1 files changed, 132 insertions, 0 deletions
diff --git a/dcae-analytics-cdap-plugins/src/main/java/org/openecomp/dcae/apod/analytics/cdap/plugins/streaming/dmaap/MockDMaaPMRReceiver.java b/dcae-analytics-cdap-plugins/src/main/java/org/openecomp/dcae/apod/analytics/cdap/plugins/streaming/dmaap/MockDMaaPMRReceiver.java
new file mode 100644
index 0000000..a318406
--- /dev/null
+++ b/dcae-analytics-cdap-plugins/src/main/java/org/openecomp/dcae/apod/analytics/cdap/plugins/streaming/dmaap/MockDMaaPMRReceiver.java
@@ -0,0 +1,132 @@
+/*
+ * ===============================LICENSE_START======================================
+ *  dcae-analytics
+ * ================================================================================
+ *    Copyright © 2017 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.openecomp.dcae.apod.analytics.cdap.plugins.streaming.dmaap;
+
+import co.cask.cdap.api.data.format.StructuredRecord;
+import com.fasterxml.jackson.core.type.TypeReference;
+import org.apache.spark.storage.StorageLevel;
+import org.apache.spark.streaming.receiver.Receiver;
+import org.openecomp.dcae.apod.analytics.cdap.plugins.domain.config.dmaap.DMaaPMRSourcePluginConfig;
+import org.openecomp.dcae.apod.analytics.cdap.plugins.utils.CDAPPluginUtils;
+import org.openecomp.dcae.apod.analytics.cdap.plugins.utils.DMaaPSourceConfigMapper;
+import org.openecomp.dcae.apod.analytics.common.exception.DCAEAnalyticsRuntimeException;
+import org.openecomp.dcae.apod.analytics.dmaap.DMaaPMRFactory;
+import org.openecomp.dcae.apod.analytics.dmaap.service.subscriber.DMaaPMRSubscriber;
+import org.openecomp.dcae.apod.analytics.model.domain.cef.EventListener;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import static org.openecomp.dcae.apod.analytics.model.util.AnalyticsModelJsonUtils.readValue;
+import static org.openecomp.dcae.apod.analytics.model.util.AnalyticsModelJsonUtils.writeValueAsString;
+
+/**
+ * DMaaP MR Receiver which calls DMaaP MR Topic and stores structured records
+ * <p>
+ * @author Rajiv Singla . Creation Date: 1/19/2017.
+ */
+public class MockDMaaPMRReceiver extends Receiver<StructuredRecord> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(MockDMaaPMRReceiver.class);
+    private static final long serialVersionUID = 1L;
+
+    private static final String MOCK_MESSAGE_FILE_LOCATION = "ves_mock_messages.json";
+    private static final TypeReference<List<EventListener>> EVENT_LISTENER_TYPE_REFERENCE =
+            new TypeReference<List<EventListener>>() {
+            };
+
+    private final DMaaPMRSourcePluginConfig pluginConfig;
+
+    public MockDMaaPMRReceiver(final StorageLevel storageLevel, final DMaaPMRSourcePluginConfig pluginConfig) {
+        super(storageLevel);
+        this.pluginConfig = pluginConfig;
+        LOG.debug("Created DMaaP MR Receiver instance with plugin Config: {}", pluginConfig);
+    }
+
+    @Override
+    public void onStart() {
+
+        // create DMaaP MR Subscriber
+        final DMaaPMRSubscriber subscriber =
+                DMaaPMRFactory.create().createSubscriber(DMaaPSourceConfigMapper.map(pluginConfig));
+        storeStructuredRecords(subscriber);
+
+    }
+
+    @Override
+    public void onStop() {
+        LOG.debug("Stopping DMaaP MR Receiver with plugin config: {}", pluginConfig);
+    }
+
+    /**
+     * Fetches records from DMaaP MR Subscriber and store them as structured records
+     *
+     * @param subscriber DMaaP MR Subscriber Instance
+     */
+    public void storeStructuredRecords(final DMaaPMRSubscriber subscriber) {
+
+        LOG.debug("DMaaP MR Receiver start fetching messages from DMaaP MR Topic");
+        
+        try (InputStream resourceAsStream =
+                     Thread.currentThread().getContextClassLoader().getResourceAsStream(MOCK_MESSAGE_FILE_LOCATION)) {
+
+            if (resourceAsStream == null) {
+                LOG.error("Unable to find file at location: {}", MOCK_MESSAGE_FILE_LOCATION);
+                throw new DCAEAnalyticsRuntimeException("Unable to find file", LOG, new FileNotFoundException());
+            }
+
+            List<EventListener> eventListeners = readValue(resourceAsStream, EVENT_LISTENER_TYPE_REFERENCE);
+
+            final int totalMessageCount = eventListeners.size();
+            LOG.debug("Mock message count to be written to cdap stream: ()", totalMessageCount);
+
+            int i = 1;
+            for (EventListener eventListener : eventListeners) {
+                if (isStopped()) {
+                    return;
+                }
+                final String eventListenerString = writeValueAsString(eventListener);
+                LOG.debug("=======>> Writing message to cdap stream no: {} of {}", i, totalMessageCount);
+                store(CDAPPluginUtils.createDMaaPMRResponseStructuredRecord(eventListenerString));
+                i++;
+                try {
+                    TimeUnit.MILLISECONDS.sleep(pluginConfig.getPollingInterval());
+                } catch (InterruptedException e) {
+                    LOG.error("Error while sleeping");
+                    throw new DCAEAnalyticsRuntimeException("Error while sleeping", LOG, e);
+                }
+
+            }
+
+            LOG.debug("Finished writing mock messages to CDAP Stream");
+
+        } catch (IOException e) {
+            LOG.error("Error while parsing json file");
+            throw new DCAEAnalyticsRuntimeException("Error while parsing mock json file", LOG, e);
+        }
+    }
+
+}