@opentelemetry/otlp-exporter-base
Version:
OpenTelemetry OTLP Exporter base (for internal use only)
73 lines • 2.73 kB
JavaScript
;
/*
* Copyright The OpenTelemetry Authors
*
* 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
*
* https://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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.createRetryingTransport = void 0;
const MAX_ATTEMPTS = 5;
const INITIAL_BACKOFF = 1000;
const MAX_BACKOFF = 5000;
const BACKOFF_MULTIPLIER = 1.5;
const JITTER = 0.2;
/**
* Get a pseudo-random jitter that falls in the range of [-JITTER, +JITTER]
*/
function getJitter() {
return Math.random() * (2 * JITTER) - JITTER;
}
class RetryingTransport {
_transport;
constructor(_transport) {
this._transport = _transport;
}
retry(data, timeoutMillis, inMillis) {
return new Promise((resolve, reject) => {
setTimeout(() => {
this._transport.send(data, timeoutMillis).then(resolve, reject);
}, inMillis);
});
}
async send(data, timeoutMillis) {
const deadline = Date.now() + timeoutMillis;
let result = await this._transport.send(data, timeoutMillis);
let attempts = MAX_ATTEMPTS;
let nextBackoff = INITIAL_BACKOFF;
while (result.status === 'retryable' && attempts > 0) {
attempts--;
// use maximum of computed backoff and 0 to avoid negative timeouts
const backoff = Math.max(Math.min(nextBackoff, MAX_BACKOFF) + getJitter(), 0);
nextBackoff = nextBackoff * BACKOFF_MULTIPLIER;
const retryInMillis = result.retryInMillis ?? backoff;
// return when expected retry time is after the export deadline.
const remainingTimeoutMillis = deadline - Date.now();
if (retryInMillis > remainingTimeoutMillis) {
return result;
}
result = await this.retry(data, remainingTimeoutMillis, retryInMillis);
}
return result;
}
shutdown() {
return this._transport.shutdown();
}
}
/**
* Creates an Exporter Transport that retries on 'retryable' response.
*/
function createRetryingTransport(options) {
return new RetryingTransport(options.transport);
}
exports.createRetryingTransport = createRetryingTransport;
//# sourceMappingURL=retrying-transport.js.map