X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=policy-agent%2Fsrc%2Fmain%2Fjava%2Forg%2Foransc%2Fpolicyagent%2Fdmaap%2FDmaapMessageConsumerImpl.java;h=bd3ba69f9c43eee75cad948aaea5d26c5b044de4;hb=refs%2Fchanges%2F69%2F2369%2F3;hp=30444e201ef8cf85e12d7c34b1096d3222016667;hpb=777b07b0c5ee62ebee9526e634bee7ae3f82640c;p=nonrtric.git

diff --git a/policy-agent/src/main/java/org/oransc/policyagent/dmaap/DmaapMessageConsumerImpl.java b/policy-agent/src/main/java/org/oransc/policyagent/dmaap/DmaapMessageConsumerImpl.java
index 30444e20..bd3ba69f 100644
--- a/policy-agent/src/main/java/org/oransc/policyagent/dmaap/DmaapMessageConsumerImpl.java
+++ b/policy-agent/src/main/java/org/oransc/policyagent/dmaap/DmaapMessageConsumerImpl.java
@@ -1,62 +1,137 @@
+/*-
+ * ========================LICENSE_START=================================
+ * O-RAN-SC
+ * %%
+ * 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.oransc.policyagent.dmaap;
 
+import com.google.common.collect.Iterables;
+import java.io.IOException;
 import java.util.Properties;
-
-import org.onap.dmaap.mr.client.impl.MRConsumerImpl;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import org.onap.dmaap.mr.client.MRClientFactory;
+import org.onap.dmaap.mr.client.MRConsumer;
+import org.onap.dmaap.mr.client.response.MRConsumerResponse;
 import org.oransc.policyagent.configuration.ApplicationConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.annotation.EnableScheduling;
+import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
 
 @Component
+@EnableScheduling
 public class DmaapMessageConsumerImpl implements DmaapMessageConsumer {
 
-    private final ApplicationConfig applicationConfig;
-
-	protected MRConsumerImpl consumer;
-
-	@Autowired
-	public DmaapMessageConsumerImpl(ApplicationConfig applicationConfig) {
-		this.applicationConfig = applicationConfig;
-	}
-
-	@Override
-	public void run() {
-		// TODO Auto-generated method stub
-
-	}
-
-	@Override
-	public void init(Properties baseProperties) {
-	    Properties dmaapConsumerConfig = applicationConfig.getDmaapConsumerConfig();
-		// Initialize the DMAAP with the properties
-		// TODO Auto-generated method stub
-
-	}
-
-	@Override
-	public void processMsg(String msg) throws Exception {
-		// Call the Controller once you get the message from DMAAP
-		// Call the concurrent Task executor to handle the incoming request
-		// TODO Auto-generated method stub
-
-	}
-
-	@Override
-	public boolean isReady() {
-		// TODO Auto-generated method stub
-		return false;
-	}
-
-	@Override
-	public boolean isRunning() {
-		// TODO Auto-generated method stub
-		return false;
-	}
-
-	@Override
-	public void stopConsumer() {
-		// TODO Auto-generated method stub
-
-	}
+    private static final Logger logger = LoggerFactory.getLogger(DmaapMessageConsumerImpl.class);
 
+    private boolean alive = false;
+    private final ApplicationConfig applicationConfig;
+    protected MRConsumer consumer;
+    @Autowired
+    private DmaapMessageHandler dmaapMessageHandler;
+    private final long FETCHTIMEOUT = 30000;
+
+    private CountDownLatch sleep = new CountDownLatch(1);
+
+    @Autowired
+    public DmaapMessageConsumerImpl(ApplicationConfig applicationConfig) {
+        this.applicationConfig = applicationConfig;
+    }
+
+    @Scheduled(fixedRate = 1000 * 10)
+    @Override
+    public void run() {
+        if (!alive) {
+            init();
+        }
+        if (this.alive) {
+            try {
+                Iterable<String> dmaapMsgs = fetchAllMessages();
+                if (dmaapMsgs != null && Iterables.size(dmaapMsgs) > 0) {
+                    logger.debug("Fetched all the messages from DMAAP and will start to process the messages");
+                    for (String msg : dmaapMsgs) {
+                        processMsg(msg);
+                    }
+                }
+            } catch (Exception e) {
+                logger.error("{}: cannot fetch because of ", this, e.getMessage(), e);
+            }
+        }
+    }
+
+    private Iterable<String> fetchAllMessages() {
+        MRConsumerResponse response = null;
+        try {
+            response = consumer.fetchWithReturnConsumerResponse();
+        } catch (Exception e) {
+            logger.error("Failed to get message from DMAAP", e);
+        }
+        if (response == null || !"200".equals(response.getResponseCode())) {
+            logger.warn("{}: DMaaP NULL response received", this);
+            sleepAfterFailure();
+        } else {
+            logger.debug("DMaaP consumer received {} : {}", response.getResponseCode(), response.getResponseMessage());
+        }
+        return response.getActualMessages();
+    }
+
+    @Override
+    public void init() {
+        Properties dmaapConsumerProperties = applicationConfig.getDmaapConsumerConfig();
+        Properties dmaapPublisherProperties = applicationConfig.getDmaapPublisherConfig();
+        // No need to start if there is no configuration.
+        if (dmaapConsumerProperties == null || dmaapPublisherProperties == null || dmaapConsumerProperties.size() == 0
+                || dmaapPublisherProperties.size() == 0) {
+            logger.error("DMaaP properties Failed to Load");
+            return;
+        }
+        try {
+            logger.debug("Creating DMAAP Client");
+            logger.debug("dmaapConsumerProperties---> {}", dmaapConsumerProperties.getProperty("topic"));
+            logger.debug("dmaapPublisherProperties---> {}", dmaapPublisherProperties.getProperty("topic"));
+            consumer = MRClientFactory.createConsumer(dmaapConsumerProperties);
+            this.alive = true;
+        } catch (IOException e) {
+            logger.error("Exception occurred while creating Dmaap Consumer", e);
+        }
+    }
+
+    @Override
+    public void processMsg(String msg) throws Exception {
+        logger.debug("Message Reveived from DMAAP : {}", msg);
+        // Call the concurrent Task executor to handle the incoming request
+        dmaapMessageHandler.handleDmaapMsg(msg);
+    }
+
+    @Override
+    public boolean isAlive() {
+        return alive;
+    }
+
+    private void sleepAfterFailure() {
+        logger.warn("DMAAP message Consumer is put to Sleep for {} milliseconds", FETCHTIMEOUT);
+        try {
+            sleep.await(FETCHTIMEOUT, TimeUnit.MILLISECONDS);
+        } catch (InterruptedException e) {
+            logger.error("Failed to put the thread to sleep: {}", e);
+        }
+    }
 }