@glue42/bbg-market-data/dist/es/connection/connection.js

A high-level API that wraps existing Glue42 Bloomberg Bridge Market Data interop methods. The API is based on the jBloomberg open source wrapper.

import { SessionState } from "./../bridge/types";
import { ConnectionStatus } from "./connection-status";
import CallbackRegistryFactory from "callback-registry";
import { CONNECTION_RETRY_PERIOD_DEFAULT } from "./../constants";
var STATUS_CHANGED_EVENT = "status-changed";
var Connection = (function () {
    function Connection(mdfBridge, connectionPeriodMsecs) {
        this.mdfBridge = mdfBridge;
        this.connectionPeriodMsecs = connectionPeriodMsecs;
        this.registry = CallbackRegistryFactory();
        this.connectionStatus = ConnectionStatus.Disconnected;
        this.subscribe();
    }
    Connection.prototype.onConnectionStatusChanged = function (callback) {
        if (typeof callback != "function") {
            throw new Error("callback must be a function.");
        }
        return this.registry.add(STATUS_CHANGED_EVENT, callback, [this.connectionStatus]);
    };
    Connection.prototype.setConnectionStatus = function (newConnectionStatus) {
        if (this.connectionStatus !== newConnectionStatus) {
            this.connectionStatus = newConnectionStatus;
            this.registry.execute(STATUS_CHANGED_EVENT, this.connectionStatus);
        }
    };
    Connection.prototype.subscribe = function () {
        var _this = this;
        var handleData = function (sessionStatus) {
            if (sessionStatus == null) {
                return;
            }
            var newConnectionStatus = sessionStatus.state === SessionState.Connected ? ConnectionStatus.Connected : ConnectionStatus.Disconnected;
            _this.setConnectionStatus(newConnectionStatus);
        };
        var handleError = function () {
            _this.setConnectionStatus(ConnectionStatus.Disconnected);
        };
        var handleClose = function () {
            _this.setConnectionStatus(ConnectionStatus.Disconnected);
        };
        var retryPeriodMsecs = typeof this.connectionPeriodMsecs != "number" || this.connectionPeriodMsecs < CONNECTION_RETRY_PERIOD_DEFAULT
            ? CONNECTION_RETRY_PERIOD_DEFAULT
            : this.connectionPeriodMsecs;
        this.mdfBridge.subscribeForConnectionStatus(retryPeriodMsecs, {
            onData: handleData,
            onError: handleError,
            onClose: handleClose,
        });
    };
    return Connection;
}());
export { Connection };