machankura/mempool
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Use sha hashes to compare before downloading

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This commit is contained in:
softsimon 2023-05-12 16:01:45 -05:00
parent 0718c071d9
commit 276868552c
1 changed files with 75 additions and 11 deletions
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86
frontend/sync-assets.js
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@ -1,5 +1,6 @@
var https = require('https');
var fs = require('fs');
var crypto = require('crypto');
const CONFIG_FILE_NAME = 'mempool-frontend-config.json';
let configContent = {};
@ -37,6 +38,13 @@ function download(filename, url) {
});
}
function getLocalHash(filePath) {
const size = fs.statSync(filePath);
const buffer = fs.readFileSync(filePath);
const bufferWithHeader = Buffer.concat([Buffer.from('blob '), Buffer.from(`${size.size}`), Buffer.from('\0'), buffer]);
return crypto.createHash('sha1').update(bufferWithHeader).digest('hex');
}
function downloadMiningPoolLogos() {
const options = {
host: 'api.github.com',
@ -46,21 +54,29 @@ function downloadMiningPoolLogos() {
};
https.get(options, (response) => {
let chunks_of_data = [];
const chunks_of_data = [];
response.on('data', (fragments) => {
chunks_of_data.push(fragments);
});
response.on('end', () => {
let response_body = Buffer.concat(chunks_of_data);
const response_body = Buffer.concat(chunks_of_data);
try {
const poolLogos = JSON.parse(response_body.toString());
let downloadedCount = 0;
for (const poolLogo of poolLogos) {
const filePath = `${PATH}/mining-pools/${poolLogo.name}`;
if (!fs.existsSync(filePath)) {
download(filePath, poolLogo.download_url);
if (fs.existsSync(filePath)) {
const localHash = getLocalHash(filePath);
if (localHash !== poolLogo.sha) {
console.log(`${poolLogo.name} is different on the remote, updating`);
download(filePath, poolLogo.download_url);
downloadedCount++;
}
} else {
console.log(`${poolLogo.name} is missing, downloading`);
download(`${PATH}mining-pools/${poolLogo.name}`, poolLogo.download_url);
downloadedCount++;
}
}
@ -73,7 +89,58 @@ function downloadMiningPoolLogos() {
response.on('error', (error) => {
throw new Error(error);
});
})
});
}
function downloadPromoVideoSubtiles() {
// for( const l of promoVideoLanguages ) {
// download(promoPrefix + l + '.vtt', 'https://raw.githubusercontent.com/mempool/mempool-promo/master/subtitles/' + l + '.vtt');
// }
const options = {
host: 'api.github.com',
path: '/repos/mempool/mempool-promo/contents/subtitles',
method: 'GET',
headers: {'user-agent': 'node.js'}
};
https.get(options, (response) => {
const chunks_of_data = [];
response.on('data', (fragments) => {
chunks_of_data.push(fragments);
});
response.on('end', () => {
const response_body = Buffer.concat(chunks_of_data);
try {
const videoLanguages = JSON.parse(response_body.toString());
let downloadedCount = 0;
for (const language of videoLanguages) {
const filePath = `${PATH}/promo-video/${language.name}`;
if (fs.existsSync(filePath)) {
const localHash = getLocalHash(filePath);
if (localHash !== language.sha) {
console.log(`${language.name} is different on the remote, updating`);
download(filePath, language.download_url);
downloadedCount++;
}
} else {
console.log(`${language.name} is missing, downloading`);
download(`${PATH}promo-video/${language.name}`, language.download_url);
downloadedCount++;
}
}
console.log(`Downloaded ${downloadedCount} and skipped ${videoLanguages.length - downloadedCount} existing video subtitles`);
} catch (e) {
console.error(`Unable to download video subtitles. Trying again at next restart. Reason: ${e instanceof Error ? e.message : e}`);
}
});
response.on('error', (error) => {
throw new Error(error);
});
});
}
let assetsJsonUrl = 'https://raw.githubusercontent.com/mempool/asset_registry_db/master/index.json';
@ -87,10 +154,9 @@ if (configContent.BASE_MODULE && configContent.BASE_MODULE === 'liquid') {
const testnetAssetsJsonUrl = 'https://raw.githubusercontent.com/Blockstream/asset_registry_testnet_db/master/index.json';
const testnetAssetsMinimalJsonUrl = 'https://raw.githubusercontent.com/Blockstream/asset_registry_testnet_db/master/index.minimal.json';
const promoPrefix = PATH + '/promo-video/';
const promoVideoFile = promoPrefix + 'mempool-promo.mp4';
const promoVideoFile = PATH + '/promo-video/mempool-promo.mp4';
const promoVideoUrl = 'https://raw.githubusercontent.com/mempool/mempool-promo/master/promo.mp4';
const promoVideoLanguages = ['en','sv','ja','zh','cs','fi','fr','de','it','lt','nb','fa','pl','ro','pt'];
console.log('Downloading assets');
download(PATH + 'assets.json', assetsJsonUrl);
@ -105,8 +171,6 @@ if (!fs.existsSync(promoVideoFile)) {
download(promoVideoFile, promoVideoUrl);
}
console.log('Downloading promo video subtitles');
for( const l of promoVideoLanguages ) {
download(promoPrefix + l + ".vtt", "https://raw.githubusercontent.com/mempool/mempool-promo/master/subtitles/" + l + ".vtt");
}
downloadPromoVideoSubtiles();
console.log('Downloading mining pool logos');
downloadMiningPoolLogos();