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js: FetchSource takes optional custom headers (#112)

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* js: FetchSource takes optional custom headers
This commit is contained in:
Brandon Liu
2023-09-28 15:07:25 +08:00
committed by GitHub
parent 8925d4272b
commit b815bab09c
2 changed files with 15 additions and 3 deletions
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2
js/examples/maplibre.html
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@@ -23,7 +23,7 @@
let PMTILES_URL = "https://protomaps.github.io/PMTiles/protomaps(vector)ODbL_firenze.pmtiles"; let PMTILES_URL = "https://protomaps.github.io/PMTiles/protomaps(vector)ODbL_firenze.pmtiles";
const p = new pmtiles.PMTiles(PMTILES_URL) const p = new pmtiles.PMTiles(PMTILES_URL);
// this is so we share one instance across the JS code and the map renderer // this is so we share one instance across the JS code and the map renderer
protocol.add(p); protocol.add(p);

16
js/index.ts
View File

@@ -282,15 +282,21 @@ export class FileAPISource implements Source {
export class FetchSource implements Source { export class FetchSource implements Source {
url: string; url: string;
customHeaders: Headers;
constructor(url: string) { constructor(url: string, customHeaders: Headers = new Headers()) {
this.url = url; this.url = url;
this.customHeaders = customHeaders;
} }
getKey() { getKey() {
return this.url; return this.url;
} }
setHeaders(customHeaders: Headers) {
this.customHeaders = customHeaders;
}
async getBytes( async getBytes(
offset: number, offset: number,
length: number, length: number,
@@ -303,9 +309,15 @@ export class FetchSource implements Source {
signal = controller.signal; signal = controller.signal;
} }
const requestHeaders = new Headers(this.customHeaders);
requestHeaders.set(
"Range",
"bytes=" + offset + "-" + (offset + length - 1)
);
let resp = await fetch(this.url, { let resp = await fetch(this.url, {
signal: signal, signal: signal,
headers: { Range: "bytes=" + offset + "-" + (offset + length - 1) }, headers: requestHeaders,
}); });
// TODO: can return 416 with offset > 0 if content changed, which will have a blank etag. // TODO: can return 416 with offset > 0 if content changed, which will have a blank etag.