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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.
import { __awaiter, __extends, __generator } from "tslib";
import * as utils from "../util/utils";
import { BaseRequestPolicy, } from "./requestPolicy";
export function systemErrorRetryPolicy(retryCount, retryInterval, minRetryInterval, maxRetryInterval) {
return {
create: function (nextPolicy, options) {
return new SystemErrorRetryPolicy(nextPolicy, options, retryCount, retryInterval, minRetryInterval, maxRetryInterval);
},
};
}
/**
* @class
* Instantiates a new "ExponentialRetryPolicyFilter" instance.
*
* @constructor
* @param {number} retryCount The client retry count.
* @param {number} retryInterval The client retry interval, in milliseconds.
* @param {number} minRetryInterval The minimum retry interval, in milliseconds.
* @param {number} maxRetryInterval The maximum retry interval, in milliseconds.
*/
var SystemErrorRetryPolicy = /** @class */ (function (_super) {
__extends(SystemErrorRetryPolicy, _super);
function SystemErrorRetryPolicy(nextPolicy, options, retryCount, retryInterval, minRetryInterval, maxRetryInterval) {
var _this = _super.call(this, nextPolicy, options) || this;
_this.DEFAULT_CLIENT_RETRY_INTERVAL = 1000 * 30;
_this.DEFAULT_CLIENT_RETRY_COUNT = 3;
_this.DEFAULT_CLIENT_MAX_RETRY_INTERVAL = 1000 * 90;
_this.DEFAULT_CLIENT_MIN_RETRY_INTERVAL = 1000 * 3;
_this.retryCount = typeof retryCount === "number" ? retryCount : _this.DEFAULT_CLIENT_RETRY_COUNT;
_this.retryInterval =
typeof retryInterval === "number" ? retryInterval : _this.DEFAULT_CLIENT_RETRY_INTERVAL;
_this.minRetryInterval =
typeof minRetryInterval === "number"
? minRetryInterval
: _this.DEFAULT_CLIENT_MIN_RETRY_INTERVAL;
_this.maxRetryInterval =
typeof maxRetryInterval === "number"
? maxRetryInterval
: _this.DEFAULT_CLIENT_MAX_RETRY_INTERVAL;
return _this;
}
SystemErrorRetryPolicy.prototype.sendRequest = function (request) {
var _this = this;
return this._nextPolicy
.sendRequest(request.clone())
.catch(function (error) { return retry(_this, request, error.response, error); });
};
return SystemErrorRetryPolicy;
}(BaseRequestPolicy));
export { SystemErrorRetryPolicy };
/**
* Determines if the operation should be retried and how long to wait until the next retry.
*
* @param {number} statusCode The HTTP status code.
* @param {RetryData} retryData The retry data.
* @return {boolean} True if the operation qualifies for a retry; false otherwise.
*/
function shouldRetry(policy, retryData) {
var currentCount;
if (!retryData) {
throw new Error("retryData for the SystemErrorRetryPolicyFilter cannot be null.");
}
else {
currentCount = retryData && retryData.retryCount;
}
return currentCount < policy.retryCount;
}
/**
* Updates the retry data for the next attempt.
*
* @param {RetryData} retryData The retry data.
* @param {object} err The operation"s error, if any.
*/
function updateRetryData(policy, retryData, err) {
if (!retryData) {
retryData = {
retryCount: 0,
retryInterval: 0,
};
}
if (err) {
if (retryData.error) {
err.innerError = retryData.error;
}
retryData.error = err;
}
// Adjust retry count
retryData.retryCount++;
// Adjust retry interval
var incrementDelta = Math.pow(2, retryData.retryCount) - 1;
var boundedRandDelta = policy.retryInterval * 0.8 + Math.floor(Math.random() * (policy.retryInterval * 0.4));
incrementDelta *= boundedRandDelta;
retryData.retryInterval = Math.min(policy.minRetryInterval + incrementDelta, policy.maxRetryInterval);
return retryData;
}
function retry(policy, request, operationResponse, err, retryData) {
return __awaiter(this, void 0, void 0, function () {
var error_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
retryData = updateRetryData(policy, retryData, err);
if (!(err &&
err.code &&
shouldRetry(policy, retryData) &&
(err.code === "ETIMEDOUT" ||
err.code === "ESOCKETTIMEDOUT" ||
err.code === "ECONNREFUSED" ||
err.code === "ECONNRESET" ||
err.code === "ENOENT"))) return [3 /*break*/, 5];
_a.label = 1;
case 1:
_a.trys.push([1, 3, , 4]);
return [4 /*yield*/, utils.delay(retryData.retryInterval)];
case 2:
_a.sent();
return [2 /*return*/, policy._nextPolicy.sendRequest(request.clone())];
case 3:
error_1 = _a.sent();
return [2 /*return*/, retry(policy, request, operationResponse, error_1, retryData)];
case 4: return [3 /*break*/, 6];
case 5:
if (err) {
// If the operation failed in the end, return all errors instead of just the last one
return [2 /*return*/, Promise.reject(retryData.error)];
}
return [2 /*return*/, operationResponse];
case 6: return [2 /*return*/];
}
});
});
}
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