GRPC support for APEX-CDS interaction

Change-Id: I586153244dbd97a41e9b9d616ee9a84327b7c2da
Issue-ID: POLICY-1656
Signed-off-by: a.sreekumar <ajith.sreekumar@est.tech>

4 files changed, 303 insertions, 0 deletions

diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/ApexGrpcConsumerTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/ApexGrpcConsumerTest.java
new file mode 100644
index 000000000..dc5cc3809
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/ApexGrpcConsumerTest.java
@@ -0,0 +1,93 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation.
+ * ================================================================================
+ * 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.apex.plugins.event.carrier.grpc;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.apex.service.engine.event.ApexEventException;
+import org.onap.policy.apex.service.engine.event.ApexEventReceiver;
+import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerParameters;
+import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerPeeredMode;
+
+public class ApexGrpcConsumerTest {
+    ApexGrpcConsumer grpcConsumer = null;
+    EventHandlerParameters consumerParameters = null;
+    ApexEventReceiver incomingEventReceiver = null;
+
+    private static final String GRPC_CONSUMER_ERROR_MSG =
+        "A gRPC Consumer may not be specified. Only sending events is possible using gRPC";
+
+    /**
+     * Set up testing.
+     *
+     * @throws ApexEventException on test set up errors.
+     */
+    @Before
+    public void setUp() throws ApexEventException {
+        grpcConsumer = new ApexGrpcConsumer();
+        consumerParameters = new EventHandlerParameters();
+        consumerParameters.setCarrierTechnologyParameters(new GrpcCarrierTechnologyParameters() {});
+    }
+
+    @Test
+    public void testInit() {
+        assertThatThrownBy(() -> {
+            grpcConsumer.init("TestApexGrpcConsumer", consumerParameters, incomingEventReceiver);
+        }).hasMessage(GRPC_CONSUMER_ERROR_MSG);
+    }
+
+    @Test
+    public void testStart() {
+        assertThatThrownBy(() -> {
+            grpcConsumer.start();
+        }).hasMessage(GRPC_CONSUMER_ERROR_MSG);
+    }
+
+    @Test
+    public void testGetName() {
+        assertEquals(null, new ApexGrpcConsumer().getName());
+    }
+
+    @Test
+    public void testGetPeeredReference() {
+        assertThatThrownBy(() -> {
+            grpcConsumer.getPeeredReference(EventHandlerPeeredMode.REQUESTOR);
+        }).hasMessage(GRPC_CONSUMER_ERROR_MSG);
+    }
+
+    @Test
+    public void testSetPeeredReference() {
+        assertThatThrownBy(() -> {
+            grpcConsumer.setPeeredReference(null, null);
+        }).hasMessage(GRPC_CONSUMER_ERROR_MSG);
+    }
+
+    @Test()
+    public void testStop() {
+        assertThatThrownBy(() -> {
+            new ApexGrpcConsumer().stop();
+        }).hasMessage(GRPC_CONSUMER_ERROR_MSG);
+    }
+
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/ApexGrpcProducerTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/ApexGrpcProducerTest.java
new file mode 100644
index 000000000..53d191e14
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/ApexGrpcProducerTest.java
@@ -0,0 +1,98 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation.
+ * ================================================================================
+ * 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.apex.plugins.event.carrier.grpc;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.mockito.Mockito.spy;
+
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import org.assertj.core.api.Assertions;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.runners.MockitoJUnitRunner;
+import org.onap.policy.apex.service.engine.event.ApexEventException;
+import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerParameters;
+import org.onap.policy.cds.client.CdsProcessorGrpcClient;
+
+@RunWith(MockitoJUnitRunner.class)
+public class ApexGrpcProducerTest {
+    private static final String HOST = "localhost";
+    @Mock
+    private CdsProcessorGrpcClient grpcClient;
+    private ApexGrpcProducer apexGrpcProducer = spy(new ApexGrpcProducer());
+    @Mock
+    private EventHandlerParameters eventHandlerParameters;
+
+    /**
+     * Set up testing.
+     *
+     * @throws ApexEventException on test set up errors.
+     */
+    @Before
+    public void setUp() throws ApexEventException {
+        populateEventHandlerParameters(HOST, 5);
+    }
+
+    @Test(expected = ApexEventException.class)
+    public void testInit_fail() throws ApexEventException {
+        apexGrpcProducer.init("TestApexGrpcProducer", new EventHandlerParameters());
+    }
+
+    @Test
+    public void testInit_pass() {
+        // should not throw an exception
+        Assertions.assertThatCode(() -> apexGrpcProducer.init("TestApexGrpcProducer", eventHandlerParameters))
+            .doesNotThrowAnyException();
+    }
+
+    @Test
+    public void testStop() throws ApexEventException {
+        apexGrpcProducer.init("TestApexGrpcProducer", eventHandlerParameters);
+        // should not throw an exception
+        Assertions.assertThatCode(() -> apexGrpcProducer.stop()).doesNotThrowAnyException();
+    }
+
