Merge pull request #15 from BohdanSmetanyuk/bug/device_credentials_from_edge

bug fixed by DeviceCredentials creation

@@ -28,6 +28,7 @@ import com.google.gson.JsonObject;
 import io.grpc.stub.StreamObserver;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang.RandomStringUtils;
 import org.checkerframework.checker.nullness.qual.Nullable;
 import org.thingsboard.server.common.data.Dashboard;
 import org.thingsboard.server.common.data.DataConstants;
@@ -866,6 +867,7 @@ public final class EdgeGrpcSession implements Closeable {
             device.setType(deviceUpdateMsg.getType());
             device.setLabel(deviceUpdateMsg.getLabel());
             device = ctx.getDeviceService().saveDevice(device);
+            createDeviceCredentials(device);
             device = ctx.getDeviceService().assignDeviceToEdge(edge.getTenantId(), device.getId(), edge.getId());
             createRelationFromEdge(device.getId());
             ctx.getRelationService().saveRelationAsync(TenantId.SYS_TENANT_ID, new EntityRelation(edge.getId(), device.getId(), "Created"));
@@ -878,6 +880,14 @@ public final class EdgeGrpcSession implements Closeable {
         return device;
     }
 
+    private void createDeviceCredentials(Device device) {
+        DeviceCredentials deviceCredentials = new DeviceCredentials();
+        deviceCredentials.setDeviceId(device.getId());
+        deviceCredentials.setCredentialsType(DeviceCredentialsType.ACCESS_TOKEN);
+        deviceCredentials.setCredentialsId(RandomStringUtils.randomAlphanumeric(20));
+        ctx.getDeviceCredentialsService().createDeviceCredentials(device.getTenantId(), deviceCredentials);
+    }
+
     private EntityId getAlarmOriginator(String entityName, org.thingsboard.server.common.data.EntityType entityType) {
         switch (entityType) {
             case DEVICE: