Bence Sipka created MRESOLVER-95:
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Summary: Allow extending ChecksumPolicyProvider
Key: MRESOLVER-95
URL: https://issues.apache.org/jira/browse/MRESOLVER-95
Project: Maven Resolver
Issue Type: Improvement
Components: resolver
Affects Versions: 1.4.1
Reporter: Bence Sipka
The ChecksumPolicyProvider interface is used to create the ChecksumPolicy
objects that define the behaviour to take in case of mismatching artifact
checksums. The ChecksumPolicyProvider class is documented as
{code:java}
@noimplement This interface is not intended to be implemented by clients.
@noextend This interface is not intended to be extended by clients.{code}
Please allow the extending and implementing this interface.
Justification:
The ChecksumPolicy interface is already implementable, as that doesn't declare
the above prohibition. However, the only implementation of
ChecksumPolicyProvider is DefaultChecksumPolicyProvider, that is a final class,
therefore doesn't allow customization of the checksum policies. This makes the
implementability of ChecksumPolicy void, as we cannot inject our checksum
policy implementations into the maven resolver system, as the documentation
prohibits it.
Use-case:
I'd like to use my own ChecksumPolicy that handles the ignore, warn, and error
cases and logs the errors into my custom output. The AbstractChecksumPolicy
superclass for the current implementations will always use a Logger instance,
however that is not usable in my environment.
In order to solve this, I'd like to be able to implement my own
ChecksumPolicyProvider that creates my custom ChecksumPolicy that logs the
errors and warnings to a custom location instead of using the Logger that comes
with AbstractChecksumPolicy .
Solution:
Remove the prohibition from the documentation of ChecksumPolicyProvider.
Workaround:
Implement ChecksumPolicyProvider nonetheless.
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