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Support sparse checkout/LFS better

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Instead of fetching all the LFS objects present in the current revision
in a sparse checkout, whether they are needed inside the sparse cone or
not, let's instead only pull the ones that are actually needed.

To do that, let's avoid running that preemptive `git lfs fetch` call in
case of a sparse checkout.

An alternative that was considered during the development of this patch
(and ultimately rejected) was to use `git lfs pull --include <path>...`,
but it turned out to be too inflexible because it requires exact paths,
not the patterns that are available via the sparse checkout definition,
and that risks running into command-line length limitations.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Johannes Schindelin 2023-06-07 13:37:50 +02:00
parent 1b203d18c7
commit 25d6c12a40
2 changed files with 4 additions and 2 deletions
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3
dist/index.js vendored
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@ -1267,7 +1267,8 @@ function getSource(settings) {
// LFS fetch
// Explicit lfs-fetch to avoid slow checkout (fetches one lfs object at a time).
// Explicit lfs fetch will fetch lfs objects in parallel.
if (settings.lfs) {
// For sparse checkouts, let `checkout` fetch the needed objects lazily.
if (settings.lfs && !settings.sparseCheckout) {
core.startGroup('Fetching LFS objects');
yield git.lfsFetch(checkoutInfo.startPoint || checkoutInfo.ref);
core.endGroup();

3
src/git-source-provider.ts
View file

@ -188,7 +188,8 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
// LFS fetch
// Explicit lfs-fetch to avoid slow checkout (fetches one lfs object at a time).
// Explicit lfs fetch will fetch lfs objects in parallel.
if (settings.lfs) {
// For sparse checkouts, let `checkout` fetch the needed objects lazily.
if (settings.lfs && !settings.sparseCheckout) {
core.startGroup('Fetching LFS objects')
await git.lfsFetch(checkoutInfo.startPoint || checkoutInfo.ref)
core.endGroup()