@c8y/ngx-components
Version:
Angular modules for Cumulocity IoT applications
69 lines • 12 kB
JavaScript
import { Injectable } from '@angular/core';
import { InventoryService } from '@c8y/client';
import { flatten, pick } from 'lodash';
import { DynamicBulkIIdentifiedResolver } from './abstract-id-resolver';
import { DynamicResolverService } from './dynamic-resolver.service';
import * as i0 from "@angular/core";
import * as i1 from "./dynamic-resolver.service";
import * as i2 from "@c8y/client";
/**
* A DynamicDetailsResolver responsible to resolve managedObjects for dynamic components.
* This service implements bulk resolving. This reduces the number of requests made to
* the backend by querying multiple managedObjectIds in a single request.
*/
export class DynamicManagedObjectResolver extends DynamicBulkIIdentifiedResolver {
constructor(dynamicResolver, inventory) {
super(dynamicResolver);
this.dynamicResolver = dynamicResolver;
this.inventory = inventory;
this.typeForErrorMessage = 'managedObject';
this.maxNumberOfManagedObjectsPerRequest = 50;
this.queryFilter = {};
}
performBulkRequest(uniqIds, bulkRequestId) {
return this.loadManagedObjectsInChunks(uniqIds, bulkRequestId);
}
async loadManagedObjectsInChunks(uniqIds, bulkRequestId) {
if (!uniqIds.length) {
return { result: [], bulkRequestId, errors: [] };
}
const promiseArray = new Array();
while (uniqIds.length) {
const idsToProcess = uniqIds.splice(0, this.maxNumberOfManagedObjectsPerRequest);
promiseArray.push(this.loadAChunkOfManagedObjects(idsToProcess));
}
const result = await Promise.all(promiseArray);
const managedObjects = flatten(result.map(tmp => tmp.managedObjects));
const errors = flatten(result.map(tmp => tmp.errors));
return { result: managedObjects, bulkRequestId, errors };
}
async loadAChunkOfManagedObjects(uniqIds) {
const { data: managedObjects } = await this.inventory.list(Object.assign({}, this.queryFilter || {}, {
ids: uniqIds.join(),
pageSize: this.maxNumberOfManagedObjectsPerRequest
}));
const notFoundMOs = uniqIds.filter(id => !managedObjects.find(tmp => tmp.id === id));
if (notFoundMOs.length) {
const promArray = notFoundMOs.map(id => this.getStatusDetails(id));
const res = await Promise.all(promArray);
return { managedObjects, errors: res };
}
return { managedObjects, errors: [] };
}
async getStatusDetails(moId) {
try {
const res = await this.inventory.detail(moId);
return { id: moId, ...pick(res.res, ['status', 'statusText']) };
}
catch (e) {
return { id: moId, ...pick(e.res, ['status', 'statusText']) };
}
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: DynamicManagedObjectResolver, deps: [{ token: i1.DynamicResolverService }, { token: i2.InventoryService }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: DynamicManagedObjectResolver, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: DynamicManagedObjectResolver, decorators: [{
type: Injectable,
args: [{ providedIn: 'root' }]
}], ctorParameters: () => [{ type: i1.DynamicResolverService }, { type: i2.InventoryService }] });
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This reduces the number of requests made to\n * the backend by querying multiple managedObjectIds in a single request.\n */\n@Injectable({ providedIn: 'root' })\nexport class DynamicManagedObjectResolver extends DynamicBulkIIdentifiedResolver<IManagedObject> {\n  protected typeForErrorMessage = 'managedObject';\n  protected readonly maxNumberOfManagedObjectsPerRequest = 50;\n  protected queryFilter: any = {};\n\n  constructor(\n    protected dynamicResolver: DynamicResolverService,\n    protected inventory: InventoryService\n  ) {\n    super(dynamicResolver);\n  }\n\n  protected performBulkRequest(\n    uniqIds: string[],\n    bulkRequestId: number\n  ):\n    | Promise<{\n        result: IManagedObject[];\n        bulkRequestId: number;\n        errors: DynamicBulkRetrievalError[];\n      }>\n    | Observable<{\n        result: IManagedObject[];\n        bulkRequestId: number;\n        errors: DynamicBulkRetrievalError[];\n      }> {\n    return this.loadManagedObjectsInChunks(uniqIds, bulkRequestId);\n  }\n\n  protected async loadManagedObjectsInChunks(\n    uniqIds: string[],\n    bulkRequestId: number\n  ): Promise<{\n    result: IManagedObject[];\n    bulkRequestId: number;\n    errors: DynamicBulkRetrievalError[];\n  }> {\n    if (!uniqIds.length) {\n      return { result: [], bulkRequestId, errors: [] };\n    }\n    const promiseArray = new Array<\n      Promise<{ managedObjects: IManagedObject[]; errors: DynamicBulkRetrievalError[] }>\n    >();\n    while (uniqIds.length) {\n      const idsToProcess = uniqIds.splice(0, this.maxNumberOfManagedObjectsPerRequest);\n      promiseArray.push(this.loadAChunkOfManagedObjects(idsToProcess));\n    }\n\n    const result = await Promise.all(promiseArray);\n    const managedObjects = flatten(result.map(tmp => tmp.managedObjects));\n    const errors = flatten(result.map(tmp => tmp.errors));\n\n    return { result: managedObjects, bulkRequestId, errors };\n  }\n\n  protected async loadAChunkOfManagedObjects(\n    uniqIds: string[]\n  ): Promise<{ managedObjects: IManagedObject[]; errors: DynamicBulkRetrievalError[] }> {\n    const { data: managedObjects } = await this.inventory.list(\n      Object.assign({}, this.queryFilter || {}, {\n        ids: uniqIds.join(),\n        pageSize: this.maxNumberOfManagedObjectsPerRequest\n      })\n    );\n\n    const notFoundMOs = uniqIds.filter(id => !managedObjects.find(tmp => tmp.id === id));\n    if (notFoundMOs.length) {\n      const promArray = notFoundMOs.map(id => this.getStatusDetails(id));\n      const res = await Promise.all(promArray);\n      return { managedObjects, errors: res };\n    }\n\n    return { managedObjects, errors: [] };\n  }\n\n  protected async getStatusDetails(moId: string) {\n    try {\n      const res = await this.inventory.detail(moId);\n      return { id: moId, ...pick(res.res, ['status', 'statusText']) };\n    } catch (e) {\n      return { id: moId, ...pick(e.res, ['status', 'statusText']) };\n    }\n  }\n}\n"]}