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Retry fetching from jsdelivr if github fails

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This commit is contained in:
Misode
2023-01-07 11:55:28 +01:00
parent e1e9f6fa9c
commit 0ecc69a861
1 changed files with 14 additions and 1 deletions
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15
src/app/services/DataFetcher.ts
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@@ -309,9 +309,22 @@ async function cachedFetch<D = unknown>(url: string, { decode = (r => r.json()),
}
}
const RAWGITHUB_REGEX = /^https:\/\/raw\.githubusercontent\.com\/([^\/]+)\/([^\/]+)\/([^\/]+)\/(.*)$/
async function fetchAndCache<D>(cache: Cache, url: string, decode: (r: Response) => Promise<D>) {
console.debug(`[cachedFetch] Fetching data ${url}`)
const fetchResponse = await fetch(url)
let fetchResponse
try {
fetchResponse = await fetch(url)
} catch (e) {
if (url.startsWith('https://raw.githubusercontent.com/')) {
const backupUrl = url.replace(RAWGITHUB_REGEX, 'https://cdn.jsdelivr.net/gh/$1/$2@$3/$4')
console.debug(`[cachedFetch] Retrying using ${backupUrl}`)
fetchResponse = await fetch(backupUrl)
} else {
throw e
}
}
const fetchClone = fetchResponse.clone()
const fetchData = await decode(fetchResponse)
await cache.put(url, fetchClone)