@drift-labs/sdk-browser
Version:
SDK for Drift Protocol
61 lines (60 loc) • 2.04 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.PollingConstituentAccountSubscriber = void 0;
const types_1 = require("../accounts/types");
const events_1 = require("events");
class PollingConstituentAccountSubscriber {
constructor(constituentMap, program, frequency, commitment, additionalFilters) {
this.constituentMap = constituentMap;
this.isSubscribed = false;
this.program = program;
this.frequency = frequency;
this.commitment = commitment;
this.additionalFilters = additionalFilters;
this.eventEmitter = new events_1.EventEmitter();
}
async subscribe() {
if (this.isSubscribed || this.frequency <= 0) {
return true;
}
const executeSync = async () => {
await this.sync();
this.intervalId = setTimeout(executeSync, this.frequency);
};
// Initial sync
await this.sync();
// Start polling
this.intervalId = setTimeout(executeSync, this.frequency);
this.isSubscribed = true;
return true;
}
async sync() {
try {
await this.constituentMap.sync();
this.eventEmitter.emit('update');
}
catch (error) {
console.log(`PollingConstituentAccountSubscriber.sync() error: ${error.message}`);
this.eventEmitter.emit('error', error);
}
}
async unsubscribe() {
if (!this.isSubscribed) {
return;
}
if (this.intervalId) {
clearTimeout(this.intervalId);
this.intervalId = undefined;
}
this.isSubscribed = false;
}
assertIsSubscribed() {
if (!this.isSubscribed) {
throw new types_1.NotSubscribedError('You must call `subscribe` before using this function');
}
}
didSubscriptionSucceed() {
return this.isSubscribed;
}
}
exports.PollingConstituentAccountSubscriber = PollingConstituentAccountSubscriber;