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refactor(retry): simplify retryPromise using modern JS (#1086)

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Raphael von der Grün 2020-10-06 10:56:21 +02:00 committed by GitHub
parent 5d3591b853
commit e125ab1b9a
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1 changed files with 8 additions and 26 deletions
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34
bin/templates/cordova/lib/retry.js vendored
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@ -21,7 +21,7 @@
var events = require('cordova-common').events; var events = require('cordova-common').events;
/* /**
* Retry a promise-returning function a number of times, propagating its * Retry a promise-returning function a number of times, propagating its
* results on success or throwing its error on a failed final attempt. * results on success or throwing its error on a failed final attempt.
* *
@ -31,31 +31,13 @@ var events = require('cordova-common').events;
* *
* @returns {Promise} * @returns {Promise}
*/ */
module.exports.retryPromise = function (attemptsLeft, promiseFunction) { module.exports.retryPromise = async function (attemptsLeft, promiseFunction, ...args) {
// NOTE: while (true) {
// get all trailing arguments, by skipping the first two (attemptsLeft and try {
// promiseFunction) because they shouldn't get passed to promiseFunction return await promiseFunction(...args);
var promiseFunctionArguments = Array.prototype.slice.call(arguments, 2); } catch (error) {
if (--attemptsLeft < 1) throw error;
return promiseFunction.apply(undefined, promiseFunctionArguments).then(
// on success pass results through
function onFulfilled (value) {
return value;
},
// on rejection either retry, or throw the error
function onRejected (error) {
attemptsLeft -= 1;
if (attemptsLeft < 1) {
throw error;
}
events.emit('verbose', 'A retried call failed. Retrying ' + attemptsLeft + ' more time(s).'); events.emit('verbose', 'A retried call failed. Retrying ' + attemptsLeft + ' more time(s).');
// retry call self again with the same arguments, except attemptsLeft is now lower
var fullArguments = [attemptsLeft, promiseFunction].concat(promiseFunctionArguments);
return module.exports.retryPromise.apply(undefined, fullArguments);
} }
); }
}; };