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https://issues.apache.org/jira/browse/MRESOLVER-265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tamás Cservenák updated MRESOLVER-265:
--------------------------------------
    Fix Version/s: resolver-next
                   1.8.2

> Discrepancy between produced and recognized checksums
> -----------------------------------------------------
>
>                 Key: MRESOLVER-265
>                 URL: https://issues.apache.org/jira/browse/MRESOLVER-265
>             Project: Maven Resolver
>          Issue Type: Dependency upgrade
>    Affects Versions: 1.8.0
>            Reporter: Tamás Cservenák
>            Priority: Major
>             Fix For: resolver-next, 1.8.2
>
>
> In short: repository layout has members:
> * 
> {{org.eclipse.aether.internal.impl.Maven2RepositoryLayoutFactory.Maven2RepositoryLayout#checksumAlgorithms}}
> * 
> {{org.eclipse.aether.internal.impl.Maven2RepositoryLayoutFactory.Maven2RepositoryLayout#extensionsWithoutChecksums}}
> First one is checksums (as configured by user of default) that will be 
> consumed (on fetch) or produced (publish), while second marks artifact 
> extensions that need no checksums (on fetch -- fetched, or publish -- 
> generated).
> Now, if we consider "default" configured resolver (checksumAlrgorithms=SHA1, 
> MD5; extensionsWithoutChecksums=.asc) there is a discrepancy IF ANY OTHER 
> supported but not configured checksum comes in play:
> If a Mojo attaches an artifact having extension ".zip.sha512", resolver will 
> checksum it (w/ {{checksumAlgorithms}} checksums) DESPITE it should know this 
> is a checksum, and "checksum of a checksum" is a nonsense, just makes noise.
> Reason: method 
> {{org.eclipse.aether.internal.impl.Maven2RepositoryLayoutFactory.Maven2RepositoryLayout#isChecksum}}
>  works with preconfigured checksums only (in our example SHA1 and MS5) and 
> will respond "no" for SHA512.
> Proposal to fix:
> The method check should NOT be based on {{checksumAlgorithms}} but on "all 
> checksums supported by Resolver".



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