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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.TimeoutRunnerError = exports.TimeoutRunner = void 0;
exports.pollAgainstTimeout = pollAgainstTimeout;
exports.raceAgainstTimeout = raceAgainstTimeout;
var _manualPromise = require("./manualPromise");
var _ = require("./");
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class TimeoutRunnerError extends Error {}
exports.TimeoutRunnerError = TimeoutRunnerError;
class TimeoutRunner {
constructor(timeout) {
this._running = void 0;
this._timeout = void 0;
this._elapsed = void 0;
this._timeout = timeout;
this._elapsed = 0;
}
async run(cb) {
const running = this._running = {
lastElapsedSync: (0, _.monotonicTime)(),
timer: undefined,
timeoutPromise: new _manualPromise.ManualPromise()
};
try {
const resultPromise = Promise.race([cb(), running.timeoutPromise]);
this._updateTimeout(running, this._timeout);
return await resultPromise;
} finally {
this._updateTimeout(running, 0);
if (this._running === running) this._running = undefined;
}
}
interrupt() {
if (this._running) this._updateTimeout(this._running, -1);
}
elapsed() {
this._syncElapsedAndStart();
return this._elapsed;
}
updateTimeout(timeout, elapsed) {
this._timeout = timeout;
if (elapsed !== undefined) {
this._syncElapsedAndStart();
this._elapsed = elapsed;
}
if (this._running) this._updateTimeout(this._running, timeout);
}
_syncElapsedAndStart() {
if (this._running) {
const now = (0, _.monotonicTime)();
this._elapsed += now - this._running.lastElapsedSync;
this._running.lastElapsedSync = now;
}
}
_updateTimeout(running, timeout) {
if (running.timer) {
clearTimeout(running.timer);
running.timer = undefined;
}
this._syncElapsedAndStart();
if (timeout === 0) return;
timeout = timeout - this._elapsed;
if (timeout <= 0) running.timeoutPromise.reject(new TimeoutRunnerError());else running.timer = setTimeout(() => running.timeoutPromise.reject(new TimeoutRunnerError()), timeout);
}
}
exports.TimeoutRunner = TimeoutRunner;
async function raceAgainstTimeout(cb, timeout) {
const runner = new TimeoutRunner(timeout);
try {
return {
result: await runner.run(cb),
timedOut: false
};
} catch (e) {
if (e instanceof TimeoutRunnerError) return {
timedOut: true
};
throw e;
}
}
async function pollAgainstTimeout(callback, timeout, pollIntervals = [100, 250, 500, 1000]) {
var _pollIntervals$pop;
const startTime = (0, _.monotonicTime)();
const lastPollInterval = (_pollIntervals$pop = pollIntervals.pop()) !== null && _pollIntervals$pop !== void 0 ? _pollIntervals$pop : 1000;
let lastResult;
const wrappedCallback = () => Promise.resolve().then(callback);
while (true) {
var _shift;
const elapsed = (0, _.monotonicTime)() - startTime;
if (timeout !== 0 && elapsed >= timeout) break;
const received = timeout !== 0 ? await raceAgainstTimeout(wrappedCallback, timeout - elapsed) : await wrappedCallback().then(value => ({
result: value,
timedOut: false
}));
if (received.timedOut) break;
lastResult = received.result.result;
if (!received.result.continuePolling) return {
result: lastResult,
timedOut: false
};
const interval = (_shift = pollIntervals.shift()) !== null && _shift !== void 0 ? _shift : lastPollInterval;
if (timeout !== 0 && startTime + timeout <= (0, _.monotonicTime)() + interval) break;
await new Promise(x => setTimeout(x, interval));
}
return {
timedOut: true,
result: lastResult
};
}