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Cache fetch promise and clear on error #381

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Cache fetch promise and clear on error #381

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7 changes: 6 additions & 1 deletion src/geotiffimage.js
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Original file line number Diff line number Diff line change
Expand Up @@ -382,12 +382,12 @@ class GeoTIFFImage {
offset = this.fileDirectory.StripOffsets[index];
byteCount = this.fileDirectory.StripByteCounts[index];
}
const slice = (await this.source.fetch([{ offset, length: byteCount }], signal))[0];

let request;
if (tiles === null || !tiles[index]) {
// resolve each request by potentially applying array normalization
request = (async () => {
const slice = (await this.source.fetch([{ offset, length: byteCount }], signal))[0];
let data = await poolOrDecoder.decode(this.fileDirectory, slice);
const sampleFormat = this.getSampleFormat();
const bitsPerSample = this.getBitsPerSample();
Expand All @@ -408,6 +408,11 @@ class GeoTIFFImage {
// set the cache
if (tiles !== null) {
tiles[index] = request;
request.catch(() => {
if (tiles[index] === request) {
tiles[index] = null;
}
});
}
} else {
// get from the cache
Expand Down