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maintenance-time.ts
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maintenance-time.ts
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/**
* Enum for representing all the days of the week
*/
export enum Weekday {
/**
* Monday
*/
MONDAY = '1',
/**
* Tuesday
*/
TUESDAY = '2',
/**
* Wednesday
*/
WEDNESDAY = '3',
/**
* Thursday
*/
THURSDAY = '4',
/**
* Friday
*/
FRIDAY = '5',
/**
* Saturday
*/
SATURDAY = '6',
/**
* Sunday
*/
SUNDAY = '7',
}
/**
* Properties required for setting up a weekly maintenance time
*/
export interface LustreMaintenanceTimeProps {
/**
* The day of the week for maintenance to be performed.
*/
readonly day: Weekday;
/**
* The hour of the day (from 0-24) for maintenance to be performed.
*/
readonly hour: number;
/**
* The minute of the hour (from 0-59) for maintenance to be performed.
*/
readonly minute: number;
}
/**
* Class for scheduling a weekly manitenance time.
*/
export class LustreMaintenanceTime {
/**
* The day of the week for maintenance to be performed.
*/
private readonly day: Weekday;
/**
* The hour of the day (from 00-24) for maintenance to be performed.
*/
private readonly hour: string;
/**
* The minute of the hour (from 00-59) for maintenance to be performed.
*/
private readonly minute: string;
constructor(props: LustreMaintenanceTimeProps) {
this.validate(props.hour, props.minute);
this.day = props.day;
this.hour = this.getTwoDigitString(props.hour);
this.minute = this.getTwoDigitString(props.minute);
}
/**
* Converts a day, hour, and minute into a timestamp as used by FSx for Lustre's weeklyMaintenanceStartTime field.
*/
public toTimestamp(): string {
return `${this.day.valueOf()}:${this.hour}:${this.minute}`;
}
/**
* Pad an integer so that it always contains at least 2 digits. Assumes the number is a positive integer.
*/
private getTwoDigitString(n: number): string {
const numberString = n.toString();
if (numberString.length === 1) {
return `0${n}`;
}
return numberString;
}
/**
* Validation needed for the values of the maintenance time.
*/
private validate(hour: number, minute: number) {
if (!Number.isInteger(hour) || hour < 0 || hour > 24) {
throw new Error('Maintenance time hour must be an integer between 0 and 24');
}
if (!Number.isInteger(minute) || minute < 0 || minute > 59) {
throw new Error('Maintenance time minute must be an integer between 0 and 59');
}
}
}