Added ability to autogenerate checksum for firmware

@@ -115,7 +115,7 @@ public class FirmwareController extends BaseController {
     @ResponseBody
     public Firmware saveFirmwareData(@PathVariable(FIRMWARE_ID) String strFirmwareId,
                                      @RequestParam(required = false) String checksum,
-                                     @RequestParam(required = false) String checksumAlgorithm,
+                                     @RequestParam() String checksumAlgorithm,
                                      @RequestBody MultipartFile file) throws ThingsboardException {
         checkParameter(FIRMWARE_ID, strFirmwareId);
         try {
@@ -129,18 +129,17 @@ public class FirmwareController extends BaseController {
             firmware.setVersion(info.getVersion());
             firmware.setAdditionalInfo(info.getAdditionalInfo());
 
-            byte[] data = file.getBytes();
-            if (StringUtils.isEmpty(checksumAlgorithm)) {
-                checksumAlgorithm = "sha256";
-                checksum = Hashing.sha256().hashBytes(data).toString();
+            ByteBuffer data = ByteBuffer.wrap(file.getBytes());
+            if (StringUtils.isEmpty(checksum)) {
+                checksum = firmwareService.generateChecksum(checksumAlgorithm, data);
             }
 
             firmware.setChecksumAlgorithm(checksumAlgorithm);
             firmware.setChecksum(checksum);
             firmware.setFileName(file.getOriginalFilename());
             firmware.setContentType(file.getContentType());
-            firmware.setData(ByteBuffer.wrap(data));
-            firmware.setDataSize((long) data.length);
+            firmware.setData(data);
+            firmware.setDataSize((long) data.array().length);
             return firmwareService.saveFirmware(firmware);
         } catch (Exception e) {
             throw handleException(e);

@@ -22,12 +22,16 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 
+import java.nio.ByteBuffer;
+
 public interface FirmwareService {
 
     FirmwareInfo saveFirmwareInfo(FirmwareInfo firmwareInfo);
 
     Firmware saveFirmware(Firmware firmware);
 
+    String generateChecksum(String checksumAlgorithm, ByteBuffer data);
+
     Firmware findFirmwareById(TenantId tenantId, FirmwareId firmwareId);
 
     FirmwareInfo findFirmwareInfoById(TenantId tenantId, FirmwareId firmwareId);

@@ -456,9 +456,6 @@ public class MqttTransportHandler extends ChannelInboundHandlerAdapter implement
             deviceSessionCtx.getPayloadAdaptor()
                     .convertToPublish(deviceSessionCtx, firmwareChunk, requestId, chunk)
                     .ifPresent(deviceSessionCtx.getChannel()::writeAndFlush);
-            if (firmwareChunk != null && chunkSize != firmwareChunk.length) {
-                scheduler.schedule(() -> processDisconnect(ctx), 60, TimeUnit.SECONDS);
-            }
         } catch (Exception e) {
             log.trace("[{}] Failed to send firmware response!", sessionId, e);
         }

@@ -102,6 +102,32 @@ public class BaseFirmwareService implements FirmwareService {
     }
 
     @Override
+    public String generateChecksum(String checksumAlgorithm, ByteBuffer data) {
+
+        if (data == null || !data.hasArray() || data.array().length == 0) {
+            throw new DataValidationException("Firmware data should be specified!");
+        }
+
+        HashFunction hashFunction;
+        switch (checksumAlgorithm) {
+            case "sha256":
+                hashFunction = Hashing.sha256();
+                break;
+            case "md5":
+                hashFunction = Hashing.md5();
+                break;
+            case "crc32":
+                hashFunction = Hashing.crc32();
+                break;
+            default:
+                throw new DataValidationException("Unknown checksum algorithm!");
+        }
+
+        return hashFunction.hashBytes(data.array()).toString();
+    }
+
+
+    @Override
     public Firmware findFirmwareById(TenantId tenantId, FirmwareId firmwareId) {
         log.trace("Executing findFirmwareById [{}]", firmwareId);
         validateId(firmwareId, INCORRECT_FIRMWARE_ID + firmwareId);
@@ -217,11 +243,6 @@ public class BaseFirmwareService implements FirmwareService {
                 throw new DataValidationException("Firmware content type should be specified!");
             }
 
-            ByteBuffer data = firmware.getData();
-            if (data == null || !data.hasArray() || data.array().length == 0) {
-                throw new DataValidationException("Firmware data should be specified!");
-            }
-
             if (StringUtils.isEmpty(firmware.getChecksumAlgorithm())) {
                 throw new DataValidationException("Firmware checksum algorithm should be specified!");
             }
@@ -229,22 +250,7 @@ public class BaseFirmwareService implements FirmwareService {
                 throw new DataValidationException("Firmware checksum should be specified!");
             }
 
-            HashFunction hashFunction;
-            switch (firmware.getChecksumAlgorithm()) {
-                case "sha256":
-                    hashFunction = Hashing.sha256();
-                    break;
-                case "md5":
-                    hashFunction = Hashing.md5();
-                    break;
-                case "crc32":
-                    hashFunction = Hashing.crc32();
-                    break;
-                default:
-                    throw new DataValidationException("Unknown checksum algorithm!");
-            }
-
-            String currentChecksum = hashFunction.hashBytes(data.array()).toString();
+            String currentChecksum = generateChecksum(firmware.getChecksumAlgorithm(), firmware.getData());
 
             if (!currentChecksum.equals(firmware.getChecksum())) {
                 throw new DataValidationException("Wrong firmware file!");

