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index.js
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index.js
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// Copyright 2022 Google LLC
//
// 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
//
// 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.
// [START functions_tips_retry]
/**
* Background Cloud Function that demonstrates
* how to toggle retries using a promise
*
* @param {object} event The Cloud Functions event.
* @param {object} event.data Data included with the event.
* @param {object} event.data.retry User-supplied parameter that tells the function whether to retry.
*/
exports.retryPromise = event => {
const tryAgain = !!event.data.retry;
if (tryAgain) {
throw new Error('Retrying...');
} else {
console.error('Not retrying...');
return Promise.resolve();
}
};
/**
* Background Cloud Function that demonstrates
* how to toggle retries using a callback
*
* @param {object} event The Cloud Functions event.
* @param {object} event.data Data included with the event.
* @param {object} event.data.retry User-supplied parameter that tells the function whether to retry.
* @param {function} callback The callback function.
*/
exports.retryCallback = (event, callback) => {
const tryAgain = !!event.data.retry;
const err = new Error('Error!');
if (tryAgain) {
console.error('Retrying:', err);
callback(err);
} else {
console.error('Not retrying:', err);
callback();
}
};
// [END functions_tips_retry]