============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">
+<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>
<artifactId>openpojo</artifactId>
</dependency>
+ <dependency>
+ <groupId>org.projectlombok</groupId>
+ <artifactId>lombok</artifactId>
+ <scope>provided</scope>
+ </dependency>
+
</dependencies>
<build>
--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP PAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2019 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.endpoints.event.comm.client;
+
+
+import java.util.List;
+
+import lombok.Getter;
+
+import org.onap.policy.common.endpoints.event.comm.TopicEndpoint;
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+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.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Client for sending messages to a Topic using TopicSink.
+ */
+public class TopicSinkClient {
+ private static final Logger logger = LoggerFactory.getLogger(TopicSinkClient.class);
+
+ /**
+ * Coder used to encode messages being sent to the topic.
+ */
+ private static final Coder CODER = new StandardCoder();
+
+ /**
+ * Topic to which messages are published.
+ */
+ @Getter
+ private final String topic;
+
+ /**
+ * Where messages are published.
+ */
+ private final TopicSink sink;
+
+ /**
+ * Constructs the object.
+ *
+ * @param topic topic to which messages should be published
+ * @throws TopicSinkClientException if the topic does not exist
+ */
+ public TopicSinkClient(final String topic) throws TopicSinkClientException {
+ this.topic = topic;
+
+ final List<TopicSink> lst = getTopicSinks(topic);
+ if (lst.isEmpty()) {
+ throw new TopicSinkClientException("no sinks for topic: " + topic);
+ }
+
+ this.sink = lst.get(0);
+ }
+
+ /**
+ * Sends a message to the topic, after encoding the message as json.
+ *
+ * @param message message to be encoded and sent
+ * @return {@code true} if the message was successfully sent/enqueued, {@code false} otherwise
+ */
+ public boolean send(final Object message) {
+ try {
+ final String json = CODER.encode(message);
+ return sink.send(json);
+
+ } catch (RuntimeException | CoderException e) {
+ logger.warn("send to {} failed because of {}", topic, e.getMessage(), e);
+ return false;
+ }
+ }
+
+ // the remaining methods are wrappers that can be overridden by junit tests
+
+ /**
+ * Gets the sinks for a given topic.
+ *
+ * @param topic the topic of interest
+ * @return the sinks for the topic
+ */
+ protected List<TopicSink> getTopicSinks(final String topic) {
+ return TopicEndpoint.manager.getTopicSinks(topic);
+ }
+}
--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP PAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2019 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.endpoints.event.comm.client;
+
+/**
+ * Exception thrown by TopicSink client classes.
+ */
+public class TopicSinkClientException extends Exception {
+ private static final long serialVersionUID = 1L;
+
+ public TopicSinkClientException() {
+ super();
+ }
+
+ public TopicSinkClientException(final String message) {
+ super(message);
+ }
+
+ public TopicSinkClientException(final Throwable cause) {
+ super(cause);
+ }
+
+ public TopicSinkClientException(final String message, final Throwable cause) {
+ super(message, cause);
+ }
+
+ public TopicSinkClientException(final String message, final Throwable cause, final boolean enableSuppression,
+ final boolean writableStackTrace) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ }
+
+}
--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP PAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2019 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.endpoints.event.comm.client;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.onap.policy.common.utils.test.ExceptionsTester;
+
+public class TopicSinkClientExceptionTest {
+
+ @Test
+ public void test() {
+ assertEquals(5, new ExceptionsTester().test(TopicSinkClientException.class));
+ }
+}
--- /dev/null
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP PAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2019 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.common.endpoints.event.comm.client;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertSame;
+import static org.mockito.Matchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Properties;
+import java.util.concurrent.atomic.AtomicReference;
+
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.internal.util.reflection.Whitebox;
+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
+import org.onap.policy.common.endpoints.event.comm.TopicEndpoint;
+import org.onap.policy.common.endpoints.event.comm.TopicListener;
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+
+public class TopicSinkClientTest {
+ private static final String SINK_FIELD_NAME = "sink";
+ private static final String TOPIC = "my-topic";
+
+ private TopicSinkClient client;
+ private TopicSink sink;
+ private List<TopicSink> sinks;
+
+ /**
+ * Creates mocks and an initial client object.
+ *
+ * @throws Exception if an error occurs
+ */
+ @Before
+ public void setUp() throws Exception {
+ sink = mock(TopicSink.class);
+ when(sink.send(anyString())).thenReturn(true);
+
+ sinks = Arrays.asList(sink, null);
+
+ client = new TopicSinkClient2(TOPIC);
+ }
+
+ @AfterClass
+ public static void tearDown() throws Exception {
+ // clear all topics after the tests
+ TopicEndpoint.manager.shutdown();
+ }
+
+ /**
+ * Uses a real NO-OP topic sink.
+ */
+ @Test
+ public void testGetTopicSinks() throws Exception {
+ // clear all topics and then configure one topic
+ TopicEndpoint.manager.shutdown();
+
+ final Properties props = new Properties();
+ props.setProperty("noop.sink.topics", TOPIC);
+ TopicEndpoint.manager.addTopicSinks(props);
+
+ sink = TopicEndpoint.manager.getNoopTopicSink(TOPIC);
+ assertNotNull(sink);
+
+ final AtomicReference<String> evref = new AtomicReference<>(null);
+
+ sink.register(new TopicListener() {
+ @Override
+ public void onTopicEvent(final CommInfrastructure infra, final String topic, final String event) {
+ evref.set(event);
+ }
+ });
+
+ sink.start();
+
+ client = new TopicSinkClient(TOPIC);
+ client.send(100);
+
+ assertEquals("100", evref.get());
+ }
+
+ @Test
+ public void testTopicSinkClient_testGetTopic() {
+ assertEquals(TOPIC, client.getTopic());
+ assertSame(sink, Whitebox.getInternalState(client, SINK_FIELD_NAME));
+
+ // unknown topic -> should throw exception
+ sinks = new LinkedList<>();
+ assertThatThrownBy(() -> new TopicSinkClient2(TOPIC)).isInstanceOf(TopicSinkClientException.class)
+ .hasMessage("no sinks for topic: my-topic");
+ }
+
+ @Test
+ public void testSend() throws Exception {
+ client.send(Arrays.asList("abc", "def"));
+ verify(sink).send("['abc','def']".replace('\'', '"'));
+
+ // sink send fails
+ when(sink.send(anyString())).thenReturn(false);
+ assertFalse(client.send("ghi"));
+
+ // sink send throws an exception
+ final RuntimeException ex = new RuntimeException("expected exception");
+ when(sink.send(anyString())).thenThrow(ex);
+ assertFalse(client.send("jkl"));
+ }
+
+ /**
+ * TopicSinkClient with some overrides.
+ */
+ private class TopicSinkClient2 extends TopicSinkClient {
+
+ public TopicSinkClient2(final String topic) throws TopicSinkClientException {
+ super(topic);
+ }
+
+ @Override
+ protected List<TopicSink> getTopicSinks(final String topic) {
+ return sinks;
+ }
+ }
+}
Code Review / policy / common.git / commitdiff