runtime-config-loader
Version:
Most applications require certain configuration values that can be changed at runtime of the app. The `environment.ts` files in an Angular application technically work for setting configuration values in an app, but those are buildtime configuration value
53 lines • 7.39 kB
JavaScript
import { HttpClient } from '@angular/common/http';
import { Injectable, Optional } from '@angular/core';
import { RuntimeConfig } from '../runtime-config';
import { forkJoin, of, Subject } from 'rxjs';
import { catchError, take, tap } from 'rxjs/operators';
import * as i0 from "@angular/core";
import * as i1 from "@angular/common/http";
import * as i2 from "../runtime-config";
export class RuntimeConfigLoaderService {
constructor(_http, config) {
this._http = _http;
this.configUrl = './assets/config.json';
this.configObject = null;
this.configSubject = new Subject();
if (config) {
this.configUrl = config.configUrl;
}
}
loadConfig() {
const urls = Array.isArray(this.configUrl)
? this.configUrl
: [this.configUrl];
const observables = urls.map((url) => this.makeHttpCall(url));
return forkJoin(observables).pipe(tap((configDataArray) => {
this.configObject = configDataArray.reduce((acc, configData) => {
return { ...acc, ...configData };
}, {});
this.configSubject.next(this.configObject);
}), catchError((err) => {
console.error('Error loading config: ', err);
this.configObject = null;
this.configSubject.next(this.configObject);
return of(null);
}));
}
makeHttpCall(url) {
return this._http.get(url).pipe(take(1));
}
getConfig() {
return this.configObject;
}
getConfigObjectKey(key) {
return this.configObject ? this.configObject[key] : null;
}
}
RuntimeConfigLoaderService.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.2.0", ngImport: i0, type: RuntimeConfigLoaderService, deps: [{ token: i1.HttpClient }, { token: i2.RuntimeConfig, optional: true }], target: i0.ɵɵFactoryTarget.Injectable });
RuntimeConfigLoaderService.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "14.2.0", ngImport: i0, type: RuntimeConfigLoaderService });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.2.0", ngImport: i0, type: RuntimeConfigLoaderService, decorators: [{
type: Injectable
}], ctorParameters: function () { return [{ type: i1.HttpClient }, { type: i2.RuntimeConfig, decorators: [{
type: Optional
}] }]; } });
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