115 Upgrade Spring Boot

[Pfeil]

Fixes #155

• fix deprecated stuff before upgrade, as far as possible
• Upgrade spring boot, service-base and repo-core and make it compiling
  • find a replacement for the elastic config
    • client has been replaced by: https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/current/getting-started-java.html
    • I think the support is based on repo-core or service-base, I should check/ask what the preconditions are on that side. Until now, it provided:
      • configuration class
      • exposure of the endpoint depending on a config switch
      • is it more in new versions?
• builds
• runs
• tests run
  • test which do not work anymore due to the change on the error message not being available now, but the body is.
  • tests which return 404 instead of 200 when querying known pids
  • tests testing swagger availability: returns 403 on access. Probably related to spring security filter chain.
  • tests of elasticsearch run (disabled by default, require a local elastic instance)
    • Caused by: java.net.UnknownHostException: http://localhost:9200: nodename nor servname provided, or not known even though elastic was available at this address (tried elastic 7 and 8)
• fix linting issues
• test coverage – I can't see why it should have changed (claimed -0.3%). So I took the opportunity to test the handlediff class.

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Breaking changes:

• It does now matter if /api/v1/known-pids (works) is queried or /api/v1/known-pids/. This is due to a change in spring boot 3. I do not plan to work around this, as some options may be deprecated at some point anyway, and any other workaround will include a lot of boilerplate.

[coveralls]

Pull Request Test Coverage Report for Build #313

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+2.6%) to 72.606%

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Files with Coverage Reduction	New Missed Lines	%
src/main/java/edu/kit/datamanager/pit/pidlog/KnownPid.java	1	95.56%

Totals
Change from base Build #302:	2.6%
Covered Lines:	872
Relevant Lines:	1201

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💛 - Coveralls

[Pfeil]

Current issue: If running the application (or tests) it directly crashes.

Pointers from the exception so far:

• Something seems to require javax.servlet.http.HttpServletRequest, which has been renamed to jakarta. But as it compiles, it is definitely not in my code.
• Some OpenAPI class is appearing in the output
• High-level reason is an exception in the spring web security config class (filterChain function/bean, "Error creating bean with name 'filterChain'")
• "Factory method 'selfLinkProvider' threw exception with message: Error creating bean with name 'mvcConversionService': Requested bean is currently in creation: Is there an unresolvable circular reference?"

It seems the only place I can influence here is the filterChain method, so I should look into fixing/refactoring this one.

Edit: The culprit was the outdated springdoc version. Fixed.