Implementation:Risingwavelabs Risingwave TimeUtils

Property	Value
Module	Time Utilities
File	dashboard/lib/utils/timeUtils.ts
Language	TypeScript
Lines	108
Type	Utility Module
Dependencies	Browser Intl API, Date API

Overview

timeUtils.ts provides time parsing and formatting utilities for the dashboard's time-travel query controls. The module exports four functions: parseDuration for converting duration strings (e.g., "30s", "5m", "2h", "1d") to seconds, parseTimestampToUnixEpoch for converting timestamp strings to Unix epoch seconds, getCurrentTimeInSystemTimezone for formatting the current time using the browser's Intl.DateTimeFormat in the system timezone, and formatUnixEpoch for converting Unix epoch seconds back to ISO strings. These utilities are used by the TimeControls component to parse user-provided time inputs for historical stats queries on the graph visualization pages.

Code Reference

Source Location

dashboard/lib/utils/timeUtils.ts

Signature

export function parseDuration(durationStr: string): number

export function parseTimestampToUnixEpoch(
  timestamp: string,
  timezone?: string
): number

export function getCurrentTimeInSystemTimezone(): string

export function formatUnixEpoch(unixEpoch: number): string

Import

import {
  parseDuration,
  parseTimestampToUnixEpoch,
  getCurrentTimeInSystemTimezone,
  formatUnixEpoch,
} from "../lib/utils/timeUtils"

I/O Contract

parseDuration

Parameter	Type	Description
durationStr	string	Duration string matching pattern /^(\d+)([smhd])$/
Returns	number	Duration in seconds
Throws	Error	If the format does not match the expected pattern

Supported units:

Unit	Multiplier	Example
s	1	"30s" -> 30
m	60	"5m" -> 300
h	3600	"2h" -> 7200
d	86400	"1d" -> 86400

parseTimestampToUnixEpoch

Parameter	Type	Default	Description
timestamp	string	(required)	Timestamp string parseable by the JavaScript Date constructor
timezone	string	System timezone via Intl.DateTimeFormat().resolvedOptions().timeZone	The timezone for interpretation (used for documentation; actual parsing relies on Date constructor behavior)
Returns	number		Unix epoch time in seconds (floored)
Throws	Error		If the timestamp produces an invalid Date

getCurrentTimeInSystemTimezone

Parameter	Type	Description
(none)		No parameters
Returns	string	Current time formatted as YYYY-MM-DDTHH:mm:ss in the system timezone, using the en-CA locale with Intl.DateTimeFormat

formatUnixEpoch

Parameter	Type	Description
unixEpoch	number	Unix epoch time in seconds
Returns	string	ISO 8601 string (e.g., "2024-01-15T10:30:00.000Z")

Usage Examples

Parsing Duration Strings

import { parseDuration } from "../lib/utils/timeUtils"

parseDuration("30s")  // returns 30
parseDuration("5m")   // returns 300
parseDuration("2h")   // returns 7200
parseDuration("1d")   // returns 86400

try {
  parseDuration("invalid")
} catch (e) {
  // Error: Invalid duration format. Use format like "30s", "5m", "2h", "1d"
}

Parsing Timestamps

import { parseTimestampToUnixEpoch } from "../lib/utils/timeUtils"

const epoch = parseTimestampToUnixEpoch("2024-01-15T10:30:00")
// Returns Unix epoch in seconds, e.g., 1705312200

Getting Current Time for Display

import { getCurrentTimeInSystemTimezone } from "../lib/utils/timeUtils"

const now = getCurrentTimeInSystemTimezone()
// Returns e.g., "2024-01-15T10:30:00" in the system timezone

Formatting Epoch for Display

import { formatUnixEpoch } from "../lib/utils/timeUtils"

const isoStr = formatUnixEpoch(1705312200)
// Returns "2024-01-15T10:30:00.000Z"

Related Pages

• Risingwavelabs_Risingwave_TimeControls - The primary consumer of these utility functions for parsing user time inputs
• Risingwavelabs_Risingwave_StreamingStats_Callbacks - Consumes the parsed time values for historical stats queries
• Risingwavelabs_Risingwave_Relation_Graph_Page - Page that integrates TimeControls with streaming stats using these time utilities