Added redis session store

common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/TbL2M2MDtlsSessionInMemoryStore.java

@@ -15,14 +15,10 @@
  */
 package org.thingsboard.server.transport.lwm2m.server.store;
 
-import org.springframework.stereotype.Component;
-import org.thingsboard.server.queue.util.TbLwM2mTransportComponent;
 import org.thingsboard.server.transport.lwm2m.secure.TbX509DtlsSessionInfo;
 
 import java.util.concurrent.ConcurrentHashMap;
 
-@Component
-@TbLwM2mTransportComponent
 public class TbL2M2MDtlsSessionInMemoryStore implements TbLwM2MDtlsSessionStore {
 
     private final ConcurrentHashMap<String, TbX509DtlsSessionInfo> store = new ConcurrentHashMap<>();

common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/TbLwM2MDtlsSessionRedisStore.java

@@ -0,0 +1,66 @@
+/**
+ * Copyright © 2016-2021 The Thingsboard Authors
+ *
+ * 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.
+ */
+package org.thingsboard.server.transport.lwm2m.server.store;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.thingsboard.common.util.JacksonUtil;
+import org.thingsboard.server.transport.lwm2m.secure.TbX509DtlsSessionInfo;
+
+public class TbLwM2MDtlsSessionRedisStore implements TbLwM2MDtlsSessionStore {
+
+    private static final String SESSION_EP = "SESSION#EP#";
+    RedisConnectionFactory connectionFactory;
+
+    public TbLwM2MDtlsSessionRedisStore(RedisConnectionFactory redisConnectionFactory) {
+        this.connectionFactory = redisConnectionFactory;
+    }
+
+    @Override
+    public void put(String endpoint, TbX509DtlsSessionInfo msg) {
+        try (var c = connectionFactory.getConnection()) {
+            var msgJson = JacksonUtil.convertValue(msg, JsonNode.class);
+            if (msgJson != null) {
+                c.set(getKey(endpoint), msgJson.toString().getBytes());
+            } else {
+                throw new RuntimeException("Problem with serialization of message: " + msg.toString());
+            }
+        }
+    }
+
+    @Override
+    public TbX509DtlsSessionInfo get(String endpoint) {
+        try (var c = connectionFactory.getConnection()) {
+            var data = c.get(getKey(endpoint));
+            if (data != null) {
+                return JacksonUtil.fromString(new String(data), TbX509DtlsSessionInfo.class);
+            } else {
+                return null;
+            }
+        }
+    }
+
+    @Override
+    public void remove(String endpoint) {
+        try (var c = connectionFactory.getConnection()) {
+            c.del(getKey(endpoint));
+        }
+    }
+
+    private byte[] getKey(String endpoint) {
+        return (SESSION_EP + endpoint).getBytes();
+    }
+}

common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/TbLwM2MDtlsSessionStore.java

@@ -24,9 +24,6 @@ public interface TbLwM2MDtlsSessionStore {
 
     TbX509DtlsSessionInfo get(String endpoint);
 
-
     void remove(String endpoint);
 
-    //TODO: add way to delete the session by endpoint.
-
 }

common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/TbLwM2mStoreFactory.java

@@ -60,4 +60,10 @@ public class TbLwM2mStoreFactory {
                 new TbLwM2mRedisSecurityStore(redisConfiguration.get().redisConnectionFactory()) : new InMemorySecurityStore());
     }
 
+    @Bean
+    private TbLwM2MDtlsSessionStore sessionStore() {
+        return redisConfiguration.isPresent() && useRedis ?
+                new TbLwM2MDtlsSessionRedisStore(redisConfiguration.get().redisConnectionFactory()) : new TbL2M2MDtlsSessionInMemoryStore();
+    }
+
 }