1 files changed, 93 insertions, 0 deletions
diff --git a/feature-legacy-config/src/main/java/org/onap/policy/drools/legacy/config/LegacyConfig.java b/feature-legacy-config/src/main/java/org/onap/policy/drools/legacy/config/LegacyConfig.java
new file mode 100644
index 00000000..01cc3b34
--- /dev/null
+++ b/feature-legacy-config/src/main/java/org/onap/policy/drools/legacy/config/LegacyConfig.java
@@ -0,0 +1,93 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2021 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.policy.drools.legacy.config;
+
+import java.util.List;
+import java.util.Properties;
+import lombok.Getter;
+import org.onap.policy.common.capabilities.Startable;
+import org.onap.policy.common.endpoints.event.comm.Topic;
+import org.onap.policy.common.endpoints.event.comm.TopicEndpointManager;
+import org.onap.policy.common.endpoints.event.comm.TopicListener;
+import org.onap.policy.common.endpoints.event.comm.TopicSource;
+import org.onap.policy.drools.persistence.SystemPersistenceConstants;
+import org.onap.policy.drools.system.PolicyEngineConstants;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Legacy Configurator.
+ */
+public class LegacyConfig implements Startable, TopicListener {
+
+    private static final Logger logger = LoggerFactory.getLogger(LegacyConfig.class);
+    private static final String CONFIGURATION_PROPERTIES_NAME = "feature-legacy-config";
+
+    @Getter
+    private final Properties properties;
+
+    @Getter
+    private TopicSource source;
+
+    /**
+     * Constructor.
+     */
+    public LegacyConfig() {
+        properties = SystemPersistenceConstants.getManager().getProperties(CONFIGURATION_PROPERTIES_NAME);
+        List<TopicSource> sources = TopicEndpointManager.getManager().addTopicSources(properties);
+        if (sources.isEmpty()) {
+            throw new IllegalStateException("LegacyConfig cannot be instantiated, no sources");
+        }
+
+        this.source = sources.get(0);
+        if (sources.size() != 1) {
+            logger.warn("LegacyConfig: more than one source is configured ({}), using {}",
+                    sources.size(), this.source);
+        }
+
+        source.register(this);
+    }
+
+    @Override
+    public boolean start() {
+        return source.start();
+    }
+
+    @Override
+    public boolean stop() {
+        return source.stop();
+    }
+
+    @Override
+    public void shutdown() {
+        source.shutdown();
+    }
+
+    @Override
+    public boolean isAlive() {
+        return source.isAlive();
+    }
+
+    @Override
+    public void onTopicEvent(Topic.CommInfrastructure comm, String topic, String event) {
+        PolicyEngineConstants.getManager().onTopicEvent(comm, topic, event);
+    }
+}