Enhance gRPC Simulator:

1.Make gRPC Simulator respond to different actions by generating the response on the basis of received request.
2.Include CDS Simulator in policy-models-simulator
3.Introduce a packages module in models-sim to package the docker image of policy-models-simulator which includes all the simulators(pdp-simulator to be added in future) in models.
4.The Jenkins job changes to push this newly created Docker image may be taken in the next release.

Issue-ID: POLICY-2828
Signed-off-by: puthuparambil.aditya <aditya.puthuparambil@bell.ca>
Change-Id: Ic1663bbe8205c64a8133ea0b0c28152f21d0732a

5 files changed, 176 insertions, 2 deletions

diff --git a/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/CdsServerParameters.java b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/CdsServerParameters.java
new file mode 100644
index 000000000..97dc35449
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/main/java/org/onap/policy/models/simulators/CdsServerParameters.java
@@ -0,0 +1,97 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2020 Bell Canada.
+ * ================================================================================
+ * 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.nio.charset.StandardCharsets;
+import java.util.Base64;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import org.onap.policy.common.parameters.GroupValidationResult;
+import org.onap.policy.common.parameters.ParameterGroup;
+import org.onap.policy.common.parameters.ParameterRuntimeException;
+import org.onap.policy.common.parameters.annotations.Max;
+import org.onap.policy.common.parameters.annotations.Min;
+import org.onap.policy.common.parameters.annotations.NotNull;
+
+@Getter
+@Setter
+@ToString
+public class CdsServerParameters implements ParameterGroup {
+
+    // Port range constants
+    private static final int MIN_USER_PORT = 1024;
+    private static final int MAX_USER_PORT = 65535;
+
+    private static final String SERVER_PROPERTIES_TYPE = "CDS gRPC Server Properties";
+
+    // CDS carrier properties
+
+    // Request timeout in seconds
+    @Min(value = 1)
+    private int timeout;
+
+    @Min(value = MIN_USER_PORT)
+    @Max(value = MAX_USER_PORT)
+    private int port;
+
+    @Min(value = 0)
+    private int successRepeatCount;
+
+    private int requestedResponseDelayMs;
+
+    @NotNull
+    private String host;
+
+    @NotNull
+    private String username;
+
+    @NotNull
+    private String password;
+
+    @NotNull
+    private String resourceLocation;
+
+    @Override
+    public String getName() {
+        return SERVER_PROPERTIES_TYPE;
+    }
+
+    @Override
+    public void setName(final String name) {
+        throw new ParameterRuntimeException("The name of this ParameterGroup implementation is always " + getName());
+    }
+
+    @Override
+    public GroupValidationResult validate() {
+        return new GroupValidationResult(this);
+    }
+
+    /**
+     * Generate base64-encoded Authorization header from username and password.
+     *
+     * @return Base64 encoded string
+     */
+    public String getBasicAuth() {
+        String encodedAuth = Base64.getEncoder().encodeToString(
+                String.format("%s:%s", getUsername(), getPassword()).getBytes(StandardCharsets.UTF_8));
+        // Return encoded basic auth header
+        return "Basic " + encodedAuth;
+    }
+}
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
index ed9ade562..a0fafbc9b 100644
--- 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
@@ -1,6 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2020 Bell Canada. 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.
@@ -21,6 +22,7 @@
 package org.onap.policy.models.simulators;
 
 import java.io.FileNotFoundException;
+import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.util.HashMap;
 import java.util.List;
@@ -48,6 +50,7 @@ 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.CdsSimulator;
 import org.onap.policy.simulators.TopicServer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -87,6 +90,12 @@ public class Main extends ServiceManagerContainer {
         AtomicReference<DmaapSimProvider> provRef = new AtomicReference<>();
         addAction(provName, () -> provRef.set(buildDmaapProvider(dmaapProv)), () -> provRef.get().shutdown());
 
+        CdsServerParameters cdsServer = params.getGrpcServer();
+
+        // Cds Simulator
+        AtomicReference<CdsSimulator> cdsSim = new AtomicReference<>();
+        addAction(cdsServer.getName(), () -> cdsSim.set(buildCdsSimulator(cdsServer)), () -> cdsSim.get().stop());
+
         // REST server simulators
         // @formatter:off
         for (ClassRestServerParameters restsim : params.getRestServers()) {
@@ -173,10 +182,17 @@ public class Main extends ServiceManagerContainer {
         DmaapSimProvider prov = new DmaapSimProvider(params);
         DmaapSimProvider.setInstance(prov);
         prov.start();
-
         return prov;
     }
 
+    private CdsSimulator buildCdsSimulator(CdsServerParameters params) throws IOException {
+        CdsSimulator cdsSimulator = new CdsSimulator(params.getHost(), params.getPort(), params.getResourceLocation(),
+            params.getSuccessRepeatCount(), params.getRequestedResponseDelayMs());
+        cdsSimulator.start();
+        return cdsSimulator;
+    }
+
+
     private TopicSink startSink(TopicParameters params) {
         TopicSink sink = TopicEndpointManager.getManager().addTopicSinks(List.of(params)).get(0);
         sink.start();
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
index c47ff8876..788829f36 100644
--- 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
@@ -3,6 +3,7 @@
  * ONAP
  * ================================================================================
  * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2020 Bell Canada. 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.
@@ -44,6 +45,8 @@ public class SimulatorParameters {
      */
     private DmaapSimParameterGroup dmaapProvider;
 
+    private CdsServerParameters grpcServer;
+
     /**
      * Parameters for the REST server simulators that are to be started.
      */
diff --git a/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/CdsServerParametersTest.java b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/CdsServerParametersTest.java
new file mode 100644
index 000000000..03aae8e61
--- /dev/null
+++ b/models-sim/policy-models-simulators/src/test/java/org/onap/policy/models/simulators/CdsServerParametersTest.java
@@ -0,0 +1,46 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2020 Bell Canada.
+ * ================================================================================
+ * 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 static org.junit.Assert.assertTrue;
+
+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 CdsServerParametersTest {
+    @Test
+    public void testValidateString() throws CoderException {
+        // some fields missing
+        ValidationResult result = new CdsServerParameters().validate();
+        assertFalse(result.isValid());
+        assertNotNull(result.getResult());
+
+        // everything populated
+        SimulatorParameters simParams = new StandardCoder()
+            .decode(new File("src/test/resources/simParameters.json"), SimulatorParameters.class);
+        CdsServerParameters params = simParams.getGrpcServer();
+        assertTrue(params.validate().isValid());
+    }
+}
diff --git a/models-sim/policy-models-simulators/src/test/resources/simParameters.json b/models-sim/policy-models-simulators/src/test/resources/simParameters.json
index 33821a538..1d1c0aad7 100644
--- a/models-sim/policy-models-simulators/src/test/resources/simParameters.json
+++ b/models-sim/policy-models-simulators/src/test/resources/simParameters.json
@@ -109,5 +109,17 @@
             "sink": "SDNR-CL",
             "source": "SDNR-CL-RSP"
         }
-    ]
+    ],
+    "grpcServer": {
+        "name": "CDS simulator",
+        "providerClass": "org.onap.policy.simulators.CdsSimulator",
+        "host": "0.0.0.0",
+        "port": 6680,
+        "timeout": 30,
+        "username": "ccsdkapps",
+        "password": "ccsdkapps",
+        "resourceLocation": "org/onap/policy/simulators/cds/",
+        "successRepeatCount": 0,
+        "requestedResponseDelayMs": 0
+    }
 }