add REST API for fetching TB application version

application/src/main/java/org/thingsboard/server/controller/SystemInfoController.java

@@ -0,0 +1,67 @@
+/**
+ * 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.controller;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.info.BuildProperties;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+
+import javax.annotation.PostConstruct;
+
+@RestController
+@TbCoreComponent
+@RequestMapping("/api")
+@Slf4j
+public class SystemInfoController {
+
+    @Autowired
+    private BuildProperties buildProperties;
+
+    @PostConstruct
+    public void init() {
+        JsonNode info = buildInfoObject();
+        log.info("System build info: {}", info);
+    }
+
+    @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/system/info", method = RequestMethod.GET)
+    @ResponseBody
+    public JsonNode getSystemVersionInfo() {
+        return buildInfoObject();
+    }
+
+    private JsonNode buildInfoObject() {
+        ObjectMapper objectMapper = new ObjectMapper();
+        ObjectNode infoObject = objectMapper.createObjectNode();
+        if (buildProperties != null) {
+            infoObject.put("version", buildProperties.getVersion());
+            infoObject.put("artifact", buildProperties.getArtifact());
+            infoObject.put("name", buildProperties.getName());
+        } else {
+            infoObject.put("version", "unknown");
+        }
+        return infoObject;
+    }
+}

pom.xml

@@ -497,6 +497,7 @@
                                 <execution>
                                     <goals>
                                         <goal>repackage</goal>
+                                        <goal>build-info</goal>
                                     </goals>
                                 </execution>
                             </executions>