angular-simple-oidc
Version:
Angular Library implementing Open Id Connect specification. Code Flow, Refresh Tokens, Session Management, Discovery Document.
64 lines • 9.05 kB
JavaScript
import { Injectable } from '@angular/core';
import { merge, of, Subject } from 'rxjs';
import { takeUntil, switchMap, delay } from 'rxjs/operators';
import { AuthService } from '../auth.service';
import { AccessTokenExpiredEvent, AccessTokenExpiringEvent, TokensReadyEvent, } from '../auth.events';
import { filterInstanceOf } from 'angular-simple-oidc/operators';
import { EventsService, SimpleOidcInfoEvent } from 'angular-simple-oidc/events';
export class TokenExpirationDaemonService {
constructor(auth, events) {
this.auth = auth;
this.events = events;
this.destroyedSubject = new Subject();
}
startDaemon() {
this.watchTokenExpiration();
}
/**
* Sets timeouts based on the token expiration.
* Dispatches AccessTokenExpiringEvent before the access token expires (grace period)
* Dispatches AccessTokenExpiredEvent when the access token expires.
*/
watchTokenExpiration() {
this.auth.events$
.pipe(filterInstanceOf(TokensReadyEvent), switchMap(({ payload }) => {
if (payload.accessToken && payload.accessTokenExpiresAt) {
const expiration = new Date(payload.accessTokenExpiresAt);
// TODO: Expose as config?
const gracePeriod = 60;
const beforeExpiration = new Date(payload.accessTokenExpiresAt);
beforeExpiration.setSeconds(beforeExpiration.getSeconds() - gracePeriod);
const expiring$ = of(new AccessTokenExpiringEvent({
token: payload.accessToken,
expiresAt: expiration,
})).pipe(delay(beforeExpiration));
const expired$ = of(new AccessTokenExpiredEvent({
token: payload.accessToken,
expiredAt: expiration,
})).pipe(delay(expiration));
return merge(expiring$, expired$);
}
else {
return of(new SimpleOidcInfoEvent('TokenExpired event not configured due to access token or expiration empty.'));
}
}), takeUntil(this.destroyedSubject))
.subscribe((e) => {
if (e.payload) {
e.payload.now = new Date();
}
this.events.dispatch(e);
});
}
ngOnDestroy() {
this.destroyedSubject.next();
this.destroyedSubject.complete();
}
}
TokenExpirationDaemonService.decorators = [
{ type: Injectable }
];
TokenExpirationDaemonService.ctorParameters = () => [
{ type: AuthService },
{ type: EventsService }
];
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