1 files changed, 113 insertions, 0 deletions
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationCacheConfig.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationCacheConfig.java
new file mode 100644
index 000000000..abde4c2d5
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+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationCacheConfig.java
@@ -0,0 +1,113 @@
+/*
+ * ============LICENSE_START========================================================
+ *  Copyright (C) 2022 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.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.api.impl.config.embeddedcache;
+
+import com.hazelcast.config.Config;
+import com.hazelcast.config.MapConfig;
+import com.hazelcast.config.NamedConfig;
+import com.hazelcast.config.QueueConfig;
+import com.hazelcast.core.Hazelcast;
+import com.hazelcast.core.HazelcastInstance;
+import java.util.Map;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.TimeUnit;
+import org.onap.cps.spi.model.DataNode;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Core infrastructure of the hazelcast distributed caches for Module Sync and Data Sync use cases.
+ */
+@Configuration
+public class SynchronizationCacheConfig {
+
+    private static final QueueConfig commonQueueConfig = createQueueConfig();
+    private static final MapConfig moduleSyncStartedConfig =
+        createMapConfig("moduleSyncStartedConfig", TimeUnit.MINUTES.toSeconds(1));
+    private static final MapConfig dataSyncSemaphoresConfig =
+        createMapConfig("dataSyncSemaphoresConfig", TimeUnit.MINUTES.toSeconds(30));
+
+    /**
+     * Module Sync Distributed Queue Instance.
+     *
+     * @return queue of cm handles (data nodes) that need module sync
+     */
+    @Bean
+    public BlockingQueue<DataNode> moduleSyncWorkQueue() {
+        return createHazelcastInstance("moduleSyncWorkQueue", commonQueueConfig)
+            .getQueue("moduleSyncWorkQueue");
+    }
+
+    /**
+     * Module Sync started (and maybe finished) on cm handles (ids).
+     *
+     * @return Map of cm handles (ids) and objects (not used really) for which module sync has started or been completed
+     */
+    @Bean
+    public Map<String, Object> moduleSyncStartedOnCmHandles() {
+        return createHazelcastInstance("moduleSyncStartedOnCmHandles", moduleSyncStartedConfig)
+            .getMap("moduleSyncStartedOnCmHandles");
+    }
+
+    /**
+     * Data Sync Distributed Map Instance.
+     *
+     * @return configured map of data sync semaphores
+     */
+    @Bean
+    public Map<String, Boolean> dataSyncSemaphores() {
+        return createHazelcastInstance("dataSyncSemaphores", dataSyncSemaphoresConfig)
+            .getMap("dataSyncSemaphores");
+    }
+
+    private HazelcastInstance createHazelcastInstance(
+        final String hazelcastInstanceName, final NamedConfig namedConfig) {
+        return Hazelcast.newHazelcastInstance(initializeConfig(hazelcastInstanceName, namedConfig));
+    }
+
+    private Config initializeConfig(final String instanceName, final NamedConfig namedConfig) {
+        final Config config = new Config(instanceName);
+        if (namedConfig instanceof MapConfig) {
+            config.addMapConfig((MapConfig) namedConfig);
+        }
+        if (namedConfig instanceof QueueConfig) {
+            config.addQueueConfig((QueueConfig) namedConfig);
+        }
+        config.setClusterName("synchronization-caches");
+        return config;
+    }
+
+    private static QueueConfig createQueueConfig() {
+        final QueueConfig commonQueueConfig = new QueueConfig("defaultQueueConfig");
+        commonQueueConfig.setBackupCount(3);
+        commonQueueConfig.setAsyncBackupCount(3);
+        return commonQueueConfig;
+    }
+
+    private static MapConfig createMapConfig(final String configName, final long timeToLiveSeconds) {
+        final MapConfig mapConfig = new MapConfig(configName);
+        mapConfig.setBackupCount(3);
+        mapConfig.setAsyncBackupCount(3);
+        mapConfig.setTimeToLiveSeconds((int) timeToLiveSeconds);
+        return mapConfig;
+    }
+
+}