@eggjs/schedule
Version:
schedule plugin for egg, support corn job.
99 lines • 7.56 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.TimerStrategy = void 0;
const node_assert_1 = __importDefault(require("node:assert"));
const cron_parser_1 = __importDefault(require("cron-parser"));
const humanize_ms_1 = require("humanize-ms");
const safe_timers_1 = __importDefault(require("safe-timers"));
const utility_1 = require("utility");
const base_js_1 = require("./base.js");
class TimerStrategy extends base_js_1.BaseStrategy {
cronInstance;
constructor(scheduleConfig, agent, key) {
super(scheduleConfig, agent, key);
const { interval, cron, cronOptions, immediate } = this.scheduleConfig;
(0, node_assert_1.default)(interval || cron || immediate, `[@eggjs/schedule] ${this.key} \`schedule.interval\` or \`schedule.cron\` or \`schedule.immediate\` must be present`);
// init cron parser
if (cron) {
try {
this.cronInstance = cron_parser_1.default.parseExpression(cron, cronOptions);
}
catch (err) {
throw new TypeError(`[@eggjs/schedule] ${this.key} parse cron instruction(${cron}) error: ${err.message}`, { cause: err });
}
}
}
handler() {
throw new TypeError(`[@eggjs/schedule] ${this.key} strategy should override \`handler()\` method`);
}
start() {
/* istanbul ignore next */
if (this.agent.schedule.closed)
return;
if (this.scheduleConfig.immediate) {
this.logger.info(`[Timer] ${this.key} next time will execute immediate`);
setImmediate(() => this.handler());
}
else {
this.#scheduleNext();
}
}
#scheduleNext() {
/* istanbul ignore next */
if (this.agent.schedule.closed)
return;
// get next tick
const nextTick = this.getNextTick();
if (nextTick) {
this.logger.info(`[Timer] ${this.key} next time will execute after ${nextTick}ms at ${(0, utility_1.logDate)(new Date(Date.now() + nextTick))}`);
this.safeTimeout(() => this.handler(), nextTick);
}
else {
this.logger.info(`[Timer] ${this.key} reach endDate, will stop`);
}
}
onJobStart() {
// Next execution will trigger task at a fix rate, regardless of its execution time.
this.#scheduleNext();
}
/**
* calculate next tick
*
* @return {Number|undefined} time interval, if out of range then return `undefined`
*/
getNextTick() {
// interval-style
if (this.scheduleConfig.interval) {
return (0, humanize_ms_1.ms)(this.scheduleConfig.interval);
}
// cron-style
if (this.cronInstance) {
// calculate next cron tick
const now = Date.now();
let nextTick;
// loop to find next feature time
do {
try {
const nextInterval = this.cronInstance.next();
nextTick = nextInterval.getTime();
}
catch (err) {
// Error: Out of the timespan range
this.logger.info(`[Timer] ${this.key} cron out of the timespan range, error: %s`, err);
return;
}
} while (now >= nextTick);
return nextTick - now;
}
// won\'t run here
}
safeTimeout(handler, delay, ...args) {
const fn = delay < safe_timers_1.default.maxInterval ? setTimeout : safe_timers_1.default.setTimeout;
return fn(handler, delay, ...args);
}
}
exports.TimerStrategy = TimerStrategy;
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