkAai() throws HttpClientConfigException {
+        BusTopicParams params = BusTopicParams.builder().clientName("client").hostname(HOST).port(6666).useHttps(true)
+                        .allowSelfSignedCerts(true).basePath("aai").build();
+        HttpClient client = HttpClientFactoryInstance.getClientFactory().build(params);
+
+        Response response = client.get("/v8/network/generic-vnfs/generic-vnf/my-vnf");
+        assertEquals(200, response.getStatus());
+
+        String result = response.readEntity(String.class);
+        assertThat(result).contains("USUCP0PCOIL0110UJZZ01-vsrx");
+    }
+
+    /**
+     * Tests readParameters() when the file cannot be found.
+     */
+    @Test
+    public void testReadParametersNoFile() {
+        assertThatIllegalArgumentException().isThrownBy(() -> new Main("missing-file.json"))
+                        .withCauseInstanceOf(FileNotFoundException.class);
+    }
+
+    /**
+     * Tests readParameters() when the json cannot be decoded.
+     */
+    @Test
+    public void testReadParametersInvalidJson() throws CoderException {
+        Coder coder = mock(Coder.class);
+        when(coder.decode(any(String.class), any())).thenThrow(new CoderException(EXPECTED_EXCEPTION));
+
+        assertThatIllegalArgumentException().isThrownBy(() -> new Main(PARAMETER_FILE) {
+            @Override
+            protected Coder makeCoder() {
+                return coder;
+            }
+        }).withCauseInstanceOf(CoderException.class);
+    }
+
+    /**
+     * Tests buildRestServer() when the server port is not open.
+     */
+    @Test
+    public void testBuildRestServerNotOpen() {
+        HttpServletServer server = mock(HttpServletServer.class);
+
+        Main main = new Main(PARAMETER_FILE) {
+            @Override
+            protected HttpServletServer makeServer(Properties props) {
+                return server;
+            }
+
+            @Override
+            protected boolean isTcpPortOpen(String hostName, int port) throws InterruptedException {
+                return false;
+            }
+        };
+
+        assertThatThrownBy(main::start).hasCauseInstanceOf(IllegalStateException.class);
+    }
+
+    /**
+     * Tests buildRestServer() when the port checker is interrupted.
+     */
+    @Test
+    public void testBuildRestServerInterrupted() throws InterruptedException {
+        HttpServletServer server = mock(HttpServletServer.class);
+
+        Main main = new Main(PARAMETER_FILE) {
+            @Override
+            protected HttpServletServer makeServer(Properties props) {
+                return server;
+            }
+
+            @Override
+            protected boolean isTcpPortOpen(String hostName, int port) throws InterruptedException {
+                throw new InterruptedException(EXPECTED_EXCEPTION);
+            }
+        };
+
+        // run in another thread so we don't interrupt this thread
+        LinkedBlockingQueue<RuntimeException> queue = new LinkedBlockingQueue<>();
+        Thread thread = new Thread(() -> {
+            try {
+                main.start();
+            } catch (RuntimeException e) {
+                queue.add(e);
+            }
+        });
+
+        thread.setDaemon(true);
+        thread.start();
+
+        RuntimeException ex = queue.poll(5, TimeUnit.SECONDS);
+        assertNotNull(ex);
+        assertTrue(ex.getCause() instanceof IllegalStateException);
+        assertThat(ex.getCause()).hasMessageStartingWith("interrupted while building");
+    }
+
+    /**
+     * Tests buildTopicServer() when the provider class is invalid.
+     */
+    @Test
+    public void testBuildTopicServerInvalidProvider() {
+        assertThatThrownBy(() -> new Main("invalidTopicServer.json").start());
+    }
+
+    /**
+     * Tests buildTopicServer() when the sink is missing.
+     */
+    @Test
+    public void testBuildTopicServerNoSink() {
+        assertThatThrownBy(() -> new Main("missingSink.json").start());
+    }
+
+    /**
+     * Tests buildTopicServer() when the sink is missing.
