UI: lwm2m observe strategy feature.

ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.html

@@ -20,6 +20,20 @@
     <mat-tab label="{{ 'device-profile.lwm2m.model-tab' | translate }}">
       <ng-template matTabContent>
         <section [formGroup]="lwm2mDeviceProfileFormGroup">
+          <mat-form-field class="mat-block">
+            <mat-label translate>device-profile.lwm2m.observe-strategy.observe-strategy</mat-label>
+            <mat-select formControlName="observeStrategy">
+              <mat-select-trigger>
+                {{ observeStrategyMap.get(lwm2mDeviceProfileFormGroup.get('observeStrategy').value)?.name | translate }}
+              </mat-select-trigger>
+              <mat-option *ngFor="let strategy of observeStrategyList" [value]="strategy">
+                {{ observeStrategyMap.get(strategy).name | translate  }}
+                <small style="display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;">
+                  {{ observeStrategyMap.get(strategy).description | translate }}
+                </small>
+              </mat-option>
+            </mat-select>
+          </mat-form-field>
           <tb-profile-lwm2m-object-list
             (addList)="addObjectsList($event)"
             (removeList)="removeObjectsList($event)"

ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.ts

@@ -43,7 +43,9 @@ import {
   RESOURCES,
   ServerSecurityConfig,
   TELEMETRY,
-  ObjectIDVerTranslationMap
+  ObjectIDVerTranslationMap,
+  ObserveStrategy,
+  ObserveStrategyMap
 } from './lwm2m-profile-config.models';
 import { DeviceProfileService } from '@core/http/device-profile.service';
 import { deepClone, isDefinedAndNotNull, isEmpty } from '@core/utils';
@@ -84,6 +86,9 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
   objectIDVers = Object.values(ObjectIDVer) as ObjectIDVer[];
   objectIDVerTranslationMap = ObjectIDVerTranslationMap;
 
+  observeStrategyList = Object.values(ObserveStrategy) as ObserveStrategy[];
+  observeStrategyMap = ObserveStrategyMap;
+
   sortFunction: (key: string, value: object) => object;
 
   @Input()
@@ -102,6 +107,7 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
       observeAttrTelemetry: [null],
       bootstrapServerUpdateEnable: [false],
       bootstrap: [[]],
+      observeStrategy: [null, []],
       clientLwM2mSettings: this.fb.group({
         clientOnlyObserveAfterConnect: [1, []],
         useObject19ForOtaInfo: [false],
@@ -173,6 +179,10 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
       }
     });
 
+    this.lwm2mDeviceProfileFormGroup.get('objectIds').valueChanges.pipe(
+      takeUntil(this.destroy$)
+    ).subscribe(value => this.updateObserveStrategy(value));
+
     this.lwm2mDeviceProfileFormGroup.valueChanges.pipe(
       takeUntil(this.destroy$)
     ).subscribe((value) => {
@@ -261,6 +271,7 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
         observeAttrTelemetry: this.getObserveAttrTelemetryObjects(value),
         bootstrap: this.configurationValue.bootstrap,
         bootstrapServerUpdateEnable: this.configurationValue.bootstrapServerUpdateEnable || false,
+        observeStrategy: this.configurationValue.observeAttr.observeStrategy || ObserveStrategy.SINGLE,
         clientLwM2mSettings: {
           clientOnlyObserveAfterConnect: this.configurationValue.clientLwM2mSettings.clientOnlyObserveAfterConnect,
           useObject19ForOtaInfo: this.configurationValue.clientLwM2mSettings.useObject19ForOtaInfo ?? false,
@@ -283,6 +294,7 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
       this.lwm2mDeviceProfileFormGroup.get('clientLwM2mSettings.fwUpdateStrategy').updateValueAndValidity({onlySelf: true});
       this.lwm2mDeviceProfileFormGroup.get('clientLwM2mSettings.swUpdateStrategy').updateValueAndValidity({onlySelf: true});
     }
+    this.updateObserveStrategy(value);
     this.cd.markForCheck();
   }
 
