@aws-amplify/datastore/dist/esm/sync/datastoreConnectivity.mjs

AppSyncLocal support for aws-amplify

import { Observable } from 'rxjs';
import { ReachabilityMonitor } from './datastoreReachability/index.mjs';

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
const RECONNECTING_IN = 5000; // 5s this may be configurable in the future
class DataStoreConnectivity {
    constructor() {
        this.connectionStatus = {
            online: false,
        };
    }
    status() {
        if (this.observer) {
            throw new Error('Subscriber already exists');
        }
        return new Observable(observer => {
            this.observer = observer;
            // Will be used to forward socket connection changes, enhancing Reachability
            this.subscription = ReachabilityMonitor.subscribe(({ online }) => {
                this.connectionStatus.online = online;
                const observerResult = { ...this.connectionStatus }; // copyOf status
                observer.next(observerResult);
            });
            return () => {
                clearTimeout(this.timeout);
                this.unsubscribe();
            };
        });
    }
    unsubscribe() {
        if (this.subscription) {
            clearTimeout(this.timeout);
            this.subscription.unsubscribe();
        }
    }
    // for consistency with other background processors.
    async stop() {
        this.unsubscribe();
    }
    socketDisconnected() {
        if (this.observer && typeof this.observer.next === 'function') {
            this.observer.next({ online: false }); // Notify network issue from the socket
            this.timeout = setTimeout(() => {
                const observerResult = { ...this.connectionStatus }; // copyOf status
                this.observer.next(observerResult);
            }, RECONNECTING_IN); // giving time for socket cleanup and network status stabilization
        }
    }
}

export { DataStoreConnectivity as default };
//# sourceMappingURL=datastoreConnectivity.mjs.map