The Jetty API has changed, which mostly affects test code.
Jetty now does a strict SNI host check which unfortunately causes it to
return "SNI error" for our existing ad-hoc certificates. For now, I've
disabled it to avoid breaking existing deployments but added a
--sni-host-check command-line option so you can re-enable it if
you've configured your own certificate appropriately.
This enables crawl configuration files to use Spring's [Groovy Bean Definition DSL] as an optional alternative to Spring XML. It uses the same bean configuration model but the syntax is more terse and human-readable. No more need for `&` in seed URLs. :-)
```groovy
checkpointService(CheckpointService) {
checkpointIntervalMinutes = 15
checkpointsDir = 'checkpoints'
forgetAllButLatest = true
}
```
It also enables some powerful scripting capabilities. For example, defining a custom DecideRule directly in the crawl scope:
```groovy
scope(DecideRuleSequence) {
rules = [
new RejectDecideRule(),
// ACCEPT everything linked from a .pdf file
new PredicatedDecideRule() {
boolean evaluate(CrawlURI uri) {
return uri.via?.path?.endsWith(".pdf")
}
},
// ...
]
}
```
The main downsides are defining nested inner beans can be a bit awkward, some of the errors can be cryptic, and you can't just manipulate the config files with an XML parser.
This commit includes a Groovy version of the default crawl profile for reference, but doesn't expose a way to use it in the UI yet. For now, you need to manually create a `crawler-beans.groovy` file in your job directory.
[Groovy Bean Definition DSL]: https://docs.spring.io/spring-framework/reference/core/beans/basics.html#beans-factory-groovy
This is needed for Spring 6.1 to be able to reflect on parameter names. We have some autowiring that relies on parameter names such as `AbstractFrontier.setScope(DecideRule scope)`. Without this Spring doesn't know whether to inject the `scope` or `acceptSurts` beans as they both subclass DecideRule. Apparently older versions of Spring used to discover method names by parsing bytecode but this was mechanism removed in 6.1.