@@ -427,6 +439,7 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
     const telemetryArray: Array<string> = [];
     const attributes: any = {};
     const keyNameNew = {};
+    const observeStrategyValue = val.length ? this.lwm2mDeviceProfileFormGroup.get('observeStrategy')?.value : ObserveStrategy.SINGLE;
     const observeJson: ObjectLwM2M[] = JSON.parse(JSON.stringify(val));
     observeJson.forEach(obj => {
       if (isDefinedAndNotNull(obj.attributes) && !isEmpty(obj.attributes)) {
@@ -467,7 +480,8 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
       attribute: attributeArray,
       telemetry: telemetryArray,
       keyName: this.sortObjectKeyPathJson(KEY_NAME, keyNameNew),
-      attributeLwm2m: attributes
+      attributeLwm2m: attributes,
+      observeStrategy: observeStrategyValue
     };
   }
 
@@ -568,4 +582,12 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
     return this.lwm2mDeviceProfileFormGroup.get('clientLwM2mSettings') as UntypedFormGroup;
   }
 
+  private updateObserveStrategy(value: ObjectLwM2M[]) {
+    if (value.length && !this.disabled) {
+      this.lwm2mDeviceProfileFormGroup.get('observeStrategy').enable({onlySelf: true});
+    } else {
+      this.lwm2mDeviceProfileFormGroup.get('observeStrategy').disable({onlySelf: true});
+    }
+  }
+
 }

ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-profile-config.models.ts

@@ -136,6 +136,41 @@ export const ObjectIDVerTranslationMap = new Map<ObjectIDVer, string>(
   ]
 );
 
+export interface ObserveStrategyData {
+  name: string;
+  description: string;
+}
+
+export enum ObserveStrategy {
+  SINGLE = 'SINGLE',
+  COMPOSITE_ALL = 'COMPOSITE_ALL',
+  COMPOSITE_BY_OBJECT = 'COMPOSITE_BY_OBJECT'
+}
+
+export const ObserveStrategyMap = new Map<ObserveStrategy, ObserveStrategyData>([
+  [
+    ObserveStrategy.SINGLE,
+    {
+      name: 'device-profile.lwm2m.observe-strategy.single',
+      description: 'device-profile.lwm2m.observe-strategy.single-description'
+    }
+  ],
+  [
+    ObserveStrategy.COMPOSITE_ALL,
+    {
+      name: 'device-profile.lwm2m.observe-strategy.composite-all',
+      description: 'device-profile.lwm2m.observe-strategy.composite-all-description'
+    }
+  ],
+  [
+    ObserveStrategy.COMPOSITE_BY_OBJECT,
+    {
+      name: 'device-profile.lwm2m.observe-strategy.composite-by-object',
+      description: 'device-profile.lwm2m.observe-strategy.composite-by-object-description'
+    }
+  ]
+]);
+
 export interface ServerSecurityConfig {
   host?: string;
   port?: number;
@@ -187,6 +222,7 @@ export interface ObservableAttributes {
   telemetry: string[];
   keyName: {};
   attributeLwm2m: AttributesNameValueMap;
+  observeStrategy: ObserveStrategy;
 }
 
 export function getDefaultProfileObserveAttrConfig(): ObservableAttributes {
@@ -195,7 +231,8 @@ export function getDefaultProfileObserveAttrConfig(): ObservableAttributes {
     attribute: [],
     telemetry: [],
     keyName: {},
-    attributeLwm2m: {}
+    attributeLwm2m: {},
+    observeStrategy: ObserveStrategy.SINGLE
   };
 }
 

ui-ngx/src/assets/locale/locale.constant-en_US.json

@@ -2209,6 +2209,15 @@
                 "v1-0": "1.0",
                 "v1-1": "1.1",
                 "v1-2": "1.2"
+            },
+            "observe-strategy": {
+                "observe-strategy": "Observe strategy",
+                "single": "Single",
+                "single-description": "One resource equals one single observe request",
+                "composite-all": "Composite all",
+                "composite-all-description": "All resources in one composite observe request",
+                "composite-by-object": "Composite by objects",
+                "composite-by-object-description": "Grouped composite observe requests by object"
             }
         },
         "snmp": {