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Refactor to optimize storage driver ApplyDiff()

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To avoid an expensive call to archive.ChangesDirs() which walks two directory
trees and compares every entry, archive.ApplyLayer() has been extended to
also return the size of the layer changes.

Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
This commit is contained in:
Josh Hawn 2014-12-17 18:26:03 -08:00
parent 52679b2b7f
commit c57c03f841
5 changed files with 61 additions and 29 deletions
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2
archive/changes_test.go
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@ -286,7 +286,7 @@ func TestApplyLayer(t *testing.T) {
t.Fatal(err)
}
if err := ApplyLayer(src, layerCopy); err != nil {
if _, err := ApplyLayer(src, layerCopy); err != nil {
t.Fatal(err)
}