Distributed map setup for Module and Data Sync

- Introduce the hazelcast dependency and check how the builds react to
  it.
- Data Sync and Module Sync Map config.
- Added basic test scenarios.
- Updating the artifact-id from hazelcast-all to hazelcast-spring and
  version is 4.2.5. (5.1.2 is latest but has known vulnerabilities)
- Refactored the code as per the onsite review session
- Upcoming : Actual sub-task which will use the distributed maps in
  respective use cases.

Issue-ID: CPS-1050
Change-Id: I60314c4ff95c267b186b20862aef93a5c389a971
Signed-off-by: mpriyank <priyank.maheshwari@est.tech>

3 files changed, 121 insertions, 0 deletions

diff --git a/cps-ncmp-service/pom.xml b/cps-ncmp-service/pom.xml
index 502e9824d7..93c265a7bf 100644
--- a/cps-ncmp-service/pom.xml
+++ b/cps-ncmp-service/pom.xml
@@ -57,6 +57,10 @@
             <groupId>org.mapstruct</groupId>
             <artifactId>mapstruct-processor</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.hazelcast</groupId>
+            <artifactId>hazelcast-spring</artifactId>
+        </dependency>
         <!-- T E S T - D E P E N D E N C I E S -->
         <dependency>
             <groupId>org.spockframework</groupId>
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationSemaphoresConfig.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationSemaphoresConfig.java
new file mode 100644
index 0000000000..978c3d16b7
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationSemaphoresConfig.java
@@ -0,0 +1,68 @@
+/*
+ * ============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.core.Hazelcast;
+import java.util.Map;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Core infrastructure of the hazelcast distributed map for Module Sync and Data Sync use cases.
+ */
+@Configuration
+public class SynchronizationSemaphoresConfig {
+
+    /**
+     * Module Sync Distributed Map Instance.
+     * @return  Instance of Map
+     */
+    @Bean
+    public Map<String, String> moduleSyncSemaphore() {
+        return Hazelcast.newHazelcastInstance(
+                initializeDefaultMapConfig("moduleSyncSemaphore", "moduleSyncSemaphoreConfig"))
+                .getMap("moduleSyncSemaphore");
+    }
+
+    /**
+     * Data Sync Distributed Map Instance.
+     * @return  Instance of Map
+     */
+    @Bean
+    public Map<String, String> dataSyncSemaphore() {
+        return Hazelcast.newHazelcastInstance(
+                initializeDefaultMapConfig("dataSyncSemaphore", "dataSyncSemaphoreConfig"))
+                .getMap("dataSyncSemaphore");
+    }
+
+    private Config initializeDefaultMapConfig(final String instanceName, final String configName) {
+        final Config config = new Config(instanceName);
+        final MapConfig mapConfig = new MapConfig(configName);
+        mapConfig.setTimeToLiveSeconds(30);
+        mapConfig.setBackupCount(3);
+        mapConfig.setAsyncBackupCount(3);
+        config.addMapConfig(mapConfig);
+        config.setClusterName("synchronization-semaphores");
+        return config;
+    }
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationSemaphoresConfigSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationSemaphoresConfigSpec.groovy
new file mode 100644
index 0000000000..fe7ed9eeb3
--- /dev/null
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/config/embeddedcache/SynchronizationSemaphoresConfigSpec.groovy
@@ -0,0 +1,49 @@
+/*
+ * ============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.core.Hazelcast
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.context.ContextConfiguration
+import spock.lang.Specification
+
+@SpringBootTest
+@ContextConfiguration(classes = [SynchronizationSemaphoresConfig])
+class SynchronizationSemaphoresConfigSpec extends Specification {
+
+    @Autowired
+    private Map<String, String> moduleSyncSemaphore;
+
+    @Autowired
+    private Map<String, String> dataSyncSemaphore;
+
+    def 'Embedded Sync Semaphores'() {
+        expect: 'system is able to create an instance of ModuleSyncSemaphore'
+            assert null != moduleSyncSemaphore
+        and: 'system is able to create an instance of DataSyncSemaphore'
+            assert null != dataSyncSemaphore
+        and: 'we have 2 instances'
+            assert Hazelcast.allHazelcastInstances.size() == 2
+        and: 'the names match'
+            assert Hazelcast.allHazelcastInstances.name == ['moduleSyncSemaphore', 'dataSyncSemaphore']
+    }
+}