@splitsoftware/splitio-commons
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Split JavaScript SDK common components
98 lines (97 loc) • 4.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SSEHandlerFactory = void 0;
var NotificationParser_1 = require("./NotificationParser");
var NotificationKeeper_1 = require("./NotificationKeeper");
var constants_1 = require("../constants");
var constants_2 = require("../../../logger/constants");
var constants_3 = require("../../../utils/constants");
/**
* Factory for SSEHandler, which processes SSEClient messages and emits the corresponding push events.
*
* @param log - factory logger
* @param pushEmitter - emitter for events related to streaming support
*/
function SSEHandlerFactory(log, pushEmitter, telemetryTracker) {
var notificationKeeper = (0, NotificationKeeper_1.notificationKeeperFactory)(pushEmitter, telemetryTracker);
function isRetryableError(error) {
if (error.parsedData && error.parsedData.code) {
// Ably error
var code = error.parsedData.code;
telemetryTracker.streamingEvent(constants_3.ABLY_ERROR, code);
// 401 errors due to invalid or expired token (e.g., if refresh token coudn't be executed)
if (40140 <= code && code <= 40149)
return true;
// Others 4XX errors (e.g., bad request from the SDK)
if (40000 <= code && code <= 49999)
return false;
}
else {
// network errors or 5XX HTTP errors
telemetryTracker.streamingEvent(constants_3.SSE_CONNECTION_ERROR, constants_3.NON_REQUESTED);
}
return true;
}
return {
handleOpen: function () {
notificationKeeper.handleOpen();
},
/* HTTP & Network errors */
handleError: function (error) {
var errorWithParsedData = error;
try {
errorWithParsedData = (0, NotificationParser_1.errorParser)(error);
}
catch (err) {
log.warn(constants_2.STREAMING_PARSING_ERROR_FAILS, [err]);
}
var errorMessage = (errorWithParsedData.parsedData && errorWithParsedData.parsedData.message) || errorWithParsedData.message;
log.error(constants_2.ERROR_STREAMING_SSE, [errorMessage]);
if (isRetryableError(errorWithParsedData)) {
pushEmitter.emit(constants_1.PUSH_RETRYABLE_ERROR);
}
else {
pushEmitter.emit(constants_1.PUSH_NONRETRYABLE_ERROR);
}
},
/* NotificationProcessor */
handleMessage: function (message) {
var messageWithParsedData;
try {
messageWithParsedData = (0, NotificationParser_1.messageParser)(message);
if (!messageWithParsedData)
return; // Messages with empty data are ignored
}
catch (err) {
log.warn(constants_2.STREAMING_PARSING_MESSAGE_FAILS, [err]);
return;
}
var parsedData = messageWithParsedData.parsedData, data = messageWithParsedData.data, channel = messageWithParsedData.channel, timestamp = messageWithParsedData.timestamp;
log.debug(constants_2.STREAMING_NEW_MESSAGE, [data]);
// we only handle update events if streaming is up
if (!notificationKeeper.isStreamingUp() && [constants_1.OCCUPANCY, constants_1.CONTROL].indexOf(parsedData.type) === -1)
return;
switch (parsedData.type) {
/* update events */
case constants_1.SPLIT_UPDATE:
case constants_1.SEGMENT_UPDATE:
case constants_1.MEMBERSHIPS_MS_UPDATE:
case constants_1.MEMBERSHIPS_LS_UPDATE:
case constants_1.SPLIT_KILL:
case constants_1.RB_SEGMENT_UPDATE:
pushEmitter.emit(parsedData.type, parsedData);
break;
/* occupancy & control events, handled by NotificationManagerKeeper */
case constants_1.OCCUPANCY:
notificationKeeper.handleOccupancyEvent(parsedData.metrics.publishers, channel, timestamp);
break;
case constants_1.CONTROL:
notificationKeeper.handleControlEvent(parsedData.controlType, channel, timestamp);
break;
default:
break;
}
},
};
}
exports.SSEHandlerFactory = SSEHandlerFactory;