/
retry.js
65 lines (56 loc) · 2.31 KB
/
retry.js
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
// Expects an object with three arguments:
//
// - $actionName: name of the action to invoke
// - $attempts: integer, number of times the action should be tried (>= 1)
// - all other arguments are passed to the inner action
var openwhisk = require('openwhisk');
function main (args) {
const wsk = openwhisk({ignore_certs: args.$ignore_certs || false});
const actionName = args.$actionName;
const attempts = args.$attempts;
delete args.$ignore_certs;
delete args.$actionName;
delete args.$attempts;
if (typeof actionName !== 'string') {
return { error: `Expected an argument '$actionName' of type 'string', got '${actionName}'.` };
}
if (typeof attempts !== 'number' || attempts < 1) {
return { error: `Expected an argument '$attempts' of type 'number' and greater than zero, got '${attempts}'.` };
}
return new Promise(function (resolve, reject) {
function retry (n) {
if (n <= 0) {
reject('Invocation failed. No retries left.');
} else {
wsk.actions
.invoke({
actionName: actionName,
params: args,
blocking: true
})
.then(activation => resolve(activation.response.result) )
.catch(error => {
console.log(`attempt ${n} failed, retrying`);
retry(n - 1);
});
}
}
retry(attempts);
});
}