@c8y/ngx-components
Version:
Angular modules for Cumulocity IoT applications
92 lines • 12.7 kB
JavaScript
import { Injectable } from '@angular/core';
import { Realtime } from '@c8y/client';
import { Observable } from 'rxjs';
import { distinctUntilChanged, share, shareReplay } from 'rxjs/operators';
import * as i0 from "@angular/core";
import * as i1 from "@c8y/client";
/**
* Service (providedIn root) that ensures to only create a single realtime subscription for each channel
*/
export class RealtimeSubjectService {
constructor(realtime) {
this.realtime = realtime;
this.subjects$ = new Map();
this.reconnect$ = this.createObservableForReconnect().pipe(share());
this.connectionStatus$ = this.createObservableForConnectionStatus().pipe(distinctUntilChanged(), shareReplay({ refCount: true, bufferSize: 1 }));
}
getObservableForChannel(channel) {
if (this.subjects$.has(channel)) {
return this.subjects$.get(channel);
}
const observable$ = this.createObservableForChannel(channel, this.realtime);
const sharedObservable$ = observable$.pipe(share());
this.subjects$.set(channel, sharedObservable$);
return sharedObservable$;
}
createObservableForChannel(channel, realtime) {
return new Observable(observer => {
let realtimeSubscription = realtime.subscribe(channel, msg => {
const data = {
channel: msg.channel,
data: msg.data.data,
id: msg.id,
realtimeAction: msg.data.realtimeAction
};
observer.next(data);
});
/**
* In (rare) case of a re-handshake, resubscribe valid subscriptions.
* @see https://docs.cometd.org/current/reference/#_javascript_subscribe_resubscribe
*/
const reconnectSubscription = this.reconnect$.subscribe(() => {
try {
realtimeSubscription = this.realtime.resubscribe(realtimeSubscription);
}
catch (e) {
console.warn(`Failed to resubscribe to channel: "${channel}" after reconnect.`, e);
observer.error(e);
}
});
return {
unsubscribe: () => {
reconnectSubscription.unsubscribe();
realtime.unsubscribe(realtimeSubscription);
}
};
});
}
createObservableForReconnect() {
return new Observable(observer => {
const handle = this.realtime.addHandshakeListener(msg => {
if (msg.successful && msg.reestablish) {
observer.next();
}
});
return {
unsubscribe: () => {
this.realtime.removeListener(handle);
}
};
});
}
createObservableForConnectionStatus() {
return new Observable(observer => {
observer.next(!this.realtime.isDisconnected() ? 'connected' : 'disconnected');
const handle = this.realtime.addConnectListener(msg => {
observer.next(msg.successful ? 'connected' : 'disconnected');
});
return {
unsubscribe: () => {
this.realtime.removeListener(handle);
}
};
});
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: RealtimeSubjectService, deps: [{ token: i1.Realtime }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: RealtimeSubjectService, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.13", ngImport: i0, type: RealtimeSubjectService, decorators: [{
type: Injectable,
args: [{ providedIn: 'root' }]
}], ctorParameters: () => [{ type: i1.Realtime }] });
