Fix pom.xml repository url substitution property failure.

[geniusjoe]

Problem

I'm new to this project.
When I forked the project to the local computer,my IDEA ide throw an exception about cannot resolve parent project.

Could not transfer artifact io.confluent:kafka-connect-storage-common-parent:pom:10.1.2 from/to confluent (${confluent.maven.repo}): Cannot access ${confluent.maven.repo} with type default using the available connector factories: BasicRepositoryConnectorFactory

My IDEA cannot resolve the parent dependency io.confluent:kafka-connect-storage-common-parent although it can be found on confluent site. Therefore I think it's not caused by SnapShot version.

Steps to repreduce

Just simply delete package .m2\repository\io\confluent\kafka-connect-storage-common-parent\10.1.2 from local .m2 dependency cache, git checkout to 10.0.0.6 branch and then reload project.

Solution

An issue about this exception has been mentioned in #331.
According to these StackOverflow thread1 thread2 :

I assume the error happens when parent pom is being downloaded from the repo? That would make sense because to build the whole list of properties you'd need to download the parent and build an Effective POM. So you can't apply properties because parent hasn't been downloaded and you can't download parent because properties haven't been applied. That's my take on why it doesn't work, but I didn't run any experiments to confirm the hypothesis.

Maven will substitude property after parent pom has been parsed, so if parent pom is from remote repo and repo url is not written explicit, maven cannot download it.

Does this solution apply anywhere else?

• yes
• no

If yes, where?

Any other version using substitution in pom.xml repository url.

Test Strategy

Testing done:

• Unit tests
• Integration tests
• System tests
• Manual tests

Release Plan

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[geniusjoe]

@cjolivier01 @kpatelatwork @kkonstantine
Any advice you could give would be much appreciated.

[orinciog]

Hi! Your fix also worked for me. Thank you!