+     */
+    @Test
+    public void testBuildTopicServerNoSource() {
+        assertThatThrownBy(() -> new Main("missingSource.json").start());
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/SimulatorParametersTest.java b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/SimulatorParametersTest.java
new file mode 100644
index 000000000..5294ca483
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/SimulatorParametersTest.java
@@ -0,0 +1,47 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.models.simulators;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import java.io.File;
+import org.junit.Test;
+import org.onap.policy.common.parameters.BeanValidationResult;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+
+public class SimulatorParametersTest {
+
+    @Test
+    public void testValidate() throws CoderException {
+        // some fields missing
+        BeanValidationResult result = new SimulatorParameters().validate("InvalidParams");
+        assertFalse(result.isValid());
+        assertNotNull(result.getResult());
+
+        // everything populated
+        SimulatorParameters params = new StandardCoder().decode(new File("src/test/resources/simParameters.json"),
+                        SimulatorParameters.class);
+        assertNull(params.validate("ValidParams").getResult());
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/TopicServerParametersTest.java b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/TopicServerParametersTest.java
new file mode 100644
index 000000000..2d182d8fb
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/TopicServerParametersTest.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.models.simulators;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import java.io.File;
+import org.junit.Test;
+import org.onap.policy.common.parameters.ValidationResult;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+
+public class TopicServerParametersTest {
+
+    @Test
+    public void testValidateString() throws CoderException {
+        // some fields missing
+        ValidationResult result = new TopicServerParameters().validate("InvalidParams");
+        assertFalse(result.isValid());
+        assertNotNull(result.getResult());
+
+        // everything populated
+        SimulatorParameters simParams = new StandardCoder()
+                        .decode(new File("src/test/resources/simParameters.json"), SimulatorParameters.class);
+        TopicServerParameters params = simParams.getTopicServers().get(0);
+        assertNull(params.validate("ValidParams").getResult());
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/test/resources/invalidSimParameters.json b/models-sim/policy-models-simulators/src/test/resources/invalidSimParameters.json
new file mode 100644
index 000000000..2c63c0851
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/resources/invalidSimParameters.json
@@ -0,0 +1,2 @@
+{
+}
diff --git a/models-sim/policy-models-simulators/src/test/resources/invalidTopicServer.json b/models-sim/policy-models-simulators/src/test/resources/invalidTopicServer.json
new file mode 100644
index 000000000..b3d31f6b4
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/resources/invalidTopicServer.json
@@ -0,0 +1,35 @@
+{
+    "dmaapProvider": {
+        "name": "DMaaP simulator",
+        "topicSweepSec": 300,
+        "restServerParameters": {
+
+        }
+    },
+    "topicSinks": [
+        {
+            "topic": "APPC-LCM-READ",
+            "servers": ["localhost"],
+            "port": 3905,
+            "topicCommInfrastructure": "DMAAP",
+            "https": true
+        }
+    ],
+    "topicSources": [
+        {
+            "topic": "APPC-LCM-WRITE",
+            "servers": ["localhost"],
+            "port": 3905,
+            "topicCommInfrastructure": "DMAAP",
+            "https": true
+        }
+    ],
+    "topicServers": [
+        {
+            "name": "Invalid Topic simulator",
+            "providerClass": "org.onap.policy.simulators.InvalidTopicServer",
+            "sink": "APPC-LCM-READ",
+            "source": "APPC-LCM-WRITE"
+        }
+    ]
+}
diff --git a/models-sim/policy-models-simulators/src/test/resources/keystore-test b/models-sim/policy-models-simulators/src/test/resources/keystore-test
new file mode 100644
index 000000000..5820e0f0c
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/resources/keystore-test
diff --git a/models-sim/policy-models-simulators/src/test/resources/logback-test.xml b/models-sim/policy-models-simulators/src/test/resources/logback-test.xml
new file mode 100644
index 000000000..e599a94a8
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/resources/logback-test.xml
@@ -0,0 +1,49 @@
+<!--
+  ============LICENSE_START=======================================================
+  Copyright (C) 2020 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.