+    @Test
+    public void testSendEvent() throws ApexEventException {
+        apexGrpcProducer.init("TestApexGrpcProducer", eventHandlerParameters);
+        assertThatThrownBy(() -> {
+            apexGrpcProducer.sendEvent(123, null, "grpcEvent",
+                Files.readString(Paths.get("src/test/resources/executionServiceInputEvent.json")));
+        }).hasMessageContaining("UNAVAILABLE: io exception");
+    }
+
+    private void populateEventHandlerParameters(String host, int timeout) {
+        eventHandlerParameters = new EventHandlerParameters();
+        GrpcCarrierTechnologyParameters params = new GrpcCarrierTechnologyParameters();
+        params.setLabel("GRPC");
+        params.setEventProducerPluginClass(ApexGrpcProducer.class.getName());
+        params.setEventConsumerPluginClass(ApexGrpcConsumer.class.getName());
+        params.setHost(host);
+        params.setPort(3214);
+        params.setUsername("dummyUser");
+        params.setPassword("dummyPassword");
+        params.setTimeout(timeout);
+        eventHandlerParameters.setCarrierTechnologyParameters(params);
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/GrpcCarrierTechnologyParametersTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/GrpcCarrierTechnologyParametersTest.java
new file mode 100644
index 000000000..a3994c29e
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/java/org/onap/policy/apex/plugins/event/carrier/grpc/GrpcCarrierTechnologyParametersTest.java
@@ -0,0 +1,87 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation.
+ * ================================================================================
+ * 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.apex.plugins.event.carrier.grpc;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.common.parameters.GroupValidationResult;
+
+public class GrpcCarrierTechnologyParametersTest {
+
+    private static final String USERNAME = "username";
+    private static final String PASSWORD = "password";
+    private static final String HOST = "localhost";
+
+    private GrpcCarrierTechnologyParameters params;
+
+    @Before
+    public void setUp() {
+        params = new GrpcCarrierTechnologyParameters();
+    }
+
+    @Test
+    public void testGrpcCarrierTechnologyParameters_invalid() {
+        GroupValidationResult result = params.validate();
+        assertFalse(result.isValid());
+        assertTrue(result.getResult().contains("field \"timeout\" type \"int\" value \"0\" INVALID, must be >= 1"));
+        assertTrue(result.getResult().contains("field \"port\" type \"int\" value \"0\" INVALID, must be >= 1024"));
+        assertTrue(
+            result.getResult().contains("field \"host\" type \"java.lang.String\" value \"null\" INVALID, is null"));
+        assertTrue(result.getResult()
+            .contains("field \"username\" type \"java.lang.String\" value \"null\" INVALID, is null"));
+        assertTrue(result.getResult()
+            .contains("field \"password\" type \"java.lang.String\" value \"null\" INVALID, is null"));
+        assertTrue(result.getResult().contains(""));
+        assertTrue(result.getResult().contains(""));
+    }
+
+    @Test
+    public void testGrpcCarrierTechnologyParameters_valid() {
+        assertEquals("GRPC", params.getName());
+        assertEquals(ApexGrpcConsumer.class.getName(), params.getEventConsumerPluginClass());
+        assertEquals(ApexGrpcProducer.class.getName(), params.getEventProducerPluginClass());
+
+        params.setHost(HOST);
+        params.setPassword(PASSWORD);
+        params.setPort(2233);
+        params.setTimeout(1000);
+        params.setUsername(USERNAME);
+        GroupValidationResult result = params.validate();
+        assertTrue(result.isValid());
+    }
+
+    @Test
+    public void testGrpcCarrierTechnologyParameters_invalid_values() {
+        params.setHost(HOST);
+        params.setPassword(PASSWORD);
+        params.setTimeout(1000);
+        params.setUsername(USERNAME);
+
+        params.setPort(23); // invalid value
+        GroupValidationResult result = params.validate();
+        assertFalse(result.isValid());
+        assertTrue(result.getResult().contains("field \"port\" type \"int\" value \"23\" INVALID, must be >= 1024"));
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/resources/executionServiceInputEvent.json b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/resources/executionServiceInputEvent.json
new file mode 100644
index 000000000..1054af14a
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-grpc/src/test/resources/executionServiceInputEvent.json
@@ -0,0 +1,25 @@
+{
+  "actionIdentifiers": {
+    "actionName": "actionName",
+    "blueprintName": "bluePrintName",
+    "blueprintVersion": "1.0.0",
+    "mode": "sync"
+  },
+  "commonHeader": {
+    "originatorId": "sdnc",
+    "requestId": "1234567",
+    "subRequestId": "subReqId"
+  },
+  "payload": {
+    "config-assign-request": {
+      "resolution-key": "RES-KEY",
+      "config-assign-properties": {
+        "service-instance-id": "sid12",
+        "pnf-id": "pnf-id",
+        "pnf-address": "1.2.3.4",
+        "service-uuid": "service-uuid",
+        "customization-uuid": "customization-uuid"
+      }
+    }
+  }
+}