aws-event-stream/dist/event-store.js

A simple and fast EventStore for AWS.

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.EventStore = void 0;
var event_stream_1 = require("./event-stream");
/**
 * The EventStore itself. To create EventStore instances, use the {@link EventStoreBuilder}
 */
var EventStore = /** @class */ (function () {
    function EventStore(provider, publisher) {
        this.persistenceProvider = provider;
        this.storePublisher = publisher;
    }
    Object.defineProperty(EventStore.prototype, "provider", {
        get: function () {
            if (!this.persistenceProvider) {
                throw new Error('No Provider configured in EventStore.');
            }
            return this.persistenceProvider;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(EventStore.prototype, "publisher", {
        get: function () {
            return this.storePublisher;
        },
        enumerable: false,
        configurable: true
    });
    /**
     * Retrieve an event stream.
     * @param aggregation The parent aggregation for the event stream
     * @param streamId The stream identifier. Can be any string
     * @return The existing stream. If no stream exists for to the given id, a new one
     * will be created when the first event is added to the stream.
     */
    EventStore.prototype.getEventStream = function (aggregation, streamId) {
        return new event_stream_1.EventStreamImpl(this, { aggregation: aggregation, id: streamId });
    };
    /**
     * Add a new subscription to notifications channel associated with the given aggregation.
     * It is necessary to have a valid {@link Publisher} configured that supports subscriptions.
     * @param aggregation The aggregation for the stream events
     * @param subscriber Declares the function to be called to handle new messages
     * @return A subscription. Can be used to remove the subscription to the publisher channel.
     */
    EventStore.prototype.subscribe = function (aggregation, subscriber) {
        if (this.publisher && this.publisher.subscribe) {
            return this.publisher.subscribe(aggregation, subscriber);
        }
        throw new Error('There is no valid Publisher configured. '
            + 'Configure a Publisher that implements HasSubscribers int erface');
    };
    /**
     * Retrieves a ranged aggregation list
     * @param offset The start position in the aggregation list
     * @param limit The desired quantity aggregations
     * @return The aggregation list
     */
    EventStore.prototype.getAggregations = function (offset, limit) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                return [2 /*return*/, this.provider.getAggregations(offset, limit)];
            });
        });
    };
    /**
     * Retrieves a ranged stream list
     * @param aggregation The aggregation
     * @param offset The start position in the stream list
     * @param limit The desired quantity streams
     * @return The stream list
     */
    EventStore.prototype.getStreams = function (aggregation, offset, limit) {
        return __awaiter(this, void 0, void 0, function () {
            return __generator(this, function (_a) {
                return [2 /*return*/, this.provider.getStreams(aggregation, offset, limit)];
            });
        });
    };
    return EventStore;
}());
exports.EventStore = EventStore;
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