+
+  SPDX-License-Identifier: Apache-2.0
+  ============LICENSE_END=========================================================
+-->
+
+<configuration scan="true" scanPeriod="30 seconds"
+    debug="false">
+
+    <contextName>Simulators</contextName>
+    <statusListener
+        class="ch.qos.logback.core.status.OnConsoleStatusListener" />
+
+    <!-- USE FOR STD OUT ONLY -->
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <Pattern>%d %contextName [%t] %level %logger{36} - %msg%n</Pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+
+    <logger name="org.eclipse.jetty" level="info"
+        additivity="false">
+        <appender-ref ref="STDOUT" />
+    </logger>
+
+    <logger name="org.onap.policy.models.sim.dmaap" level="debug"
+        additivity="false">
+        <appender-ref ref="STDOUT" />
+    </logger>
+
+</configuration>
diff --git a/models-sim/policy-models-simulators/src/test/resources/missingSink.json b/models-sim/policy-models-simulators/src/test/resources/missingSink.json
new file mode 100644
index 000000000..e7d63e04f
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/resources/missingSink.json
@@ -0,0 +1,26 @@
+{
+    "dmaapProvider": {
+        "name": "DMaaP simulator",
+        "topicSweepSec": 300,
+        "restServerParameters": {
+
+        }
+    },
+    "topicSources": [
+        {
+            "topic": "APPC-LCM-WRITE",
+            "servers": ["localhost"],
+            "port": 3905,
+            "topicCommInfrastructure": "DMAAP",
+            "https": true
+        }
+    ],
+    "topicServers": [
+        {
+            "name": "APPC-LCM simulator",
+            "providerClass": "org.onap.policy.simulators.AppcLcmTopicServer",
+            "sink": "APPC-LCM-READ",
+            "source": "APPC-LCM-WRITE"
+        }
+    ]
+}
diff --git a/models-sim/policy-models-simulators/src/test/resources/missingSource.json b/models-sim/policy-models-simulators/src/test/resources/missingSource.json
new file mode 100644
index 000000000..0f02e4095
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/resources/missingSource.json
@@ -0,0 +1,26 @@
+{
+    "dmaapProvider": {
+        "name": "DMaaP simulator",
+        "topicSweepSec": 300,
+        "restServerParameters": {
+
+        }
+    },
+    "topicSinks": [
+        {
+            "topic": "APPC-LCM-READ",
+            "servers": ["localhost"],
+            "port": 3905,
+            "topicCommInfrastructure": "DMAAP",
+            "https": true
+        }
+    ],
+    "topicServers": [
+        {
+            "name": "APPC-LCM simulator",
+            "providerClass": "org.onap.policy.simulators.AppcLcmTopicServer",
+            "sink": "APPC-LCM-READ",
+            "source": "APPC-LCM-WRITE"
+        }
+    ]
+}
diff --git a/models-sim/policy-models-simulators/src/test/resources/simParameters.json b/models-sim/policy-models-simulators/src/test/resources/simParameters.json
new file mode 100644
index 000000000..c7abb2973
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/resources/simParameters.json
@@ -0,0 +1,95 @@
+{
+    "dmaapProvider": {
+        "name": "DMaaP simulator",
+        "topicSweepSec": 300,
+        "restServerParameters": {
+
+        }
+    },
+    "restServers": [
+        {
+            "name": "DMaaP simulator",
+            "providerClass": "org.onap.policy.models.sim.dmaap.rest.DmaapSimRestControllerV1",
+            "host": "localhost",
+            "port": 3905,
+            "https": true
+        },
+        {
+            "name": "A&AI simulator",
+            "providerClass": "org.onap.policy.simulators.AaiSimulatorJaxRs",
+            "host": "localhost",
+            "port": 6666,
+            "https": true
+        },
+        {
+            "name": "Guard simulator",
+            "providerClass": "org.onap.policy.simulators.GuardSimulatorJaxRs",
+            "host": "localhost",
+            "port": 6667,
+            "https": true
+        },
+        {
+            "name": "SDNC simulator",
+            "providerClass": "org.onap.policy.simulators.SdncSimulatorJaxRs",
+            "host": "localhost",
+            "port": 6668,
+            "https": true
+        },
+        {
+            "name": "SO simulator",
+            "providerClass": "org.onap.policy.simulators.SoSimulatorJaxRs",
+            "host": "localhost",
+            "port": 6669,
+            "https": true
+        },
+        {
+            "name": "VFC simulator",
+            "providerClass": "org.onap.policy.simulators.VfcSimulatorJaxRs",
+            "host": "localhost",
+            "port": 6670,
+            "https": true
+        }
+    ],
+    "topicSinks": [
+        {
+            "topic": "APPC-CL",
+            "servers": ["localhost"],
+            "topicCommInfrastructure": "DMAAP",
+            "useHttps": true
+        },
+        {
+            "topic": "APPC-LCM-READ",
+            "servers": ["localhost"],
+            "topicCommInfrastructure": "DMAAP",
+            "useHttps": true
+        }
+    ],
+    "topicSources": [
+        {
+            "topic": "APPC-CL",
+            "servers": ["localhost"],
+            "topicCommInfrastructure": "DMAAP",
+            "useHttps": true
+        },
+        {
+            "topic": "APPC-LCM-WRITE",
+            "servers": ["localhost"],
+            "topicCommInfrastructure": "DMAAP",
+            "useHttps": true
+        }
+    ],
+    "topicServers": [
+        {
+            "name": "APPC Legacy simulator",
+            "providerClass": "org.onap.policy.simulators.AppcLegacyTopicServer",
+            "sink": "APPC-CL",
+            "source": "APPC-CL"
+        },
+        {
+            "name": "APPC-LCM simulator",
+            "providerClass": "org.onap.policy.simulators.AppcLcmTopicServer",
+            "sink": "APPC-LCM-READ",
+            "source": "APPC-LCM-WRITE"
+        }
+    ]
+}