[release/8.0.4xx] Containers - Retry on download blob #48987
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surayya-MS
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src/Tests/Microsoft.NET.Build.Containers.UnitTests/RegistryTests.cs
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src/Containers/Microsoft.NET.Build.Containers/ContainerBuilder.cs
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baronfel
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May 17, 2025
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@marcpopMSFT do you know if it is okay to merge this PR now for July release? or should I wait? |
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Branding is done for July, merging now. |
surayya-MS
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… closed" pr by #48987 "Containers - Retry on download blob"
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Fixes #48940
Description/Customer Impact
When building images we often have to pull base image layers from remote sources. These layers can be quite large, and so network interruption can cause the entire build to report failure. Typically we try to retry these operations (e.g. the Copy Task in MSBuild itself), so we should do the same here.
We're forced to use pretty naive retries (operation-level, not chunk-level) because the OCI HTTP API and many popular registries do not support chunked requests well.
Changes made
DownloadBlobAsyncin case of failure from upgraded logging for #595 log url when connection is closed #44953 (too many commits, something goes wrong when try git cherry-pick)Registry.DownloadBlobAsyncby adding a retry mechanismTesting
Added unit test for retry mechanism.
Risk
Low - tests have been added and the mechanism is very simple.