1 files changed, 91 insertions, 0 deletions
diff --git a/dcae-analytics-tca/src/main/java/org/onap/dcae/apod/analytics/tca/processor/TCACEFPolicyEventNameFilter.java b/dcae-analytics-tca/src/main/java/org/onap/dcae/apod/analytics/tca/processor/TCACEFPolicyEventNameFilter.java
new file mode 100644
index 0000000..73cbe78
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+++ b/dcae-analytics-tca/src/main/java/org/onap/dcae/apod/analytics/tca/processor/TCACEFPolicyEventNameFilter.java
@@ -0,0 +1,91 @@
+/*
+ * ===============================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.onap.dcae.apod.analytics.tca.processor;
+
+import com.google.common.base.Joiner;
+import org.onap.dcae.apod.analytics.model.domain.cef.EventListener;
+import org.onap.dcae.apod.analytics.model.domain.policy.tca.TCAPolicy;
+
+import java.util.List;
+
+import static org.onap.dcae.apod.analytics.tca.utils.TCAUtils.getPolicyEventNamesSupplier;
+
+/**
+ * <p>
+ *     TCA Processor that acts like a filter to filter out messages which does not belong to TCA Policy Event Name
+ *     <br>
+ *     Pre Conditions: CEF Event Listener must be present
+ * </p>
+ *
+ * @author Rajiv Singla . Creation Date: 11/9/2016.
+ */
+public class TCACEFPolicyEventNameFilter extends AbstractTCAECEFPolicyProcessor {
+
+    private static final long serialVersionUID = 1L;
+
+    @Override
+    public String getProcessorDescription() {
+        return "Filters out CEF Messages which does not match Policy Functional Roles";
+    }
+
+    @Override
+    public TCACEFProcessorContext processMessage(TCACEFProcessorContext processorContext) {
+
+        // Safe to get event Listener here without null check as pre processor will validate if
+        // event listener is indeed present
+        final EventListener eventListener = processorContext.getCEFEventListener();
+
+        String cefMessageEventName;
+
+        if (eventListener.getEvent() != null &&
+                eventListener.getEvent().getCommonEventHeader() != null &&
+                eventListener.getEvent().getCommonEventHeader().getEventName() != null) {
+            cefMessageEventName = eventListener.getEvent().getCommonEventHeader().getEventName();
+        } else {
+            String terminationMessage = "Invalid CEF Message.Common Event Header Event Name not present.";
+            setTerminatingProcessingMessage(terminationMessage, processorContext);
+            return processorContext;
+        }
+
+        // Determine Policy Functional Roles
+        final TCAPolicy tcaPolicy = processorContext.getTCAPolicy();
+        final List<String> policyEventNames = getPolicyEventNamesSupplier(tcaPolicy).get();
+        final String policyEventNamesString = Joiner.on(",").join(policyEventNames);
+
+        // If Policy event names contains CEF message event names then continue processing
+        if (policyEventNames.contains(cefMessageEventName)) {
+            final String finishMessage = String.format(
+                    "Policy Event Name and CEF Message Event Name match successful." +
+                            "Message EventName: %s, Policy Event Names: %s",
+                    cefMessageEventName, policyEventNamesString);
+            setFinishedProcessingMessage(finishMessage, processorContext);
+        } else {
+            // If Policy event names does not contain CEF message event names then terminate processing
+            final String terminatingMessage = String.format(
+                    "Policy Event name and CEF Message Event name match unsuccessful." +
+                            "Message EventName: %s, Policy Event Names: %s",
+                    cefMessageEventName, policyEventNamesString);
+            setTerminatingProcessingMessage(terminatingMessage, processorContext);
+        }
+
+        return processorContext;
+    }
+}