Simon Marsh
3970981f1b
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66 lines
2.2 KiB
JavaScript
66 lines
2.2 KiB
JavaScript
//////////////////////////////////////////////////////////////////////////
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export async function onRequest(context) {
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// Contents of context object
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const {
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request, // same as existing Worker API
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env, // same as existing Worker API
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params, // if filename includes [id] or [[path]]
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waitUntil, // same as ctx.waitUntil in existing Worker API
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next, // used for middleware or to fetch assets
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data, // arbitrary space for passing data between middlewares
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} = context;
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const url = new URL(request.url)
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const key = new Request(url.toString(), request)
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const cache = caches.default
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// is the page already cached ?
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let response = await cache.match(key)
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if (!response) {
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// no, we must fetch from the explorer
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const map={
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'dn42_roa_46.json': '/json',
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'dn42_roa_bird1_46.conf': '/bird/1/46',
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'dn42_roa_bird1_4.conf': '/bird/1/4',
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'dn42_roa_bird1_6.conf': '/bird/1/6',
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'dn42_roa_bird2_46.conf': '/bird/2/46',
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'dn42_roa_bird2_4.conf': '/bird/2/4',
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'dn42_roa_bird2_6.conf': '/bird/2/6',
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'dn42_roa_obgpd_4.conf': '/obgpd/4',
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'dn42_roa_obgpd_6.conf': '/obgpd/6',
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'dn42_roa_obgpd_46.conf': '/obgpd/46'
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}
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const endpoint = map[url.pathname.split("/").pop()]
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if (!endpoint) {
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return new Response("404 Not Found", {
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'status': 404,
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'statusText': 'Not Found'
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})
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}
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// fetch from the explorer
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const surl = 'https://explorer.burble.com/api/roa' + endpoint
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let sreq = new Request(surl, request)
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response = await fetch(sreq)
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response = new Response(response.body, response)
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// set Cache-Control header
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response.headers.append("Cache-Control", "public,s-maxage=3600")
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// and store in the cache
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waitUntil(cache.put(key, response.clone()))
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}
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// finally, return the response back to the user
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return response
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}
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//////////////////////////////////////////////////////////////////////////
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// end of file
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