Bump reactor-core from 3.3.3.RELEASE to 3.3.4.RELEASE

[dependabot-preview[bot]]

Bumps reactor-core from 3.3.3.RELEASE to 3.3.4.RELEASE.

Release notes

Sourced from reactor-core's releases.

v3.3.4.RELEASE

reactor-core 3.3.4.RELEASE is part of Dysprosium-SR6 Release Train.

:warning: Update considerations and deprecations

• Introduce and use VirtualTimeScheduler#getOrSet(boolean) (#2060, #2017)
  • VirtualTimeScheduler did not run scheduled tasks since 3.3.3.RELEASE
• retryWhen(Function), all retryBackoff and retry(Predicate)/retry(long, Predicate) are now deprecated, to be replaced by the more generic retryWhen(Retry) (see RetrySpec and RetryBackoffSpec for configurable builders that cover these methods and more)

:sparkles: New features and improvements

• Refactor of retryWhen to switch to a Spec/Builder model (#1979, #1978, #1905, #2063, #2052, #2064, #2079)
  • The new model is slated to replace retryWhen(Function) and retryBackoff as well as some retry variants in 3.4.0
  • The API is build around the Retry abstract class, with two builders (or Spec) to fluently configure the retries
  • This allows us to introduce additional new features:
    • all variants support a filter for errors to be retried
    • we now have sync and async retry callbacks when retry triggers
    • we can customize the exception to be thrown when max attempts is reached and we
    • transient bursts of errors can be handled separately, resetting eg. the backoff to its minimum provided at least one onNext comes in between errors
• In repeatWhen and retryWhen, when a Context is emitted, we now merge it with the current instead of replacing it (#2056)

:beetle: Bug fixes

• Mono.toFuture() now avoids invoking cancel after completion (#2070)
• Various fixes in switchOnFirst (#2019, #2068)
  • inner stream cancellation is better taken into account
  • some race conditions have been fixed
  • race conditions are tested
  • cancellation signal of the whole sequence is correctly forwarded to the inner flux
• the new API VirtualTimeScheduler#getOrSet(boolean) fixes virtual time in the StepVerifier (#2060, #2017)

:book: Documentation, Tests and Build

• [build] Bump Gradle to latest 5.6.x => 5.6.4 (93e4c965)
• [test] Various improvements over flakky tests (cce796c5, 282947e1, 98121736)

:+1: Thanks to the following contributors that also participated to this release

@OlegDokuka

Commits

• ef5d9c0 [artifactory-release] Release version 3.3.4.RELEASE
• 71b92e1 Prepare release 3.3.4.RELEASE (+merge ignore 3.2.16)
• 16e101b [artifactory-release] Next development version 3.2.17.BUILD-SNAPSHOT
• f15fe6d [artifactory-release] Release version 3.2.16.RELEASE
• fc9332e Prepare release 3.2.16.RELEASE
• 4e39d88 Follow up to #1979 to avoid retryWhen ambiguity (#2079)
• c0b6001 Refactor of retryWhen to switch to a Spec/Builder model (#1979)
• a98d6fa Fix missed SwitchOnFirst drain and inner stream cancel (#2076)
• ce58185 [test] Polish FluxSwitchOnFirstTest, temporarily ignore 1 test
• cce796c [test] Further polish BoundedElasticScheduler test
• Additional commits viewable in compare view

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