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Fix resource busy erro #417

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merged 1 commit into from
Jul 2, 2024
Merged

Fix resource busy erro #417

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73 changes: 50 additions & 23 deletions gdal_processing.js
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Original file line number Diff line number Diff line change
Expand Up @@ -64,27 +64,44 @@ async function getTileEncoded(url, x, y, z, formatGDAL, blocSize, bands) {
}

// On ouvre les images si nécessaire
debug('On ouvre les images si nécessaire');
const withRgb = b.includes(0) || b.includes(1) || b.includes(2);
const withIr = b.includes(3);

const blocks = withRgb
? await gdal.openAsync(url).then((ds) => Promise.all([
ds.bands.getAsync(1)
const blocks = [];
if (withRgb) {
const dsRgb = await gdal.openAsync(url);
const blocksRgb = await Promise.all([
dsRgb.bands.getAsync(1)
.then((band) => (z === 0 ? band : band.overviews.getAsync(z - 1)))
.then((selectedLevel) => selectedLevel.pixels.readBlockAsync(x, y)),
ds.bands.getAsync(2)
dsRgb.bands.getAsync(2)
.then((band) => (z === 0 ? band : band.overviews.getAsync(z - 1)))
.then((selectedLevel) => selectedLevel.pixels.readBlockAsync(x, y)),
ds.bands.getAsync(3)
dsRgb.bands.getAsync(3)
.then((band) => (z === 0 ? band : band.overviews.getAsync(z - 1)))
.then((selectedLevel) => selectedLevel.pixels.readBlockAsync(x, y)),
]))
: [null, null, null];
blocks.push(withIr
? await gdal.openAsync(urlIr).then((ds) => ds.bands.getAsync(1)
]);
// Attention a toujours fermer les images ouvertes avec openAsync
// afin de ne pas bloquer le fichier
dsRgb.close();
blocks.push(blocksRgb[0], blocksRgb[1], blocksRgb[2]);
} else {
blocks.push(null, null, null);
}

if (withIr) {
const dsIr = await gdal.openAsync(urlIr);
const blockIr = await dsIr.bands.getAsync(1)
.then((band) => (z === 0 ? band : band.overviews.getAsync(z - 1)))
.then((selectedLevel) => selectedLevel.pixels.readBlockAsync(x, y)))
: null);
.then((selectedLevel) => selectedLevel.pixels.readBlockAsync(x, y));
// Attention a toujours fermer les images ouvertes avec openAsync
// afin de ne pas bloquer le fichier
dsIr.close();
blocks.push(blockIr);
} else {
blocks.push(null);
}

const outDS = await gdal.openAsync('default', 'w', 'MEM', blocSize, blocSize, 3);

Expand All @@ -105,18 +122,26 @@ async function getColor(url, x, y, z, col, lig, blocSize) {
try {
await fs.promises.access(url, fs.constants.R_OK);
const ds = await gdal.openAsync(url);
if (z === 0) {
return [await (await ds.bands.getAsync(1)).pixels.getAsync(col + x * blocSize,
lig + y * blocSize),
await (await ds.bands.getAsync(2)).pixels.getAsync(col + x * blocSize,
lig + y * blocSize),
await (await ds.bands.getAsync(3)).pixels.getAsync(col + x * blocSize,
lig + y * blocSize)];
}
return [await (await (await ds.bands.getAsync(1)).overviews.getAsync(z))
.pixels.getAsync(col, lig),
await (await (await ds.bands.getAsync(2)).overviews.getAsync(z - 1)).pixels.getAsync(col, lig),
await (await (await ds.bands.getAsync(3)).overviews.getAsync(z - 1)).pixels.getAsync(col, lig)];
const result = (z === 0)
? [
await (await ds.bands.getAsync(1)).pixels.getAsync(col + x * blocSize,
lig + y * blocSize),
await (await ds.bands.getAsync(2)).pixels.getAsync(col + x * blocSize,
lig + y * blocSize),
await (await ds.bands.getAsync(3)).pixels.getAsync(col + x * blocSize,
lig + y * blocSize),
] : [
await (await (await ds.bands.getAsync(1)).overviews.getAsync(z))
.pixels.getAsync(col, lig),
await (await (await ds.bands.getAsync(2)).overviews.getAsync(z - 1))
.pixels.getAsync(col, lig),
await (await (await ds.bands.getAsync(3)).overviews.getAsync(z - 1))
.pixels.getAsync(col, lig),
];
// Attention a toujours fermer les images ouvertes avec openAsync
// afin de ne pas bloquer le fichier
ds.close();
return result;
} catch (_) {
return [0, 0, 0];
}
Expand Down Expand Up @@ -262,6 +287,8 @@ function processPatchAsync(patch, blocSize) {
debug('... fin creation des images en memoire');
debug('creation des COGs ...');

// Attention a toujours fermer les images ouvertes avec openAsync
// afin de ne pas bloquer le fichier
graph.ds.close();
if (orthoRgb) {
orthoRgb.ds.close();
Expand Down
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