1 files changed, 75 insertions, 0 deletions
diff --git a/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaDomainFilter.java b/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaDomainFilter.java
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--- /dev/null
+++ b/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaDomainFilter.java
@@ -0,0 +1,75 @@
+/*
+ * ================================================================================
+ * Copyright (c) 2018 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.analytics.tca.core.util.function.calculation;
+
+import java.util.Optional;
+
+import org.onap.dcae.analytics.model.cef.CommonEventHeader;
+import org.onap.dcae.analytics.model.cef.Domain;
+import org.onap.dcae.analytics.model.cef.Event;
+import org.onap.dcae.analytics.model.cef.EventListener;
+import org.onap.dcae.analytics.tca.core.service.TcaExecutionContext;
+import org.onap.dcae.analytics.tca.core.service.TcaProcessingContext;
+
+/**
+ * @author Rajiv Singla
+ */
+public class TcaDomainFilter implements TcaCalculationFunction {
+
+    @Override
+    public TcaExecutionContext calculate(final TcaExecutionContext tcaExecutionContext) {
+
+        final TcaProcessingContext tcaProcessingContext = tcaExecutionContext.getTcaProcessingContext();
+        final String cefMessage = tcaExecutionContext.getCefMessage();
+
+        // Extract CEF domain as it is must be present as per CEF Schema
+        final Optional<Domain> domainOptional = Optional.ofNullable(tcaProcessingContext.getEventListener())
+                .map(EventListener::getEvent)
+                .map(Event::getCommonEventHeader)
+                .map(CommonEventHeader::getDomain);
+
+        // Check domain is present
+        if (!domainOptional.isPresent()) {
+            final String errorMessage =
+                    "Event -> Common Event Header -> Domain not present. Invalid CEF Message: " + cefMessage;
+            setTerminatingMessage(errorMessage, tcaExecutionContext, true);
+            return tcaExecutionContext;
+        }
+
+        // Get Policy and CEF Message Domain
+        final String policyDomain = tcaExecutionContext.getTcaPolicy().getDomain();
+        final String cefMessageDomain = domainOptional.get().name();
+
+        // Check Policy domain matches CEF message domain
+        if (!policyDomain.equalsIgnoreCase(cefMessageDomain)) {
+            final String earlyTerminationMessage = String.format(
+                    "Policy Domain does not match CEF Message Domain. Policy Domain: %s, CEF  Message Domain: %s",
+                    policyDomain, cefMessageDomain);
+            setTerminatingMessage(earlyTerminationMessage, tcaExecutionContext, false);
+            return tcaExecutionContext;
+        }
+
+
+        // Policy Domain and CEF Message Domain match successful
+        // do nothing
+
+        return tcaExecutionContext;
+    }
+}