lwm2m - fix bug info if first update Fw/Sw - failed

common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/LwM2mTransportCoapResource.java

@@ -138,8 +138,8 @@ public class LwM2mTransportCoapResource extends AbstractLwM2mTransportResource {
         UUID currentId = UUID.fromString(idStr);
         Response response = new Response(CoAP.ResponseCode.CONTENT);
         byte[] otaData = this.getOtaData(currentId);
-        log.debug("Read ota data (length): [{}]", otaData.length);
-        if (otaData.length > 0) {
+        if (otaData != null && otaData.length > 0) {
+            log.debug("Read ota data (length): [{}]", otaData.length);
             response.setPayload(otaData);
             if (exchange.getRequestOptions().getBlock2() != null) {
                 int chunkSize = exchange.getRequestOptions().getBlock2().getSzx();
@@ -150,6 +150,8 @@ public class LwM2mTransportCoapResource extends AbstractLwM2mTransportResource {
                 log.trace("With block1 Send currentId: [{}], length: [{}], ", currentId.toString(), otaData.length);
             }
             exchange.respond(response);
+        } else {
+            log.trace("Ota packaged currentId: [{}], is not in this session.", currentId.toString());
         }
     }
 

common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/ota/DefaultLwM2MOtaUpdateService.java

@@ -399,6 +399,9 @@ public class DefaultLwM2MOtaUpdateService extends LwM2MExecutorAwareService impl
                     log.debug("[{}] Starting update to [{}{}] using binary", client.getEndpoint(), fwInfo.getTargetName(), fwInfo.getTargetVersion());
                     startUpdateUsingBinary(client, fwInfo);
                 }
+            } else {
+                log.debug("[{}] failed to update client: [{}], previous update failed.", client.getEndpoint(), fwInfo);
+                logService.log(client, "Failed to process firmware update: " + fwInfo + ". Previous update failed.");
             }
         } catch (Exception e) {
             log.info("[{}] failed to update client: {}", client.getEndpoint(), fwInfo, e);
@@ -424,6 +427,9 @@ public class DefaultLwM2MOtaUpdateService extends LwM2MExecutorAwareService impl
                         startUpdateUsingBinary(client, swInfo);
                     }
                 }
+            } else {
+                log.debug("[{}] failed to update client: [{}], previous update failed.", client.getEndpoint(), swInfo);
+                logService.log(client, "Failed to process software update: " + swInfo + ". Previous update failed.");
             }
         } catch (Exception e) {
             log.info("[{}] failed to update client: {}", client.getEndpoint(), swInfo, e);