I was browsing through the site and took a look at the component reports. Checkstyle alone seems close to pointless as there are over 200 errors in log4j-api alone. log4j-core has over 2000 errors. Even new files that were formatted with our formatter settings such as the CassandraAppender plugin have import ordering errors. I also disagree with some of the rules configured, but that doesn't really matter when we don't enforce it in the first place.
Anyways, what's the point of configuring this and adding checkstyle comments yet not even using it? The only project I've come across in the wild so far that has checkstyle configured properly was Spring Boot, and your pull request has to pass the checkstyle check to even be mergeable. Perhaps if we wish to actually use it, we could loosen the rules down to a much smaller set that actually matches the formatter settings in src/ide/. If the rules matched our code base, then we could also have Jenkins run checkstyle checks which would keep us informed when we mess up, and it would also be useful for pull requests (I've had to reformat many patches in the past). Related, there's the style guide < https://logging.apache.org/log4j/2.x/javastyle.html> which I'm pretty sure I've never even looked at before. This could also be normalized with our formatter files. I've generally thought of our code style summarized as: * 4 space indent * use final * no star imports outside tests (and those should generally be static imports) * imports should be in some sort of alphabetical order (this is really difficult to match between IntelliJ and Eclipse for some reason; I've had rather obnoxious fights about this in the past thanks to import-order-induced merge conflicts) * try to stick to unix line endings, but we're rather mixed still * every file needs a license header unless it's impossible to include comments * use CamelCaseClassNames, even for acronyms * no hungarian notation or other distracting naming conventions * otherwise stick to typical Sun style that everyone basically recognizes (that the JDK doesn't even use itself) -- Matt Sicker <boa...@gmail.com>