@@ -20,7 +20,7 @@ import { PageLink } from '@shared/models/page/page-link';
 import { defaultHttpOptionsFromConfig, defaultHttpUploadOptions, RequestConfig } from '@core/http/http-utils';
 import { Observable } from 'rxjs';
 import { PageData } from '@shared/models/page/page-data';
-import { Firmware, FirmwareInfo } from '@shared/models/firmware.models';
+import { ChecksumAlgorithm, Firmware, FirmwareInfo } from '@shared/models/firmware.models';
 import { catchError, map, mergeMap } from 'rxjs/operators';
 import { deepClone, isDefinedAndNotNull } from '@core/utils';
 
@@ -100,16 +100,16 @@ export class FirmwareService {
     return this.http.post<Firmware>('/api/firmware', firmware, defaultHttpOptionsFromConfig(config));
   }
 
-  public uploadFirmwareFile(firmwareId: string, file: File, checksumAlgorithm?: string,
+  public uploadFirmwareFile(firmwareId: string, file: File, checksumAlgorithm: ChecksumAlgorithm,
                             checksum?: string, config?: RequestConfig): Observable<any> {
     if (!config) {
       config = {};
     }
     const formData = new FormData();
     formData.append('file', file);
-    let url = `/api/firmware/${firmwareId}`;
-    if (checksumAlgorithm && checksum) {
-      url += `?checksumAlgorithm=${checksumAlgorithm}&checksum=${checksum}`;
+    let url = `/api/firmware/${firmwareId}?checksumAlgorithm=${checksumAlgorithm}`;
+    if (checksum) {
+      url += `&checksum=${checksum}`;
     }
     return this.http.post(url, formData,
       defaultHttpUploadOptions(config.ignoreLoading, config.ignoreErrors, config.resendRequest));

@@ -72,7 +72,6 @@
           <mat-label translate>firmware.checksum-algorithm</mat-label>
           <input *ngIf="!isAdd" matInput formControlName="checksumAlgorithm" type="text" [readonly]="isEdit">
           <mat-select formControlName="checksumAlgorithm" *ngIf="isAdd">
-            <mat-option [value]=null></mat-option>
             <mat-option *ngFor="let checksumAlgorithm of checksumAlgorithms" [value]="checksumAlgorithm">
               {{ checksumAlgorithmTranslationMap.get(checksumAlgorithm) }}
             </mat-option>
@@ -80,11 +79,7 @@
         </mat-form-field>
         <mat-form-field class="mat-block" fxFlex>
           <mat-label translate>firmware.checksum</mat-label>
-          <input matInput formControlName="checksum" type="text" [readonly]="!isAdd"
-                 [required]="entityForm.get('checksumAlgorithm').value != null">
-          <mat-error *ngIf="entityForm.get('checksumAlgorithm').hasError('required')">
-            {{ 'firmware.checksum-required' | translate }}
-          </mat-error>
+          <input matInput formControlName="checksum" type="text" [readonly]="!isAdd">
         </mat-form-field>
       </div>
       <section *ngIf="isAdd" style="padding-top: 8px">

@@ -23,7 +23,6 @@ import { EntityTableConfig } from '@home/models/entity/entities-table-config.mod
 import { FormBuilder, FormGroup, Validators } from '@angular/forms';
 import { EntityComponent } from '@home/components/entity/entity.component';
 import { ChecksumAlgorithm, ChecksumAlgorithmTranslationMap, Firmware } from '@shared/models/firmware.models';
-import { distinctUntilChanged, map, takeUntil } from 'rxjs/operators';
 import { ActionNotificationShow } from '@core/notification/notification.actions';
 
 @Component({
@@ -45,26 +44,6 @@ export class FirmwaresComponent extends EntityComponent<Firmware> implements OnI
     super(store, fb, entityValue, entitiesTableConfigValue);
   }
 
-  ngOnInit() {
-    super.ngOnInit();
-    if (this.isAdd) {
-      this.entityForm.get('checksumAlgorithm').valueChanges.pipe(
-        map(algorithm => !!algorithm),
-        distinctUntilChanged(),
-        takeUntil(this.destroy$)
-      ).subscribe(
-        setAlgorithm => {
-          if (setAlgorithm) {
-            this.entityForm.get('checksum').setValidators([Validators.maxLength(1020), Validators.required]);
-          } else {
-            this.entityForm.get('checksum').clearValidators();
-          }
-          this.entityForm.get('checksum').updateValueAndValidity({emitEvent: false});
-        }
-      );
-    }
-  }
-
   ngOnDestroy() {
     super.ngOnDestroy();
     this.destroy$.next();
@@ -83,7 +62,7 @@ export class FirmwaresComponent extends EntityComponent<Firmware> implements OnI
     const form = this.fb.group({
       title: [entity ? entity.title : '', [Validators.required, Validators.maxLength(255)]],
       version: [entity ? entity.version : '', [Validators.required, Validators.maxLength(255)]],
-      checksumAlgorithm: [entity ? entity.checksumAlgorithm : null],
+      checksumAlgorithm: [entity && entity.checksumAlgorithm ? entity.checksumAlgorithm : ChecksumAlgorithm.SHA256],
       checksum: [entity ? entity.checksum : '', Validators.maxLength(1020)],
       additionalInfo: this.fb.group(
         {

@@ -38,8 +38,8 @@ export interface FirmwareInfo extends BaseData<FirmwareId> {
   version?: string;
   hasData?: boolean;
   fileName: string;
-  checksum?: ChecksumAlgorithm;
-  checksumAlgorithm?: string;
+  checksum?: string;
+  checksumAlgorithm: ChecksumAlgorithm;
   contentType: string;
   dataSize?: number;
   additionalInfo?: any;