Rest API call to get device by tenant id and name

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

@@ -156,6 +156,19 @@ public class DeviceController extends BaseController {
         }
     }
 
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/tenant/devices", params = {"deviceName"}, method = RequestMethod.GET)
+    @ResponseBody
+    public Device getTenantDevice(
+            @RequestParam String deviceName) throws ThingsboardException {
+        try {
+            TenantId tenantId = getCurrentUser().getTenantId();
+            return checkNotNull(deviceService.findDeviceByTenantIdAndName(tenantId, deviceName));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/customer/{customerId}/devices", params = {"limit"}, method = RequestMethod.GET)
     @ResponseBody

tools/src/main/java/org/thingsboard/client/tools/RestClient.java

@@ -18,11 +18,13 @@ package org.thingsboard.client.tools;
 import com.fasterxml.jackson.databind.JsonNode;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpRequest;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.http.client.ClientHttpRequestExecution;
 import org.springframework.http.client.ClientHttpRequestInterceptor;
 import org.springframework.http.client.ClientHttpResponse;
 import org.springframework.http.client.support.HttpRequestWrapper;
+import org.springframework.web.client.HttpClientErrorException;
 import org.springframework.web.client.RestTemplate;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.id.DeviceId;
@@ -32,6 +34,7 @@ import java.io.IOException;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
 
 /**
  * @author Andrew Shvayka
@@ -52,6 +55,21 @@ public class RestClient implements ClientHttpRequestInterceptor {
         restTemplate.setInterceptors(Collections.singletonList(this));
     }
 
+    public Optional<Device> findDevice(String name) {
+        Map<String, String> params = new HashMap<String, String>();
+        params.put("deviceName", name);
+        try {
+            ResponseEntity<Device> deviceEntity = restTemplate.getForEntity(baseURL + "/api/tenant/devices?deviceName={deviceName}", Device.class, params);
+            return Optional.of(deviceEntity.getBody());
+        } catch (HttpClientErrorException exception) {
+            if (exception.getStatusCode() == HttpStatus.NOT_FOUND) {
+                return Optional.empty();
+            } else {
+                throw exception;
+            }
+        }
+    }
+
     public Device createDevice(String name) {
         Device device = new Device();
         device.setName(name);