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imagetools: avoid excessive HTTP requests on create #3623
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Currently needed manifests were filtered out and then copied in a loop, but for each copy still the full unfiltered descriptor was copied instead of single manifest, resulting multiple push attempts for same descriptor. Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
When creating resulting image index it is wasteful to check for attestations for the descriptors in original index what were already attestation for subject manifest. Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
If multiple tags are specified for the same repo, it is wasteful to use them as separate targets and better to make them share the blob upload phase of the push. Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
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Added one more optimization for the case where multiple destination tags are set.
if err := eg2.Wait(); err != nil {
return err
}
ctx = withMediaTypeKeyPrefix(ctx) // because of containerd bug this needs to be called separately for each ctx/goroutine pair to avoid concurrent map write
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Off-topic, but is there a ticket related to this so that we can track if it's still needed?
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Two separate fixes to avoid bombarding registry with extra requests.
Potential follow-ups for the next feature release:
referrerscommand.