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"realtime-subject.service.js","sourceRoot":"","sources":["../../../../core/realtime/realtime-subject.service.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,UAAU,EAAE,MAAM,eAAe,CAAC;AAC3C,OAAO,EAAE,QAAQ,EAAE,MAAM,aAAa,CAAC;AACvC,OAAO,EAAE,UAAU,EAAE,MAAM,MAAM,CAAC;AAClC,OAAO,EAAE,oBAAoB,EAAE,KAAK,EAAE,WAAW,EAAE,MAAM,gBAAgB,CAAC;;;AAG1E;;GAEG;AAEH,MAAM,OAAO,sBAAsB;IAKjC,YAAsB,QAAkB;QAAlB,aAAQ,GAAR,QAAQ,CAAU;QAFhC,cAAS,GAAG,IAAI,GAAG,EAAgD,CAAC;QAG1E,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,4BAA4B,EAAE,CAAC,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC;QACpE,IAAI,CAAC,iBAAiB,GAAG,IAAI,CAAC,mCAAmC,EAAE,CAAC,IAAI,CACtE,oBAAoB,EAAE,EACtB,WAAW,CAAC,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,CAAC,EAAE,CAAC,CAC/C,CAAC;IACJ,CAAC;IAED,uBAAuB,CAAI,OAAe;QACxC,IAAI,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,OAAO,CAAC,EAAE,CAAC;YAChC,OAAO,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,OAAO,CAAmC,CAAC;QACvE,CAAC;QACD,MAAM,WAAW,GAAG,IAAI,CAAC,0BAA0B,CAAI,OAAO,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QAC/E,MAAM,iBAAiB,GAAG,WAAW,CAAC,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC;QACpD,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,OAAO,EAAE,iBAAiB,CAAC,CAAC;QAE/C,OAAO,iBAAiB,CAAC;IAC3B,CAAC;IAES,0BAA0B,CAClC,OAAe,EACf,QAAkB;QAElB,OAAO,IAAI,UAAU,CAAqB,QAAQ,CAAC,EAAE;YACnD,IAAI,oBAAoB,GAAG,QAAQ,CAAC,SAAS,CAAC,OAAO,EAAE,GAAG,CAAC,EAAE;gBAC3D,MAAM,IAAI,GAAuB;oBAC/B,OAAO,EAAE,GAAG,CAAC,OAAO;oBACpB,IAAI,EAAE,GAAG,CAAC,IAAI,CAAC,IAAI;oBACnB,EAAE,EAAE,GAAG,CAAC,EAAE;oBACV,cAAc,EAAE,GAAG,CAAC,IAAI,CAAC,cAAc;iBACxC,CAAC;gBACF,QAAQ,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACtB,CAAC,CAAC,CAAC;YAEH;;;eAGG;YACH,MAAM,qBAAqB,GAAG,IAAI,CAAC,UAAU,CAAC,SAAS,CAAC,GAAG,EAAE;gBAC3D,IAAI,CAAC;oBACH,oBAAoB,GAAG,IAAI,CAAC,QAAQ,CAAC,WAAW,CAAC,oBAAoB,CAAC,CAAC;gBACzE,CAAC;gBAAC,OAAO,CAAC,EAAE,CAAC;oBACX,OAAO,CAAC,IAAI,CAAC,sCAAsC,OAAO,oBAAoB,EAAE,CAAC,CAAC,CAAC;oBACnF,QAAQ,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;gBACpB,CAAC;YACH,CAAC,CAAC,CAAC;YAEH,OAAO;gBACL,WAAW,EAAE,GAAG,EAAE;oBAChB,qBAAqB,CAAC,WAAW,EAAE,CAAC;oBACpC,QAAQ,CAAC,WAAW,CAAC,oBAAoB,CAAC,CAAC;gBAC7C,CAAC;aACF,CAAC;QACJ,CAAC,CAAC,CAAC;IACL,CAAC;IAES,4BAA4B;QACpC,OAAO,IAAI,UAAU,CAAO,QAAQ,CAAC,EAAE;YACrC,MAAM,MAAM,GAAG,IAAI,CAAC,QAAQ,CAAC,oBAAoB,CAAC,GAAG,CAAC,EAAE;gBACtD,IAAI,GAAG,CAAC,UAAU,IAAI,GAAG,CAAC,WAAW,EAAE,CAAC;oBACtC,QAAQ,CAAC,IAAI,EAAE,CAAC;gBAClB,CAAC;YACH,CAAC,CAAC,CAAC;YACH,OAAO;gBACL,WAAW,EAAE,GAAG,EAAE;oBAChB,IAAI,CAAC,QAAQ,CAAC,cAAc,CAAC,MAAM,CAAC,CAAC;gBACvC,CAAC;aACF,CAAC;QACJ,CAAC,CAAC,CAAC;IACL,CAAC;IAES,mCAAmC;QAC3C,OAAO,IAAI,UAAU,CAA+B,QAAQ,CAAC,EAAE;YAC7D,QAAQ,CAAC,IAAI,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,cAAc,EAAE,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC,CAAC,cAAc,CAAC,CAAC;YAC9E,MAAM,MAAM,GAAG,IAAI,CAAC,QAAQ,CAAC,kBAAkB,CAAC,GAAG,CAAC,EAAE;gBACpD,QAAQ,CAAC,IAAI,CAAC,GAAG,CAAC,UAAU,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC,CAAC,cAAc,CAAC,CAAC;YAC/D,CAAC,CAAC,CAAC;YACH,OAAO;gBACL,WAAW,EAAE,GAAG,EAAE;oBAChB,IAAI,CAAC,QAAQ,CAAC,cAAc,CAAC,MAAM,CAAC,CAAC;gBACvC,CAAC;aACF,CAAC;QACJ,CAAC,CAAC,CAAC;IACL,CAAC;+GAxFU,sBAAsB;mHAAtB,sBAAsB,cADT,MAAM;;4FACnB,sBAAsB;kBADlC,UAAU;mBAAC,EAAE,UAAU,EAAE,MAAM,EAAE","sourcesContent":["import { Injectable } from '@angular/core';\nimport { Realtime } from '@c8y/client';\nimport { Observable } from 'rxjs';\nimport { distinctUntilChanged, share, shareReplay } from 'rxjs/operators';\nimport { RealtimeMessage } from './realtime.model';\n\n/**\n * Service (providedIn root) that ensures to only create a single realtime subscription for each channel\n */\n@Injectable({ providedIn: 'root' })\nexport class RealtimeSubjectService {\n  reconnect$: Observable<void>;\n  connectionStatus$: Observable<'connected' | 'disconnected'>;\n  private subjects$ = new Map<string, Observable<RealtimeMessage<unknown>>>();\n\n  constructor(protected realtime: Realtime) {\n    this.reconnect$ = this.createObservableForReconnect().pipe(share());\n    this.connectionStatus$ = this.createObservableForConnectionStatus().pipe(\n      distinctUntilChanged(),\n      shareReplay({ refCount: true, bufferSize: 1 })\n    );\n  }\n\n  getObservableForChannel<T>(channel: string): Observable<RealtimeMessage<T>> {\n    if (this.subjects$.has(channel)) {\n      return this.subjects$.get(channel) as Observable<RealtimeMessage<T>>;\n    }\n    const observable$ = this.createObservableForChannel<T>(channel, this.realtime);\n    const sharedObservable$ = observable$.pipe(share());\n    this.subjects$.set(channel, sharedObservable$);\n\n    return sharedObservable$;\n  }\n\n  protected createObservableForChannel<T>(\n    channel: string,\n    realtime: Realtime\n  ): Observable<RealtimeMessage<T>> {\n    return new Observable<RealtimeMessage<T>>(observer => {\n      let realtimeSubscription = realtime.subscribe(channel, msg => {\n        const data: RealtimeMessage<T> = {\n          channel: msg.channel,\n          data: msg.data.data,\n          id: msg.id,\n          realtimeAction: msg.data.realtimeAction\n        };\n        observer.next(data);\n      });\n\n      /**\n       * In (rare) case of a re-handshake, resubscribe valid subscriptions.\n       * @see https://docs.cometd.org/current/reference/#_javascript_subscribe_resubscribe\n       */\n      const reconnectSubscription = this.reconnect$.subscribe(() => {\n        try {\n          realtimeSubscription = this.realtime.resubscribe(realtimeSubscription);\n        } catch (e) {\n          console.warn(`Failed to resubscribe to channel: \"${channel}\" after reconnect.`, e);\n          observer.error(e);\n        }\n      });\n\n      return {\n        unsubscribe: () => {\n          reconnectSubscription.unsubscribe();\n          realtime.unsubscribe(realtimeSubscription);\n        }\n      };\n    });\n  }\n\n  protected createObservableForReconnect() {\n    return new Observable<void>(observer => {\n      const handle = this.realtime.addHandshakeListener(msg => {\n        if (msg.successful && msg.reestablish) {\n          observer.next();\n        }\n      });\n      return {\n        unsubscribe: () => {\n          this.realtime.removeListener(handle);\n        }\n      };\n    });\n  }\n\n  protected createObservableForConnectionStatus() {\n    return new Observable<'connected' | 'disconnected'>(observer => {\n      observer.next(!this.realtime.isDisconnected() ? 'connected' : 'disconnected');\n      const handle = this.realtime.addConnectListener(msg => {\n        observer.next(msg.successful ? 'connected' : 'disconnected');\n      });\n      return {\n        unsubscribe: () => {\n          this.realtime.removeListener(handle);\n        }\n      };\n    });\n  }\n}\n"]}