Commit 90040620 authored by Jacob Schatz's avatar Jacob Schatz

Merge branch 'backoff-algo-backport-ee' into 'master'

Adds backoff algo from EE to CE

See merge request !9517
parents 166d71cb 3ecca3b0
Pipeline #6699286 passed with stages
in 97 minutes and 27 seconds
......@@ -296,5 +296,57 @@
* @returns {Boolean}
*/
w.gl.utils.convertPermissionToBoolean = permission => permission === 'true';
/**
* Back Off exponential algorithm
* backOff :: (Function<next, stop>, Number) -> Promise<Any, Error>
*
* @param {Function<next, stop>} fn function to be called
* @param {Number} timeout
* @return {Promise<Any, Error>}
* @example
* ```
* backOff(function (next, stop) {
* // Let's perform this function repeatedly for 60s or for the timeout provided.
*
* ourFunction()
* .then(function (result) {
* // continue if result is not what we need
* next();
*
* // when result is what we need let's stop with the repetions and jump out of the cycle
* stop(result);
* })
* .catch(function (error) {
* // if there is an error, we need to stop this with an error.
* stop(error);
* })
* }, 60000)
* .then(function (result) {})
* .catch(function (error) {
* // deal with errors passed to stop()
* })
* ```
*/
w.gl.utils.backOff = (fn, timeout = 60000) => {
let nextInterval = 2000;
const startTime = (+new Date());
return new Promise((resolve, reject) => {
const stop = arg => ((arg instanceof Error) ? reject(arg) : resolve(arg));
const next = () => {
if (new Date().getTime() - startTime < timeout) {
setTimeout(fn.bind(null, next, stop), nextInterval);
nextInterval *= 2;
} else {
reject(new Error('BACKOFF_TIMEOUT'));
}
};
fn(next, stop);
});
};
})(window);
}).call(window);
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment