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algolia.js
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/*
* Copyright 2020 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
*
* 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.
*/
require('dotenv').config();
const {default: algoliasearch} = require('algoliasearch');
const {default: fetch} = require('node-fetch');
const {sizeof} = require('sizeof');
const algoliaIndexSource = 'https://developers.chrome.com/algolia.json';
const maxChunkSizeInBytes = 10000000; // 10,000,000
/**
* Chunks array of AlgoliaCollectionItem into array of array of AlgoliaCollectionItem smaller than 10 MB.
*
* @param {AlgoliaCollectionItem[]} arr
* @return {AlgoliaCollectionItem[][]}
*/
const chunkAlgolia = arr => {
const chunked = [];
let tempSizeInBytes = 0;
let temp = [];
for (const current of arr) {
const currentSizeInBytes = sizeof(current);
if (tempSizeInBytes + currentSizeInBytes < maxChunkSizeInBytes) {
temp.push(current);
tempSizeInBytes += currentSizeInBytes;
} else {
chunked.push(temp);
temp = [current];
tempSizeInBytes = currentSizeInBytes;
}
}
chunked.push(temp);
return chunked;
};
async function index() {
const indexedOn = new Date();
if (!process.env.ALGOLIA_APP_ID || !process.env.ALGOLIA_API_KEY) {
console.warn('Missing Algolia environment variables, skipping indexing.');
return;
}
let algoliaData = [];
try {
const raw = await fetch(algoliaIndexSource);
algoliaData = await raw.json();
} catch (err) {
console.error('Could not load algolia index from prod.', err);
return;
}
// Set date of when object is being added to algolia
algoliaData.map(e => {
e.indexedOn = indexedOn.getTime();
return e;
});
const chunkedAlgoliaData = chunkAlgolia(algoliaData);
const postsCount = algoliaData.length;
const client = algoliasearch(
process.env.ALGOLIA_APP_ID,
process.env.ALGOLIA_API_KEY
);
const index = client.initIndex('prod_developer_chrome');
console.log(
`Indexing ${postsCount} articles amongst ${chunkedAlgoliaData.length} chunk(s).`
);
// When indexing data we mark these two fields as fields that can be filtered by.
await index.setSettings({
attributesForFaceting: ['locale', 'tags'],
});
// Update algolia index with new data
for (let i = 0; i < chunkedAlgoliaData.length; i++) {
await index.saveObjects(chunkedAlgoliaData[i], {
autoGenerateObjectIDIfNotExist: true,
});
}
console.log('Updated algolia data.');
console.log('Deleting old data no longer in algolia.json.');
await index.deleteBy({
filters: `indexedOn < ${indexedOn.getTime()}`,
});
console.log('Deleted old data.');
console.log('Done!');
}
index().catch(err => {
console.error(err);
throw err;
});