1 files changed, 124 insertions, 0 deletions
diff --git a/ecomp-portal-BE-os/src/main/java/org/onap/portalapp/portal/service/AppsCacheServiceImple.java b/ecomp-portal-BE-os/src/main/java/org/onap/portalapp/portal/service/AppsCacheServiceImple.java
new file mode 100644
index 00000000..f884d4e7
--- /dev/null
+++ b/ecomp-portal-BE-os/src/main/java/org/onap/portalapp/portal/service/AppsCacheServiceImple.java
@@ -0,0 +1,124 @@
+/*-
+ * ============LICENSE_START==========================================
+ * ONAP Portal
+ * ===================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ===================================================================
+ *
+ * Unless otherwise specified, all software contained herein is licensed
+ * under the Apache License, Version 2.0 (the "License");
+ * you may not use this software 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.
+ *
+ * Unless otherwise specified, all documentation contained herein is licensed
+ * under the Creative Commons License, Attribution 4.0 Intl. (the "License");
+ * you may not use this documentation except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *             https://creativecommons.org/licenses/by/4.0/
+ *
+ * Unless required by applicable law or agreed to in writing, documentation
+ * 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============================================
+ *
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+package org.onap.portalapp.portal.service;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.annotation.PostConstruct;
+
+import org.onap.portalapp.portal.domain.EPApp;
+import org.onap.portalapp.portal.logging.aop.EPMetricsLog;
+import org.onap.portalapp.portal.service.AppsCacheService;
+import org.onap.portalapp.portal.service.EPAppService;
+import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.EnableAspectJAutoProxy;
+import org.springframework.stereotype.Service;
+
+@Service("appsCacheService")
+@org.springframework.context.annotation.Configuration
+@EnableAspectJAutoProxy
+@EPMetricsLog
+public class AppsCacheServiceImple implements AppsCacheService {
+	@Autowired
+	EPAppService appsService;
+	
+	EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(AppsCacheServiceImple.class);
+	
+	private static long updateTime = 0;
+	private static final int cacheUpdateIntervalInSeconds = 10;
+	
+	private static volatile Map<Long, EPApp> appsMap;
+	
+	@PostConstruct
+	public void init() {
+		this.refreshAppsMap();
+	}
+
+	private Map<Long, EPApp> refreshAppsMap() {
+		long now = System.currentTimeMillis();
+		
+		if(noNeedToUpdate(now))
+			return null;
+		
+		synchronized (this) {
+			if(noNeedToUpdate(now))
+				return null;
+			List<EPApp> allApps = appsService.getAppsFullList();
+			Map<Long, EPApp> newAppsMap = new HashMap<Long, EPApp>();
+			for (EPApp app : allApps) {
+				newAppsMap.put(app.getId(), app);
+			}
+			// Switch cache with the new one.
+			appsMap = newAppsMap;
+			updateTime = now;
+		}
+		
+		return appsMap;
+	}
+
+	private boolean noNeedToUpdate(long now) {
+		long secondsPassed = (now - updateTime)/1000;
+		if(secondsPassed < cacheUpdateIntervalInSeconds){
+			logger.debug(EELFLoggerDelegate.debugLogger, "no need to refresh yet, seconds since last refresh: " + secondsPassed + ", refresh interval (sec) = " + cacheUpdateIntervalInSeconds);
+			return true; // no need to update cache
+		}
+		return false; // its time to update
+	}
+
+	@Override
+	public String getAppEndpoint(Long appId) {
+		refreshAppsMap();
+		EPApp app = appsMap.get(appId);
+		if(app != null)
+			return app.getAppRestEndpoint();
+		return null;
+	}
+	
+	@Override
+	public EPApp getApp(Long appId) {
+		refreshAppsMap();
+		EPApp app = appsMap.get(appId);
+		if(app != null)
+			return app;
+		return null;		
+	}
+
+}