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insights.ts
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insights.ts
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import { StableWSConnection } from './connection';
import WebSocket from 'isomorphic-ws';
import { LiteralStringForUnion, UnknownType } from './types';
export type InsightTypes = 'ws_fatal' | 'ws_success_after_failure';
export class InsightMetrics {
connectionStartTimestamp: number | null;
wsConsecutiveFailures: number;
wsTotalFailures: number;
constructor() {
this.connectionStartTimestamp = null;
this.wsTotalFailures = 0;
this.wsConsecutiveFailures = 0;
}
}
export function buildWsFatalInsight<
ChannelType extends UnknownType = UnknownType,
CommandType extends string = LiteralStringForUnion,
UserType extends UnknownType = UnknownType
>(
connection: StableWSConnection<ChannelType, CommandType, UserType>,
event: WebSocket.CloseEvent,
) {
return {
err: {
wasClean: event.wasClean,
code: event.code,